Patent application number | Description | Published |
20080227630 | Layered Catalyst for Transalkylation of Heavy Alkylate - A layered catalyst is disclosed for use in transalkylation of polyalkylated benzenes. The catalyst comprises an inner core material with a molecular sieve bonded over the core, The process minimizes the cracking of the alkyl groups during the transalkylation reaction. | 09-18-2008 |
20080228018 | Transalkylation of Heavy Alkylate Using a Layered Catalyst - A layered catalyst is disclosed for use in transalkylation of polyalkylated benzenes. The catalyst comprises an inner core material with a molecular sieve bonded over the core. The process minimizes the cracking of the alkyl groups during the transalkylation reaction. | 09-18-2008 |
20090023967 | Processes and Apparatus for Making Detergent Range Alkylbenzenes Using Transalkylation - Dialkylbenzenes are transalkylated in the presence of benzene and solid catalyst. The transalkylation product is subjected to distillation to provide a lower-boiling, benzene-containing fraction which is fed to a transalkylation reactor as at least a portion of the benzene. Thus, high benzene to dialkylbenzene molar ratios can be economically maintained in order to enhance catalyst stability. | 01-22-2009 |
20090099399 | Layered Zeolitic Catalyst for Improved Linearity in Detergent Alkylation - A process is disclosed wherein a layered catalyst is used for the alkylation of benzene with a substantially linear olefin. The layered catalyst allows for shifting the operating conditions to increase the alkylation of benzene, while reducing the amount of isomerization of the alkyl group. This is important for increasing the quality of the alkylbenzene by increasing the linearity of the alkylbenzene. | 04-16-2009 |
20090292150 | Integrated Processes for Making Detergent Range Alkylbenzenes from C5-C6-Containing Feeds - Integrated processes for making detergent range alkylbenzenes from C | 11-26-2009 |
20090324465 | Reactor Design for Smaller Batch Transfers of Catalyst - A moving bed of catalyst loses activity as it moves through the reactor. Creating multiple passes for the process fluid moving across a catalyst bed, increases the utilization of the catalyst and creates a pseudo-counter current flow of catalyst and process fluid. The flow improves the temperature profile of the bed and allows higher temperature fluid contacting the less active catalyst. | 12-31-2009 |
20090326294 | Reactor Process for Smaller Batch Transfers of Catalyst - A moving bed of catalyst loses activity as it moves through the reactor. Creating multiple passes for the process fluid moving across a catalyst bed, increases the utilization of the catalyst and creates a step-wise counter current flow of catalyst and process fluid, where the catalyst flows in the axial direction of the reactor, and the process fluid flows radially, with step-wise axial direction flow when the flow is reversed to flow back across the catalyst bed. The flow improves the temperature profile of the bed and allows higher temperature fluid contacting the less active catalyst. | 12-31-2009 |
20100004496 | Integrated Processes for Making Detergent Range Alkylbenzenes from C5-C6-Containing Feeds - Integrated processes for making detergent range alkylbenzenes from C | 01-07-2010 |
20100004497 | Integrated Processes for Making Detergent Range Alkylbenzenes from C5-C6-Containing Feeds - Integrated processes for making detergent range alkylbenzenes from C | 01-07-2010 |
20100075833 | Processes for Producing Alkylbenzenes Over Solid Acid Catalyst at Low Benzene to Olefin Ratios and Low Heavies Make - The alkylation of aromatic compound with acyclic mono-olefin is effected at low aromatic compound to mono-olefin ratios with reduced co-production of heavies. In the processes a small crystal, acidic FAU molecular sieve is used as a catalyst under alkylation conditions. This invention also relates to catalysts containing small crystal, acidic FAU molecular sieve and at least one other acidic catalytic component. | 03-25-2010 |
20100152026 | Layered Sphere Catalysts with High Accessibility Indexes - A process and catalyst for use in the selective hydrogenation of acetylene to ethylene is presented. The catalyst comprises a layered structure, wherein the catalyst has an inner core and an outer layer of active material. The catalyst further includes a metal deposited on the outer layer, and the catalyst is formed such that the catalyst has an accessibility index between 3 and 500. | 06-17-2010 |
20100152507 | Process for Using Layered Sphere Catalysts with High Accessibility Indexes - A process and catalyst for use in the selective hydrogenation of acetylene to ethylene is presented. The catalyst comprises a layered structure, wherein the catalyst has an inner core and an outer layer of active material. The catalyst further includes a metal deposited on the outer layer, and the catalyst is formed such that the catalyst has an accessibility index between 3 and 500. | 06-17-2010 |
