Class / Patent application number | Description | Number of patent applications / Date published |
585435000 | Having alkenyl moiety, e.g., styrene, etc. | 89 |
20090137855 | Alkylaromatics Production - A process is described for producing an alkylaromatic compound in a multistage reaction system comprising at least first and second series-connected alkylation reaction zones each containing an alkylation catalyst. A first feed comprising an alkylatable aromatic compound and a second feed comprising an alkene and one or more alkanes are introduced into said first alkylation reaction zone. The operating conditions, e.g. temperature and pressure, of the first alkylation reaction zone are controlled effective to cause the alkylatable aromatic compound to be partly in the vapor phase and partly in the liquid phase, and the ratio of the volume of liquid to the volume of vapor of the feed in each zone to be from about 0.1 to about 10. The aromatic compound and the alkene of the feed are reacted in the presence of the alkylation catalyst to form an effluent comprising the alkylaromatic compound, unreacted alkylatable aromatic compound, any unreacted alkene and the alkane. The effluent is withdrawn from the first alkylation reaction zone and then supplied to the second alkylation reaction zone without removal of the alkane. | 05-28-2009 |
20090156872 | METHOD FOR PHOTOCATALYTIC ISOMERIZATION OF 1,2-DIPHENYLETHYLENE ANALOGUES - The present invention relates to methods for accelerating the trans-cis isomerization of 1,2-diphenylethylene analogues by using photocatalyst. According to this invention, in the presence of polypyridyl platinum(II) complex with catalytic dosage, a solution containing trans-1,2-diphenylethylene analogues or mixture of cis- and trans-1,2-diphenylethylene analogues is irradiated by visible light to prepare product of cis-1,2-diphenylethylene analogues or product predominantly being cis-1,2-diphenylethylene analogues under inert gas atmosphere. This method has the advantages of fast reaction, high performance, easy separation of reaction system and recycle of the polypyridyl platinum (II) complexes. | 06-18-2009 |
20090306445 | Method for Extracting Pure Styrene From a Pyrolysis Benzine Fraction - The invention relates to a method for extracting styrene, having a polymerisation quality, from pyrolysis benzol fractions containing styrene by means of extractive distillation. The pyrolysis benzol fraction is separated in a separating wall column in a C | 12-10-2009 |
20100249476 | CATALYTIC DEHYDRATION OF ALCOHOLS USING PHASE PURE SINGLE- AND MULTI-SITE HETEROGENEOUS CATALYSTS - The disclosure describes a new class of isomorphously metal-substituted aluminophosphate materials with high phase purity that are capable of performing selective Brönsted acid catalyzed chemical transformations, such as transforming alcohols to olefins, with high conversions and selectivities using mild conditions. Isomorphous substitutions of functional metal ions for both the aluminum ions and the phosphorous ions were successful in various AlPO structures, along with multiple metal substitutions into a single aluminum site and/or a phosphorous site. This invention can be used towards the catalytic conversion of hydroxylated compounds of linear and/or branched moiety with the possibility of being substituted to their respective hydrocarbon products, preferably light olefins containing 2 to 10 carbon atoms, among other chemistries. | 09-30-2010 |
20110112348 | PROCESS FOR MAKING STYRENE USING MIRCOHANNEL PROCESS TECHNOLOGY - The disclosed invention relates to a process for converting ethylbenzene to styrene, comprising: flowing a feed composition comprising ethylbenzene in at least one process microchannel in contact with at least one catalyst to dehydrogenate the ethylbenzene and form a product comprising styrene; exchanging heat between the process microchannel and at least one heat exchange channel in thermal contact with the process microchannel; and removing product from the process microchannel. Also disclosed is an apparatus comprising a process microchannel, a heat exchange channel, and a heat transfer wall positioned between the process microchannel and heat exchange channel wherein the heat transfer wall comprises a thermal resistance layer. | 05-12-2011 |
20110118521 | Preparation Of Molecular Sieve Catalysts And Their Use In The Production Of Alkylaromatic Hydrocarbons - A method is described for preparing a molecular sieve-containing catalyst for use in a catalytic process conducted in a stirred tank reactor. The method comprises providing a mixture comprising a molecular sieve crystal and forming the mixture into catalyst particles having an average cross-sectional dimension of between about 0.01 mm and about 3.0 mm. The mixture may include a binder and the catalyst particles are then calcined to remove water therefrom and, after calcination and prior to loading the catalyst particles into a reactor for conducting the catalytic process, the catalyst particles are coated with a paraffin inert to the conditions employed in the catalytic process. | 05-19-2011 |
20110257453 | Reactors and Processes for the Oxidative Coupling of Hydrocarbons - A method for the oxidative coupling of hydrocarbons includes providing an oxidative catalyst inside a reactor and carrying out the oxidative coupling reaction under a set of reaction conditions. The reactor surfaces that contact the reactants and products do not provide a significant detrimental catalyzing effect. In an embodiment the reactor contains an inert lining or a portion of the reactor inner surface is treated to reduce the detrimental catalytic effects. In an embodiment the reactor contains a lining that includes an oxidative catalyst. | 10-20-2011 |
20120157736 | METHODS FOR REMOVING UNSATURATED ALIPHATIC HYDROCARBONS FROM A HYDROCARBON STREAM USING CLAY - Disclosed is a method for removing unsaturated aliphatic compounds from a hydrocarbon feed stream by contacting the hydrocarbon feed stream with an adsorbent comprising clay to produce a hydrocarbon effluent stream having a lower unsaturated aliphatic content relative to the hydrocarbon feed stream. The hydrocarbon feed stream comprises an aromatic compound, a nitrogen compound, and an unsaturated aliphatic compound. | 06-21-2012 |
