Class 585/447 - With specified flow rate through reactor or flow procedure within or at entrance to reactor

Subclass of Class 585 - Chemistry of hydrocarbon compounds
Definition: Subject matter wherein a procedure for achieving contact
No. of patents: 35
Last issue date: 03/23/2010

Number	Title	Issue Date
7683228	Production of high purity cumene from non-extracted feed and hydrocarbon composition useful therein A process for producing an cumene product having a purity of at least 99.50 percent based on the weight of cumene present in the product by the propylation of the benzene present in non-extracted hydrocarbon composition feed, e.g., non-extracted reformate. The non-e...	03/23/2010
7393988	Process for production of ethylbenzene from dilute ethylene streams An improvement in a process for the production of ethylbenzene from a dilute ethylene stream wherein an ethylene-containing stream derived from a cracking process is directed to an ethylene fractionator for separation of ethylene and ethane. The improvement includes...	07/01/2008
7282616	Process for conversion of olefins A process for converting an olefin feed to hydrocarbons suitable for fuel components or their feedstock. According to the process, an olefin feed, possibly together with another hydrocarbon feed, is contacted in a reactor with a catalyst in order to produce a hydroc...	10/16/2007
7259282	Process for production of ethylbenzene from dilute ethylene streams An improvement in a process for the production of ethylbenzene from a dilute ethylene stream wherein an ethylene-containing stream derived from a cracking process is directed to an ethylene fractionator for separation of ethylene and ethane. The improvement includes...	08/21/2007
7223714	Method of transferring catalyst in a reaction system The invention is directed to methods of transfering catalyst particles into and within reaction systems. The reaction systems are those that use catalysts that comprise molecular sieves, particularly metalloaluminophosphate molecular sieves, especially metalloalumin...	05/29/2007
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
7038100	Aromatics alkylation The present invention provides a process for producing an alkylaromatic compound comprising the step of contacting an alkylatable aromatic compound with an alkylating agent under alkylation conditions in the presence of a alkylation catalyst comprising phosphorus an...	05/02/2006
6979394	Alkylaromatic process with catalyst regeneration A process for producing a product aromatic compound is disclosed which uses an on-stream alkylation reactor and an off-stream alkylation reactor, and in which at least a portion of the feed aromatic compound in the effluent stream of off-stream alkylation reactor un...	12/27/2005
6555722	Countercurrent alkylation process A countercurrent process for the alkylation of aromatic materials with olefins which takes place in a multi-bed system. The aromatic material is in the liquid phase; the olefin in the gaseous phase; and the catalyst in the solid phase. The olefinic materi...	04/29/2003
6544408	Process and installation for the production of aromatic compounds in a fixed bed Process for the production of aromatic compounds, such as reforming, that uses at least one fixed catalyst bed with a base of platinum and 0.08% rhenium. In said process, before moving onto the bed, the feedstock undergoes a heat exchange with the effluen...	04/08/2003
6479721	Alkylation process operating at low olefin ratios A process for the alkylation of aromatics with olefins using a solid catalyst is disclosed, wherein the olefin ratio and/or the maximum olefin concentration in the alkylation catalyst, bed is maintained less than an upper limit. Such operation can decreas...	11/12/2002
6395947	Method for preparing diarylethane A method for preparing diarylethane is disclosed. Alkylation is carried out in a continuous type process at 100-300° C. under a pressure of 1-45 kg/cm2 G in the presence of a solid acid catalyst while a reactant mixture comprising alpha-methyl...	05/28/2002
6255549	Method for producing low bromine number fraction A fraction of low bromine number mainly containing a styrenic compound/aromatic compound adduct can be attained, by feeding reaction materials of a styrenic compound and an aromatic compound to a fixed-bed flow reactor packed with a solid acid catalyst in...	07/03/2001
6156949	Selective pseudocumene production by xylene methylation There is provided a process for shape selective xylene methylation that involves contacting a feedstream which includes xylene and methanol under alkylation conditions, with a low activity catalyst. Xylene conversions of at least 15% at methanol utilizati...	12/05/2000
6123836	Process for the removal of acid compounds from a hydrocarbon stream Process for the removal of acid compounds contained in a hydrocarbon process stream by passing the process stream through a fixed bed of an adsorption material at conditions where the acid compounds adsorb on the material and withdrawing a purified hydroc...	09/26/2000
5939597	Fluid bed process for para-xylene production Para-xylene is produced by toluene methylation by charging toluene and a methylating agent to a fluidized bed of catalyst at a rate sufficient to maintain the fluidized bed in a turbulent sub-transport flow regime, reacting the toluene with the methylatin...	08/17/1999
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
5847255	Gas phase alkylation-liquid phase transalkylation process Process for the production of ethylbenzene by alkylation over a silicalite alkylation catalyst with the subsequent transalkylation of diethylbenzene with the alkylation catalyst and conditions selected to retard xylene production and also heavies producti...	12/08/1998
