Patent application number | Description | Published |
20080221375 | Catalyst Treatment Useful for Aromatics Conversion Process - A process for preparing a transalkylation catalyst, the catalyst itself, and a transalkylation process for using the catalyst are herein disclosed. The catalyst comprises rhenium metal on a solid-acid support such as mordenite, which has been treated with a sulfur-based agent. Such treatment reduces the amount of methane produced by metal hydrogenolysis in a transalkylation process wherein heavy aromatics like A | 09-11-2008 |
20090032386 | Xylene Production Apparatus With Integrated Feedstock Treatment - An apparatus for producing a xylene isomer, which integrates the removal of olefins into a reaction zone of the apparatus is disclosed. Apparatus of this invention enable the use of aromatic feedstocks containing olefins and reduce or eliminate the need for feed pretreatment by olefin removal assemblies or zones such as hydrotreating, hydrogenation, and clay and/or molecular sieve treating, thereby reducing capital and operating costs. | 02-05-2009 |
20090036724 | Xylene Production Processes With Integrated Feedstock Treatment - A process for aromatic transalkylation and olefin reduction of a feed stream is disclosed. Transalkylation conditions provide a product having increased xylene concentration and reduced olefin concentration relative to the feed. The process may be used in a xylene production facility to minimize or avoid the necessity of feedstock pretreatment such as hydrotreating, hydrogenation, or treating with clay and/or molecular sieves. | 02-05-2009 |
20110046427 | XYLENE PRODUCTION PROCESSES WITH INTEGRATED FEEDSTOCK TREATMENT - A process for aromatic transalkylation and olefin reduction of a feed stream is disclosed. Transalkylation conditions provide a product having increased xylene concentration and reduced olefin concentration relative to the feed. The process may be used in a xylene production facility to minimize or avoid the necessity of feedstock pretreatment such as hydrotreating, hydrogenation, or treating with clay and/or molecular sieves. | 02-24-2011 |
20110178356 | PROCESS FOR INCREASING A MOLE RATIO OF METHYL TO PHENYL - One exemplary embodiment can be a process for increasing a mole ratio of methyl to phenyl of one or more aromatic compounds in a feed. The process can include reacting an effective amount of one or more aromatic compounds and an effective amount of one or more aromatic methylating agents to form a product having a mole ratio of methyl to phenyl of at least about 0.1:1 greater than the feed. | 07-21-2011 |
20120065446 | CATALYSTS, PROCESSES FOR PREPARING THE CATALYSTS, AND PROCESSES FOR TRANSALKYLATING AROMATIC HYDROCARBON COMPOUNDS - A catalyst comprising an aluminosilicate zeolite having an MOR framework type, an acidic MFI molecular sieve component having a Si/Al | 03-15-2012 |
20120083635 | Processes for Transalkylating Aromatic Hydrocarbons - A process for transalkylating aromatic hydrocarbon compounds, the process comprising introducing an aromatic hydrocarbon feed stream and a water source to a transalkylation zone. The feed stream contacts a catalyst in the transalkylation zone in the presence of water, and produces a reaction product stream comprising benzene and xylene. The invention includes methods to control the transalkylation process. | 04-05-2012 |
20120083636 | Processes for Transalkylating Aromatic Hydrocarbons - A process for transalkylating aromatic hydrocarbon compounds, the process comprising introducing an aromatic hydrocarbon feed stream and a sulfur source to a transalkylation zone. The feed stream contacts a catalyst in the transalkylation zone in the presence of sulfur, and produces a reaction product stream comprising benzene and xylene. The invention includes methods to control the transalkylation process. | 04-05-2012 |
20120083638 | PROCESSES FOR TRANSALKYLATING AROMATIC HYDROCARBONS AND CONVERTING OLEFINS - A process for aromatic transalkylation and olefin reduction of a feed stream is disclosed. Transalkylation conditions produce xylenes and reduced olefins in the feed. The process may be used in a xylene production facility to minimize or avoid the necessity of feedstock pretreatment such as hydrotreating, hydrogenation, or treating with clay and/or molecular sieves. | 04-05-2012 |
20120277510 | Processes for Transalkylating Aromatic Hydrocarbons - A process for transalkylating aromatic hydrocarbon compounds, the process comprising introducing an aromatic hydrocarbon feed stream and a water source to a transalkylation zone. The feed stream contacts a catalyst in the transalkylation zone in the presence of water, and produces a reaction product stream comprising benzene and xylene. The invention includes methods to control the transalkylation process. | 11-01-2012 |
20120277512 | Processes for Transalkylating Aromatic Hydrocarbons - A process for transalkylating aromatic hydrocarbon compounds, the process comprising introducing an aromatic hydrocarbon feed stream and a sulfur source to a transalkylation zone. The feed stream contacts a catalyst in the transalkylation zone in the presence of sulfur, and produces a reaction product stream comprising benzene and xylene. The invention includes methods to control the transalkylation process. | 11-01-2012 |
20130066123 | PROCESS FOR TRANSALKYLATING AROMATIC HYDROCARBONS - The present invention is a process for transalkylating aromatic hydrocarbon compounds, the process comprising introducing an aromatic hydrocarbon feed stream into a transalkylation zone to yield high-purity benzene as a byproduct while meeting transalkylation objectives. The feed stream contacts a catalyst in the transalkylation zone under conditions adjusted to control benzene purity as well as transalkylation performance. | 03-14-2013 |
20130253247 | Catalysts, Processes for Preparing the Catalysts, and Processes for Transalkylating Aromatic Hydrocarbon Compounds - A catalyst comprising an aluminosilicate zeolite having an MOR framework type, an acidic MFI molecular sieve component having a Si/Al | 09-26-2013 |
20140058157 | PROCESS FOR INCREASING A MOLE RATIO OF METHYL TO PHENYL - One exemplary embodiment can be a process for increasing a mole ratio of methyl to phenyl of one or more aromatic compounds in a feed. The process can include reacting an effective amount of one or more aromatic compounds and an effective amount of one or more aromatic methylating agents to form a product having a mole ratio of methyl to phenyl of at least about 0.1:1 greater than the feed. | 02-27-2014 |
20140100403 | LOW PRESSURE TRANSALKYLATION PROCESS - A process for transalkylation is described. The process operates at a lower pressure than a typical transalkylation processes, and provides higher benzene purity with comparable or lower ring loss compared to the typical transalkylation process. The xylene selectivity is comparable to or higher than the standard process, and the ethyl benzene selectivity is comparable to or lower than the standard process. | 04-10-2014 |
20140163269 | CATALYTIC PYROLYSIS USING UZM-39 ALUMINOSILICATE ZEOLITE - A new family of coherently grown composites of TUN and IMF zeotypes has been synthesized and shown to be effective catalysts for catalytic pyrolysis of biomass. These zeolites are represented by the empirical formula. | 06-12-2014 |
20140163286 | AROMATIC TRANSALKYLATION USING UZM-39 ALUMINOSILICATE ZEOLITE - A new family of coherently grown composites of TUN and IMF zeotypes has been synthesized and shown to be effective catalysts for aromatic transalkylation reactions. These zeolites are represented by the empirical formula. | 06-12-2014 |