20120178980 | Method of Making and Using a Hydrocarbon Conversion Catalyst - Methods for making and using a catalytic composition useful in the hydrocarbon conversion reactions. The catalytic composition is made from an alumina sol that is prepared by dispersing a hydrated alumina in an aqueous medium. The alumina sol is mixed with a boron-containing molecular sieve. Catalytic compositions prepared in this manner avoid the disadvantages of preparing alumina sols via the Heard process. | 07-12-2012 |
20150119618 | ALKYLATING PROCESS FOR ALKYL BENZENES - This invention relates to an alkylating process for alkyl benzenes, including the steps of: a) an alkyl benzene and a first stream of alkylating agent being fed into a first reaction zone, contacting with a catalyst A, to produce a process stream I; b) the process stream I and a second stream of alkylating agent being fed into at least one second reaction zone, contacting with a catalyst B, to produce a process stream II; and c) the process stream II being fed into at least one third reaction zone, contacting with a catalyst C, to produce a process stream III containing an alkylate. The present alkylating process can improve the utilization efficiency of the alkylating agent. | 04-30-2015 |
20160031770 | REACTOR WITH BAFFLE CONFIGURATION - A reactor includes a shell defining an interior, a plurality of baffles positioned in the interior of the reactor, and a fluid pathway defined between the plurality of baffles and extending between an inlet and an outlet. In some embodiments, the reactor has a degree of mixing of less than 0.2. | 02-04-2016 |
585436000 | Polycyclic product or from nonhydrocarbon feed | 17 |
585437000 | O-containing feed | 17 |
20090187055 | PROCESS FOR THE PREPARATION OF STYRENE AND/OR A SUBSTITUTED STYRENE - The invention relates to a process for the preparation of styrene and/or a substituted styrene from a feed containing 1-phenylethanol and 2-phenylethanol and/or a substituted 1-phenylethanol and a substituted 2-phenylethanol, comprising a gas phase dehydration of the feed at elevated temperature in the presence of a catalyst comprising particles of alumina having a multimodal pore size distribution. | 07-23-2009 |
20100240939 | Dehydration of 1- Phenyl Ethanol - A process for the production of styrene is described. The process comprises dehydrating 1-phenyl ethanol in the liquid phase in the presence of a para- and ortho-toluenesulfonic acid mixture. The ratio of para-toluenesulfonic acid to ortho-toluenesulfonic acid is from 1:9 to 20:1. The process results in reduced heavies production, improved 1-phenyl ethanol conversion and selectivity, less reactor tube fouling, and lower corrosion rates. | 09-23-2010 |
20120296134 | GERMANIUM MODIFIED CATALYST FOR COUPLING REACTIONS - A germanium modified catalyst is disclosed that can be prepared by providing a germanium source and a substrate including silica; contacting the substrate with the germanium source; and obtaining a catalyst including germanium. The contacting of the substrate with the germanium source results in the substitution of at least a portion of the silica with germanium to increase the basicity of the catalyst. The catalyst can be used in a process for making styrene that includes reacting toluene with a C | 11-22-2012 |
20120296135 | NITROGEN CONTAINING CATALYST FOR COUPLING REACTIONS - A process for making styrene including providing a C | 11-22-2012 |
20120296136 | PROCESS FOR ALKYLATION OF TOLUENE TO FORM STYRENE AND ETHYLBENZENE - A process is disclosed for making styrene and/or ethylbenzene by reacting toluene with a C | 11-22-2012 |
20120296137 | USE OF A CO-FEED IN THE COUPLING OF TOLUENE WITH A CARBON SOURCE - A process for making styrene is disclosed that includes providing toluene, a co-feed, and a C | 11-22-2012 |
20120296138 | METHOD FOR ALKYLATION OF TOLUENE TO FORM STYRENE AND ETHYLBENZENE UTILIZING A MOVING BED REACTOR - A method is disclosed for making styrene and/or ethylbenzene by reacting toluene with a C | 11-22-2012 |
20120296139 | METHOD FOR PROVIDING A CO-FEED IN THE COUPLING OF TOLUENE WITH A CARBON SOURCE - A process for making styrene is disclosed that includes reacting toluene with a C | 11-22-2012 |
20120296140 | METAL OXIDE CONTAINING CATALYST FOR SIDE CHAIN ALKYLATION REACTIONS - A catalyst containing a zeolite component and a metal oxide component, wherein the metal oxide component is ion-exchanged with the zeolite component resulting in an ion-modified zeolite, and wherein, under reaction conditions, the metal oxide component transforms into other oxide structures. | 11-22-2012 |
20120296141 | ADDITION OF A BASE TO ENHANCE PRODUCT YIELD IN ALKYLATION REACTIONS - A process for making styrene including providing toluene, a co-feed, and a C | 11-22-2012 |
20120296142 | ADDITION OF BASIC NITROGEN TO ALKYLATION REACTIONS - A process for making styrene including providing toluene, a co-feed, and a C | 11-22-2012 |
20130237735 | ZEOLITE CATALYST FOR THE ALKYLATION OF TOLUENE WITH METHANOL - The zeolite catalyst is provided for the alkylation of toluene with methanol to selectively produce styrene and ethylbenzene. The zeolite catalyst is an X-type zeolite modified sequentially, first by ion-exchange with alkali metals, such as cesium, to replace all exchangeable sodium from the zeolite, and then by mixing the modified zeolite with borate salts of a metal such as lanthanum, zirconium, copper, zinc or the like. The initial zeolite composition has a Si to Al molar ratio of approximately 1 to 10, and is preferably either zeolite X or zeolite 13X. The zeolite composition is ion-exchanged with cesium to replace at least 50% of the exchangeable sodium in the zeolite composition. The ion-exchanged zeolite composition is then mixed with a borate salt to form the zeolite catalyst for the alkylation of toluene with methanol for the selective production of styrene and ethylbenzene. | 09-12-2013 |