20100158770 | Process and Apparatus for Alkylation of Aromatic Compound with Aliphatic Mono-olefin Compound of 8 to 18 Carbon Atoms - Continuous processes for monoalkylating aromatic compound with an aliphatic feedstock comprising aliphatic olefin of 8 to 18 carbon atoms per molecule are effected using at least 3 reaction zones in series, each containing solid alkylation catalyst with effluent cooling between reaction zones, each of which reaction zones is supplied a portion of the fresh aliphatic feedstock, such that the Reaction Zone Delta T in each reaction zone is less than about 15° C. The overall aromatic compound to olefin molar ratio is less than about 20:1. The alkylation product has desirable linearity and low amounts of dimers, dealkylated compounds and diaryl compounds even though a low aromatic compound to olefin molar ratio is used. | 06-24-2010 |
20100240941 | New Catalyst for Higher Production Rates in Hydrocarbon Dehydrogenation - A process is presented for the dehydrogenation of hydrocarbons in a radial flow reactor. The process includes the continuous feeding of catalyst into the reactor and the continuous withdrawal of catalyst from the reactor, where the catalyst is modified to increase the increased density. The catalyst is a layered structure with a dense core and an active catalytic outer layer. | 09-23-2010 |
20100305379 | Transalkylation of Heavy Alkylate Using a Layered Catalyst - A layered catalyst is disclosed for use in transalkylation of polyalkylated benzenes. The catalyst comprises an inner core material with a molecular sieve bonded over the core. The process minimizes the cracking of the alkyl groups during the transalkylation reaction. | 12-02-2010 |
20110071020 | Selective Hydrogenation of Dienes in the Manufacture of MLAB - A process and catalyst are presented for the selective hydrogenation of branched diolefins and acetylenes to olefins. The process uses a catalyst having large pores, and a minimal amount of micropores. The catalyst is designed to have minimal diffusional resistance through the large pores, and to minimize the dehydrogenation of olefins to paraffins. | 03-24-2011 |
20110071328 | Selective Hydrogenation of Dienes in the Manufacture of MLAB - A process and catalyst are presented for the selective hydrogenation of branched diolefins and acetylenes to olefins. The process uses a catalyst having large pores, and a minimal amount of micropores. The catalyst is designed to have minimal diffusional resistance through the large pores, and to minimize the hydrogenation of olefins to paraffins. | 03-24-2011 |
20110118517 | Manufacturing Process for Branched and Linear Alkylated Benzene as Precursor for Enhanced Oil Recovery Surfactant - A process is presented for the preparation of surfactants that are useable in enhanced oil recovery. The surfactants are long chained sulfonated alkylaryl compounds. The process includes recovering linear and lightly branched paraffins from a hydrocarbon stream, dehydrogenating the paraffins, and then alkylating benzene with the olefins generated. The process uses pentasil zeolites to selectively separate the normal and lightly branched paraffins from the hydrocarbon stream. | 05-19-2011 |
20110143918 | Alkylation Catalysts with Low Olefin Skeletal Isomerization Activity - A catalyst is presented for use in the production of linear alkylbenzenes. The catalyst includes two zeolites combined to improve the quality of the linear alkylbenzenes. The catalyst includes a first zeolite that is UZM-8 and a second zeolite that is a low silica to alumina ratio zeolite. The second zeolite is also cation exchanged with a rare earth elements to provide a zeolite that increases the alkylation of benzene while reducing the amount of skeletal isomerization. | 06-16-2011 |
20110143920 | Rare Earth Exchanged Catalyst for Use in Detergent Alkylation - A catalyst is disclosed for use in the alkylation of benzene with a substantially linear olefin. The catalyst allows for cation exchange with a rare earth element to increase the alkylation of benzene, while reducing the amount of isomerization of the alkyl group. This is important for increasing the quality of the alkylbenzene by increasing the linearity of the alkylbenzene. | 06-16-2011 |
20110144402 | ALKYLATION PROCESS USING CATALYSTS WITH LOW OLEFIN SKELETAL ISOMERIZATION ACTIVITY - A process is presented for the production of linear alkylbenzenes. The process includes contacting an aromatic compound with an olefin in the presence of a selective zeolite catalyst. The catalyst includes two zeolites combined to improve the linearity, and to produce detergent grade LAB. The two zeolites are selected to limit skeletal isomerization while producing a desired 2-phenyl content for the LAB. | 06-16-2011 |
