Class / Patent application number | Description | Number of patent applications / Date published |
208048000 | With prevention or removal of deleterious carbon accumulations or equipment | 33 |
20090020459 | ETHYLENE FURNACE RADIANT COIL DECOKING METHOD - Methods are provided for decoking the radiant coils in an ethylene cracking plant. The decoking process is controlled by monitoring the coil outlet temperature to control the rate of burning of coke in the radiant coils. Air flow rates, steam flow rates and coil outlet temperatures are controlled during the decoking process to prevent tube damage, minimize decoking time and maximize coke removal. | 01-22-2009 |
20090211948 | METHOD AND DEVICE FOR SWITCHING OVER SHUT-OFF MEMBERS ON CRACKING FURNACES - The invention relates to a method and also a device for switching over a cracking furnace between production mode and decoking mode, wherein a first shut-off member (TLV), which is arranged in the transfer line and equipped with a first actuating drive, and a second shut-off member (EGV), which is arranged in the decoking line and equipped with a second actuating drive, are actuated simultaneously and wherein the differential pressure DP across the shut-off member TLV is continuously measured and monitored. The actuation of the shut-off members TLV and EGV is carried out in an automated manner, wherein TLV is moved monotonously between its end positions, while the second actuating drive is triggered by the actuating signal of a control means and EGV is as a result actuated in such a way that DP is at all times approximated to a predefined target value (DP target). | 08-27-2009 |
20100282645 | PRE-PASSIVATION PROCESS FOR A CONTINUOUS REFORMING APPARATUS, AND PASSIVATION PROCESS FOR A CONTINUOUS REFORMING APPARATUS DURING THE INITIAL REACATION - The present invention relates to a pre-passivation process for a continuous reforming apparatus prior to the reaction, or a passivation process for a continuous reforming apparatus during the initial reaction, comprising loading a reforming catalyst into the continuous reforming apparatus, starting the gas circulation and raising the temperature of a reactor, injecting sulfide into the gas at a reactor temperature ranging from 100-650° C., controlling the sulfur amount in the recycle gas within a range of 0.5-100×10 | 11-11-2010 |
20100288679 | PROCESS FOR THE DEEP DESULFURIZATION OF HEAVY PYROLYSIS GASOLINE - A process for the deep desulfurization of a heavy pyrolysis gasoline to very low levels of organic sulfur, e.g., 30 ppmv or less, with minimal octane number loss through aromatics saturation. The deep desulfurization is accomplished by contacting the heavy pyrolysis gasoline feedstock, partially in liquid and partially in gaseous phase, with a hydrogen treat gas containing a minimum H | 11-18-2010 |
20100294701 | METHODS FOR HYDROCRACKING A HEAVY OIL FEEDSTOCK USING AN IN SITU COLLOIDAL OR MOLECULAR CATALYST AND RECYCLING THE COLLOIDAL OR MOLECULAR CATALYST - A hydrocracking system involves introducing a heavy oil feedstock and a colloidal or molecular catalyst, or a precursor composition capable of forming the colloidal or molecular catalyst, into a hydrocracking reactor. The colloidal or molecular catalyst is formed in situ within the heavy oil feedstock by intimately mixing a catalyst precursor composition into a heavy oil feedstock and raising the temperature of the feedstock to above the decomposition temperature of the precursor composition to form the colloidal or molecular catalyst. The colloidal or molecular catalyst catalyzes upgrading reactions between the heavy oil feedstock and hydrogen and eliminates or reduces formation of coke precursors and sediment. At least a portion of a resid fraction containing residual colloidal or molecular catalyst is recycled back into the hydrocracking reactor to further upgrade the recycled resid fraction portion and provide recycled colloidal or molecular catalyst within the hydrocracking reactor. | 11-25-2010 |
20100320126 | METHOD AND APPARATUS FOR THERMAL CRACKING ORGANIC MACROMOLECULE MIXTURE TO RECYCLE DIFFERENTIATED SUBSTRATES - A method and an apparatus for thermal cracking organic macromolecule mixture to recycle differentiated substrates, comprising mainly of thermal cracking organic macromolecule by using molten inorganic salt, which can separate easily substrates mixed in macromolecular materials, achieve readily the object of differentiation, obtain large area (volume) of substrates without damaging the characteristics of original substrates, increase re-usability, and even more important, in the course of treatment, accomplish simultaneously objects of energy-saving and carbon-reducing as well as pollution control, thereby provide method for treating organic macromolecule wastes, a method and an apparatus for differentiating substrates. | 12-23-2010 |
20110062058 | METHOD FOR DETERMINING ASPHALTENE STABILITY OF A HYDROCARBON-CONTAINING MATERIAL - A method for determining asphaltene stability in a hydrocarbon-containing material having solvated asphaltenes therein is disclosed. The method involves the steps of: (a) precipitating an amount of the asphaltenes from a liquid sample of the hydrocarbon-containing material with an alkane mobile phase solvent in a column; (b) dissolving a first amount and a second amount of the precipitated asphaltenes by gradually and continuously changing the alkane mobile phase solvent to a final mobile phase solvent having a solubility parameter at least 1 MPa | 03-17-2011 |
20110220553 | METHODS AND SYSTEMS FOR HYDROCRACKING A HEAVY OIL FEEDSTOCK USING AN IN SITU COLLOIDAL OR MOLECULAR CATALYST - A hydrocracking system involves introducing a heavy oil feedstock and a colloidal or molecular catalyst, or a catalyst precursor capable of forming the colloidal or molecular catalyst, into a hydrocracking reactor. The colloidal or molecular catalyst is formed in situ within the heavy oil feedstock by 1) premixing the catalyst precursor with a hydrocarbon diluents to form a catalyst precursor mixture, 2) mixing the catalyst precursor mixture with the heavy oil feedstock, and 3) raising the temperature of the feedstock to above the decomposition temperature of the catalyst precursor to form the colloidal or molecular catalyst. The colloidal or molecular catalyst catalyzes upgrading reactions between the heavy oil feedstock and hydrogen and eliminates or reduces formation of coke precursors and sediment. The colloidal or molecular catalyst can be the sole or primary hydrocracking catalyst in a stand-alone hydrocracking reactor or it can be used together with a porous supported catalyst within a fixed bed or ebullated bed reactor. | 09-15-2011 |
20120097581 | Alumina Forming Bimetallic Tube for Refinery Process Furnaces and Method of Making and Using - Provided is a bimetallic tube for transport of hydrocarbon feedstocks in refinery process furnaces, and more particularly in furnace radiant coils, including: i) an outer tube layer being formed from carbon steels or low chromium steels comprising less than 15.0 wt. % Cr based on the total weight of the steel; ii) an inner tube layer being formed from an alumina forming bulk alloy including 5.0 to 10.0 wt. % of Al, 20.0 wt. % to 25.0 wt. % Cr, less than 0.4 wt. % Si, and at least 35.0 wt. % Fe with the balance being Ni, wherein the inner tube layer is formed plasma powder welding the alumina forming bulk alloy on the inner surface of the outer tube layer; and iii) an oxide layer formed on the surface of the inner tube layer, wherein the oxide layer is substantially comprised of alumina, chromia, silica, mullite, spinels, or mixtures thereof. | 04-26-2012 |
20120199518 | Cyclone Plenum Turbulator - Methods and apparatus for preventing coke formation in a plenum are provided. The apparatus can include a turbulator for use in a plenum. The turbulator can include a deflector disposed inside the plenum proximate an inlet to the plenum from a cyclone, wherein the plenum and the cyclone are disposed in a fluid catalytic cracker. | 08-09-2012 |