20130237736 | METHOD FOR PRODUCING ALPHA-METHYL STYRENE FROM CUMENE - A method for controlling the production of heavy compounds in the production of alpha-methyl styrene is provided. In one embodiment, the method includes providing a first composition to a distillation column, said first composition comprising acetone, phenol, cumene and alpha-methyl styrene; refining the first composition in the distillation column to produce a second composition comprising at least 1 wt. % alpha-methyl styrene and at least one organic acid, wherein the second composition includes a higher weight percentage of alpha-methyl styrene than the first composition; and adding an amine to the second composition. | 09-12-2013 |
20140107384 | Method for Providing a Co-Feed in the Coupling of Toluene with a Carbon Source - A process for making styrene is disclosed that includes reacting toluene with a C | 04-17-2014 |
20140257004 | USE OF A CO-FEED IN THE COUPLING OF TOLUENE WITH A CARBON SOURCE - A process for making styrene is disclosed that includes providing toluene, a co-feed, and a C | 09-11-2014 |
20140288341 | CATALYSTS CONTAINING NANO-MATERIALS AND METHODS OF MAKING AND USING SAME - A method of making a catalyst containing nanosize zeolite particles supported on a support material is disclosed. A process for making styrene or ethylbenzene by reacting toluene with a C | 09-25-2014 |
20150105597 | PROCESS FOR THE AROMATIZATION OF A METHANE-CONTAINING GAS STREAM - A process is disclosed for making styrene and/or ethylbenzene by reacting toluene with a C | 04-16-2015 |
585438000 | By condensation using metal-containing catalyst | 16 |
20080262278 | Integrated Process for Producing Xylenes and High Purity Benzene - Processes and apparatus are provided that provide high yields of xylenes per unit of aromatic-containing feed while enabling a high purity benzene co-product to be obtained without the need for an extraction or distillation to remove C | 10-23-2008 |
20080262279 | Production of Alkylaromatic Compounds - A process for producing a monoalkylation aromatic product, such as ethylbenzene and cumene, utilizing an alkylation reactor zone and a transalkylation zone in series or a combined alkylation and transalkylation reactor zone. This process requires significantly less total aromatics distillation and recycle as compared to the prior art. | 10-23-2008 |
20090036721 | Dehydrogenation of ethylbenzene and ethane using mixed metal oxide or sulfated zirconia catalysts to produce styrene - Methods are described for the simultaneous dehydrogenation of ethylbenzene and ethane in the presence of oxygen or carbon dioxide via a mixed metal oxide (MMO) catalyst or lithium-promoted sulfated zirconia catalyst to prepare styrene monomer from benzene and ethane. An alkylation unit produces ethyl benzene from ethylene and benzene, and an oxydehydrogenation unit produces styrene and ethylene from ethane, ethylbenzene and an oxidizing agent such as oxygen or carbon dioxide. The ethylene produced in the oxydehydrogenation unit is separated and used as feed to the alkylation unit. | 02-05-2009 |
20100041931 | Method for Production of Styrene from Toluene Syngas - A method for the production of styrene comprising reacting toluene and syngas in one or more reactors is disclosed. | 02-18-2010 |
20100331593 | Process for the Oxidative Coupling of Hydrocarbons - A method for the oxidative coupling of hydrocarbons, such as the oxidative coupling of methane to toluene, includes providing an oxidative catalyst inside a reactor, and carrying out the oxidative coupling reaction under a set of reaction conditions. The oxidative catalyst includes (A) at least one element selected from the group consisting of the Lanthanoid group, Mg, Ca, and the elements of Group 4 of the periodic table (Ti, Zr, and Hf); (B) at least one element selected from the group consisting of the Group 1 elements of Li, Na, K, Rb, Cs, and the elements of Group 3 (including La and Ac) and Groups 5-15 of the periodic table; (C) at least one element selected from the group consisting of the Group 1 elements of Li, Na, K, Rb, Cs, and the elements Ca, Sr, and Ba; and (D) oxygen. | 12-30-2010 |
20110118522 | OLEFIN FEED PURIFICATION PROCESS - A light olefin feed for an olefin conversion process is subjected to a water wash to remove water-soluble contaminants after which the water is separated from the olefin prior to the conversion reaction. The water used for the wash is free of boiler feedwater additives, especially basic nitrogenous additives, which adversely affect catalytic function. | 05-19-2011 |
20110196182 | STYRENE PRODUCTION PROCESSES AND CATALYSTS FOR USE THEREIN - Styrene production processes and catalysts for use therein are described herein. The process generally includes providing a C | 08-11-2011 |
20110207980 | Method for Production of Styrene from Toluene and Syngas - A method for the production of styrene comprising reacting toluene and syngas in one or more reactors is disclosed. | 08-25-2011 |
20110257454 | Use of an Additive in the Coupling of Toluene with a Carbon Source - A method is disclosed of preparing a catalyst including providing a substrate and a first solution containing at least one promoter, contacting the substrate with the solution to obtain a catalyst containing at least one promoter, wherein the contacting of the substrate with the solution subjects the substrate to the addition of at least one promoter. | 10-20-2011 |
20110270006 | Use of an Additive in the Coupling of Toluene with a Carbon Source - A method is disclosed of preparing a catalyst, including contacting a substrate with at least one solution including a first promoter being Cs and at least one solution including a second promoter. The contact subjects the substrate to the addition of the first and second promoters, thereby forming the catalyst comprising the first and second promoters. In the method disclosed, the second promoter is capable of undergoing a redox reaction. | 11-03-2011 |