20110144403 | Detergent Alkylation Using a Rare Earth Exchanged Catalyst - A process is disclosed using a new catalyst for use in the alkylation of benzene with a substantially linear olefin. The catalyst allows for cation exchange with a rare earth element to increase the alkylation of benzene, while reducing the amount of isomerization of the alkyl group. This is important for increasing the quality of the alkylbenzene by increasing the linearity of the alkylbenzene. | 06-16-2011 |
20110207981 | ALKYLATION PROCESS USING CATALYSTS WITH LOW OLEFIN SKELETAL ISOMERIZATION ACTIVITY - A process is presented for the production of linear alkylbenzenes. The process includes contacting an aromatic compound with an olefin in the presence of a selective zeolite catalyst. The catalyst includes two zeolites combined to improve the linearity, and to produce detergent grade LAB. The two zeolites are selected to limit skeletal isomerization while producing a desired 2-phenyl content for the LAB. | 08-25-2011 |
20110230693 | TRACE-SULFUR REMOVAL FROM HYDROCARBON STREAMS - A process for removing trace-sulfur compounds, particularly thiophene, from aromatic hydrocarbon streams is disclosed and claimed. The process involves contacting the stream with a catalyst/adsorbent comprising a solid acid and a metal component. The process yields a sulfur-free aromatic feedstock suitable for further processing by, e.g., alkylation. | 09-22-2011 |
20120065444 | Method for Controlling 2-Phenyl Isomer Content of Linear Alkylbenzene and Catalyst Used in the Method - A method for controlling 2-isomer content in linear alkylbenzene obtained by alkylating benzene with olefins and catalyst used in the method. | 03-15-2012 |
20120108872 | HEAVY ALKYLBENZENE TRANSALKYLATION OPERATING COST REDUCTION - A process for increasing the production of monoalkylbenzenes is presented. The process includes utilizing a transalkylation process to convert dialkylbenzenes to monoalkylbenzenes. The transalkylation process recycles a portion of the effluent stream from the transalkylation reactor back to the feed of the transalkylation reactor. The recycled dialkylbenzenes and a portion of the recycled benzene are converted to monoalkylbenzenes. | 05-03-2012 |
20120149959 | Method to Adjust 2-Phenyl Content of an Alkylation Process for the Production of Linear Alkyl Benzene - A process is presented for controlling the output of monoalkylated benzenes. The alkylbenzenes are linear alkylbenzenes and the process controls the 2-phenyl content of the product stream. The control of the process to generate a linear alkylbenzene with a 2-phenyl content within a desired range by recycling a portion of the effluent from the alkylation reactor to the inlet of the reactor. | 06-14-2012 |
20120322650 | LAYERED CATALYST - One exemplary embodiment can be a layered catalyst for use in a selective hydrogenation of acetylenes and diolefins to olefins. The layered catalyst may include an inner core having an inert material, an outer layer including a metal oxide bonded to the inner core, and a metal deposited on the outer layer. Generally, the metal is an IUPAC Group 8-10 metal and the layered catalyst has an accessibility index of about 3- about 500. | 12-20-2012 |
20120323058 | PROCESS FOR USING LAYERED SPHERE CATALYST - One exemplary embodiment can be a process for selective hydrogenation of acetylenes and diolefins to olefins. The process can include contacting a feedstream having olefins, acetylenes and diolefins with a layered catalyst at reaction conditions. Thus, the process may include creating an output stream with a reduced amount of acetylenes and diolefins. Generally, the layered catalyst has an inner core including an inert material, an outer layer, including a metal oxide, bonded to the inner core, and a metal, which is an International Union of Pure and Applied Chemistry Group 8-10 metal, deposited on the outer layer. Usually, the layered catalyst has an accessibility index of about 3—about 500, a void space index about 0—about 1, or both an accessibility index of about 3—about 500 and a void space index of about 0—about 1. | 12-20-2012 |
20130096357 | HEAVY ALKYLBENZENE TRANSALKYLATION OPERATING COST REDUCTION - A process for increasing the production of monoalkylbenzenes is presented. The process includes utilizing a transalkylation process to convert dialkylbenzenes to monoalkylbenzenes. The transalkylation process recycles a portion of the effluent stream from the transalkylation reactor back to the feed of the transalkylation reactor. The recycled dialkylbenzenes and a portion of the recycled benzene are converted to monoalkylbenzenes. | 04-18-2013 |
20130172646 | Method to Adjust 2-Phenyl Content of an Alkylation Process for the Production of Linear Alkyl Benzene - A process is presented for controlling the output of monoalkylated benzenes. The alkylbenzenes are linear alkylbenzenes and the process controls the 2-phenyl content of the product stream. The control of the process to generate a linear alkylbenzene with a 2-phenyl content within a desired range by recycling a portion of the effluent from the alkylation reactor to the inlet of the reactor. | 07-04-2013 |