20130292302 | CATALYTIC CRACKING PROCESS FOR THE TREATMENT OF A FRACTION HAVING A LOW CONRADSON CARBON RESIDUE - Process for the fluidized-bed catalytic cracking of a weakly coking feedstock having a Conradson carbon residue equal to or less than 0.1% by weight and a hydrogen content equal to or greater than 12.7% by weight, comprising at least a step of cracking the feedstock, a step of separating/stripping the effluents from the coked catalyst particles and a step of regenerating said particles, the process being characterized in that at least one coking, carbonaceous and/or hydrocarbonaceous effluent having a content of aromatic compounds of greater than 50% by weight, comprising more than 20% by weight of polyaromatic compounds, is recycled to homogeneously distributed and weakly coked catalyst, before regeneration, in order to adjust the delta coke of the process. | 11-07-2013 |
20140034554 | METHODS AND FUEL PROCESSING APPARATUSES FOR UPGRADING A PYROLYSIS OIL STREAM AND A HYDROCARBON STREAM - Methods and apparatuses for upgrading a pyrolysis oil stream and a hydrocarbon stream are provided. In an embodiment, a method for upgrading a pyrolysis oil stream and a hydrocarbon stream includes providing the pyrolysis oil stream and providing the hydrocarbon stream separate from the pyrolysis oil stream. The pyrolysis oil stream and the hydrocarbon stream are introduced into a reaction zone. Deposits form adjacent to a pyrolysis oil outlet of the pyrolysis oil stream. The pyrolysis oil stream and the hydrocarbon stream are catalytically cracked in the presence of a particulate cracking catalyst in the reaction zone. During catalytic cracking, the pyrolysis oil deposits adjacent the pyrolysis oil outlet of the pyrolysis oil stream are removed, such as with a cleaning head. | 02-06-2014 |
20140311953 | METHOD TO OPTIMIZE RUN LENGTHS AND PRODUCT QUALITY IN COKING PROCESSES AND SYSTEM FOR PERFORMING THE SAME - System to detect coking in at least one component of refinery equipment is provided. The system includes a fiber optic assembly having at least one optical fiber operably coupled with the component, the fiber optic assembly further including a light source to transmit light having a known parameter through the optical fiber and a receiver to receive the light from the optical fiber, and a processor in communication with the fiber optic assembly to identify a shift in the parameter received by the receiver, the shift corresponding to an operating characteristic of the component. Method also provided for detecting coking using the system to detect coking disclosed herein. | 10-23-2014 |
20090038995 | Method for reducing oil fouling in heat transfer equipment - A method of reducing asphaltene and particulate induced fouling during the thermal processing of petroleum oils utilizes resin extracts from HSDP crude oils to disperse and solubilize asphaltenes and disperse inorganic particulate contaminants such as salts and iron oxide. The extracts are essentially maltene fractions which may be separated from the HSDP crude by a process of extraction from a precipitated asphalt fraction using light paraffinic solvents such as n-heptane. | 02-12-2009 |
20090152172 | IN-SITU CONTINUOUS COKE DEPOSIT REMOVAL BY CATALYTIC STEAM GASIFICATION - A coke removal system removes coke deposits from the walls of a high temperature passage in which hydrocarbon fuel is present. The system includes a carbon-steam gasification catalyst and a water source. The carbon-steam gasification catalyst is applied to the walls of the high temperature passage. The water reacts with the coke deposits on the walls of the high temperature passage to remove the coke deposits from the walls of the high temperature passage by carbon-steam gasification in the presence of the carbon-steam gasification catalyst. | 06-18-2009 |
20090211947 | Method for Reducing Fouling in Furnaces - Heat exchanger fouling in organic chemical production processes may be reduced using an antifoulant additive. The antifoulant additive may have one component selected from the group consisting of an alkylphosphate ester, and an alpha olefin maleic anhydride copolymer; or it may have two components selected from the group consisting of a metallic overbase, an alkylphosphate ester, and an alpha olefin maleic anhydride copolymer, wherein at least one of the two components in not an overbase. An additive having three components: a metallic overbase, an alkylphosphate ester, and an alpha olefin maleic anhydride copolymer; is also within the scope of the disclosure. The abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. | 08-27-2009 |
20090283451 | COMPOSITIONS TO MITIGATE COKE FORMATION IN STEAM CRACKING OF HYDROCARBONS - The invention relates to a combination of compounds and a process using such combination useful for reducing or preventing coke formation in thermal cracking furnaces such as ethylene steam crackers. The combination is comprised of one or more compound of the formula R—S | 11-19-2009 |
20090314689 | Method to alter coke morphology using either polynuclear aromatic compounds or functionalized lignin - A method for altering coke morphology in a delayed coking process of heavy oil is provided. An effective amount of one or more oil dispersible or oil soluble polynuclear aromatic compounds, or functionalized lignin, is added or contacted with the resid or heavy oil at a point before or after the step of heating the heavy oil to coking temperatures. The addition of additives facilitates the formation of shot coke and inhibits the formation of sponge coke. | 12-24-2009 |
20100038289 | METAL SULPHONATE ADDITIVES FOR FOULING MITIGATION IN PETROLEUM REFINERY PROCESSES - The present application provides a method for reducing fouling, including particulate-induced fouling, in a hydrocarbon refining process including the steps of providing a crude hydrocarbon for a refining process; adding an additive selected from: | 02-18-2010 |
20100038290 | POLYALKYL SUCCINIC ACID DERIVATIVES AS ADDITIVES FOR FOULING MITIGATION IN PETROLEUM REFINERY PROCESSES - The present application provides a method for reducing fouling, including particulate-induced fouling, in a hydrocarbon refining process including the steps of providing a crude hydrocarbon for a refining process; adding a polyalkyl succinic acid derivative additive. The additive can be complexed with a boronating agent, such as boric acid, to yield a boron-containing polyalkyl succinic acid derivative. | 02-18-2010 |
20100163461 | METHOD AND SYSTEM FOR CONTROLLING THE AMOUNT OF ANTI-FOULING ADDITIVE FOR PARTICULATE-INDUCED FOULING MITIGATION IN REFINING OPERATIONS - A method and system for controlling fouling in a hydrocarbon refining process that includes measuring a level of a particulate in a process stream of the hydrocarbon refining process in communication with a hydrocarbon refinery component, identifying an effective amount of additive capable of reducing particulate-induced fouling based at least in part on the measured level of the particulate in the process stream, and introducing the effective amount of additive to the hydrocarbon refining process. | 07-01-2010 |
20100170829 | POLYALKYL SUCCINIC ANHYDRIDE DERIVATIVES AS ADDITIVES FOR FOULING MITIGATION IN PETROLEUM REFINERY PROCESSES - The present invention provides a method for reducing fouling, including particulate-induced fouling, in a hydrocarbon refining process including the steps of providing a crude hydrocarbon for a refining process; adding at least one polyalkyl succinic anhydride derivative additive disclosed herein. The additive can be complexed with a boronating agent, such as boric acid, to yield a boron-containing polyalkyl succinic anhydride derivative. | 07-08-2010 |
20100170830 | Mitigation of top of catalyst bed fouling - This invention relates to reactors with mitigation of fouling-related pressure buildup, the reactors having a reactor bed containing at least one catalyst layer through which reactants flow. The mitigation of fouling which occurs at the top of the reactor bed is accomplished by using at least one blowback ring located near the top of the reactor bed. | 07-08-2010 |
