Patent application number | Description | Published |
20080242906 | Alkylation Process - A process for the production of ethylbenzene by the ethylation of benzene in the critical phase in a reaction zone containing a molecular sieve aromatic alkylation catalyst comprising cerium-promoted zeolite beta. A polyethylbenzene is supplied into the reaction zone and into contact with the cerium-promoted zeolite beta having a silica/alumina mole ratio within the range of 20-500. The reaction zone is operated at temperature and pressure conditions in which benzene is in the supercritical phase to cause ethylation of the benzene and the transalkylation of polyethylbenzene and benzene in the presence of the zeolite beta catalyst. An alkylation product is produced containing ethylbenzene as a primary product with the attendant production of heavier alkylated byproducts of no more than 60 wt. % of the ethylbenzene. The alkylation reaction zone is operated under conditions providing a composite byproduct yield of propyl benzene and butyl benzene relative to ethylbenzene, which is no more than one half of the corresponding yield byproduct for zeolite beta promoted with lanthanum. The production of ethylbenzene in the critical phase alkylation reaction zone is attended by recycle of a polyalkylated aromatic component of the reaction product back to the reaction zone. | 10-02-2008 |
20080275286 | Freeze Dry Process for the Preparation of a High Surface Area and High Pore Volume Catalyst - The present invention provides a process for the preparation of a catalyst having a high surface area and pore volume. The process includes freeze drying an intermediary of the catalyst. The present invention further includes a catalyst prepared by a process that includes the freeze drying step. The present invention also includes a catalyst having a high acidity, as indicated by having an ammonium desorption peak at greater than about 500° C. The prevent invention further includes a method of manufacturing isomerized organic compounds using the catalyst. | 11-06-2008 |
20080319243 | Toluene disproportionation catalyst - A process for the disproportionation of a toluene containing feedstock employing a nickel modified mordenite catalyst comprising particulate mordenite having nickel dispersed throughout the catalyst particles to provide surface nickel and interior nickel within the mordenite crystal structure. The catalyst is pretreated to selectively deactivate the surface nickel to provide a surface nickel content of reduced catalytic activity. The interior nickel thus has a higher catalytic activity than the surface nickel. The feedstock is supplied to a reaction zone containing the catalyst to cause disproportionation of toluene in the feedstock to produce a mixture of benzene and xylene. The non-aromatic content of the product is less than the non-aromatic content of a corresponding disproportionation product which would be produced by the disproportionation of the feedstream in the presence of a corresponding nickel mordenite catalyst which has not been pretreated. | 12-25-2008 |
20090023966 | Treatment of Alkylation Catalyst Poisons - Alkylation processes are described herein. The alkylation process generally includes contacting an input stream including benzene with an alkylation catalyst and an alkylating agent to form an alkylation output stream including ethylbenzene. The alkylation process further includes contacting at least a portion of the alkylation output stream with a transalkylation catalyst and a benzene source to form a transalkylation output stream, wherein the benzene source is selected to minimize the amount of alkylation catalyst poisons contacting the alkylation catalyst. | 01-22-2009 |
20090143504 | Bitumen/Rubber Compositions Crosslinked with Polythiomorpholines, Polysulfides and/or Mercaptobenzimidazole - Asphalt and elastomeric polymer compositions crosslinked with mixed polythiomorpholines or at least one alkyl polysulfide can give polymer modified asphalts (PMAs) with improved properties and/or reduced H | 06-04-2009 |
20090149577 | Using Excess Levels of Metal Salts to Improve Properties when Incorporating Polymers in Asphalt - In methods of preparing asphalt and elastomeric polymer compositions such as polymer modified asphalt (PMA), it has been discovered that the compatibility can be improved by adding excess amounts of certain organic and inorganic metal salts beyond the proportions normally used. Suitable metal salts may be metal oxides that include, but are not necessarily limited to, zinc oxide, calcium oxide, and the like. The method of the invention also permits asphalt modified with other polymers such as ground tire rubber (GTR) to have improved compatibility. Additionally, the use of excess amounts of these metal salts helps control gel formation. | 06-11-2009 |