5847254	Alkylation of benzene to form linear alkylbenzenes using fluorine-containing mordenites This invention is directed to a fluorine-containing mordenite catalyst and use thereof in the manufacture of linear alkylbenzene (LAB) by alkylation of benzene with an olefin. The olefin may have from about 10 to 14 carbons. The fluorine-containing morden...	12/08/1998
5789640	Aromatic hydrocarbons alkylation and liquid-solid circulating fluidized bed for alkylation Disclosed is a process for continuous alkylation of aromatics or their derivatives in the presence of a solid acid catalyst in a liquid-solid circulating fluidized bed system, said system comprising a liquid-solid cocurrent upflow reactor, a sedimentation...	08/04/1998
5777187	Two-step process for alkylation of benzene to form linear alkylbenzenes This invention is directed to a fluorine-containing mordenite catalyst and use thereof in the manufacture of linear alkylbenzene (LAB) by alkylation of benzene with an olefin. The olefin may have from about 10 to 14 carbons. The fluorine-containing morden...	07/07/1998
5648579	Continuous alkylation of aromatics using solid catalysts; prevention of catalyst deactivation using a pulsed feed reactor A novel continuous process for the preparation of alkylated benzenes effected by solid catalysts which become deactivated under alkylation conditions uses a single catalyst zone for both reaction and catalyst flushing to prevent deactivation. The process ...	07/15/1997
5395513	Fluid bed catalytic upgrading of reformate A continuous process for upgrading reformate feedstock or the like to reduce benzene content and increase octane fuel rating. The improved process comprises maintaining a fluidized bed of regenerable acid solid medium pore zeolite catalyst particles in a ...	03/07/1995
5262576	Method for the alkylation of organic aromatic compounds A method and apparatus for conducting a catalytic distillation process is provided which allows for maintaining a liquid level in selected portions of the catalyst bed. Three particular processes disclosed are the production of methyl tertiary butyl ether...	11/16/1993
5210348	Process to remove benzene from refinery streams A substantially benzene-free product suitable for gasoline blending is formed from a benzene-containing refinery stream. At least about 30% of the benzene initially present in the stream is catalytically alkylated with C2 -C4 olefins...	05/11/1993
5113031	Aromatic alkylation process A process for the catalytic distillation production of alkylated aromatic compounds is provided wherein the vapor pressure of the olefin may be increased while maintaining the same olefin feed rate and aromatic to olefin ratio. In one embodiment a side st...	05/12/1992
4950831	Coupling process An alkene is coupled with an aromatic hydrocarbon having an active hydrogen on a saturated alpha-carbon in the presence of an unsupported alkali metal as a catalyst under high shear agitation conditions. In preferred embodiments of the invention, the alke...	08/21/1990
4540831	Mixed-phase hydrocarbon conversion process employing total overhead condenser A process is disclosed for performing an exothermic reaction such as the etherification of isobutylene with methanol. The feed is charged to a vertical reaction zone containing a solid catalyst. Heat released by the exothermic reaction partially vaporizes...	09/10/1985
4292457	Alkylation of aromatic hydrocarbons A new crystalline borosilicate comprises a molecular sieve material having the following composition in terms of mole ratios of oxides: wherein M is at least one cation, n is the valence of the cation, Y is a value within the range of 4 to about 600, and Z is ...	09/29/1981
4134734	Detergent alkylation reactor A unitary reactor system for the alkylation of benzene with olefins. The hydrocarbon reactants are sprayed horizontally from a plurality of openings in a number of vertical conduits which extend upward into a lower portion of the vessel. The conduits are ...	01/16/1979
4072729	Simulated moving bed reaction process A continuous catalytic reaction and catalyst reactivation process is performed using a simulated moving catalyst bed to effect simultaneously in different zones of a multi-zone fixed catalyst bed an alkylation reaction of olefinic and aromatic reactants a...	02/07/1978
4051191	Solid phosphoric acid catalyzed alkylation of aromatic hydrocarbons A process for the alkylation of aromatic hydrocarbons using a solid phosphoric acid catalyst in which liquid phosphoric acid is removed from the bottoms stream of the rectification column to which the alkylation zone effluent is charged. The acid is remov...	09/27/1977
4049739	Simulated moving bed alkylation process A continuous catalytic alkylation reaction and catalyst reactivation process is carried out using a simulated moving catalyst bed to effect simultaneously in different zones of a multi-zone, fixed catalyst bed, an alkylation reaction and a reactivation of...	09/20/1977
4049738	Selective production of para-xylene Process for the selective production of para-xylene by methylation of toluene in the presence of a catalyst comprising the crystalline aluminosilicate zeolite ZSM-23....	09/20/1977
4049737	Propylation of toluene Propylation of toluene with selective production of cymene is accomplished by vapor phase reaction of toluene and propylene at a temperature between about 400° and about 600° F. in the presence of a catalyst comprising a crystalline aluminosilicate zeol...	09/20/1977

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Class 585/447 - With specified flow rate through reactor or flow procedure within or at entrance to reactor