20100243537 | PROCESS FOR INHIBITING FOULING IN HYDROCARBON PROCESSING - A method for inhibiting the formation of fouling materials including contacting hydrocarbon media containing aldehyde compounds with an antifoulant while treating the hydrocarbon media with a basic wash. The antifoulant includes a reducing sugar. | 09-30-2010 |
20100258480 | PROCESSES FOR INHIBITING FOULDING IN HYDROCARBON PROCESSING - A method for inhibiting the formation of fouling materials including contacting hydrocarbon media containing carbonyl compounds with hydroxylamine and naphthalene sulfonate while treating the hydrocarbon media with a basic wash. | 10-14-2010 |
20110031165 | PROCESSES FOR REMOVING HYDROGEN SULFIDE FROM REFINED HYDROCARBON STREAMS - A method for reducing the amount of hydrogen sulfide present in refined hydrocarbon streams and reducing the amount of corrosion in processing equipment contacting the refined hydrocarbon stream. The method includes adding a corrosion inhibitor to the refined hydrocarbon stream in contact with the processing equipment to protect the processing equipment and adding glyoxal to the refined hydrocarbon stream in contact with the protected processing equipment. The corrosion inhibitor includes an organic soluble compound having a nitrogen-containing ring. | 02-10-2011 |
20110042273 | Method for Reducing Coke Fouling in a Burner Tip - A method for reducing coke fouling in a burner tip when a waste gas stream containing unsaturated hydrocarbons is combusted by coating the interior of the burner tip and/or impregnating the body of the burner tip with a hydrocarbon hydrogenation promoting catalyst and/or a combustion catalyst. | 02-24-2011 |
20110247967 | DEPOSIT MITIGATION IN GASOLINE FRACTIONATION, QUENCH WATER SYSTEM AND PRODUCT RECOVERY SECTION - A method for selecting a solvent or mixture of solvents useful for mitigating deposit formation, cleaning existing deposits, and/or decreasing the rate of deposit formation is disclosed. Decreasing the rate at which deposits may form and/or increasing the rate at which deposits may be removed can dramatically improve process economics (e.g., decreasing down time as a result of deposit formation). In one aspect, embodiments disclosed herein relate to a process for dispersing foulants in a hydrocarbon stream, including the steps of: determining a nature of foulants in a hydrocarbon stream; selecting a solvent or a mixture of solvents suitable to disperse the foulants based upon the determined nature; and contacting the foulants with the selected solvent or mixture of solvents. | 10-13-2011 |
20120118794 | METHODS FOR MITIGATING FOULING OF PROCESS EQUIPMENT - Methods for determining the fouling propensity of a hydrocarbon stream and for reducing fouling are provided. In one method, the fouling propensity of a hydrocarbon stream is determined by obtaining a parameter indicative of the fouling propensity by a regression of a series of temperature measurements data for the hydrocarbon stream exiting a test unit. In another method, an effective minimal amount of an antifoulant is added to a hydrocarbon stream to reduce fouling, where the amount of the antifoulant is determined based on the fouling propensity of the hydrocarbon stream. | 05-17-2012 |
20130270157 | METHOD, APPARATUS AND CHEMICAL PRODUCTS FOR TREATING PETROLEUM EQUIPMENT - The present invention provides a method, an apparatus and chemical products for treating petroleum equipment wherein a fluid is flowing, preferably of the hydrocarbon type, and wherein treating is performed by establishing a closed or semi-closed flow circulation loop, during the normal production operations of the equipment. The treatment can refer to the cleaning of equipment, to yield improvement as compared to normal run conditions and/or to a reduction of coke formation and/or to coke removal on catalysts. | 10-17-2013 |
20100006478 | Process for the On-Stream Decoking of a Furnace for Cracking a Hydrocarbon Feed - A process for the on-stream decoking of a steam cracking furnace, the steam cracking furnace including multiple tube banks positioned between a hydrocarbon feedstock inlet and a convection section to radiant section crossover, each tube bank including a plurality of tubes arranged within the tube bank, the process comprising the steps of terminating the flow of hydrocarbon feed to a portion of the plurality of tubes of less than all of the multiple tube banks, and supplying a decoking feed comprising steam to the portion of the plurality of tubes of less than all of the multiple tube banks in sufficient amount to effect removal of coke accumulated on the interior of the radiant coils and quench system components fed by such tubes while maintaining a temperature at the convection section to radiant section crossover of below about 788° C. A furnace for the production of ethylene is also provided. | 01-14-2010 |
20140061100 | Process for Reducing the Asphaltene Yield and Recovering Waste Heat in a Pyrolysis Process by Quenching with a Hydroprocessed Product - The invention relates to upgraded pyrolysis products, processes for upgrading products obtained from hydrocarbon pyrolysis, equipment useful for such processes, and the use of upgraded pyrolysis products. | 03-06-2014 |
20160168479 | Process and Apparatus for Decoking A Hydocarbon Steam Cracking Furnace | 06-16-2016 |
208048000 | Quench | 3 |
20090020459 | ETHYLENE FURNACE RADIANT COIL DECOKING METHOD - Methods are provided for decoking the radiant coils in an ethylene cracking plant. The decoking process is controlled by monitoring the coil outlet temperature to control the rate of burning of coke in the radiant coils. Air flow rates, steam flow rates and coil outlet temperatures are controlled during the decoking process to prevent tube damage, minimize decoking time and maximize coke removal. | 01-22-2009 |
20090211948 | METHOD AND DEVICE FOR SWITCHING OVER SHUT-OFF MEMBERS ON CRACKING FURNACES - The invention relates to a method and also a device for switching over a cracking furnace between production mode and decoking mode, wherein a first shut-off member (TLV), which is arranged in the transfer line and equipped with a first actuating drive, and a second shut-off member (EGV), which is arranged in the decoking line and equipped with a second actuating drive, are actuated simultaneously and wherein the differential pressure DP across the shut-off member TLV is continuously measured and monitored. The actuation of the shut-off members TLV and EGV is carried out in an automated manner, wherein TLV is moved monotonously between its end positions, while the second actuating drive is triggered by the actuating signal of a control means and EGV is as a result actuated in such a way that DP is at all times approximated to a predefined target value (DP target). | 08-27-2009 |
20100282645 | PRE-PASSIVATION PROCESS FOR A CONTINUOUS REFORMING APPARATUS, AND PASSIVATION PROCESS FOR A CONTINUOUS REFORMING APPARATUS DURING THE INITIAL REACATION - The present invention relates to a pre-passivation process for a continuous reforming apparatus prior to the reaction, or a passivation process for a continuous reforming apparatus during the initial reaction, comprising loading a reforming catalyst into the continuous reforming apparatus, starting the gas circulation and raising the temperature of a reactor, injecting sulfide into the gas at a reactor temperature ranging from 100-650° C., controlling the sulfur amount in the recycle gas within a range of 0.5-100×10 | 11-11-2010 |
20100288679 | PROCESS FOR THE DEEP DESULFURIZATION OF HEAVY PYROLYSIS GASOLINE - A process for the deep desulfurization of a heavy pyrolysis gasoline to very low levels of organic sulfur, e.g., 30 ppmv or less, with minimal octane number loss through aromatics saturation. The deep desulfurization is accomplished by contacting the heavy pyrolysis gasoline feedstock, partially in liquid and partially in gaseous phase, with a hydrogen treat gas containing a minimum H | 11-18-2010 |