20110319687 | Method for Production of Styrene from Toluene and Syngas - A method for the production of styrene comprising reacting toluene and syngas in one or more reactors is disclosed. | 12-29-2011 |
20120004483 | AROMATIC ALKYLATION PROCESS USING UZM-5, UZM-5P AND UZM-6 ZEOLITES - A process for alkylating aromatic compounds using a family of zeolites, examples of which have been designated UZM-5, UZM-5P and UZM-6, and are represented by the empirical formula: | 01-05-2012 |
20120142987 | AROMATIC ALKYLATION PROCESS USING UZM-5, UZM-5P AND UZM-6 ZEOLITES - A process for alkylating aromatic compounds using a family of zeolites, examples of which have been designated UZM-5, UZM-5P and UZM-6, and are represented by the empirical formula: | 06-07-2012 |
20130231513 | Process for the Oxidative Coupling of Hydrocarbons - A method for the oxidative coupling of hydrocarbons, such as the oxidative coupling of methane to toluene, includes providing an oxidative catalyst inside a reactor, and carrying out the oxidative coupling reaction under a set of reaction conditions. The oxidative catalyst includes (A) at least one element selected from the group consisting of the Lanthanoid group, Mg, Ca, and the elements of Group 4 of the periodic table (Ti, Zr, and Hf); (B) at least one element selected from the group consisting of the Group 1 elements of Li, Na, K, Rb, Cs, and the elements of Group 3 (including La and Ac) and Groups 5-15 of the periodic table; (C) at least one element selected from the group consisting of the Group 1 elements of Li, Na, K, Rb, Cs, and the elements Ca, Sr, and Ba; and (D) oxygen. | 09-05-2013 |
20140066677 | Process for the Oxidative Coupling of Hydrocarbons - A method for the oxidative coupling of hydrocarbons, such as the oxidative coupling of methane to toluene, includes providing an oxidative catalyst inside a reactor, and carrying out the oxidative coupling reaction under a set of reaction conditions. The oxidative catalyst includes (A) at least one element selected from the group consisting of the Lanthanoid group, Mg, Ca, and the elements of Group 4 of the periodic table (Ti, Zr, and Hf); (B) at least one element selected from the group consisting of the Group 1 elements of Li, Na, K, Rb, Cs, and the elements of Group 3 (including La and Ac) and Groups 5-15 of the periodic table; (C) at least one element selected from the group consisting of the Group 1 elements of Li, Na, K, Rb, Cs, and the elements Ca, Sr, and Ba; and (D) oxygen. | 03-06-2014 |
20140257005 | Process for the Oxidative Coupling of Hydrocarbons - A method for the oxidative coupling of hydrocarbons, such as the oxidative coupling of methane to toluene, includes providing an oxidative catalyst inside a reactor, and carrying out the oxidative coupling reaction under a set of reaction conditions. The oxidative catalyst includes (A) at least one element selected from the group consisting of the Lanthanoid group, Mg, Ca, and the elements of Group 4 of the periodic table (Ti, Zr, and Hf); (B) at least one element selected from the group consisting of the Group 1 elements of Li, Na, K, Rb, Cs, and the elements of Group 3 (including La and Ac) and Groups 5-15 of the periodic table; (C) at least one element selected from the group consisting of the Group 1 elements of Li, Na, K, Rb, Cs, and the elements Ca, Sr, and Ba; and (D) oxygen. | 09-11-2014 |
585440000 | By dehydrogenation | 45 |
20090054715 | Method and Apparatus for Addition of Aqueous Solutions to High Temperature Processes - Methods and systems for extending the life of a dehydrogenation catalyst are described herein. For example, one embodiment includes providing a reaction vessel loaded with a dehydrogenation catalyst with a feedstream via a conduit in operable communication with the reaction vessel. The feedstream may include an alkyl aromatic hydrocarbon and the dehydrogenation catalyst may be adapted to convert the alkyl aromatic hydrocarbon to a vinyl aromatic hydrocarbon. The feedstream may be contacted with an aqueous catalyst life extender, wherein the aqueous catalyst life extender enters the conduit at a linear velocity sufficient to prevent vaporization of the catalyst life extender in the conduit prior to contact with the feedstream. | 02-26-2009 |
20090062584 | PROCESS FOR THE PREPARATION OF STYRENE - The invention relates to a process for the preparation of styrene comprising the gas phase dehydration of 1-phenylethanol at elevated temperature in the presence of a dehydration catalyst in which the dehydration catalyst is a shaped alumina catalyst particles having a surface area (BET) of from 80 to 140 m | 03-05-2009 |
20090118557 | Dehydrogenation of alkyl aromatics - Dehydrogenation of a reactor system of one or more vertically oriented flow reactors equipped with a system for introducing a catalyst extender into the inlet of the reactor. A vertically oriented radial flow reactor comprises inner and outer reactor tubes having perforated wall members extending longitudily of the reactor and defining an annulus containing a dehydrogenation catalyst. A supply line to the reactor is equipped with a rotation vane. An injection nozzle comprising a coaxial flow tube extends into the supply line downstream of the vane. The coaxial flow tube has an interior chamber and an annular chamber surrounding the interior chamber and extending into the supply line along with the interior chamber. The interior chamber is connected to a catalyst extender source and the annular chamber is connected to a source of a carrier gas which is effective to disperse the extender within feedstock flowing into the reactor. | 05-07-2009 |
