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| Number | Title | Issue Date |
| 8148587 | Method for producing light olefins from methanol or/and dimethyl ether The present invention provides a method for producing Lower olefin from the feed of methanol or/and dimethyl ether, characterized in that methanol or/and dimethyl ether are divided proportionally to be fed at 3 reaction zones; and the desired distribution of the ole... | 04/03/2012 |
| 7622620 | Hydrocarbon conversion process including a staggered-bypass reaction system One exemplary embodiment can include a hydrocarbon conversion process. Generally, the process includes passing a hydrocarbon stream through a hydrocarbon conversion zone comprising a series of reaction zones. Typically, the hydrocarbon conversion zone includes a sta... | 11/24/2009 |
| 7411101 | Production of alkylaromatic compounds A process for producing a monoalkylation aromatic product, such as ethylbenzene and cumene, utilizing an alkylation reactor zone and a transalkylation zone in series or a combined alkylation and transkylation reactor zone. ... | 08/12/2008 |
| 7339086 | Process for the hydrogenation of branched olefins deriving from the dimerization of isobutene A process is described for the hydrogenation of olefinic streams containing sulfurated compounds, obtained starting from hydrocarbon cuts containing isobutene (by means of selective dimerization), characterized by fractionating said streams in one or more distillati... | 03/04/2008 |
| 7326820 | System and method for purifying heptane Removing impurities from a heptane stream by contacting the heptane stream with an acidic catalyst, wherein the contacting reduces a concentration of one or more close boiling impurities, one or more olefins, or both. The impurities are isomerized via contact with t... | 02/05/2008 |
| 7320745 | Energy efficient method for exothermic reactions An energy efficient process scheme for a highly exothermic reaction-distillation system in which the reactor is external to the distillation column and the feed to the reactor is a mixture of at least one liquid product stream from the distillation column with or wi... | 01/22/2008 |
| 7227047 | Butadiene and isobutylene removal from olefinic streams A process is disclosed for selectively removing isobutene and butadiene from a stream, the process comprising contacting the stream with a hydrogenation catalyst to hydrogenate butadiene and an oligomerization catalyst to oligomerize isobutene. ... | 06/05/2007 |
| 7208648 | Minimizing corrosion in a methanol-to-olefin effluent processing system The present invention is directed toward reducing corrosion in a methanol-to-olefin (MTO) effluent processing system, and particularly in the condensate removal system thereof, by injecting a neutralization agent into one or more target regions of the MTO effluent p... | 04/24/2007 |
| 7161051 | Integration of a methanol synthesis system with a methanol to olefin reaction system Disclosed is a process for producing light olefins in an integrated methanol synthesis/MTO reaction system. The integrated system implements a shared separation system for separating oxygenate components from the respective methanol synthesis system and MTO reaction... | 01/09/2007 |
| 7151198 | Integration of a methanol synthesis system with a methanol to olefin reaction system Disclosed is a process for producing light olefins in an integrated methanol synthesis/MTO reaction system. The integrated system implements a shared separation system for separating oxygenate components from the respective methanol synthesis system and MTO reaction... | 12/19/2006 |
| 7128767 | Method to upgrade low rank coal stocks The ash content of raw coals, lignite, and other carbonaceous materials is reduced by leaching the high-ash material with an aqueous acidic waste product produced by a Fischer-Tropsch reaction. The acidic aqueous waste is mixed with coal and process conditions are d... | 10/31/2006 |
| 7102043 | Process for synthesizing diisopropylbenzene This invention relates to a process for synthesizing para-diisopropylbenzene utilizing only cumene and propylene as raw materials. This synthesis technique offers the advantage of eliminating benzene as a raw material used in the process. The elimination of benzene ... | 09/05/2006 |
| RE39222 | Process for preparing 2,6-dialkylnaphthalene A process for producing 2,6-dialkylnaphthalene from a hydrocarbon feedstock that contains at least one component selected from the group consisting of dialkylnaphthalene isomers, monoalkylnaphthalene isomers, polyalkylnaphthalenes, and naphthalene, is provided that ... | 08/01/2006 |