20100294701 | METHODS FOR HYDROCRACKING A HEAVY OIL FEEDSTOCK USING AN IN SITU COLLOIDAL OR MOLECULAR CATALYST AND RECYCLING THE COLLOIDAL OR MOLECULAR CATALYST - A hydrocracking system involves introducing a heavy oil feedstock and a colloidal or molecular catalyst, or a precursor composition capable of forming the colloidal or molecular catalyst, into a hydrocracking reactor. The colloidal or molecular catalyst is formed in situ within the heavy oil feedstock by intimately mixing a catalyst precursor composition into a heavy oil feedstock and raising the temperature of the feedstock to above the decomposition temperature of the precursor composition to form the colloidal or molecular catalyst. The colloidal or molecular catalyst catalyzes upgrading reactions between the heavy oil feedstock and hydrogen and eliminates or reduces formation of coke precursors and sediment. At least a portion of a resid fraction containing residual colloidal or molecular catalyst is recycled back into the hydrocracking reactor to further upgrade the recycled resid fraction portion and provide recycled colloidal or molecular catalyst within the hydrocracking reactor. | 11-25-2010 |
20100320126 | METHOD AND APPARATUS FOR THERMAL CRACKING ORGANIC MACROMOLECULE MIXTURE TO RECYCLE DIFFERENTIATED SUBSTRATES - A method and an apparatus for thermal cracking organic macromolecule mixture to recycle differentiated substrates, comprising mainly of thermal cracking organic macromolecule by using molten inorganic salt, which can separate easily substrates mixed in macromolecular materials, achieve readily the object of differentiation, obtain large area (volume) of substrates without damaging the characteristics of original substrates, increase re-usability, and even more important, in the course of treatment, accomplish simultaneously objects of energy-saving and carbon-reducing as well as pollution control, thereby provide method for treating organic macromolecule wastes, a method and an apparatus for differentiating substrates. | 12-23-2010 |
20110062058 | METHOD FOR DETERMINING ASPHALTENE STABILITY OF A HYDROCARBON-CONTAINING MATERIAL - A method for determining asphaltene stability in a hydrocarbon-containing material having solvated asphaltenes therein is disclosed. The method involves the steps of: (a) precipitating an amount of the asphaltenes from a liquid sample of the hydrocarbon-containing material with an alkane mobile phase solvent in a column; (b) dissolving a first amount and a second amount of the precipitated asphaltenes by gradually and continuously changing the alkane mobile phase solvent to a final mobile phase solvent having a solubility parameter at least 1 MPa | 03-17-2011 |
20110220553 | METHODS AND SYSTEMS FOR HYDROCRACKING A HEAVY OIL FEEDSTOCK USING AN IN SITU COLLOIDAL OR MOLECULAR CATALYST - A hydrocracking system involves introducing a heavy oil feedstock and a colloidal or molecular catalyst, or a catalyst precursor capable of forming the colloidal or molecular catalyst, into a hydrocracking reactor. The colloidal or molecular catalyst is formed in situ within the heavy oil feedstock by 1) premixing the catalyst precursor with a hydrocarbon diluents to form a catalyst precursor mixture, 2) mixing the catalyst precursor mixture with the heavy oil feedstock, and 3) raising the temperature of the feedstock to above the decomposition temperature of the catalyst precursor to form the colloidal or molecular catalyst. The colloidal or molecular catalyst catalyzes upgrading reactions between the heavy oil feedstock and hydrogen and eliminates or reduces formation of coke precursors and sediment. The colloidal or molecular catalyst can be the sole or primary hydrocracking catalyst in a stand-alone hydrocracking reactor or it can be used together with a porous supported catalyst within a fixed bed or ebullated bed reactor. | 09-15-2011 |
20120097581 | Alumina Forming Bimetallic Tube for Refinery Process Furnaces and Method of Making and Using - Provided is a bimetallic tube for transport of hydrocarbon feedstocks in refinery process furnaces, and more particularly in furnace radiant coils, including: i) an outer tube layer being formed from carbon steels or low chromium steels comprising less than 15.0 wt. % Cr based on the total weight of the steel; ii) an inner tube layer being formed from an alumina forming bulk alloy including 5.0 to 10.0 wt. % of Al, 20.0 wt. % to 25.0 wt. % Cr, less than 0.4 wt. % Si, and at least 35.0 wt. % Fe with the balance being Ni, wherein the inner tube layer is formed plasma powder welding the alumina forming bulk alloy on the inner surface of the outer tube layer; and iii) an oxide layer formed on the surface of the inner tube layer, wherein the oxide layer is substantially comprised of alumina, chromia, silica, mullite, spinels, or mixtures thereof. | 04-26-2012 |
20120199518 | Cyclone Plenum Turbulator - Methods and apparatus for preventing coke formation in a plenum are provided. The apparatus can include a turbulator for use in a plenum. The turbulator can include a deflector disposed inside the plenum proximate an inlet to the plenum from a cyclone, wherein the plenum and the cyclone are disposed in a fluid catalytic cracker. | 08-09-2012 |
20130292302 | CATALYTIC CRACKING PROCESS FOR THE TREATMENT OF A FRACTION HAVING A LOW CONRADSON CARBON RESIDUE - Process for the fluidized-bed catalytic cracking of a weakly coking feedstock having a Conradson carbon residue equal to or less than 0.1% by weight and a hydrogen content equal to or greater than 12.7% by weight, comprising at least a step of cracking the feedstock, a step of separating/stripping the effluents from the coked catalyst particles and a step of regenerating said particles, the process being characterized in that at least one coking, carbonaceous and/or hydrocarbonaceous effluent having a content of aromatic compounds of greater than 50% by weight, comprising more than 20% by weight of polyaromatic compounds, is recycled to homogeneously distributed and weakly coked catalyst, before regeneration, in order to adjust the delta coke of the process. | 11-07-2013 |
20140034554 | METHODS AND FUEL PROCESSING APPARATUSES FOR UPGRADING A PYROLYSIS OIL STREAM AND A HYDROCARBON STREAM - Methods and apparatuses for upgrading a pyrolysis oil stream and a hydrocarbon stream are provided. In an embodiment, a method for upgrading a pyrolysis oil stream and a hydrocarbon stream includes providing the pyrolysis oil stream and providing the hydrocarbon stream separate from the pyrolysis oil stream. The pyrolysis oil stream and the hydrocarbon stream are introduced into a reaction zone. Deposits form adjacent to a pyrolysis oil outlet of the pyrolysis oil stream. The pyrolysis oil stream and the hydrocarbon stream are catalytically cracked in the presence of a particulate cracking catalyst in the reaction zone. During catalytic cracking, the pyrolysis oil deposits adjacent the pyrolysis oil outlet of the pyrolysis oil stream are removed, such as with a cleaning head. | 02-06-2014 |
20140311953 | METHOD TO OPTIMIZE RUN LENGTHS AND PRODUCT QUALITY IN COKING PROCESSES AND SYSTEM FOR PERFORMING THE SAME - System to detect coking in at least one component of refinery equipment is provided. The system includes a fiber optic assembly having at least one optical fiber operably coupled with the component, the fiber optic assembly further including a light source to transmit light having a known parameter through the optical fiber and a receiver to receive the light from the optical fiber, and a processor in communication with the fiber optic assembly to identify a shift in the parameter received by the receiver, the shift corresponding to an operating characteristic of the component. Method also provided for detecting coking using the system to detect coking disclosed herein. | 10-23-2014 |