20090192340 | ALKYLAROMATIC DEHYDROGENATION SYSTEM AND METHOD FOR MONITORING AND CONTROLLING THE SYSTEM - An alkylaromatic dehydrogenation system is described. In addition, a method is described for monitoring an alkylaromatic dehydrogenation process comprising: drawing a sample from the process at a first sample point; passing the sample through an analyzer; and measuring the amount of at least one component present in the sample wherein the sample is at least partially uncondensed. An apparatus is also described for monitoring an ethylbenzene dehydrogenation process comprising a plurality of sample lines that are heat-traced sufficiently to inhibit condensation in the sample lines; and a Fourier Transform Infrared Spectrometer comprising two sample cells wherein the ratio of the length of a first sample cell to the length of the second sample cell is from about 1:1000 to about 1:1. | 07-30-2009 |
20090264692 | Use of Direct Heating Device with a Reheater in a Dehydrogenation Unit - Methods and processes for increasing the efficiency and/or expanding the capacity of a dehydrogenation unit by use of at least one direct heating unit are described. | 10-22-2009 |
20090312589 | Styrene Monomer Process Based on Oxidative Dehydrogenation of Ethylbenzene Using CO2 as a Soft Oxidant - Processes are provided for the production of styrene monomer by oxidative dehydrogenation of EB using CO | 12-17-2009 |
20090312590 | Process for the Production of Styrene Monomer by Improving Energy Efficiency and Injecting a Recycle Gas into the EB Vaporizer - This invention relates to a process for the production of styrene monomer by the dehydrogenation or oxidative dehydrogenation of ethylbenzene in the presence of recycle gas and more particularly to a method of reducing the boiling point of liquid ethylbenzene feed in the production of styrene monomer. The process comprises the step of catalytically dehydrogenating or oxydehydrogenating ethylbenzene in the presence of a mixture, wherein the mixture substantially comprises carbon dioxide, thereby catalytically producing styrene monomer. | 12-17-2009 |
20090318741 | METHOD OF IMPROVING A DEHYDROGENATION PROCESS - The invention relates to a method of improving a dehydrogenation process comprising: removing a volume of a first dehydrogenation catalyst from a radial dehydrogenation reactor; loading the reactor with a volume of a second dehydrogenation catalyst that has a lower decline rate than the first dehydrogenation catalyst; and passing a dehydrogenatable hydrocarbon through the reactor wherein the volume of the second catalyst is at most 90% of the volume of the removed catalyst. | 12-24-2009 |
20110071330 | Offgas Stream Direct Contact Condenser - Methods and systems for the dehydrogenation of hydrocarbons include a direct contact condenser to remove compounds from an offgas process stream. The reduction of compounds can decrease duty on the offgas compressor by removing steam and aromatics from the offgas. The dehydrogenation reaction system can be applicable for reactions such as the dehydrogenation of ethylbenzene to produce styrene, the dehydrogenation of isoamiline to produce isoprene, or the dehydrogenation of n-pentene to produce piperylene. | 03-24-2011 |
20110144400 | HIGHLY POROUS FOAM CERAMICS AS CATALYST CARRIERS FOR THE DEHYDROGENATION OF ALKANES - The invention relates to a material which is suited as a carrier for catalysts in the dehydrogenation of alkanes and in the oxidative dehydrogenation of alkanes and which is made of an oxide ceramic foam and may contain combinations of the substances aluminium oxide, calcium oxide, silicon dioxide, tin oxide, zirconium dioxide, calcium aluminate, zinc aluminate, silicon carbide, and which is impregnated with one or several suitable catalytically active materials, by which the flow resistance of the catalyst decreases to a considerable degree and the accessibility of the catalytically active material improves significantly and the thermal and mechanical stability of the material increases. The invention also relates to a process for the manufacture of the material and a process for the dehydrogenation of alkanes by using the material according to the invention. | 06-16-2011 |
20110178350 | Dehydrogenation Catalyst of Alkylaromatic Compounds Having High Redox Ability, Process for Producing Same, And Dehydrogenation Method Using Same - The object of the present invention is to provide the catalyst used in a process for preparation of alkenylaromatic compounds by dehydrogenating alkyl aromatic compounds by means of steam as a diluent, wherein the catalyst prevents the block and corrosion caused by the alkali metal component migrated from the catalyst, and the process for producing same, and the dehydrogenation method using it. | 07-21-2011 |
20110245561 | Dehydrogenation of Alkyl Aromatics - Dehydrogenation of a reactor system of one or more vertically oriented flow reactors equipped with a system for introducing a catalyst extender into the inlet of the reactor. A vertically oriented radial flow reactor comprises inner and outer reactor tubes having perforated wall members extending longitudily of the reactor and defining an annulus containing a dehydrogenation catalyst. A supply line to the reactor is equipped with a rotation vane. An injection nozzle comprising a coaxial flow tube extends into the supply line downstream of the vane. The coaxial flow tube has an interior chamber and an annular chamber surrounding the interior chamber and extending into the supply line along with the interior chamber. The interior chamber is connected to a catalyst extender source and the annular chamber is connected to a source of a carrier gas which is effective to disperse the extender within feedstock flowing into the reactor. | 10-06-2011 |
20120157737 | REACTOR FOR CARRYING OUT AN AUTOTHERMAL GAS-PHASE DEHYDROGENATION - A reactor includes an essentially horizontal cylinder for carrying out an autothermal gas-phase dehydrogenation of a hydrocarbon-comprising gas stream using an oxygen-comprising gas stream to give a reaction gas mixture over a heterogeneous catalyst configured as monolith. The interior of the reactor is divided by a detachable, cylindrical or prismatic housing, which is arranged in the longitudinal direction of the reactor and is gastight in the circumferential direction, into an inner region having one or more catalytically active zones, each having a packing composed of monoliths stacked on top of one another, next to one another and behind one another and before each catalytically active zone in each case a mixing zone having solid internals are provided and into an outer region, which is supplied with an inert gas, arranged coaxially to the inner region. A heat exchanger is connected to the housing at one end of the reactor. | 06-21-2012 |
