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| Number | Title | Issue Date |
| 7371918 | Alkylation process with settler effluent recycle A system and/or process for increasing the isobutane to olefin ratio in an alkylation process/system is disclosed. The system and/or process includes provisions for charging a portion of the settler effluent as a feed to at least one reaction zone downflow from the ... | 05/13/2008 |
| 7176340 | Continuous process for the alkylation of hydrocarbons A continuous alkylation process performed in an apparatus comprising a series of at least two zone A reactors and a series of at least two zone B reactors, in which the zone A reactors and the zone B reactors cycle between alkylation mode and mild regeneration mode,... | 02/13/2007 |
| 7166556 | 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 catalyst comprise... | 01/23/2007 |
| 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 |
| 7119243 | Alkylation process with efficient effluent refrigeration An alkylation process in which a recycle stream is cooled by heat exchange with the alkylation reactor effluent is disclosed. ... | 10/10/2006 |
| 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 |
| 7087803 | Method for the recovery of perfluorinated sulphonic acid Method for the recovery of a perfluorinated sulphonic acid from a viscous organic residue by aqueous extraction of the acid from the residue in presence of a solvent containing aromatic compounds. ... | 08/08/2006 |
| 6995295 | Alkylaromatics production A process is described for producing an alkylaromatic compound by reacting an alkylatable aromatic compound with a feed comprising an alkene and an alkane in a multistage reaction system comprising at least first and second series-connected alkylation reaction zones... | 02/07/2006 |
| 6943276 | Alkylation process with efficient effluent refrigeration An alkylation process in which a recycle stream is cooled by heat exchange with the alkylation reactor effluent is disclosed. ... | 09/13/2005 |
| 6939444 | Sulfur-bearing residue treatment system A sulfur-bearing residue treatment system is provided for the recovery of valuable organic components and the reduction of capital costs and operating costs. The treatment system involves the use of a stripping vessel in conjunction with a heating apparatus. All ele... | 09/06/2005 |
| 6891076 | Process for the recovery of perfluorinated sulphonic acids from spent acid residue Process for the recovery of perfluorinated sulphonic acid from a hydrocarbon residue, comprising the steps of (a) treating the residue with an alkyl ammonium salt of the perfluorinated sulphonic acid or a mixture of an alkyl ammonium salt of the perfluo... | 05/10/2005 |
| 6673977 | Procedure and device for the alkylation of isobutane by light olefins A procedure for the alkylation of isobutane by olefinic hydrocarbons, in which a first hydrocarbon charge (3) rich in isobutane is put in contact with a second hydrocarbon charge rich in light olefins (2), under conditions that will provoke the alkylation... | 01/06/2004 |
| 6552241 | Alkylation process A system and/or process for removing water from an alkylation catalyst mixture of an alkylation process is disclosed. The process includes passing an alkylation reaction zone effluent to a settler for separation into a hydrocarbon phase and a catalyst mix... | 04/22/2003 |
| 6486374 | Method and apparatus for alkylation using solid catalyst particles in a transport reactor A method and apparatus for alkylating an alkylation substrate with an alkylating agent in the presence of solid catalyst particles in a transport reactor is disclosed. Solid catalyst particles in the transport reactor effluent recirculate to the inlet of ... | 11/26/2002 |
| 6429349 | Co-alkylation for gasoline RVP reduction Methods and apparatus that are used in an alkylation reactor system for adding low purity isopentane to alkylation reactor feed to block formation of isopentane, resulting in high incremental isopentane conversion and minimal octane and C5+ yield loss, an... | 08/06/2002 |
| 6392114 | Solid catalyst alkylation process with regeneration section and hydrogen fractionation zone An alkylating agent alkylates an alkylation substrate in a solid catalyst alkylation process in which an alkylation reactor produces a reaction effluent and a catalyst regeneration zone produces a hydrogen-containing regeneration effluent. The alkylation ... | 05/21/2002 |
| 6281405 | Alkylation process using membrane for recovery of halides A process for recovering halides from hydrocarbon containing streams is disclosed using a sulfonated hexafluro bis-A-polysulfone membrane of polymers and copolymers having the polymer repeat unit of the formula: ##STR1## in the polymer or copolymer. This ... | 08/28/2001 |
| 5856606 | Turbulent bed solid catalyst hydrocarbon alkylation process Paraffins or other hydrocarbons are alkylated in a process featuring a reaction zone containing a pool of liquid maintained at its boiling point and containing a suspended solid catalyst, which allows the heat of reaction to vaporize a portion of the liqu... | 01/05/1999 |
| 5767335 | Method for preventing the accumulation of light ASO in the alkylation catalyst of alkylation process system Disclosed is an alkylation process which utilizes a mixture of sulfone and hydrogen fluoride as an alkylation catalyst. The process provides for the removal of light ASO from the alkylation catalyst that accumulates therein as a result of the inability to... | 06/16/1998 |
| 5763728 | Recovery and recycle of HF-amine complex in HF alkylation An HF-agent complex, such as HF-pyridine complex where the complexing agent is pyridine, is recovered and recycled from a by-product containing stream in an alkylation process using the complex by (a) selectively removing a portion of the HF from the by-p... | 06/09/1998 |
| 5744681 | Paraffin alkylation process A process for the alkylation of at least one isoparaffin by at least one olefin in the presence of at least one solid acidic catalyst, characterized in that the major portion of the olefin is initially brought into contact with the catalyst in a complexin... | 04/28/1998 |