20090038995 | Method for reducing oil fouling in heat transfer equipment - A method of reducing asphaltene and particulate induced fouling during the thermal processing of petroleum oils utilizes resin extracts from HSDP crude oils to disperse and solubilize asphaltenes and disperse inorganic particulate contaminants such as salts and iron oxide. The extracts are essentially maltene fractions which may be separated from the HSDP crude by a process of extraction from a precipitated asphalt fraction using light paraffinic solvents such as n-heptane. | 02-12-2009 |
20090152172 | IN-SITU CONTINUOUS COKE DEPOSIT REMOVAL BY CATALYTIC STEAM GASIFICATION - A coke removal system removes coke deposits from the walls of a high temperature passage in which hydrocarbon fuel is present. The system includes a carbon-steam gasification catalyst and a water source. The carbon-steam gasification catalyst is applied to the walls of the high temperature passage. The water reacts with the coke deposits on the walls of the high temperature passage to remove the coke deposits from the walls of the high temperature passage by carbon-steam gasification in the presence of the carbon-steam gasification catalyst. | 06-18-2009 |
20090211947 | Method for Reducing Fouling in Furnaces - Heat exchanger fouling in organic chemical production processes may be reduced using an antifoulant additive. The antifoulant additive may have one component selected from the group consisting of an alkylphosphate ester, and an alpha olefin maleic anhydride copolymer; or it may have two components selected from the group consisting of a metallic overbase, an alkylphosphate ester, and an alpha olefin maleic anhydride copolymer, wherein at least one of the two components in not an overbase. An additive having three components: a metallic overbase, an alkylphosphate ester, and an alpha olefin maleic anhydride copolymer; is also within the scope of the disclosure. The abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. | 08-27-2009 |
20090283451 | COMPOSITIONS TO MITIGATE COKE FORMATION IN STEAM CRACKING OF HYDROCARBONS - The invention relates to a combination of compounds and a process using such combination useful for reducing or preventing coke formation in thermal cracking furnaces such as ethylene steam crackers. The combination is comprised of one or more compound of the formula R—S | 11-19-2009 |
20090314689 | Method to alter coke morphology using either polynuclear aromatic compounds or functionalized lignin - A method for altering coke morphology in a delayed coking process of heavy oil is provided. An effective amount of one or more oil dispersible or oil soluble polynuclear aromatic compounds, or functionalized lignin, is added or contacted with the resid or heavy oil at a point before or after the step of heating the heavy oil to coking temperatures. The addition of additives facilitates the formation of shot coke and inhibits the formation of sponge coke. | 12-24-2009 |
20100038289 | METAL SULPHONATE ADDITIVES FOR FOULING MITIGATION IN PETROLEUM REFINERY PROCESSES - The present application provides a method for reducing fouling, including particulate-induced fouling, in a hydrocarbon refining process including the steps of providing a crude hydrocarbon for a refining process; adding an additive selected from: | 02-18-2010 |
20100038290 | POLYALKYL SUCCINIC ACID DERIVATIVES AS ADDITIVES FOR FOULING MITIGATION IN PETROLEUM REFINERY PROCESSES - The present application provides a method for reducing fouling, including particulate-induced fouling, in a hydrocarbon refining process including the steps of providing a crude hydrocarbon for a refining process; adding a polyalkyl succinic acid derivative additive. The additive can be complexed with a boronating agent, such as boric acid, to yield a boron-containing polyalkyl succinic acid derivative. | 02-18-2010 |
20100163461 | METHOD AND SYSTEM FOR CONTROLLING THE AMOUNT OF ANTI-FOULING ADDITIVE FOR PARTICULATE-INDUCED FOULING MITIGATION IN REFINING OPERATIONS - A method and system for controlling fouling in a hydrocarbon refining process that includes measuring a level of a particulate in a process stream of the hydrocarbon refining process in communication with a hydrocarbon refinery component, identifying an effective amount of additive capable of reducing particulate-induced fouling based at least in part on the measured level of the particulate in the process stream, and introducing the effective amount of additive to the hydrocarbon refining process. | 07-01-2010 |
20100170829 | POLYALKYL SUCCINIC ANHYDRIDE DERIVATIVES AS ADDITIVES FOR FOULING MITIGATION IN PETROLEUM REFINERY PROCESSES - The present invention provides a method for reducing fouling, including particulate-induced fouling, in a hydrocarbon refining process including the steps of providing a crude hydrocarbon for a refining process; adding at least one polyalkyl succinic anhydride derivative additive disclosed herein. The additive can be complexed with a boronating agent, such as boric acid, to yield a boron-containing polyalkyl succinic anhydride derivative. | 07-08-2010 |
20100170830 | Mitigation of top of catalyst bed fouling - This invention relates to reactors with mitigation of fouling-related pressure buildup, the reactors having a reactor bed containing at least one catalyst layer through which reactants flow. The mitigation of fouling which occurs at the top of the reactor bed is accomplished by using at least one blowback ring located near the top of the reactor bed. | 07-08-2010 |
20100243537 | PROCESS FOR INHIBITING FOULING IN HYDROCARBON PROCESSING - A method for inhibiting the formation of fouling materials including contacting hydrocarbon media containing aldehyde compounds with an antifoulant while treating the hydrocarbon media with a basic wash. The antifoulant includes a reducing sugar. | 09-30-2010 |
20100258480 | PROCESSES FOR INHIBITING FOULDING IN HYDROCARBON PROCESSING - A method for inhibiting the formation of fouling materials including contacting hydrocarbon media containing carbonyl compounds with hydroxylamine and naphthalene sulfonate while treating the hydrocarbon media with a basic wash. | 10-14-2010 |
20110031165 | PROCESSES FOR REMOVING HYDROGEN SULFIDE FROM REFINED HYDROCARBON STREAMS - A method for reducing the amount of hydrogen sulfide present in refined hydrocarbon streams and reducing the amount of corrosion in processing equipment contacting the refined hydrocarbon stream. The method includes adding a corrosion inhibitor to the refined hydrocarbon stream in contact with the processing equipment to protect the processing equipment and adding glyoxal to the refined hydrocarbon stream in contact with the protected processing equipment. The corrosion inhibitor includes an organic soluble compound having a nitrogen-containing ring. | 02-10-2011 |
20110042273 | Method for Reducing Coke Fouling in a Burner Tip - A method for reducing coke fouling in a burner tip when a waste gas stream containing unsaturated hydrocarbons is combusted by coating the interior of the burner tip and/or impregnating the body of the burner tip with a hydrocarbon hydrogenation promoting catalyst and/or a combustion catalyst. | 02-24-2011 |
20110247967 | DEPOSIT MITIGATION IN GASOLINE FRACTIONATION, QUENCH WATER SYSTEM AND PRODUCT RECOVERY SECTION - A method for selecting a solvent or mixture of solvents useful for mitigating deposit formation, cleaning existing deposits, and/or decreasing the rate of deposit formation is disclosed. Decreasing the rate at which deposits may form and/or increasing the rate at which deposits may be removed can dramatically improve process economics (e.g., decreasing down time as a result of deposit formation). In one aspect, embodiments disclosed herein relate to a process for dispersing foulants in a hydrocarbon stream, including the steps of: determining a nature of foulants in a hydrocarbon stream; selecting a solvent or a mixture of solvents suitable to disperse the foulants based upon the determined nature; and contacting the foulants with the selected solvent or mixture of solvents. | 10-13-2011 |