20120190904 | HYDROGEN REMOVAL FROM DEHYDROGENATION REACTOR PRODUCT - Disclosed is a dehydrogenation method that includes supplying a feed containing a hydrocarbon and steam into a dehydrogenation reactor containing a dehydrogenation catalyst, contacting the hydrocarbon and steam with the dehydrogenation catalyst to form a dehydrogenation product, wherein the dehydrogenation product comprises a dehydrogenated hydrocarbon, unreacted feed, steam and hydrogen, passing the dehydrogenation product through a membrane separator, and permeating hydrogen through a membrane positioned in the membrane separator. The hydrocarbon can be an alkyl aromatic and the dehydrogenated hydrocarbon can be a vinyl aromatic hydrocarbon, optionally the hydrocarbon can be an alkane and the dehydrogenated hydrocarbon can be an alkene. | 07-26-2012 |
20150073191 | PROCESS FOR THE PREPARATION OF HYDROGENATED HYDROCARBON COMPOUNDS - A process for the dehydrogenation of a paraffinic hydrocarbon compound, such as an alkane or alkylaromatic hydrocarbon compound to produce an unsaturated hydrocarbon compound, such as an olefin or vinyl aromatic compound or mixture thereof, in which a dehydrogenation catalyst contacts gaseous reactant hydrocarbons in a reactor at dehydrogenation conditions. | 03-12-2015 |
20150336859 | METHOD FOR REDUCING ENERGY CONSUMPTION IN A PROCESS TO PURIFY STYRENE MONOMER - An energy conservation process directed to the purification of styrene monomer via distillation after the dehydrogenation reaction of ethylbenzene to produce crude styrene is disclosed. As practiced today, the purification of styrene via distillation requires large amount energy (i.e., steam) to provide heat to the various distillation columns. The presently disclosed improved process allows for a reduction in the amount of steam needed for this purpose. | 11-26-2015 |
585441000 | Plural stage or with plural separation procedures | 9 |
20090247801 | Process for Toluene and Methane Coupling in a Microreactor - A process for making ethylbenzene and/or styrene by reacting toluene with methane in one or more microreactors is disclosed. In one embodiment a method of revamping an existing styrene production facility by adding one or more microreactors capable of reacting toluene with methane to produce a product stream comprising ethylbenzene and/or styrene is disclosed. | 10-01-2009 |
20100222621 | Oxydehydrogenation of Ethylbenzene Using Mixed Metal Oxide or Sulfated Zirconia Catalysts to Produce Styrene - Catalysts and methods are described for the dehydrogenation of ethylbenzene in the presence of an oxidant gas, such as oxygen or carbon dioxide, using a mixed metal oxide (MMO) catalyst or lithium-promoted sulfated zirconia catalyst to prepare styrene monomer. Ethylbenzene, steam or other inert gas, and an oxidant gas are fed to an oxydehydrogenation unit containing a MMO catalyst or lithium-promoted sulfated zirconia catalyst to produce a dehydrogenated product mixture. The dehydrogenated product mixture is cooled, off gases and condensate are separated from the mixture, and the dehydrogenated product mixture is fed to a distillation unit. Styrene monomer is distilled from the dehydrogenated product mixture. | 09-02-2010 |
20100240940 | Method of providing heat for chemical conversion and a process and system employing the method for the production of olefin - A method and system for providing heat to a chemical conversion process is advantageously employed in the production of olefin by the catalytic dehydrogenation of a corresponding hydrocarbon. The catalytic dehydrogenation process employs diluent steam operating at a steam to oil ratio which can be 1.0 or below and relatively low steam superheater furnace temperature. The process and system are advantageously employed for the production of styrene by the catalytic dehydrogenation of ethylbenzene. | 09-23-2010 |
20110065971 | Process for Cooling the Stream Leaving an Ethylbenzene Dehydrogenation Reactor - The present invention is a process for the production of styrene monomer from ethylbenzene comprising the steps of:
| 03-17-2011 |
20120078025 | USE OF A DIRECT HEATING DEVICE WITH A REHEATER IN A DEHYDROGENATION UNIT - Methods and processes for increasing the efficiency and/or expanding the capacity of a dehydrogenation unit by use of at least one direct heating unit are described. | 03-29-2012 |
20120149960 | PRODUCTION OF STYRENE FROM ETHYLBENZENE USING AZEOTROPIC VAPORIZATION AND LOW OVERALL WATER TO ETHYLBENZENE RATIOS - A process for dehydrogenation of alkylaromatic hydrocarbon, including: contacting a reactant vapor stream, comprising an alkylaromatic hydrocarbon and steam and having a first steam to alkylaromatic hydrocarbon ratio, with a dehydrogenation catalyst to form a vapor phase effluent comprising a product hydrocarbon, the steam, and unreacted alkylaromatic hydrocarbon; feeding at least a portion of the effluent to a splitter to separate the product hydrocarbon from the unreacted alkylaromatic hydrocarbon; recovered from the splitter as bottoms and overheads fractions, respectively; recovering heat from a first portion of said overheads fraction by indirect heat exchange with a mixture comprising alkylaromatic hydrocarbon and water to at least partially condense said portion and to form an azeotropic vaporization product comprising alkylaromatic vapor and steam having a second steam to alkylaromatic hydrocarbon ratio; and combining the azeotropic vaporization product with additional alkylaromatic hydrocarbon and additional steam, together or separately, to form the reactant vapor stream. | 06-14-2012 |
