Patent application number | Description | Published |
20090069607 | METHOD FOR THE PRODUCTION OF DIMETHYL ETHER - A process for the production of dialkyl ether, the process including: feeding a stream comprising an alkyl alcohol to a distillation column reactor system; concurrently in the distillation column reactor system: i) contacting the alkyl alcohol with a catalytic distillation structure in a distillation reaction zone thereby catalytically reacting at least a portion of the alkyl alcohol to form a corresponding dialkyl ether and water; and ii) fractionating the resulting dialkyl ether from the water; operating the distillation column reactor system to obtain substantially complete conversion of the alkyl alcohol to form the corresponding dialkyl ether and water; recovering the dialkyl ether from the distillation column reactor as an overheads fraction; recovering the water from the distillation column reactor as a bottoms fraction. | 03-12-2009 |
20090076312 | PROCESS FOR THE CONVERSION OF TERTIARY BUTYL ALCOHOL TO ETHYL TERTIARY BUTYL ETHER - A process for the conversion of tertiary butyl alcohol to ethyl tertiary butyl ether, including: dehydrating tertiary butyl alcohol to form a product stream comprising isobutylene and water; separating the product stream to form an isobutylene-rich fraction and a water-rich fraction; separating the water-rich fraction to recover a hydrocarbon fraction and a water fraction having less than 1 ppm hydrocarbon content; reacting isobutylene in the isobutylene-rich fraction with ethanol to form a reaction product comprising ethyl tertiary butyl ether; separating the reaction product to recover unreacted ethanol and an ethyl tertiary butyl ether stream; and recycling at least a portion of the unreacted ethanol to the reacting; wherein the ethyl tertiary butyl ether stream comprises at least 99 weight percent ethyl tertiary butyl ether. | 03-19-2009 |
20090105513 | PARAFFIN ALKYLATION PROCESS - A process for the alkylation of isobutane is disclosed wherein isobutane is fed to two separate alkylation systems. The effluent from the first alkylation system is fed to an interim debutanizer where the C | 04-23-2009 |
20090198091 | H2SO4 ALKYLATION BY CONVERSION OF OLEFIN FEED TO OLIGOMERS AND SULFATE ESTERS - A process for treating an alkylation feedstock comprising olefins, n-alkanes, and iso-alkanes, the process including: contacting at least a portion of the alkylation feedstock with sulfuric acid in a reaction zone under conditions to form sulfate esters of the olefins; separating the n-alkanes and the iso-alkanes from the sulfuric acid and the sulfate esters; recovering the n-alkanes and the iso-alkanes in a first product stream; and recovering the sulfate esters in a second product stream; wherein the sulfuric acid has a strength titrating as below 75 weight percent H | 08-06-2009 |
20090200205 | SULFUR EXTRACTION FROM STRAIGHT RUN GASOLINE - A process for reducing the sulfur content of a gasoline fraction comprising one or more organic sulfur compounds including mercaptans, thiophenes, and mono- and di-sulfides, the process including: contacting a gasoline fraction having an initial organic sulfur content with a sulfuric acid-rich composition to extract organic sulfur compounds from the gasoline fraction and produce a gasoline fraction having reduced sulfur content and a sulfuric acid fraction having increased organic sulfur content; and separating the gasoline fraction having reduced organic sulfur content and the sulfuric acid-rich fraction having increased organic sulfur content. | 08-13-2009 |
20090306448 | GASOLINE ALKYLATE RVP CONTROL - A process for producing an alkylate having a low Reid vapor pressure, the process including: contacting a C | 12-10-2009 |
20100044273 | REFORMATE BENZENE REDUCTION VIA TRANSALKYLATION - A process for reducing benzene content in a reformate stream, including: fractionating a full range reformate comprising benzene, C | 02-25-2010 |
20100048966 | ALKYLATION SLURRY REACTOR - A process for alkylation of benzene, including: feeding benzene, a polyalkylate, and a catalyst to a reactor comprising a first and a second reaction zone; reacting the benzene and the polyalkylate in the first reaction zone under transalkylation conditions to form a monoalkylate product; feeding a C | 02-25-2010 |
20100048970 | REFORMATE BENZENE REDUCTION VIA ALKYLATION - A process for reformate benzene reduction, the process including: feeding a light reformate fraction, an olefin feed, and an alkylation catalyst to an alkylation reaction zone; contacting the light reformate fraction and the olefin feed in the presence of the alkylation catalyst in the alkylation reaction zone to convert at least a portion of the benzene and the olefin to a monoalkylate; recovering a catalyst fraction from an alkylation reaction zone effluent; and recovering a light reformate product having a reduced benzene content. | 02-25-2010 |
20100063334 | PROCESS FOR ULTRA LOW BENZENE REFORMATE USING CATALYTIC DISTILLATION - A process for reducing the concentration of benzene in a hydrocarbon stream, the process including: fractionating a reformate to form a benzene concentrate fraction comprising benzene and other C | 03-11-2010 |
20100076241 | PROCESS FOR THE ALKYLATION OF ISOBUTANE WITH DILUTE PROPYLENE - A process for alkylation of propylene, the process including: contacting a stream comprising propylene and propane with sulfuric acid in a first reaction zone under conditions to form propylene sulfate esters; contacting the propylene sulfate esters with isoparaffin and sulfuric acid in an alkylation reaction zone under conditions to react the propylene sulfate esters and the isoparaffin to form a reactor effluent comprising an acid phase and a hydrocarbon phase comprising unreacted isoparaffin and alkylate product; separating the hydrocarbon phase from the sulfuric acid; separating the hydrocarbon phase to form a fraction comprising unreacted isoparaffin and a fraction comprising the alkylate product. | 03-25-2010 |
20100081854 | PREPARATION OF ALKYLATION FEED - A process for treating an alkylation feedstock comprising olefins, n-alkanes, iso-alkanes, and impurities including one or more of butadiene, oxygenates, nitrogen-containing compounds, and sulfur-containing compounds, the process including: contacting an alkylation feedstock containing at least one of oxygenates and nitrogen-containing compounds with water to produce a hydrocarbon fraction having a reduced concentration of the at least one of oxygenates and nitrogen-containing compounds and an aqueous fraction comprising at least a portion of the at least one of oxygenates and nitrogen-containing compounds; separating water from the hydrocarbon fraction having a reduced concentration to produce a hydrocarbon fraction having a reduced water content; contacting the hydrocarbon fraction having a reduced water content with an oligomerization catalyst in a first oligomerization reaction zone under oligomerization conditions to react at least a portion of the olefins to form a reactor effluent comprising olefin oligomers; and feeding at least a portion of the reactor effluent to an alkylation unit. | 04-01-2010 |
20100179362 | SELECTIVATED ISOOLEFIN DIMERIZATION USING METALIZED RESINS - A process for the dimerization of isoolefins, including: contacting an isoolefin with a solid catalyst composition passivated with at least one of an ether, an alcohol, and water; wherein the solid catalyst composition comprises at least one of a solid phosphoric acid catalyst and a resin of a macroporous matrix of polyvinyl aromatic compound crosslinked with a divinyl compound and having thereon from about 3 to 5 milli equivalents of sulfonic acid groups per gram of dry resin; and wherein at least 50% to less than 100% of acid groups in the solid catalyst composition are neutralized with a metal of Al, Fe, Zn, Cu, Ni, or mixtures thereof. The catalyst may be metalized prior to placement in a reactor or may be metalized in situ. | 07-15-2010 |