| 5659096 | Combination of olefin oligomerization and paraffin alkylation In a process for alkylating C4 -C18 alkenes in the presence of an acid catalyst, propylene is separated from the alkenes feed, the propylene is oligomerized to oligomers containing maily propylene tetramers, and the propylene oligome... | 08/19/1997 |
| 5648588 | Method for removing sulfone and hydrogen fluoride from a hydrocarbon stream and producing a sulfone product free of hydrogen fluoride Disclosed is a process for separating sulfone and hydrogen fluoride from hydrocarbon streams containing a concentration of such compounds. An extraction solvent laden with sulfone and HF is contacted with a reversible base in order to remove the HF theref... | 07/15/1997 |
| 5639930 | Process of producing alkylates Method of producing alkylates in which an isoparaffin, olefin, a diffusing agent and a solid, acid catalyst are combined to form a three phase reaction mixture; a hydrocarbon phase containing primarily isoparaffin, a diffusing agent phase containing the d... | 06/17/1997 |
| 5565617 | Process for purifying an alkylate stream A process for purifying an alkylate feedstream is disclosed. The feedstream contains hydrogen, hydrogen chloride, C2 -C7+ alkanes, C2 -C6 alkenes and C2 -C6 alkyl halides. The process involves ... | 10/15/1996 |
| 5491277 | Mixed-phase solid bed hydrocarbon alkylation process Paraffins and other hydrocarbons are alkylated using a solid bed catalyst in a process featuring a reaction zone operated at mixed-phase conditions which allow the heat of reaction to vaporize a portion of the liquid phase feed hydrocarbon passing downwar... | 02/13/1996 |
| 5489732 | Fluidized solid bed motor fuel alkylation process Hydrocarbons are alkylated in a fluidized riser-reactor using a solid catalyst which is regenerated within the process by contact with hydrogen. The alkylation and regeneration steps are separated to prevent the admixture of hydrogen and any olefins prese... | 02/06/1996 |
| 5476983 | Reclamation of HF and recovery of gasoline from acid-soluble oil by cracking The present invention provides a method for reclaiming HF and producing valuable gasoline blending components from the conjunct polymeric byproducts (acid soluble oil or ASO) formed as a byproduct of acid-catalyzed isoparaffin-olefin alkylation comprising... | 12/19/1995 |
| 5461183 | Removal of ASO from HF/sulfolane alkylation catalyst A method for separating conjunct polymers which are formed as byproducts of acid catalyzed isoparaffin-olefin alkylation and sulfolane from a mixture containing conjunct polymers, sulfolane, and hydrofluoric acid comprising stripping HF from the spent cat... | 10/24/1995 |
| 5457258 | Recovery of spent acid catalyst from alkylation of hydrocarbons A method of recovery of acid catalyst from acid soluble oil being formed in a process for alkylation of hydrocarbons and containing valuable amounts of spent acid catalyst which method comprises, treating the acid soluble oil with hydrogen in the presence of a... | 10/10/1995 |
| 5453177 | Integrated distillate recovery process An integrated three-column process for recovering hydrocarbon distillate products from a hydroprocessing or hydrocracking reactor effluent stream and a hydrocarbon distillate product recovery train are disclosed. According to the present recovery process,... | 09/26/1995 |
| 5444175 | Process for the alkylation of paraffins The invention relates to an alkylation process, in which a charge incorporating at least one isoparaffin and at least one olefin containing 2 to 6 carbon atoms per molecule, is treated in the presence of a solid alkylation catalyst. In the process, cataly... | 08/22/1995 |
| 5362377 | Conversion of olefins by catalytic distillation Ethers suitable for use as high octane oxygenate additives for motor fuels are produced by a catalytic distillation process wherein a mixture of C4 -plus isoolefin(s) and an alcohol are recovered from a catalytic distillation zone as an overhea... | 11/08/1994 |
| 5347065 | Alkylation catalyst regeneration Disclosed is an alkylation process which ultilizes a mixture of sulfolane and hydrogen fluoride as an alkylation catalyst. The process provides for the removal of water from the alkylation catalyst that accumulates within the alkylation process system as ... | 09/13/1994 |
| 5292981 | Isoparaffin-olefin alkylation process A process for isoparaffin-olefin alkylation is provided that permits the use of solid acid catalysts which require frequent regeneration and high isoparaffin/olefin ratios. The process comprises circulating in a reactor a slurry comprising solid acid zeol... | 03/08/1994 |
| 5284993 | Alkylation catalyst regeneration Disclosed is a process for removing acid soluble oils, produced as an undesirable by-product of an acid catalyzed alkylation reaction, from a mixture containing a strong acid and methanesulfonic acid. The process includes the use of water to induce the fo... | 02/08/1994 |
| 5284990 | Method for converting a hydrogen fluoride alkylation unit to a sulfuric acid alkylation unit A method for converting HF alkylation unit to a sulfuric acid alkylation unit comprising the steps of retaining a reactor, an acid settler and a fractionation section from the HF alkylation unit and modifying at least a portion of the HF alkylation unit t... | 02/08/1994 |
| 5220094 | Alkylation recontractor with internal mixer An improved alkylation recontactor is provided, wherein the recontactor utilizes an internal mixer for mixing hydrocarbon effluent from an alkylation zone with an acid catalyst from an acid inventory vessel in fluid flow communication with the interior of... | 06/15/1993 |
| 5157195 | Control of HF alkylation propane stripper A process and apparatus for recovering propane product from HF alkylation process that is substantially free of HF acid. The invention allows for the improvement in the operation of an HF alkylation propane stripper by utilizing a bottoms recycle stream.... | 10/20/1992 |
| 5120897 | Isoparaffin/olefin alkylation The present invention provides a Lewis acid-catalyzed isoparaffin/olefin alkylation process in which acid consumption and energy costs are decreased by employing an acid sorption stage to separate the Lewis acid catalyst from the alkylate product stream, ... | 06/09/1992 |