20120118794 | METHODS FOR MITIGATING FOULING OF PROCESS EQUIPMENT - Methods for determining the fouling propensity of a hydrocarbon stream and for reducing fouling are provided. In one method, the fouling propensity of a hydrocarbon stream is determined by obtaining a parameter indicative of the fouling propensity by a regression of a series of temperature measurements data for the hydrocarbon stream exiting a test unit. In another method, an effective minimal amount of an antifoulant is added to a hydrocarbon stream to reduce fouling, where the amount of the antifoulant is determined based on the fouling propensity of the hydrocarbon stream. | 05-17-2012 |
20130270157 | METHOD, APPARATUS AND CHEMICAL PRODUCTS FOR TREATING PETROLEUM EQUIPMENT - The present invention provides a method, an apparatus and chemical products for treating petroleum equipment wherein a fluid is flowing, preferably of the hydrocarbon type, and wherein treating is performed by establishing a closed or semi-closed flow circulation loop, during the normal production operations of the equipment. The treatment can refer to the cleaning of equipment, to yield improvement as compared to normal run conditions and/or to a reduction of coke formation and/or to coke removal on catalysts. | 10-17-2013 |
20100006478 | Process for the On-Stream Decoking of a Furnace for Cracking a Hydrocarbon Feed - A process for the on-stream decoking of a steam cracking furnace, the steam cracking furnace including multiple tube banks positioned between a hydrocarbon feedstock inlet and a convection section to radiant section crossover, each tube bank including a plurality of tubes arranged within the tube bank, the process comprising the steps of terminating the flow of hydrocarbon feed to a portion of the plurality of tubes of less than all of the multiple tube banks, and supplying a decoking feed comprising steam to the portion of the plurality of tubes of less than all of the multiple tube banks in sufficient amount to effect removal of coke accumulated on the interior of the radiant coils and quench system components fed by such tubes while maintaining a temperature at the convection section to radiant section crossover of below about 788° C. A furnace for the production of ethylene is also provided. | 01-14-2010 |
20140061100 | Process for Reducing the Asphaltene Yield and Recovering Waste Heat in a Pyrolysis Process by Quenching with a Hydroprocessed Product - The invention relates to upgraded pyrolysis products, processes for upgrading products obtained from hydrocarbon pyrolysis, equipment useful for such processes, and the use of upgraded pyrolysis products. | 03-06-2014 |
20160168479 | Process and Apparatus for Decoking A Hydocarbon Steam Cracking Furnace | 06-16-2016 |
208048000 | Antifoulant additive | 17 |
20090020459 | ETHYLENE FURNACE RADIANT COIL DECOKING METHOD - Methods are provided for decoking the radiant coils in an ethylene cracking plant. The decoking process is controlled by monitoring the coil outlet temperature to control the rate of burning of coke in the radiant coils. Air flow rates, steam flow rates and coil outlet temperatures are controlled during the decoking process to prevent tube damage, minimize decoking time and maximize coke removal. | 01-22-2009 |
20090211948 | METHOD AND DEVICE FOR SWITCHING OVER SHUT-OFF MEMBERS ON CRACKING FURNACES - The invention relates to a method and also a device for switching over a cracking furnace between production mode and decoking mode, wherein a first shut-off member (TLV), which is arranged in the transfer line and equipped with a first actuating drive, and a second shut-off member (EGV), which is arranged in the decoking line and equipped with a second actuating drive, are actuated simultaneously and wherein the differential pressure DP across the shut-off member TLV is continuously measured and monitored. The actuation of the shut-off members TLV and EGV is carried out in an automated manner, wherein TLV is moved monotonously between its end positions, while the second actuating drive is triggered by the actuating signal of a control means and EGV is as a result actuated in such a way that DP is at all times approximated to a predefined target value (DP target). | 08-27-2009 |
20100282645 | PRE-PASSIVATION PROCESS FOR A CONTINUOUS REFORMING APPARATUS, AND PASSIVATION PROCESS FOR A CONTINUOUS REFORMING APPARATUS DURING THE INITIAL REACATION - The present invention relates to a pre-passivation process for a continuous reforming apparatus prior to the reaction, or a passivation process for a continuous reforming apparatus during the initial reaction, comprising loading a reforming catalyst into the continuous reforming apparatus, starting the gas circulation and raising the temperature of a reactor, injecting sulfide into the gas at a reactor temperature ranging from 100-650° C., controlling the sulfur amount in the recycle gas within a range of 0.5-100×10 | 11-11-2010 |
20100288679 | PROCESS FOR THE DEEP DESULFURIZATION OF HEAVY PYROLYSIS GASOLINE - A process for the deep desulfurization of a heavy pyrolysis gasoline to very low levels of organic sulfur, e.g., 30 ppmv or less, with minimal octane number loss through aromatics saturation. The deep desulfurization is accomplished by contacting the heavy pyrolysis gasoline feedstock, partially in liquid and partially in gaseous phase, with a hydrogen treat gas containing a minimum H | 11-18-2010 |
20100294701 | METHODS FOR HYDROCRACKING A HEAVY OIL FEEDSTOCK USING AN IN SITU COLLOIDAL OR MOLECULAR CATALYST AND RECYCLING THE COLLOIDAL OR MOLECULAR CATALYST - A hydrocracking system involves introducing a heavy oil feedstock and a colloidal or molecular catalyst, or a precursor composition capable of forming the colloidal or molecular catalyst, into a hydrocracking reactor. The colloidal or molecular catalyst is formed in situ within the heavy oil feedstock by intimately mixing a catalyst precursor composition into a heavy oil feedstock and raising the temperature of the feedstock to above the decomposition temperature of the precursor composition to form the colloidal or molecular catalyst. The colloidal or molecular catalyst catalyzes upgrading reactions between the heavy oil feedstock and hydrogen and eliminates or reduces formation of coke precursors and sediment. At least a portion of a resid fraction containing residual colloidal or molecular catalyst is recycled back into the hydrocracking reactor to further upgrade the recycled resid fraction portion and provide recycled colloidal or molecular catalyst within the hydrocracking reactor. | 11-25-2010 |
20100320126 | METHOD AND APPARATUS FOR THERMAL CRACKING ORGANIC MACROMOLECULE MIXTURE TO RECYCLE DIFFERENTIATED SUBSTRATES - A method and an apparatus for thermal cracking organic macromolecule mixture to recycle differentiated substrates, comprising mainly of thermal cracking organic macromolecule by using molten inorganic salt, which can separate easily substrates mixed in macromolecular materials, achieve readily the object of differentiation, obtain large area (volume) of substrates without damaging the characteristics of original substrates, increase re-usability, and even more important, in the course of treatment, accomplish simultaneously objects of energy-saving and carbon-reducing as well as pollution control, thereby provide method for treating organic macromolecule wastes, a method and an apparatus for differentiating substrates. | 12-23-2010 |
20110062058 | METHOD FOR DETERMINING ASPHALTENE STABILITY OF A HYDROCARBON-CONTAINING MATERIAL - A method for determining asphaltene stability in a hydrocarbon-containing material having solvated asphaltenes therein is disclosed. The method involves the steps of: (a) precipitating an amount of the asphaltenes from a liquid sample of the hydrocarbon-containing material with an alkane mobile phase solvent in a column; (b) dissolving a first amount and a second amount of the precipitated asphaltenes by gradually and continuously changing the alkane mobile phase solvent to a final mobile phase solvent having a solubility parameter at least 1 MPa | 03-17-2011 |
