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| Number | Title | Issue Date |
| 8182780 | Synthesis of chabazite-containing molecular sieves and their use in the conversion of oxygenates to olefins In a method of synthesizing a silicoaluminophosphate molecular sieve having 90%+CHA framework type character, a reaction mixture is prepared comprising first combining a reactive source of aluminum with a reactive source of phosphorus to form a primary mixture that ... | 05/22/2012 |
| 8177965 | Enhancement of saturates content in heavy hydrocarbons utilizing ultrafiltration This invention relates to an ultrafiltration process for separating a heavy hydrocarbon stream to produce an enriched saturates content stream(s) utilizing an ultrafiltration separations process. The enriched saturates content streams can then be further processed i... | 05/15/2012 |
| 8128811 | Hydroprocessing using rejuvenated supported hydroprocessing catalysts Methods for hydroprocessing of hydrocarbon feedstocks, including hydrodesulfurization and hydrodenitrogenation, using rejuvenated supported metallic catalysts are provided. The supported metallic catalysts comprised of a Group VIII metal, a Group VIB metal, are reju... | 03/06/2012 |
| 8119014 | Systems and methods to remove liquid product and fines from a slurry reactor The present invention provides methods and means for separating slurry liquid from catalyst in a three-phase slurry process. The embodiments of the invention are characterized by conducting the three-phase process under conditions to provide an upper region in the s... | 02/21/2012 |
| 8114273 | Two stage hydrotreating of distillates with improved hydrogen management An improved hydrotreating process for removing sulfur from distillate boiling range feedstreams. This improved process utilizes a two stage hydrotreating process scheme, each stage associated with an acid gas removal zone wherein one of the stages utilizes a rapid c... | 02/14/2012 |
| 8071071 | Treatment of small pore molecular sieves and their use in the conversion of oxygenates to olefins A method is disclosed of treating a porous crystalline molecular sieve having a pore size less than or equal to about 5 Angstroms to decrease its coke selectivity in oxygenate to olefin conversion reactions. The method comprises contacting the molecular sieve with a... | 12/06/2011 |
| 8062508 | Hydroprocessing using bulk bimetallic catalysts The invention relates to a process for upgrading hydrocarbonaceous feedstreams by hydroprocessing using bulk bimetallic catalysts. More particularly, the invention relates to a catalytic hydrotreating process for the removal of sulfur and nitrogen from a hydrocarbon... | 11/22/2011 |
| 8058497 | Reducing deleterious effects of aldehydes in oxygenates to olefins reactions with catalysts containing basic metal oxides The present invention relates to processes for converting a mixed alcohol feedstock, including methanol and a higher alcohol, to olefins such as ethylene, propylene, and the like. In addition, the olefins produced by the oxygenate-to-olefin reaction system can then ... | 11/15/2011 |
| 8003074 | Synthesis of high activity ZSM-48 A process for producing ZSM-48 comprises crystallizing an aqueous reaction mixture comprising at least one source of silica, at least one source of alumina, at least one source of hydroxyl ions, at least one source of diquaternary alkylammonium, R2+, ions... | 08/23/2011 |
| 7997426 | Acid tolerant polymeric membrane and process for the recovery of acid using polymeric membranes A multi-layer membrane structure including a crosslinked polymeric membrane, such as a crosslinked polyvinyl sulfate membrane or a crosslinked copolymer polyvinyl sulfate and polyvinyl alcohol membrane, is provided. The membrane structure is suitable for use in an a... | 08/16/2011 |
| 7989669 | Recycle of DME in an oxygenate-to-olefin reaction system This invention is directed to a process for producing one or more olefins from an oxygenate feed. According to the invention, an oxygenate stream is provided and a recycle stream is added to the oxygenate stream to form a feed stream to an oxygenate-to-olefin conver... | 08/02/2011 |
| 7988848 | Activating hydroprocessing catalysts using carbon monoxide and use of catalysts for hydroprocessing This invention relates to a process for activating a hydroprocessing catalyst and the use of activated catalyst for hydroprocessing. More particularly, hydroprocessing catalysts are activated in the presence of carbon monoxide. The catalysts that have been activated... | 08/02/2011 |
| 7977521 | Oxygenate to olefins process involving supercritcal conditions This invention, in one embodiment, is drawn to a process for forming olefin product by contacting an oxygenate with an olefin-forming catalyst under supercritical conditions to form an olefin product. This invention also relates to methods for activating molecular s... | 07/12/2011 |
