Class 585/449 - Plural alkylation stages

Subclass of Class 585 - Chemistry of hydrocarbon compounds
Definition: Subject matter in which the effluent from an aromatic alkylation
No. of patents: 117
Last issue date: 04/12/2011

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Number	Title	Issue Date
7923589	Alkylaromatics production using dilute alkene A process for producing an alkylated aromatic product in a reactor by reacting an alkylatable aromatic compound feedstock with another feedstock comprising alkene component and alkane component in a reaction zone containing an alkylation catalyst. The reaction zone ...	04/12/2011
7868218	Alkylaromatics production A process is described for producing an alkylaromatic compound in a multistage reaction system comprising at least first and second series-connected alkylation reaction zones each containing an alkylation catalyst. A first feed comprising an alkylatable aromatic com...	01/11/2011
7790939	Alkylaromatics production A process for alkylation or transalkylation of an alkylatable aromatic compound having reactive impurities with an alkylating agent to produce a monoalkylated aromatic compound, comprising the steps of contacting at least a portion of said alkylatable aromatic compo...	09/07/2010
7777087	Liquid phase alkylation with multiple catalysts A process is disclosed for producing an alkylaromatic compound in a multistage reaction system comprising at least first and second series-connected alkylation reaction zones, each containing an alkylation catalyst. A first feed comprising an alkylatable aromatic co...	08/17/2010
7772448	Alkylaromatics production A process is described for producing an alkylaromatic compound in a multistage reaction system comprising at least first and second series-connected alkylation reaction zones each containing an alkylation catalyst. A first feed comprising an alkylatable aromatic com...	08/10/2010
7745676	Alkylaromatics production A process is described for producing an alkylaromatic compound, in which a first feed comprising an alkylatable aromatic compound and a second feed comprising an alkene are introduced into a first alkylation reaction zone comprising a first alkylation catalyst. The ...	06/29/2010
7692054	Process and apparatus for alkylation of aromatic compound with aliphatic mono-olefin compound of 8 to 18 carbon atoms Continuous processes for monoalkylating aromatic compound with an aliphatic feedstock comprising aliphatic olefin of 8 to 18 carbon atoms per molecule are effected using at least 3 reaction zones in series, each containing solid alkylation catalyst with effluent coo...	04/06/2010
7652183	Method for producing alkyl aromatic compounds In a process for the preparation of alkylaromatic compounds by reacting C3-30-olefins, or alcohols from which C3-30-olefins are formed under the reaction conditions, with an aromatic hydrocarbon in the presence of an alkylation catalyst, the re...	01/26/2010
7645913	Liquid phase alkylation with multiple catalysts A process is disclosed for producing an alkylaromatic compound in a multistage reaction system comprising at least first and second series-connected alkylation reaction zones, each containing an alkylation catalyst. A first feed comprising an alkylatable aromatic co...	01/12/2010
7632974	Alkylation process for increased conversion and reduced catalyst use The invention relates to a process for the production of alkylated aromatic compounds comprising introducing olefin and aromatic compounds into at least first and second vertically spaced catalytic reaction zones in an alkylation unit under alkylation reaction condi...	12/15/2009
7501547	Alkylaromatics production A process is described for producing an alkylaromatic compound in a multistage reaction system comprising at least first and second series-connected alkylation reaction zones each containing an alkylation catalyst. A first feed comprising an alkylatable aromatic com...	03/10/2009
7498474	Vapor phase aromatics alkylation process A process for the production of high octane number gasoline from light refinery olefins and benzene-containing aromatic streams such as reformate. The process achieves good utilization of both the ethylene and the propylene present in the mixed olefin feed from the ...	03/03/2009
7495140	Method of making a synthetic alkylaryl compound A process for alkylating an aromatic compound comprising reacting (a) a first amount of at least one aromatic compound with a first amount of a mixture of olefins having from about 8 to about 100 carbon atoms, in the presence of a strong acid catalyst; and reacting ...	02/24/2009
7420098	Dual zone aromatic alkylation process A process for the catalytic alkylation of an aromatic substrate with an alkylating agent is disclosed that comprises contacting the aromatic substrate and the alkylating agent in sequential alkylation zones to obtain an alkylaromatic. The first catalyst comprises UZ...	09/02/2008
7348465	Selective alkylation of aromatic hydrocarbons A method for increasing selectivity of alkylation to monoalkylation comprising: providing a feedstream consisting essentially of alkylating agent and a stoichiometric excess of benzene, the alkylating agent consisting essentially of a molar blend of propylene and on...	03/25/2008
7339088	Alkylbenzene refining process and apparatus Improved processes and apparatus use a finishing column with a mid-cut that provides alkylbenzene products of high purity containing less than about 1 ppmw benzene and less than about 50 ppmw heavies while accommodating enhancements in the efficiencies and the capac...	03/04/2008
7304198	Staged alkylation in microchannels The invention provides methods and systems for alkylating a paraffinic feed stream in a microchannel utilizing the staged addition of olefin. ...	12/04/2007
7297826	Method for producing phenylalkanes using a combination of two catalysts A process is described for producing phenylalkanes by alkylating at least one aromatic compound using at least one linear olefin containing 9 to 16 carbon atoms per molecule. The alkylation reaction is carried out in the presence of at least two different catalysts ...	11/20/2007