20110220553 | METHODS AND SYSTEMS FOR HYDROCRACKING A HEAVY OIL FEEDSTOCK USING AN IN SITU COLLOIDAL OR MOLECULAR CATALYST - A hydrocracking system involves introducing a heavy oil feedstock and a colloidal or molecular catalyst, or a catalyst precursor capable of forming the colloidal or molecular catalyst, into a hydrocracking reactor. The colloidal or molecular catalyst is formed in situ within the heavy oil feedstock by 1) premixing the catalyst precursor with a hydrocarbon diluents to form a catalyst precursor mixture, 2) mixing the catalyst precursor mixture with the heavy oil feedstock, and 3) raising the temperature of the feedstock to above the decomposition temperature of the catalyst precursor to form the colloidal or molecular catalyst. The colloidal or molecular catalyst catalyzes upgrading reactions between the heavy oil feedstock and hydrogen and eliminates or reduces formation of coke precursors and sediment. The colloidal or molecular catalyst can be the sole or primary hydrocracking catalyst in a stand-alone hydrocracking reactor or it can be used together with a porous supported catalyst within a fixed bed or ebullated bed reactor. | 09-15-2011 |
20120097581 | Alumina Forming Bimetallic Tube for Refinery Process Furnaces and Method of Making and Using - Provided is a bimetallic tube for transport of hydrocarbon feedstocks in refinery process furnaces, and more particularly in furnace radiant coils, including: i) an outer tube layer being formed from carbon steels or low chromium steels comprising less than 15.0 wt. % Cr based on the total weight of the steel; ii) an inner tube layer being formed from an alumina forming bulk alloy including 5.0 to 10.0 wt. % of Al, 20.0 wt. % to 25.0 wt. % Cr, less than 0.4 wt. % Si, and at least 35.0 wt. % Fe with the balance being Ni, wherein the inner tube layer is formed plasma powder welding the alumina forming bulk alloy on the inner surface of the outer tube layer; and iii) an oxide layer formed on the surface of the inner tube layer, wherein the oxide layer is substantially comprised of alumina, chromia, silica, mullite, spinels, or mixtures thereof. | 04-26-2012 |
20120199518 | Cyclone Plenum Turbulator - Methods and apparatus for preventing coke formation in a plenum are provided. The apparatus can include a turbulator for use in a plenum. The turbulator can include a deflector disposed inside the plenum proximate an inlet to the plenum from a cyclone, wherein the plenum and the cyclone are disposed in a fluid catalytic cracker. | 08-09-2012 |
20130292302 | CATALYTIC CRACKING PROCESS FOR THE TREATMENT OF A FRACTION HAVING A LOW CONRADSON CARBON RESIDUE - Process for the fluidized-bed catalytic cracking of a weakly coking feedstock having a Conradson carbon residue equal to or less than 0.1% by weight and a hydrogen content equal to or greater than 12.7% by weight, comprising at least a step of cracking the feedstock, a step of separating/stripping the effluents from the coked catalyst particles and a step of regenerating said particles, the process being characterized in that at least one coking, carbonaceous and/or hydrocarbonaceous effluent having a content of aromatic compounds of greater than 50% by weight, comprising more than 20% by weight of polyaromatic compounds, is recycled to homogeneously distributed and weakly coked catalyst, before regeneration, in order to adjust the delta coke of the process. | 11-07-2013 |
20140034554 | METHODS AND FUEL PROCESSING APPARATUSES FOR UPGRADING A PYROLYSIS OIL STREAM AND A HYDROCARBON STREAM - Methods and apparatuses for upgrading a pyrolysis oil stream and a hydrocarbon stream are provided. In an embodiment, a method for upgrading a pyrolysis oil stream and a hydrocarbon stream includes providing the pyrolysis oil stream and providing the hydrocarbon stream separate from the pyrolysis oil stream. The pyrolysis oil stream and the hydrocarbon stream are introduced into a reaction zone. Deposits form adjacent to a pyrolysis oil outlet of the pyrolysis oil stream. The pyrolysis oil stream and the hydrocarbon stream are catalytically cracked in the presence of a particulate cracking catalyst in the reaction zone. During catalytic cracking, the pyrolysis oil deposits adjacent the pyrolysis oil outlet of the pyrolysis oil stream are removed, such as with a cleaning head. | 02-06-2014 |
20140311953 | METHOD TO OPTIMIZE RUN LENGTHS AND PRODUCT QUALITY IN COKING PROCESSES AND SYSTEM FOR PERFORMING THE SAME - System to detect coking in at least one component of refinery equipment is provided. The system includes a fiber optic assembly having at least one optical fiber operably coupled with the component, the fiber optic assembly further including a light source to transmit light having a known parameter through the optical fiber and a receiver to receive the light from the optical fiber, and a processor in communication with the fiber optic assembly to identify a shift in the parameter received by the receiver, the shift corresponding to an operating characteristic of the component. Method also provided for detecting coking using the system to detect coking disclosed herein. | 10-23-2014 |
20090038995 | Method for reducing oil fouling in heat transfer equipment - A method of reducing asphaltene and particulate induced fouling during the thermal processing of petroleum oils utilizes resin extracts from HSDP crude oils to disperse and solubilize asphaltenes and disperse inorganic particulate contaminants such as salts and iron oxide. The extracts are essentially maltene fractions which may be separated from the HSDP crude by a process of extraction from a precipitated asphalt fraction using light paraffinic solvents such as n-heptane. | 02-12-2009 |
20090152172 | IN-SITU CONTINUOUS COKE DEPOSIT REMOVAL BY CATALYTIC STEAM GASIFICATION - A coke removal system removes coke deposits from the walls of a high temperature passage in which hydrocarbon fuel is present. The system includes a carbon-steam gasification catalyst and a water source. The carbon-steam gasification catalyst is applied to the walls of the high temperature passage. The water reacts with the coke deposits on the walls of the high temperature passage to remove the coke deposits from the walls of the high temperature passage by carbon-steam gasification in the presence of the carbon-steam gasification catalyst. | 06-18-2009 |
20090211947 | Method for Reducing Fouling in Furnaces - Heat exchanger fouling in organic chemical production processes may be reduced using an antifoulant additive. The antifoulant additive may have one component selected from the group consisting of an alkylphosphate ester, and an alpha olefin maleic anhydride copolymer; or it may have two components selected from the group consisting of a metallic overbase, an alkylphosphate ester, and an alpha olefin maleic anhydride copolymer, wherein at least one of the two components in not an overbase. An additive having three components: a metallic overbase, an alkylphosphate ester, and an alpha olefin maleic anhydride copolymer; is also within the scope of the disclosure. The abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. | 08-27-2009 |
20090283451 | COMPOSITIONS TO MITIGATE COKE FORMATION IN STEAM CRACKING OF HYDROCARBONS - The invention relates to a combination of compounds and a process using such combination useful for reducing or preventing coke formation in thermal cracking furnaces such as ethylene steam crackers. The combination is comprised of one or more compound of the formula R—S | 11-19-2009 |
20090314689 | Method to alter coke morphology using either polynuclear aromatic compounds or functionalized lignin - A method for altering coke morphology in a delayed coking process of heavy oil is provided. An effective amount of one or more oil dispersible or oil soluble polynuclear aromatic compounds, or functionalized lignin, is added or contacted with the resid or heavy oil at a point before or after the step of heating the heavy oil to coking temperatures. The addition of additives facilitates the formation of shot coke and inhibits the formation of sponge coke. | 12-24-2009 |