| 7947621 | Method of making and process for using molecular sieve catalyst This invention provides a process for manufacturing a catalyst with a desired attrition index, comprising the steps of selecting at least one molecular sieve having a morphology and size index (MSI) of from 1 to about 1000 to secure said desired attrition index of s... | 05/24/2011 |
| 7939043 | Synthesis of chabazite structure-containing molecular sieves and their use in the conversion of oxygenates to olefins In a method of synthesizing a silicoaluminophosphate or aluminophosphate molecular sieve comprising a CHA framework-type material, a synthesis mixture is provided comprising a source of aluminum, a source of phosphorus, optionally a source of silicon and at least on... | 05/10/2011 |
| 7935857 | Product recovery in gas-solids reactors A gas-solids reaction system is provided for improving product recovery in a multiple reactor reaction system. The solids of the product gas-solids flows from the multiple reactors are separated out in a separation vessel having a baffled transition zone. Additional... | 05/03/2011 |
| 7906697 | Method of circulating catalyst between a catalyst regenerator and an external catalyst cooler This invention relates to efficiently regenerating catalyst particles by minimizing the formation of localized “hot spots” and “cold spots” in a regeneration zone. Specifically this invention relates to a method for controlling regenerator temperature in an ... | 03/15/2011 |
| 7901664 | Synthesis of aluminophosphate and metalloaluminophosphate molecular sieves In a method of synthesizing an aluminophosphate or metalloaluminophosphate molecular sieve, a synthesis mixture is provided comprising water, a source of aluminum, a source of phosphorus, optionally a source of a metal other than aluminum, a tertiary amine, and an a... | 03/08/2011 |
| 7901649 | Method of synthesizing silicoaluminophosphate molecular sieves In a method of synthesizing a silicoaluminophosphate molecular sieve, a synthesis mixture is prepared by combining a source of phosphorus and at least one organic directing agent; and then introducing a source of aluminum into the combination of the phosphorus sourc... | 03/08/2011 |
| 7893310 | Method of separating condensed liquid from an olefin stream This invention is to a process for separating condensed water and entrained solids from an olefin stream so that fouling of the separation equipment by the entrained solids is reduced or eliminated. The process involves injecting an antifouling agent into a water co... | 02/22/2011 |
| 7879920 | Oxygenate to olefin manufacture and recovery process This invention is directed to methods for forming an olefin stream from a methanol stream. A lower grade methanol, such as chemical grade or crude methanol, can be used as feed to form the olefin stream. The process uses a relatively simple distillation type step to... | 02/01/2011 |
| 7867937 | Drying device for producing small quantities of controlled particle size catalysts which are appropriate for use in fluidized bed operations such as fluid catalytic cracking Catalysts for experimentation are produced having a controlled matrix pore structure. The manufacturing process utilizes tape casting in the drying procedure in which a catalyst slurry is cast on a substrate and dried at a temperature of between about 50° C. to 200... | 01/11/2011 |
| 7829751 | Processes for converting oxygenates to olefins using aluminosilicate catalysts The present invention relates to processes for forming mixed alcohols containing methanol and ethanol. The mixed alcohol can then be used as a feedstock for an oxygenate to olefin reaction system for conversion thereof to ethylene, propylene, and the like. In additi... | 11/09/2010 |
| 7807122 | Metalloaluminophosphate molecular sieves, their synthesis and use A process for manufacturing a metalloaluminophosphate molecular sieve, the process comprising the steps of: (a) combining at least one silicon source, at least one metal source, at least one structure-directing-agent (R), at least one phosphorus source, and at least... | 10/05/2010 |
| 7799118 | Product recovery in gas-solids reactors A gas-solids reaction system is provided for improving product recovery in a multiple reactor reaction system. The solids of the product gas-solids flows from the multiple reactors are separated out in a separation vessel having a baffled transition zone. Additional... | 09/21/2010 |
| 7790941 | Oxygenate-to-olefin conversions in a baffled reactor The invention concerns methods and systems for minimizing back-mixing of feedstock flow in converting oxygenates to olefins. In one embodiment, back-mixing is reduced by providing a reactor that includes baffles to reduce the hydraulic diameter of at least a portion... | 09/07/2010 |
