Patent application number | Description | Published |
20100312029 | CONTINUOUS PROCESS FOR OXYGEN-FREE CONVERSION OF METHANE - A method for dehydroaromatizing methane by contacting a feedstream that contains methane, in a circulating fluid bed reactor/regenerator, with a catalyst and under conditions sufficient to dehydroaromatize methane and produce at least one liquid aromatic compound such as benzene, toluene or naphthalene and hydrogenated products such as cyclohexane and decahydronaphthalene. The method may also be used to produce hydrogen. The feedstream may be a natural gas feedstock. The method may include one step and two step catalyst regeneration. | 12-09-2010 |
20120101320 | PROCESS TO PREPARE OLEFINS FROM ALIPHATIC ALCOHOLS - A process to prepare an olefin from its corresponding alcohol is improved by reacting, under reaction conditions including a first temperature, an aliphatic alcohol and, optionally, diluent water, to form a reaction product including at least a dialkyl ether. The product is then reacted again, under higher temperature to complete the dehydration of the dialkyl ether to the desired olefin. This process is particularly suitable to prepare ethene from ethyl alcohol. The stepped temperature scheme serves to reduce the formation of byproduct aldehydes, which in turn reduces coke formation, fouling, and the need to handle large amounts of water, thereby lowering energy and capital costs. | 04-26-2012 |
20120330080 | CATALYST COMPOSITION FOR DIRECT CONVERSION OF ETHANOL TO PROPYLENE - A process to prepare propylene showing desirably increased selectivity comprises contacting, at an elevated temperature, ethanol and a rhenium oxide-modified ZSM-5 zeolite catalyst, under conditions suitable to form propylene. The rhenium oxide-modified ZSM-5 zeolite catalyst may be prepared by impregnating, in an aqueous or organic medium, a ZSM-5 zeolite with a rhenium source, under conditions suitable to form a catalyst precursor, and calcining the catalyst precursor under conditions suitable to form a rhenium oxide-modified ZSM-5 zeolite catalyst. | 12-27-2012 |
20130012748 | PROCESS TO INCREASE SELECTIVITY TO ETHYLENE IN OXYGENATES-TO-OLEFINS CONVERSIONS - A process for converting an oxygenate-containing feedstock to a product comprising olefins comprises including in the oxygenate-containing feedstock an amount of ammonia. The presence of the ammonia increases the product's ratio of ethylene to propylene. | 01-10-2013 |
20140200385 | REACTIVATING PROPANE DEHYDROGENATION CATALYST - Increase propane dehydrogenation activity of a partially deactivated dehydrogenation catalyst by heating the partially deactivated catalyst to a temperature of at least | 07-17-2014 |
20150139890 | PROCESS FOR SYNTHESIS OF MOLYBDENUM SULFIDE-BASED CATALYSTS - A process for preparing a molybdenum sulfide-based catalyst comprises drying a precipitated molybdenum sulfide-based catalyst precursor, for example, a wet filter cake, such that a particulate catalyst precursor, containing from 12 to 15 percent by weight water, is formed. The particulate catalyst precursor is desirably in the form of free-flowing particles. The particulate catalyst precursor is then auto-reduced. A rotary furnace that subjects the catalyst precursor to at least two zones having distinct temperatures may be conveniently used for drying, auto-reduction, or both. The staged drying and auto-reduction steps reduce the tendency of the precursor to self-heat, which is undesirable because it reduces both the activity and selectivity of the final catalyst. | 05-21-2015 |
Patent application number | Description | Published |
20100092381 | REACTOR SYSTEM AND METHOD THEREFORE - A reactor system includes a fluidized bed reactor with a fluidized zone having sorbent particles and catalyst particles. The sorbent particles are sized to become entrained in a product stream from the fluidized zone and the catalyst particles are sized to gravimetrically stay within the fluidized zone. | 04-15-2010 |
20100092382 | GAS GENERATOR AND METHOD THEREFOR - A gas generator includes a high pressure gas-generation system that is capable of generating a product gas stream at a non-ambient, elevated nominal pressure. A thermal swing absorber has a first configuration and a second configuration relative to being connected with the product gas stream. In the first configuration, the thermal swing absorber is connected with the high pressure gas-generation system to receive the product gas stream and remove a constituent gas from the stream. In the second configuration, the thermal swing absorber is disconnected from the product gas stream and releases the constituent gas at a pressure that is substantially equal to the elevated nominal pressure. In the second configuration, the thermal swing absorber is an input source to provide the released constituent gas into the high pressure gas-generation system, which permits more efficient use of materials within the system. | 04-15-2010 |
20100307389 | REACTOR SYSTEM AND SOLID FUEL COMPOSITE THEREFOR - A reactor system includes a fluidized-bed. A fuel and a sulfur absorbent material are eluted through the fluidized-bed. The reactor system may include a heat exchanger having a heat-exchanging portion within a heating zone of the reactor that is hermetically sealed from the heating zone. The reactor may include loose particles of an inert bed material for forming the fluidized-bed. A feed system may be provided to inject a solid fuel composite that includes a mixture of a solid, carbonaceous fuel and a solid reagent into the reactor. | 12-09-2010 |
20130020080 | METHOD FOR IN SITU EXTRACTION OF HYDROCARBON MATERIALS - A method for in situ extraction of hydrocarbon materials in a subsurface region includes increasing permeability of a low permeability hydrocarbon-containing subsurface region to create a first well sub-region and a second well sub-region vertically below the first well sub-region. The first well sub-region is heated to extract liquid hydrocarbon materials that flow to the second well sub-region. The liquid hydrocarbon materials are then transported from the second well sub-region. | 01-24-2013 |