20130303815 | Process for Cooling the Stream Leaving an Ethylbenzene Dehydrogenation Reactor - The present invention is a process for the production of styrene monomer from ethylbenzene comprising the steps of:
| 11-14-2013 |
20140114107 | USE OF HYDROCARBON DILUENTS TO ENHANCE CONVERSION IN A DEHYDROGENATION PROCESS AT LOW STEAM/OIL RATIOS - A process for preparing styrene via the catalytic dehydrogenation of ethylbenzene, comprising recirculation of reaction byproducts to the initial reaction stream as an oil based diluent, providing an effective means for reducing the steam to oil ratio required to operate the catalytic dehydrogenation reactor. | 04-24-2014 |
20160016863 | METHOD FOR REDUCING ENERGY CONSUMPTION IN THE PRODUCTION OF STYRENE MONOMER UTILIZING AZEOTROPIC WATER/ETHYLBENZENE FEED VAPORIZATION - The present invention is directed to reduced-energy improvements in methods and systems to produce styrene monomer via ethylbenzene dehydrogenation. The methods and systems reduce utility cost and provide savings in comparison with the current technology practiced in the industry. | 01-21-2016 |
585442000 | Using halogen or S | 1 |
20120226084 | Molecular Sieve Composition (EMM-10), Its Method of Making, and Use for Hydrocarbon Conversions - This invention relates to a process for hydrocarbon conversion comprising contacting a hydrocarbon feedstock with a crystalline molecular sieve, in its ammonium exchanged form or in its calcined form, under conversion conditions to form a conversion product, said crystalline molecular sieve comprising unit cells with MWW topology and is characterized by diffraction streaking from the unit cell arrangement in the c direction as evidenced by the arced hk0 patterns of electron diffraction pattern. | 09-06-2012 |
585443000 | Using elemental O | 6 |
20100179358 | PROCCESS OF OXIDATIVE DEHYDROGENATION USING A BORIA-ALUMINA CATALYST - The invention relates to a process of oxydehydrogenating an alkyl-substituted aromatic hydrocarbon starting compound into the corresponding alkenyl-substituted aromatic hydrocarbon product, respectively, which process comprises a step of contacting the starting compound and an oxidant at dehydrogenating conditions, in the presence of a boria-alumina catalyst, characterized in that the boria-alumina catalyst has been prepared by a co-precipitation method. The co-precipitation method comprises the steps of preparing a solution of aluminium salt in an organic medium, followed by adding to this solution a boron compound and then adding ammonia gas to the mixture obtained in previous step to form a precipitate and/or a gel. This process enables oxydehydrogenation of ethyl-benzene to styrene with high selectivity. | 07-15-2010 |
20110130607 | REACTOR FOR CARRYING OUT AUTOTHERMAL GAS-PHASE DEHYDROGENATIONS - A reactor ( | 06-02-2011 |
20110213189 | Dehydrogenation Catalyst For Alkyl Aromatic Compounds Exhibiting High Performance In The Presence Of High-Concentration CO2 - A dehydrogenation catalyst composition for use in preparing an alkenyl aromatic compound by dehydrogenation of an alkyl aromatic compound, a method for preparing the catalyst, and a process for using the catalyst in a dehydrogenation reaction. Carbon dioxide (CO | 09-01-2011 |
20110245562 | Pulsed oxidative dehydrogenation process - The present invention provides a continuous process for the oxidative dehydrogenation of a lower paraffin to a lower olefin, preferably alpha olefin by sequentially providing pulses of an oxygen containing gas, an inert gas, the paraffin, and inert gas in the presence of a catalyst that preferably has the ability to hold and release oxygen, so that the paraffin and the oxygen do not directly mix in the reactor. | 10-06-2011 |
20130035531 | REACTOR FOR CARRYING OUT AN AUTOTHERMAL GAS-PHASE DEHYDROGENATION - A reactor in the form of a cylinder or prism wherein
| 02-07-2013 |
20140171709 | REACTOR FOR CARRYING OUT AN AUTOTHERMAL GAS-PHASE DEHYDROGENATION - A reactor for gas-phase dehydrogenation of a hydrocarbon-comprising stream with an oxygen-comprising stream over a monolithic heterogeneous catalyst. Catalytically active zone(s) comprising monoliths packed next to one another and/or above one another and a mixing zone having fixed internals upstream of each catalytically active zone. Feed line(s) for the hydrocarbon-comprising gas stream to be dehydrogenated at the lower end of the reactor. Independently regulable feed line(s), which supply distributor(s), for the oxygen-comprising gas stream into each of the mixing zones and discharge line(s) for the reaction gas mixture of the autothermal gas-phase dehydrogenation at the upper end of the reactor. The interior wall of the reactor is provided with insulation. The catalytically active zone(s) is accessible from the outside of the reactor via manhole(s). The catalytically active zone(s), mixing zone, independently regulable feed line(s), and distributor(s), may be designed as one component which can individually be mounted and removed. | 06-19-2014 |
585444000 | Using metal oxide, sulfide, or salt | 13 |
20080200741 | DEHYDROGENATION CATALYST, PROCESS FOR PREPARATION, AND A METHOD OF USE THEREOF - A process for preparing a dehydrogenation catalyst comprising preparing a mixture comprising a treated regenerator iron oxide and at least one additional catalyst component; and calcining the mixture wherein the treated regenerator iron oxide is prepared by washing a regenerator iron oxide at a temperature below 350° C. such that the treated regenerator iron oxide has a chloride content of at most 500 ppmw relative to the weight of iron oxide, calculated as Fe | 08-21-2008 |