7271123	Molecular sieve catalyst composition, its making and use in conversion process The invention relates to a molecular sieve catalyst composition, to a method of making or forming the molecular sieve catalyst composition, and to a conversion process using the catalyst composition. In particular, the invention is directed to a molecular sieve cata...	09/18/2007
7267746	Dividing wall distillation column control apparatus A control apparatus and control method for controlling the separation in a dividing wall distillation column of at least two feeds into at least three products is disclosed. The apparatus uses a temperature measuring device to measure the temperature of fluid in the...	09/11/2007
7232936	Conversion of oxygenate to olefins with staged injection of oxygenate A system and process for producing olefins from oxygenate, e.g., methanol or dimethylether, includes a fluidized bed reaction zone that provide contact between the oxygenate and a molecular sieve catalyst such as ZSM-34 or SAPO-34. Improved ethylene selectivity is r...	06/19/2007
7217850	Process for the production of phenylalkanes in the presence of a solid acid catalyst the deactivation of which is delayed The invention relates to a process for the production of phenylalkanes comprising an alkylation reaction of at least one aromatic compound by at least one linear olefin having from 9 to 16 carbon atoms per molecule. Said reaction is carried out in a catalytic reacto...	05/15/2007
7214840	Reduction of the Bromine Index of linear alkylbenzenes In a process for reducing the Bromine Index of a feed containing a linear alkylbenzene and bromine-reactive olefinic hydrocarbon contaminants, the feed is contacted under conditions effective to remove bromine-reactive olefinic hydrocarbon contaminants with a cataly...	05/08/2007
7189885	Staged process for producing linear 2-phenyl-alkanes The process disclosed herein is a process for producing phenyl-alkanes by alkylation of an aryl compound with an olefinic compound and which uses a mordenite catalyst and a silica-alumina catalyst. The selectivity of the process to 2-phenyl-alkanes can be varied ove...	03/13/2007
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
7141710	Aromatics alkylation process The invention relates to a process for producing alkylated aromatics, preferably ethylbenzene, in a multiple bed reactor in which at least two catalysts, each comprising a molecular sieve, are used in sequential beds. The first alkylation catalyst is selected to hav...	11/28/2006
7128883	Process and apparatus for ethylbenzene production and transalkylation to xylene The use of two transalkylation catalysts to react aromatic compounds of carbon number nine (and heavier carbon numbers) with benzene to form carbon number eight aromatics is disclosed. The two catalyst system preserves ethyl-group species on the heavier aromatics th...	10/31/2006
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
7074978	Process for the production of alkylbenzene A process for the production of alkylbenzene includes the steps of introducing benzene and an olefin feed into a first alkylation reaction zone in the presence of a first alkylation catalyst under first alkylation reaction conditions to produce alkylbenzene and a va...	07/11/2006
7071369	Process for the production of alkylbenzene with ethane stripping A process for the production of alkylbenzene includes introducing benzene and an olefin feed into a first alkylation reaction zone in the presence of a first alkylation catalyst under first alkylation reaction conditions to produce a first alkylation effluent contai...	07/04/2006
7060863	Multistage reaction system with interstage sparger systems A process and system for the vapor phase alkylation of an aromatic substrate in a multi-stage alkylation reaction zone having a plurality of series-connected catalyst beds spaced from one another to provide mixing zones between adjacent catalyst beds. A feedstock co...	06/13/2006
7019185	Aromatic alkylation process In a method for producing monoalkylated aromatic compounds, an aromatic feed is contacted with an alkylating agent in the presence of a catalyst comprising a molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.5...	03/28/2006
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
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
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
6969496	Apparatus with increased yield and selectivity using side-by-side reaction zones An apparatus provides for increased feed throughput without loss of conversion or selectivity by increasing the catalyst volume in a final reactor of at least three reaction zones. The catalyst volume of the final reactor may be larger because the inner and outer sc...	11/29/2005
6956136	Method of producing cumene hydroperoxide The specification provides a method of producing cumene hydroperoxide by continuous aqueous-emulsion oxidation at a high temperature and pressure in a cascade of reactors, wherein the process is conducted in the presence of a mixture of an aqueous solution of an amm...	10/18/2005
6762334	Alkylaromatic process with removal of aromatic byproducts using efficient distillation A process for the production of alkylaromatic hydrocarbons by alkylating aromatic hydrocarbons with olefinic hydrocarbons is disclosed. The olefinic hydrocarbons are produced by dehydrogenating paraffinic hydrocarbons. Aromatic byproducts formed in dehydrogenation a...	07/13/2004
6740789	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...	05/25/2004
6642425	Reactive distillation process for the alkylation of aromatic hydrocarbons A unified process for reactive distillation under pressure for the alkylation of light aromatic hydrocarbons such as benzene and cumene with straight chain C6 -C18 olefins using a solid acid alkylation catalyst supported in the reflu...	11/04/2003

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Class 585/449 - Plural alkylation stages