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| Number | Title | Issue Date |
| 7674945 | Process for alkylation of an aromatic hydrocarbon or isoalkane with an olefin over the catalysis of a solid acid The present invention discloses a process for alkylation of an aromatic hydrocarbon or isoalkane with an olefin over the catalysis of a solid acid, comprising contacting a reaction material containing an aromatic hydrocarbon or C4-C6 isoalkane,... | 03/09/2010 |
| 7435864 | Method and device for the production of alkylates Disclosed is a device for the production of alkylate(s) by sulfuric acid alkylation of at least one isoparaffin such as isobutane with at least one olefin, such as butylenes. The device includes a mixing chamber for preparing a mixture of the isoparaffin with recycl... | 10/14/2008 |
| 7326819 | High-activity isomerization catalyst and process A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component of... | 02/05/2008 |
| 7256152 | Composition of catalyst and solvent and catalysis processes using this composition A composition defined: either as comprising at least one Broensted acid, designated HB, dissolved in a liquid medium with an ionic nature of general formula Q+A−, in which Q+ represents an organic cation and A− represents an an... | 08/14/2007 |
| 7208646 | Selective hydrogenation of butadiene A process for the selective hydrogenation of dienes in mixed streams of olefin containing hydrocarbons, such as butadiene in a mixed C4 stream with minimum loss of monoolefins is disclosed wherein the reactor is operated at conditions which induce pulse f... | 04/24/2007 |
| 7199068 | Reactive distillation alkylation process including in situ catalyst regeneration A unified process which couples a unique in situ catalyst regeneration process with a continuous reactive distillation under pressure for the alkylation of light aromatic hydrocarbons such as benzene with C2–C30 olefins using a solid acid alk... | 04/03/2007 |
| 7126038 | Method of removing entrained sulfuric acid from alkylate An improvement in the alkylation of olefins with isoalkanes in the presence of sulfuric acid wherein the sulfuric acid is removed from the product by a mechanical coalescer means prior to fractionation. No water wash or caustic treatment is required. Any sulfonates ... | 10/24/2006 |
| 7119244 | Method of removing organic sulfur compounds from alkylate A process for the removal of organic sulfur compounds, primarily oxygenated organic compounds, such as sulfates and sulfonic esters from a hydrocarbon liquid is disclosed which comprises contacting the hydrocarbon liquid with a coalescer comprising a mesh material w... | 10/10/2006 |
| 7041866 | Solid-acid isomerization catalyst and process A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component co... | 05/09/2006 |
| 7022889 | Isomerization process using novel catalyst A process for the isomerization of a feedstream comprising C5–C6 hydrocarbons where the process involves charging hydrogen and a feedstream comprising at least normal C5–C6 hydrocarbons into an isomerization zone and c... | 04/04/2006 |
| 7015175 | High-activity isomerization catalyst and process A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component of... | 03/21/2006 |
| 6979396 | Combination reforming and isomerization process A reforming and isomerization process has been developed. A reforming feedstream is charged to a reforming zone containing a reforming catalyst and operating at reforming conditions to generate a reforming zone effluent. Hydrogen and an isomerization feedstream is c... | 12/27/2005 |
| 6927188 | High-activity isomerization catalyst and process A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component of... | 08/09/2005 |
| 6924407 | Pressure-tuned solid catalyzed heterogeneous chemical reactions Improved methods for conducting solid acid-catalyzed, near- or supercritical heterogeneous chemical reactions (e.g., alkylation reactions) are provided which give enhanced product yields and permit longer processing runs. The preferred reactions of the invention are... | 08/02/2005 |
| 6852902 | Method of removing entrained sulfuric acid from alkylate An improvement in the alkylation of olefins with isoalkanes in the presence of sulfuric acid wherein the sulfuric acid is removed from the product by a mechanical coalescer means prior to fractionation. No water wash or caustic treatment is required. Any sulfonates ... | 02/08/2005 |
| 6774275 | Pulse flow reaction A method of operating a multi-phase downflow reactor so as to induce a pulsing flow regime is disclosed. The pulse may be induced by increasing the gas rate while maintaining the liquid rate until a pressure drop sufficient to induce the pulse flow is achieved. The ... | 08/10/2004 |
| 6296757 | Synthetic diesel fuel and process for its production Diesel fuels or blending stocks having excellent lubricity, oxidative stability and high cetane number are produced from non-shifting Fischer-Tropsch processes by separating the Fischer-Tropsch product into a lighter and heavier fractions, e.g., at about ... | 10/02/2001 |
| 5986158 | Process for alkylating hydrocarbons The invention pertains to a process for alkylating hydrocarbons in which an alkylatable organic compound is reacted with an alkylation agent to form an alkylate in the presence of a catalyst comprising a hydrogenating function and a solid acid constituent... | 11/16/1999 |
| 5969206 | Reverse emulsion aliphatic alkylation process with catalyst-olefin premixing The invention concerns a process for the alkylation of at least one isoaffin selected from the group formed by isobutane and isopentane by at least one olefin containing 2 to 6 carbon atoms per molecule in the presence of a liquid acid catalyst, the proce... | 10/19/1999 |
| 5942654 | Process for the removal of corrosive compounds from a fluid stream A process for the removal of corrosive compounds from a fluid stream, comprising the steps of: in an extraction column with an outer steel tube and an inner tube of corrosion resistant material having an open inlet end and an open outlet end and being arr... | 08/24/1999 |