20100038289 | METAL SULPHONATE ADDITIVES FOR FOULING MITIGATION IN PETROLEUM REFINERY PROCESSES - The present application provides a method for reducing fouling, including particulate-induced fouling, in a hydrocarbon refining process including the steps of providing a crude hydrocarbon for a refining process; adding an additive selected from: | 02-18-2010 |
20100038290 | POLYALKYL SUCCINIC ACID DERIVATIVES AS ADDITIVES FOR FOULING MITIGATION IN PETROLEUM REFINERY PROCESSES - The present application provides a method for reducing fouling, including particulate-induced fouling, in a hydrocarbon refining process including the steps of providing a crude hydrocarbon for a refining process; adding a polyalkyl succinic acid derivative additive. The additive can be complexed with a boronating agent, such as boric acid, to yield a boron-containing polyalkyl succinic acid derivative. | 02-18-2010 |
20100163461 | METHOD AND SYSTEM FOR CONTROLLING THE AMOUNT OF ANTI-FOULING ADDITIVE FOR PARTICULATE-INDUCED FOULING MITIGATION IN REFINING OPERATIONS - A method and system for controlling fouling in a hydrocarbon refining process that includes measuring a level of a particulate in a process stream of the hydrocarbon refining process in communication with a hydrocarbon refinery component, identifying an effective amount of additive capable of reducing particulate-induced fouling based at least in part on the measured level of the particulate in the process stream, and introducing the effective amount of additive to the hydrocarbon refining process. | 07-01-2010 |
20100170829 | POLYALKYL SUCCINIC ANHYDRIDE DERIVATIVES AS ADDITIVES FOR FOULING MITIGATION IN PETROLEUM REFINERY PROCESSES - The present invention provides a method for reducing fouling, including particulate-induced fouling, in a hydrocarbon refining process including the steps of providing a crude hydrocarbon for a refining process; adding at least one polyalkyl succinic anhydride derivative additive disclosed herein. The additive can be complexed with a boronating agent, such as boric acid, to yield a boron-containing polyalkyl succinic anhydride derivative. | 07-08-2010 |
20100170830 | Mitigation of top of catalyst bed fouling - This invention relates to reactors with mitigation of fouling-related pressure buildup, the reactors having a reactor bed containing at least one catalyst layer through which reactants flow. The mitigation of fouling which occurs at the top of the reactor bed is accomplished by using at least one blowback ring located near the top of the reactor bed. | 07-08-2010 |
20100243537 | PROCESS FOR INHIBITING FOULING IN HYDROCARBON PROCESSING - A method for inhibiting the formation of fouling materials including contacting hydrocarbon media containing aldehyde compounds with an antifoulant while treating the hydrocarbon media with a basic wash. The antifoulant includes a reducing sugar. | 09-30-2010 |
20100258480 | PROCESSES FOR INHIBITING FOULDING IN HYDROCARBON PROCESSING - A method for inhibiting the formation of fouling materials including contacting hydrocarbon media containing carbonyl compounds with hydroxylamine and naphthalene sulfonate while treating the hydrocarbon media with a basic wash. | 10-14-2010 |
20110031165 | PROCESSES FOR REMOVING HYDROGEN SULFIDE FROM REFINED HYDROCARBON STREAMS - A method for reducing the amount of hydrogen sulfide present in refined hydrocarbon streams and reducing the amount of corrosion in processing equipment contacting the refined hydrocarbon stream. The method includes adding a corrosion inhibitor to the refined hydrocarbon stream in contact with the processing equipment to protect the processing equipment and adding glyoxal to the refined hydrocarbon stream in contact with the protected processing equipment. The corrosion inhibitor includes an organic soluble compound having a nitrogen-containing ring. | 02-10-2011 |
20110042273 | Method for Reducing Coke Fouling in a Burner Tip - A method for reducing coke fouling in a burner tip when a waste gas stream containing unsaturated hydrocarbons is combusted by coating the interior of the burner tip and/or impregnating the body of the burner tip with a hydrocarbon hydrogenation promoting catalyst and/or a combustion catalyst. | 02-24-2011 |
20110247967 | DEPOSIT MITIGATION IN GASOLINE FRACTIONATION, QUENCH WATER SYSTEM AND PRODUCT RECOVERY SECTION - A method for selecting a solvent or mixture of solvents useful for mitigating deposit formation, cleaning existing deposits, and/or decreasing the rate of deposit formation is disclosed. Decreasing the rate at which deposits may form and/or increasing the rate at which deposits may be removed can dramatically improve process economics (e.g., decreasing down time as a result of deposit formation). In one aspect, embodiments disclosed herein relate to a process for dispersing foulants in a hydrocarbon stream, including the steps of: determining a nature of foulants in a hydrocarbon stream; selecting a solvent or a mixture of solvents suitable to disperse the foulants based upon the determined nature; and contacting the foulants with the selected solvent or mixture of solvents. | 10-13-2011 |
20120118794 | METHODS FOR MITIGATING FOULING OF PROCESS EQUIPMENT - Methods for determining the fouling propensity of a hydrocarbon stream and for reducing fouling are provided. In one method, the fouling propensity of a hydrocarbon stream is determined by obtaining a parameter indicative of the fouling propensity by a regression of a series of temperature measurements data for the hydrocarbon stream exiting a test unit. In another method, an effective minimal amount of an antifoulant is added to a hydrocarbon stream to reduce fouling, where the amount of the antifoulant is determined based on the fouling propensity of the hydrocarbon stream. | 05-17-2012 |
20130270157 | METHOD, APPARATUS AND CHEMICAL PRODUCTS FOR TREATING PETROLEUM EQUIPMENT - The present invention provides a method, an apparatus and chemical products for treating petroleum equipment wherein a fluid is flowing, preferably of the hydrocarbon type, and wherein treating is performed by establishing a closed or semi-closed flow circulation loop, during the normal production operations of the equipment. The treatment can refer to the cleaning of equipment, to yield improvement as compared to normal run conditions and/or to a reduction of coke formation and/or to coke removal on catalysts. | 10-17-2013 |
20100006478 | Process for the On-Stream Decoking of a Furnace for Cracking a Hydrocarbon Feed - A process for the on-stream decoking of a steam cracking furnace, the steam cracking furnace including multiple tube banks positioned between a hydrocarbon feedstock inlet and a convection section to radiant section crossover, each tube bank including a plurality of tubes arranged within the tube bank, the process comprising the steps of terminating the flow of hydrocarbon feed to a portion of the plurality of tubes of less than all of the multiple tube banks, and supplying a decoking feed comprising steam to the portion of the plurality of tubes of less than all of the multiple tube banks in sufficient amount to effect removal of coke accumulated on the interior of the radiant coils and quench system components fed by such tubes while maintaining a temperature at the convection section to radiant section crossover of below about 788° C. A furnace for the production of ethylene is also provided. | 01-14-2010 |
20140061100 | Process for Reducing the Asphaltene Yield and Recovering Waste Heat in a Pyrolysis Process by Quenching with a Hydroprocessed Product - The invention relates to upgraded pyrolysis products, processes for upgrading products obtained from hydrocarbon pyrolysis, equipment useful for such processes, and the use of upgraded pyrolysis products. | 03-06-2014 |
20160168479 | Process and Apparatus for Decoking A Hydocarbon Steam Cracking Furnace | 06-16-2016 |