| 7030284 | Method and reactor system for converting oxygenate contaminants in an MTO reactor system product effluent to hydrocarbons Disclosed is a method and reactor system for converting oxygenate and/or olefin contaminants in a methanol to olefin reactor system product effluent to hydrocarbons, including paraffin compounds, preferably over a sulphided catalyst of the type Nickel or Cobalt comb... | 04/18/2006 |
| 7002052 | Integrated process for producing an alkenyl-substituted aromatic compound An integrated process of preparing a C2-5 alkenyl-substituted aromatic compound using a C6-12 aromatic compound and a C2-5 alkane as raw materials. The process involves feeding a C2-5 alkane, for example ethane, and a C | 02/21/2006 |
| 6953871 | Processes for producing poly-ethynyl-substituted aromatic compound A process for preparing a poly-ethynyl-substituted aromatic compound characterized by reacting a halogenated benzene with an ethynylzinc halide; a process for preparing a poly-ethynyl-substituted aromatic compound characterized by using a halogenated benzene having ... | 10/11/2005 |
| 6916630 | Method and spiral bioreactor for processing feedstocks A potential energy field flow bioreactor for processing a reagent includes a flow pathway, preferably in the form of a spiral, through which pathway is flowed reactant particles and at least one initial reagent adapted to react therewith. The reaction generates an e... | 07/12/2005 |
| 6897345 | Process for the production of hydrocarbons with a high octane number starting from mixtures of n-butane/isobutane such as field butanes A process is described for the production of hydrocarbons with a high octane number starting from mixtures essentially consisting of n-butane and isobutane (such as for example field butanes) comprising a skeleton isomerization section, a dehydrogenation section of ... | 05/24/2005 |
| 6846965 | Method for the oligomerization of C2 C8-olefins C2-C8-olefins are oligomerized in a process in which a stream of an olefin-containing hydrocarbon mixture is passed over a heterogeneous, nickel-containing oligomerization catalyst in n successive adiabatically operated reaction zones, where nā... | 01/25/2005 |
| 6660896 | Isomerization of ethylbenzene and xylenes In a process for isomerizing a feed comprising ethylbenzene and a mixture of xylene isomers, the feed is first contacted under xylene isomerization conditions with a first catalyst composition to produce an intermediate product having a higher para-xylene... | 12/09/2003 |
| 6583186 | Method for upgrading Fischer-Tropsch wax using split-feed hydrocracking/hydrotreating The present invention is directed to a method for hydroprocessing Fischer-Tropsch products. The invention in particular relates to an integrated method for producing liquid fuels from a hydrocarbon stream provided by Fischer-Tropsch synthesis. The method ... | 06/24/2003 |
| 6503465 | Two-stage isomerization of saturated C6 hydrocarbons A process and/or system is provided for isomerizing a hydrocarbon feedstock comprising saturated C6 hydrocarbons by contacting the hydrocarbon feedstock, in the presence of hydrogen and optionally a chloride, with a first isomerization catalyst... | 01/07/2003 |
| 6339179 | Production of alkyl aromatics by passing transalkylation effluent to alkylation zone and to product recovery zone A process for producing alkyl aromatics using a transalkylation reaction zone and an alkylation reaction zone is disclosed. One portion of the transalkylation reaction zone effluent passes to an alkylation reaction zone where an aromatic substrate is alky... | 01/15/2002 |
| 6303839 | Process for producing polymer grade olefins The present invention relates to a process for the production of light olefins comprising olefins having from 2 to 4 carbon atoms per molecule from an oxygenate feedstock. The process comprises passing the oxygenate feedstock to an oxygenate conversion zo... | 10/16/2001 |
| 6248929 | Rubber process oil and production process thereof Disclosed is a rubber process oil in which the content of polycyclic aromatics (PCAs) as determined by the IP 346 method is less than 3% by mass and which is rich In aromatic hydrocarbons, and a method for producing the same. The aniline point of the rubb... | 06/19/2001 |
| 6218589 | Method for improving the operation of a propane-propylene splitter A method for improving the operation of a propane-propylene splitter in a process for the dehydrogenation of propane wherein the propane is dehydrogenated to produce a stream containing propylene and trace quantities of methyl acetylene and propadiene com... | 04/17/2001 |