| 5925801 | Process for preparing high-octane gasoline components, and a catalyst A process for preparing high-octane gasoline components consists in that a feed stock, composed of isobutane and olefins, preferably butylenes, in a molar ratio between 1 and 40, is contacted at temperatures of from about 50 to about 160° C. and at press... | 07/20/1999 |
| 5888920 | Integrated process using in situ regenerated sulfuric acid as catalyst This invention discloses an integrated process of alkylation of olefins and regeneration of spent sulfuric acid. The alkylation of olefins may be replaced by nitration of toluene or by chlor-alkali process. The sulfuric acid is used as a catalyst or a abs... | 03/30/1999 |
| 5849965 | Multistage alkylation process In a multistage process, a relatively unreactive paraffinic substrate is alkylated in a primary stage while a more reactive aromatic substrate is alkylated in a secondary stage wherein at least a portion of the effluent from the primary stage is used as a... | 12/15/1998 |
| 5817908 | Staged alkylation process A staged alkylation process in the presence of an acid catalyst in a fixed bed of particulate contact material in an alkylation reactor is disclosed.... | 10/06/1998 |
| 5811626 | Paraffin alkylation process Disclosed is a process for the alkylation of an isoparaffin by an olefin in the presence of a catalyst. In the process, a portion of the isoparaffin recovered after extraction from the reaction zone (R) is recycled to the reaction zone and the feed is per... | 09/22/1998 |
| 5811627 | Alkylation reactions Improved acid catalyzed alkylation reactions occur for the addition of a hydrocarbyl reactant to an alkene, by the optimized addition of an oxidizing agent, such as a peroxide, molecular oxygen, ozone, peracid, and one or more of the peroxide, molecular o... | 09/22/1998 |
| 5750818 | Alkylation process A process for cooling unreacted hydrocarbon substrate that is recycled to an alkylation reactor and for minimizing the concentration of lower boiling hydrocarbons in such recycle.... | 05/12/1998 |
| 5731256 | Alkylation catalyst for C4 -C5 isoparaffins using at least one C2 -C6 olefin The present invention concerns a catalyst comprising a porous organic or mineral support, preferably silica, and an acidic phase containing B(OSO2 CF3)3 and at least one acid selected from the group formed by sulphuric aci... | 03/24/1998 |
| 5723715 | Isoparaffin-olefin alkylation A novel alkylation catalyst is described which is used in processes for alkylating olefin hydrocarbons with isoparaffin hydrocarbons to produce high octane alkylate products suitable for use as a blending component of gasoline motor fuel. The novel cataly... | 03/03/1998 |
| 5689030 | Method for prolonging the life of alkylation product stream defluorinator beds A method for prolonging the life of a defluorinator material contained within an alkylation process product stream defluorination zone used to remove organic fluorides from a product stream produced by an alkylation process that utilizes an alkylation cat... | 11/18/1997 |
| 5663474 | Alkylation process using hydrogen fluoride-containing alkylation catalysts This invention relates to catalysts for alkylation reactions and their preparation. More particularly, the invention relates to an alkylation process using a hydrogen fluoride-containing alkylation catalyst, which catalyst may be safely and easily handled... | 09/02/1997 |
| 5659105 | Process for the alkylation of aliphatic hydrocarbons with olefins A process for the alkylation of aliphatic hydrocarbons with olefins catalyzed by a silica-based material, characterised in that the surface Si--OH groups of said silica are esterified with a fluoroalkylsulphonic acid of formula CF3 (CF2 | 08/19/1997 |
| 5646086 | Alkylation catalyst for C4 -C5 isoparaffins using at least one C2 -C6 olefin A catalyst comprising a porous organic or mineral support, preferably silica, and an acidic phase containing B(OSO2 CF3)3 and at least one acid selected from the group formed by sulphuric acid (H2 SO4... | 07/08/1997 |
| 5625114 | Process for the recovery of spent acid catalyst A process for the recovery of a sulphonic acid catalyst from an aqueous extract of an alkylation effluent stream comprising the steps of evaporating the extract to obtain a hydrate of the sulphonic acid catalyst; reacting the hydrate with an olefin containing hydro... | 04/29/1997 |
| 5625113 | Isoparaffin/olefin alkylation A process is disclosed for alkylating an isoparaffin with an olefin comprising the steps of: (a) reacting an isoparaffin having from 4 to 8 carbon atoms with an olefin having from 2 to 12 carbon atoms in a first alkylation reaction stage at temperature fr... | 04/29/1997 |
| 5574201 | Alkylation process The alkylation of C2 -C12 alkanes (preferably isobutane) with C2 -C12 alkenes (preferably butene-2), in the presence of trifluoromethanesulfonic acid on a solid inorganic material as catalyst, is carried out wit... | 11/12/1996 |
| 5498820 | Alkylation process Process for the alkylation of a hydrocarbon feedstock with an olefinic alkylating agent comprising the steps of contacting the hydrocarbon feedstock and the olefinic alkylating agent with a fluorinated alkoxy alkane sulphonic acid catalyst for a sufficien... | 03/12/1996 |
| 5493067 | Solid superacid alkylation catalyst compositions and alkylation method using the same Isoparaffins and olefins are alkylated by contact with a solid superacid such as sulfated zirconia optionally containing added metals, and containing added heteropolyacids (HPA's) or polyoxoanions (POA's). The presence of HPA's or POA's in the solid super... | 02/20/1996 |
| 5491278 | Alkylation process using solid superacid catalyst liquid phase Isoparaffins and olefins are alkylated in the liquid phase by contact with a solid superacid such as sulfated zirconia containing heteropolyacids or polyoxoanions. High octane number blending components for motor fuel and other valuable products are obtai... | 02/13/1996 |
| 5489728 | Catalyst for alkylation of C4 -C5 isoparaffin by at least one C3 -C6 olefin The present invention relates to a catalyst comprising silica and an acid phase comprising sulphuric acid and the compound HB(HSO4)4, the silica having been impregnated by said acid phase, said catalyst being such that is consists es... | 02/06/1996 |