20130178678 | METHOD FOR CONTROLLING 2-PHENYL ISOMER CONTENT OF LINEAR ALKYLBENZENE AND CATALYST USED IN THE METHOD - A method for controlling 2-isomer content in linear alkylbenzene obtained by alkylating benzene with olefins and catalyst used in the method. | 07-11-2013 |
20130253219 | Production of Alkane Sulfonates - A process for the production of olefin sulfonates is presented. The process comprising generating olefins from normal alkanes through a dehydrogenation unit to produce a mixture of alkanes and alkenes. The mixture is sulfonated to react the olefins and generate olefin sulfonates. The olefin sulfonates are separated from the normal alkanes to produce a product stream, with the normal alkanes recycled to the dehydrogenation unit. | 09-26-2013 |
20130323133 | Methods and Apparatus for Treating a Hydrocarbon Stream - Disclosed is an apparatus for treating two or more hydrocarbon feed streams. The apparatus according to one aspect includes a first feed line for supplying one aromatic feed stream and a second feed line for supplying another aromatic feed stream. The apparatus includes a juncture between the feed lines for combining the feed streams. The apparatus further includes a treatment zone in communication with the juncture for treating the combined feed stream. | 12-05-2013 |
20130323134 | Methods and Apparatus for Treating a Hydrocarbon Stream - Disclosed is an apparatus for removing water, nitrogen compounds, and unsaturated aliphatic compounds from a hydrocarbon feed stream including a water removal zone, a nitrogen removal zone, and an unsaturated aliphatic compound removal zone. By on aspect, the water removal zone includes a water selective adsorbent, the nitrogen removal zone includes a nitrogen selective adsorbent, and the unsaturated aliphatic compound removal zone includes an unsaturated aliphatic compound removal material. | 12-05-2013 |
20130324773 | Methods and Apparatus for Treating a Hydrocarbon Stream - Disclosed is a method for treating two or more aromatic feed streams including combining one aromatic feed stream with another aromatic feed stream. The method further includes passing the combined feed stream to a unsaturated aliphatic compound removal zone for removing an unsaturated aliphatic compound therefrom. The method further includes passing the combined aromatic feed stream to a nitrogen removal zone for removing a nitrogen compound therefrom. | 12-05-2013 |
20130324774 | Methods and Apparatus for Treating a Hydrocarbon Stream - Disclosed is a method for removing water, nitrogen compounds, and unsaturated aliphatic compounds from a hydrocarbon feed stream by passing the hydrocarbon feed stream through a water removal zone, a nitrogen removal zone, and an unsaturated aliphatic compound removal zone. By on aspect, the method includes removing water from the hydrocarbon feed stream, contacting the feed stream with a nitrogen selective adsorbent, and contacting the feed stream with an unsaturated aliphatic compound removal material. | 12-05-2013 |
20130338416 | METHODS FOR REMOVING WEAKLY BASIC NITROGEN COMPOUNDS FROM A HYDROCARBON STREAM USING ACIDIC CLAY - Disclosed is a method for removing weakly basic nitrogen compounds from a hydrocarbon feed stream by contacting the hydrocarbon feed stream with acidic clay to produce a hydrocarbon effluent stream having a lower weakly basic nitrogen compound content relative to the hydrocarbon feed stream. The hydrocarbon feed stream comprises an aromatic compound and a weakly basic nitrogen compound. | 12-19-2013 |
20130338417 | Methods for Removing Weakly Basic Nitrogen Compounds from a Hydrocarbon Stream Using Basic Molecular Sieves - Disclosed is a method for removing weakly basic nitrogen compounds from a hydrocarbon feed stream by contacting the hydrocarbon feed stream with a basic catalyst to convert a portion of the weakly basic nitrogen compounds to basic nitrogen compounds. The method also includes contacting the hydrocarbon feed stream with an acidic adsorbent to adsorb the basic nitrogen compounds from the stream. The hydrocarbon feed stream comprises an aromatic compound and a weakly basic nitrogen compound. | 12-19-2013 |
20140038810 | METHOD FOR CONTROLLING 2-PHENYL ISOMER CONTENT OF LINEAR ALKYLBENZENE AND CATALYST USED IN THE METHOD - A method for controlling 2-isomer content in linear alkylbenzene obtained by alkylating benzene with olefins and catalyst used in the method. | 02-06-2014 |
20140046108 | METHOD FOR CONTROLLING 2-PHENYL ISOMER CONTENT OF LINEAR ALKYLBENZENE AND CATALYST USED IN THE METHOD - A method for controlling 2-isomer content in linear alkylbenzene obtained by alkylating benzene with olefins and catalyst used in the method. | 02-13-2014 |