| 6194626 | Process for the purification of a diolefin hydrocarbon stream from a naphtha steam cracker A cyclic process for the purification of a diolefin hydrocarbon stream produced in a naphtha steam cracker to produce a high quality diolefin hydrocarbon stream having extremely low levels of acetylene over an extended period because of the ability to rea... | 02/27/2001 |
| 6121501 | Process for preparing 2,6-dialkylnaphthalene A process for producing 2,6-dialkylnaphthalene from a hydrocarbon feedstock that contains at least one component selected from the group consisting of dialkylnaphthalene isomers, monoalkylnaphthalene isomers, polyalkylnaphthalenes, and naphthalene, is pro... | 09/19/2000 |
| 6096935 | Production of alkyl aromatics by passing transalkylation effluent to alkylation zone A process for producing alkyl aromatics using a transalkylation reaction zone and an alkylation reaction zone is disclosed. The transalkylation reaction zone effluent passes to the alkylation reaction zone where aromatics in the transalkylation reaction z... | 08/01/2000 |
| 6018086 | Process for preparing 2,6-dialkylnaphthalene The present invention relates to a process of preparing dialkylnaphthylenes and polyalkylenenaphthyleneates.... | 01/25/2000 |
| 5998684 | Recovery process for wet aromatic alkylation and dry aromatic transalkylation A separation arrangement for a cumene process that operates with a relatively wet feed to an alkylation zone and relatively dry feed to a transalkylation zone reduces utilities and capital expenses for the separation and recycle of distinct wet and dry co... | 12/07/1999 |
| 5990369 | Process for producing light olefins The present invention relates to a process for the production of light olefins comprising olefins having from 2 to 4 carbon atoms per molecule from an oxygenate feedstock. The process comprises passing the oxygenate feedstock to an oxygenate conversion zo... | 11/23/1999 |
| 5955640 | Integrated process for the production of butene-1 Integrated process for the production of butene-1 which comprises feeding a C4 hydrocarbon stream to a separation unit of butene-1 and recycling the remaining stream to the same unit after treatment in a bond isomerization section to convert th... | 09/21/1999 |
| 5914433 | Process for producing polymer grade olefins The present invention relates to a process for the production of light olefins comprising olefins having from 2 to 4 carbon atoms per molecule from an oxygenate feedstock. The process comprises passing the oxygenate feedstock to an oxygenate conversion zo... | 06/22/1999 |
| 5895831 | Solid catalyst alkylation process A process for the production of motor fuel alkylate by reacting an alkene hydrocarbon, an alkane hydrocarbon and a hydrogen halide with a solid alkylation catalyst disposed in swing beds. The spent solid alkylation catalyst is regenerated in a highly inte... | 04/20/1999 |
| 5856607 | Process for production of ethylbenzene frome dilute ethylene streams The present invention relates to a process for the production of ethylbenzene from dilute ethylene streams, especially from mixtures of ethane and ethylene where such mixture is the offgas from a refinery operation, such as a fluid catalytic cracking (FCC... | 01/05/1999 |
| 5847253 | Alkylation-transalkylation process using stripping to produce a dry transalkylation feed A process for the production of alkylaromatic hydrocarbons that operates with a high water content in an alkylation zone and a low water content in a transalkylation zone is disclosed. An aromatic feed and an acyclic feed are first passed through the alky... | 12/08/1998 |
| 5811621 | Process for recovering ethylene from an olefin stream produced by a methanol to olefin reaction A polymerizable grade of ethylene is recovered from an olefin-containing composition, prepared by the conversion of a methoxy compound to olefins, by a process which significantly reduces the requirements of the demethanizer distillation column through wh... | 09/22/1998 |
| 5789643 | Process for oligomerizing I-butene comprising hydroisomerizing portion of condensate and recycling the hydroisomerate to fractionation The i-butene present in a C4 raffinate I is subjected in a first step to a first hydroisomerization. The hydroisomerization product is subjected to fractional distillation, with essentially 2-butene and n-butane being obtained as bottom product... | 08/04/1998 |
| 5770042 | Upgrading of cyclic naphthas A process combination is disclosed to selectively upgrade naphtha to obtain an isoparaffin-rich product for blending into gasoline. A naphtha feedstock is subjected to ring cleavage to convert naphthenes to paraffins using a nonacidic catalyst followed by... | 06/23/1998 |