20090149685 | Treatment of Alkylation Catalyst Poisons with Dehydrogenation - Methods and processes for reducing alkylation catalyst poisoning are described herein. Such methods generally include providing a dehydrogenation system including a dehydrogenation reactor and a separation system, wherein the separation system includes a first column and a second column, introducing an alkyl aromatic hydrocarbon into the dehydrogenation reactor, contacting the alkyl aromatic hydrocarbon with a dehydrogenation catalyst disposed within the dehydrogenation reactor to form a dehydrogenation output stream comprising a vinyl aromatic hydrocarbon, passing at least a portion of the dehydrogenation output stream to first column, recovering a first overhead fraction including benzene and a first bottoms fraction from the first column, passing at least a portion of the benzene from the first column to an alkylation system including an alkylation catalyst, passing the first bottoms fraction from the first column to the second column, recovering a second overhead fraction and a second bottoms fraction from the second column, withdrawing offtest from effluent streams selected from the dehydrogenation output stream, the first bottoms fraction, the second bottoms fraction and combinations thereof to form withdrawn offtest and introducing the withdrawn offtest into the separation system downstream from the first column. | 06-11-2009 |
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 |
20090264278 | Method and Apparatus for Addition of an Alkali Metal Promoter to a Dehydrogenation Catalyst - An apparatus and method for adding an alkali metal promoter into steam and contacting the solution with a dehydrogenation catalyst during a dehydrogenation reaction is disclosed. 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 prior to entry into a dehydrogenation reaction zone. | 10-22-2009 |
20100022813 | Process for Reducing Ethylbenzene Content from an Aromatic Stream - A method of reducing the ethylbenzene content in a stream containing xylene is disclosed. The method includes the reaction of ethylbenzene, such as a disproportionation or transalkylation reaction, to produce benzene and other hydrocarbon compound and can include the separation of at least a portion of the resulting benzene and other hydrocarbon compounds to produce a xylene stream having reduced ethylbenzene content. | 01-28-2010 |
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 |
20100041933 | Catalyst and Process for Hydrocarbon Conversions - A nickel-mordenite catalyst promoted with Rhodium that is useful in the conversion of hydrocarbons is disclosed. The catalyst and methods for its use can provide hydrocarbon conversion with an extended catalyst life as compared to nickel-mordenite catalyst not promoted with Rhodium. | 02-18-2010 |
20100041934 | Toluene Disproportionation Using Nb/Mordenite Catalyst - A molecular sieve catalyst useful in the conversion of hydrocarbons containing niobium is disclosed, along with a process for the disproportionation of toluene to benzene and xylene using such catalyst. | 02-18-2010 |
20100081856 | Process for Ethylbenzene Production - A method of producing an alkylaromatic by the alkylation of an aromatic with an alkylating agent, such as producing ethylbenzene by an alkylation reaction of benzene, is disclosed. The method includes using an H-beta catalyst to minimize process upsets due to alkylation catalyst deactivation and the resulting catalyst regeneration or replacement. The H-beta catalyst can be used in a preliminary alkylation reactor that is located upstream of the primary alkylation reactor. The H-beta catalyst used in a preliminary alkylation reactor can reduce the deactivation of the catalyst in the primary alkylation reactor. | 04-01-2010 |
20100162617 | Stabilization of Pygas for Storage - A method for stabilizing pyrolysis gasoline in storage involves adding an effective amount of a quinone methide compound to the pyrolysis gasoline. The quinone methide does not require oxygen for activity. Embodiments of the quinone methide do not contain nitrogen and will have a reduced tendency for ammonia production. | 07-01-2010 |
20100168347 | Processes Using Dividing Wall Distillation Column - A method for the separation of hydrocarbon compounds utilizing a dividing wall distillation column is described. The dividing wall distillation column enables one or more side draw stream to be removed from the dividing wall distillation column in addition to an overhead stream and a bottoms stream. | 07-01-2010 |
20100168486 | Method for Production of Styrene from Toluene and Methanol - A process is disclosed for making styrene by converting methanol to formaldehyde in a reactor then reacting the formaldehyde with toluene to form styrene in a separate reactor. | 07-01-2010 |
20100249473 | Oxidative Coupling of Hydrocarbons as Heat Source - A process for the coupling of hydrocarbons and utilizing the heat energy produced by the reaction is disclosed. In one embodiment the process can include reacting methane with oxygen to form a product stream containing ethane and further processing the ethane to ethylene in an existing ethylene production facility while using the heat energy produced by the reaction within the facility. | 09-30-2010 |