| 7785554 | Process for manufacture of silicoaluminophosphate molecular sieves A process for manufacturing a silicoaluminophosphate molecular sieve comprising at least one intergrown phase of AEI and CHA framework types, the process comprising the steps of (a) combining at least one silicon source, at least one phosphorus source, at least one ... | 08/31/2010 |
| 7781633 | Method for converting an oxygenate feed to a light olefin The present invention relates to a method for converting a feed including an oxygenate to a product including a light olefin. In particular, this invention relates to converting an oxygenate feedstock with a silicoaluminophosphate catalyst to a product including a l... | 08/24/2010 |
| 7781490 | Process for the production of mixed alcohols The present invention relates to processes for forming mixed alcohols containing methanol and ethanol. The mixed alcohol can then be used as a feedstock for an oxygenate-to-olefin reaction system for conversion thereof to ethylene, propylene, and the like. In additi... | 08/24/2010 |
| 7772337 | Method of formulating a molecular sieve catalyst composition by controlling component addition This invention provides a method of making a molecular sieve catalyst composition comprising the steps of: a) combining molecular sieve crystals with binder and liquid to form a binder-sieve mixture; b) combining the binder-sieve mixture with matrix material to form... | 08/10/2010 |
| 7772335 | Light olefin selective oxygenate conversion process using CHA framework type aluminosilicate The invention relates to a method for converting an oxygenated hydrocarbon feedstock into an olefin product comprising: (a) forming a CHA framework type aluminosilicate sieve catalyst made from a substantially fluoride-free synthesis mixture comprising silicon and a... | 08/10/2010 |
| 7767871 | Method of recovering crystalline material and compositions therefrom A method for recovering molecular sieve crystals from a synthesis mixture that comprises adding at least one flocculant having a certain molecular weight and a certain charge density that contribute to the acceleration of the settling rate of the molecular sieve cry... | 08/03/2010 |
| 7763765 | Method of high pressure and high capacity oxygenate conversion with catalyst exposure cycle A gas-solids reaction system is provided for improving product recovery in a multiple reactor reaction system. An oxygenate feedstock, desirably of high concentration in oxygenate, is reacted with a catalyst having a low to modest acidity and a Si/Al2 rat... | 07/27/2010 |
| 7754187 | Synthesis of chabazite-containing molecular sieves and their use in the conversion of oxygenates to olefins A method is disclosed of synthesizing a crystalline material comprising a CHA framework type molecular sieve and having a composition involving the molar relationship: (n)X2O3:YO2, wherein X is a trivalent ... | 07/13/2010 |
| 7741526 | Feedstock preparation of olefins for oligomerization to produce fuels A feedstock containing at least 1 wt % butenes, at least 1 wt % pentenes, at least 1 wt % hexenes, at least 10 wppm C4 dienes, at least 10 wppm C5 dienes, and optionally at least 10 wppm C6 dienes can be selectively hydrogenated over... | 06/22/2010 |
| 7737316 | Method of flocculation and formulation of crystalline materials A method for determining an amount of flocculant effective to recover a molecular sieve crystalline product that comprises the steps of (a) preparing a molecular sieve crystalline product mixture; (b) separating the molecular sieve crystalline product mixture into a... | 06/15/2010 |
| 7732537 | Methods addressing aging in flocculated molecular sieve catalysts for hydrocarbon conversion processes One aspect of the invention relates to a method for formulating a molecular sieve catalyst composition, the method comprising the steps of: (a) providing a synthesized molecular sieve having been recovered in the presence of a flocculant; (b) thermally treating the ... | 06/08/2010 |
| 7713409 | Method for reducing the level of elemental sulfur and total sulfur in hydrocarbon streams A method for reducing the level of elemental sulfur from sulfur-containing hydrocarbon streams as well as reducing the level of total sulfur in such streams. Preferred hydrocarbon streams include fuel streams such as naphtha streams that are transported through a pi... | 05/11/2010 |
| 7700816 | Catalytic conversion of oxygenates to olefins An oxygenate conversion catalyst useful in the conversion of oxygenates such as methanol to olefinic products may be improved by the use of a catalyst combination based on a molecular sieve in combination with a co-catalyst comprising a mixed metal oxide composition... | 04/20/2010 |
| 7692049 | Hydrocarbon compositions useful for producing fuels and methods of producing the same A hydrocarbon composition comprises at least 90 wt. % of C9 to C20 non-normal olefins, non-normal saturates or combinations thereof based on the weight of the hydrocarbon composition, at least 2 wt. % and not greater than 25 wt. % of C9 | 04/06/2010 |