20090156873 | Method for Extending Catalyst Life in Processes for Preparing Vinyl Aromatic Hydrocarbons - Methods and systems for extending the life of a dehydrogenation catalyst are described herein. For example, one embodiment includes providing an alkyl aromatic hydrocarbon feed stream to a reaction chamber, contacting the feed stream with a dehydrogenation catalyst to form a vinyl aromatic hydrocarbon, the dehydrogenation catalyst including iron oxide and an alkali metal catalysis promoter and supplying a catalyst life extender to at least one reaction chamber, the reaction chamber loaded with the dehydrogenation catalyst, wherein the catalyst life extender includes a potassium salt of a carboxylic acid. | 06-18-2009 |
20100081855 | Semi-Supported Dehydrogenation Catalyst - A catalyst having at least 5 weight percent of an alumina compound useful for the dehydrogenation of alkylaromatic hydrocarbons to alkenylaromatic hydrocarbons and methods of use are disclosed. | 04-01-2010 |
20110105818 | Dehydrogenation Catalyst with a Water Gas Shift Co-Catalyst - A catalyst comprising a dehydrogenation catalyst and a water gas shift co-catalyst can be used for the dehydrogenation of alkylaromatic hydrocarbons to alkenylaromatic hydrocarbons. For instance, the catalyst can be used for the dehydrogenation of ethylbenzene to styrene. The catalyst can include an iron compound, a potassium compound, and a cerium compound. | 05-05-2011 |
20110172480 | Vaporization and Transportation of Alkali Metal Salts - An apparatus and method for vaporizing and transporting an alkali metal salt is shown. The apparatus has a first conduit capable of transporting an alkali metal salt solution and a second conduit in fluid communication with the first conduit, the second conduit capable of transporting steam so that the alkali metal salt is dissipated into the steam forming a solution that can be transported, such as to a remote reaction zone. The solution can be transported via a third conduit that is capable of being heated by a heat source. The method can be used to add a promoter to a dehydrogenation catalyst during a dehydrogenation reaction. | 07-14-2011 |
20120123177 | PROCESS FOR THE PREPARATION OF HYDROGENATED HYDROCARBON COMPOUNDS - A process for the dehydrogenation of a paraffinic hydrocarbon compound, such as an alkane or alkylaromatic hydrocarbon compound to produce an unsaturated hydrocarbon compound, such as an olefin or vinyl aromatic compound or mixture thereof, in which a dehydrogenation catalyst contacts gaseous reactant hydrocarbons in a reactor at dehydrogenation conditions. | 05-17-2012 |
20130053608 | DEHYDROGENATION CATALYST OF ALKYL AROMATIC COMPOUNDS HAVING IMPROVED PHYSICAL STRENGTH, PROCESS FOR PRODUCING SAME, AND DEHYDROGENATION METHOD THEREOF - A high cerium-containing dehydrogenation catalyst of alkyl aromatic compounds used in industrial scale, comprising iron oxide and potassium oxide, having improved physical strength of catalyst pellets, and a method for producing the catalyst, and the dehydrogenation method using the catalyst are disclosed. In producing high cerium-containing pellets by using a dehydrogenation catalyst comprising iron oxide and potassium oxide, cerium carbonate hydroxide or a mixture of cerium carbonate hydroxide and other cerium compounds is used as a cerium source to produce catalytic pellets having improved physical strength. | 02-28-2013 |
20130165722 | Vaporization and Transportation of Alkali Metal Salts - An apparatus and method for vaporizing and transporting an alkali metal salt is shown. The apparatus has a first conduit capable of transporting an alkali metal salt solution and a second conduit in fluid communication with the first conduit, the second conduit capable of transporting steam so that the alkali metal salt is dissipated into the steam forming a solution that can be transported, such as to a remote reaction zone. The solution can be transported via a third conduit that is capable of being heated by a heat source. The method can be used to add a promoter to a dehydrogenation catalyst during a dehydrogenation reaction. | 06-27-2013 |
20130165723 | CATALYST FOR THE DEHYDROGENATION OF HYDROCARBONS - The present invention relates to a catalyst for the dehydrogenation of hydrocarbons which is based on iron oxide and additionally comprises at least one potassium compound, at least one cerium compound, from 0.7 to 10% by weight of at least one manganese compound, calculated as MnO | 06-27-2013 |
20140371501 | RECONSTITUTED DEHYDROGENATION CATALYST SHOWING SLOWED ACTIVITY LOSS WHEN COMPARED WITH FRESH CATALYST - A process for dehydrogenating alkane or alkylaromatic compounds comprising contacting the given compound and a dehydrogenation catalyst in a fluidized bed. The dehydrogenation catalyst is prepared from an at least partially deactivated platinum/gallium catalyst on an alumina-based support that is reconstituted by impregnating it with a platinum salt solution, then calcining it at a temperature from 400° C. to 1000° C., under conditions such that it has a platinum content ranging from 1 to 500 ppm, based on weight of catalyst; a gallium content ranging from 0.2 to 2.0 wt %; and a platinum to gallium ratio ranging from 1:20,000 to 1:4. It also has a Pt retention that is equal to or greater than that of a fresh catalyst being used in a same or similar catalytic process. | 12-18-2014 |
585445000 | Cr-, Mo-, or W-containing | 3 |
20090012337 | METHOD FOR PRODUCING GRAPHITE NANOCATALYSTS HAVING IMPROVED CATALYTIC PROPERTIES - High temperature treatment of graphite nanofibers to increase their catalytic activity. The heat treated graphite nanofiber catalysts are suitable for catalyzing chemical reactions such as oxidation, hydrogenation, oxidative-dehydrogenation, and dehydrogenation. | 01-08-2009 |
20120209048 | Catalyst, Its Preparation and Use - A dehydrogenation catalyst is described that comprises an iron oxide, an alkali metal or compound thereof, and rhenium or a compound thereof. A process for preparing a dehydrogenation catalyst comprising preparing a mixture of iron oxide, an alkali metal or compound thereof, and rhenium or a compound thereof is also described. Additionally, a dehydrogenation process using the catalyst and a process for preparing polymers are described. | 08-16-2012 |
20130109898 | PROCESS FOR REPROCESSING SPENT STYRENE CATALYSTS | 05-02-2013 |