20110015311 | ASPHALT COMPOSITIONS AND THE PREPARATION THEREOF - Asphalt compositions and methods of forming such are described herein. The asphalt compositions and methods of forming such are generally adapted to enable open air processing while producing asphalt compositions that exhibit properties capable of meeting SUPERPAVE™ specifications. | 01-20-2011 |
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 |
20110077444 | Metathesis Catalyst for Olefin Production - A catalyst includes a metathesis catalyst and an isomerization catalyst. In one embodiment, WO | 03-31-2011 |
20110083998 | Petrochemical Processes - Petrochemical processes, including reforming processes are described herein. The reforming processes generally include introducing an input stream to a reforming unit having a reforming catalyst disposed therein, wherein the input stream includes a naphtha having an N+2A value of from about 65 to about 85 and contacting the input stream with the reforming catalyst and hydrogen to form an output stream. | 04-14-2011 |
20110105316 | Mixed Metal Oxide Ingredients for Bulk Metal Oxide Catalysts - A bulk metal oxide catalyst can be prepared by combining metal oxide powders or oxide-producing species and reacting selected ingredients prior to their inclusion in the formulation of the catalyst. Mixed metal oxide phases can be designed and prepared for use as an ingredient for a bulk metal oxide catalyst to alter properties for catalytic performance or physical properties that would not be obtained using mixtures of singular metal oxide ingredients. | 05-05-2011 |
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 |
20110130609 | Dilute Liquid Phase Alkylation - Methods of forming ethylbenzene are described herein. In one embodiment, the method includes contacting dilute ethylene with benzene in the presence of an alkylation catalyst to form ethylbenzene, wherein such contact occurs in a liquid phase reaction zone and recovering ethylbenzene from the reaction zone. | 06-02-2011 |
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 |
20110201862 | Processes Using Dividing Wall Distillation Column - A method for the separation of hydrocarbon compounds utilizing a dividing wall distillation column is described. The dividing wall distillation column enables one or more side draw stream to be removed from the dividing wall distillation column in addition to an overhead stream and a bottoms stream. | 08-18-2011 |
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 |
20110207982 | PROCESS FOR ETHYLBENZENE PRODUCTION - A method of producing an alkylaromatic by the alkylation of an aromatic with an alkylating agent, such as producing ethylbenzene by an alkylation reaction of benzene, is disclosed. The method includes using an H-beta catalyst in a preliminary alkylation reactor that is located upstream of the primary alkylation reactor. The H-beta catalyst used in a preliminary alkylation reactor can be regenerated and the regenerated H-beta zeolite catalyst can have a deactivation rate that is no more than 120% of the deactivation rate of a fresh H-beta zeolite catalyst. | 08-25-2011 |
20110245568 | Dehydrogenation Reactions of N-Butene to Butadiene - A method for the dehydrogenation of n-butene to form butadiene over a dehydrogenation catalyst with a butadiene yield of at least 40 mol % is disclosed. Embodiments involve operating the dehydrogenation reactor at a pressure of 1,000 mbar or less. | 10-06-2011 |
20110253596 | Regenerable Composite Catalysts for Paraffin Aromatization - A composite catalyst for aromatization of paraffins includes a molecular sieve catalyst and metal dehydrogenation catalyst present as discrete catalysts in a physical admixture. The molecular sieve catalyst can be a zeolite and the metal dehydrogenation catalyst can be in the form of a nanoctructure, such as zinc oxide nanopowder. The catalyst can convert feedstocks such as LPG to aromatics and can be regenerated in-situ. | 10-20-2011 |
20110257452 | Regenerable Composite Catalysts for Hydrocarbon Aromatization - A composite catalyst for aromatization of hydrocarbons includes a molecular sieve catalyst and metal dehydrogenation catalyst present as discrete catalysts in a physical admixture. The molecular sieve catalyst can be a zeolite and the metal dehydrogenation catalyst can be in the form of a nanostructure, such as zinc oxide nanopowder. The catalyst can convert hydrocarbon feedstocks, such as alkanes and alkenes, to aromatics and can be regenerated in-situ. | 10-20-2011 |
20110269877 | ASPHALT COMPOSITIONS AND THE PREPARATION THEREOF - Asphalt compositions and methods of forming such are described herein. The asphalt compositions and methods of forming such are generally adapted to enable open air processing while producing asphalt compositions that exhibit properties capable of meeting SUPERPAVE™ specifications. | 11-03-2011 |
20110278201 | Stacked Bed Hydrotreating Reactor System - Methods and systems for diesel formation are described herein. The diesel hydrotreating systems generally include a hydrodesulfurization unit having a catalyst system disposed therein and adapted to contact an input stream with the catalyst system therein to form diesel. The catalyst system generally includes a plurality of catalysts including a first catalyst including a hydrodesulfurization catalyst having a first pore diameter and a second catalyst having a second pore diameter, wherein the second pore diameter is larger than the first pore diameter. | 11-17-2011 |
20110306684 | CHEMICAL PRODUCTION PROCESSES UTILIZING SYNGAS FROM PLASMA PYROLYSIS - Chemical production processes are described herein. The chemical production processes generally include providing municipal solid waste; subjecting the municipal solid waste to plasma pyrolysis to form an intermediate for chemical production, wherein the intermediate includes carbon monoxide and hydrogen; and transferring the intermediate from the plasma pyrolysis to a chemical or liquid fuel production process. | 12-15-2011 |
20110306813 | Dilute Ethylene Alkylation of Benzene - Methods of forming ethylbenzene are described herein. In one embodiment, the method includes contacting dilute ethylene with benzene in the presence of an alkylation catalyst to form ethylbenzene, wherein such contact occurs in a reaction zone containing a gaseous phase and recovering ethylbenzene from the reaction zone. | 12-15-2011 |
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 |
20120071317 | TOLUENE DISPROPORTIONATION USING Nb/MORDENITE CATALYST - A molecular sieve catalyst useful in the conversion of hydrocarbons containing niobium is disclosed, along with a process for the disproportionation of toluene to benzene and xylene using such catalyst. | 03-22-2012 |
20120078024 | Removal of Hydrogen From Dehydrogenation Processes - A process and system for dehydrogenating certain hydrocarbons is disclosed. The process includes contacting a dehydrogenatable hydrocarbon with steam in the presence of a dehydrogenation catalyst to form hydrogen and a dehydrogenated hydrocarbon. Some of the hydrogen is then removed and some of the remaining dehydrogenatable hydrocarbon is dehydrogenated. | 03-29-2012 |
20120108863 | Depolymerizatin of Plastic Materials - A styrene monomer reclamation process and system is disclosed. The styrene monomer reclamation process includes providing a waste plastic. The waste plastic includes styrenic polymers. The waste plastic is formed into polymer particles. At least a portion of the polymer particles are dissolved in a solvent to form a polymer stream. The dissolved polymer particles are depolymerized to form a styrene monomer stream. | 05-03-2012 |
20120215045 | Staged Injection of Oxygen for Oxidative Coupling or Dehydrogenation Reactions - Methods and apparatus of staged injection of an oxidant into a feedstream within a reactor are disclosed. The staged injection of the oxidant can better disperse the catalytic reactions throughout the catalyst bed. The staged injection of the oxidant can lower the content of carbon oxides in the reaction product stream, which can reduce energy release from the reactor. | 08-23-2012 |
20120238789 | 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. | 09-20-2012 |
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 |
20130184508 | Dilute Liquid Phase Alkylation - Methods of forming ethylbenzene are described herein. In one embodiment, the method includes contacting dilute ethylene with benzene in the presence of an alkylation catalyst to form ethylbenzene, wherein such contact occurs in a liquid phase reaction zone and recovering ethylbenzene from the reaction zone. | 07-18-2013 |
20130225888 | Process for the Reduction of Alkylation Catalyst Deactivation - Alkylation systems and methods of minimizing alkylation catalyst regeneration are described herein. The alkylation systems generally include a preliminary alkylation system adapted to receive an input stream including an alkyl aromatic hydrocarbon and contact the input stream with a preliminary alkylation catalyst disposed therein to form a first output stream. The preliminary alkylation catalyst generally includes a zeolite catalyst having a SiO | 08-29-2013 |
20130231514 | Process for Ethylbenzene Production - A method of producing an alkylaromatic by the alkylation of an aromatic with an alkylating agent, such as producing ethylbenzene by an alkylation reaction of benzene, is disclosed. The method includes using an H-beta catalyst to minimize process upsets due to alkylation catalyst deactivation and the resulting catalyst regeneration or replacement. The H-beta catalyst can be used in a preliminary alkylation reactor that is located upstream of the primary alkylation reactor. The H-beta catalyst used in a preliminary alkylation reactor can reduce the deactivation of the catalyst in the primary alkylation reactor. | 09-05-2013 |
20140005454 | Process for the Reduction of Alkylation Catalyst Deactivation Utilizing Low Silica to Alumina Ratio Catalyst | 01-02-2014 |