Uop Lcc

Charles P McGonegal

Maureen L Bricker

Herman A Zinnen

Martin Plassen

Ivar Martin Dahl

Gregory A Funk

Arne Karlsson

Ralph D Gillespie

Duncan E Akporiaye

Hemant W Dandekar

Elisabeth M Myhrvold

Simon H Hobbs

Masami Kojima

Svend A Taftø

Mark A Krawczyk

Ara J Alexanian

J W Adriaan Sachtler

Svend A Taft&oslash;

A process and an assembly for simultaneously evaluating a plurality of catalysts is provided wherein the flow rate of a reactive fluid to each of a plurality of reactors is automatically adjusted based on the measured amount of catalyst sample in each reactor to concurrently obtain a substantially identical fluid space velocity in each of the reactors.

Process and assembly for simultaneously evaluating a plurality of catalysts

An apparatus and a method for rapidly generating a plurality of isolated effluents have been developed. A specific embodiment involves screening a plurality of solids through simultaneously contacting the members of the plurality with a fluid, simultaneously sampling the resulting fluids, and processing the resulting fluids to, for example, determine changes as compared to the feed fluid or as compared to other resulting fluids.

Apparatus and method for generating a plurality of isolated effluents

An apparatus and a method for rapidly generating and processing a plurality of isolated effluents have been developed. A specific embodiment involves screening a plurality of solids through simultaneously contacting the members of the plurality with a fluid, sequentially sampling the resulting fluids, and processing the resulting fluids to, for example, determine changes as compared to the feed fluid or as compared to other resulting fluids.

A process for separating at least one C alkylaromatic hydrocarbon from a mixture containing at least one C alkylaromatic hydrocarbon and at least one C or C alkylaromatic hydrocarbon using dealuminated sodium zeolite Y.

Process for separating alkylaromatic hydrocarbons

An improved process is disclosed for the selective transalkylation of toluene and, optionally, of C aromatics. The process preferably uses a bound sulfated zirconia catalyst to provide improved selectivity for the production of xylenes.

Selective aromatics transalkylation

A process for separating at least one C alkylaromatic hydrocarbon from a mixture containing at least one C alkylaromatic hydrocarbon and at least one C or C alkylaromatic hydrocarbon using sodium zeolite Y, dealuminated sodium zeolite Y or dealuminated zeolite Y ion exchanged with a metal selected from the group consisting of calcium, sodium, strontium, a Group IB element, a Group VIII element and mixtures thereof.

A process for separating at least one C,alkylaromatic hydrocarbon from a mixture containing at least one C,alkylaromatic hydrocarbon and at least one C,or C,alkylaromatic hydrocarbon using zeolite Y or zeolite Y ion exchanged with a metal selected from the group consisting of calcium, sodium, strontium, a Group IB element, a Group VIII element and mixtures thereof.

A process for separating meta-xylene from a mixture containing meta-xylene, para-xylene, and ortho-xylene has been developed. The process involves contacting the mixture with zeolite Beta to effect the adsorption of the para-xylene, ortho-xylene, and ethylbenzene in preference to the meta-xylene and recovering the meta-xylene.

Process for separating meta-xylene

A process for the transalkylation of benzene, toluene and alkylaromatic hydrocarbons containing nine and ten carbon atoms form alkylaromatic hydrocarbons containing eight carbon atoms has been developed. The fixed bed reaction and adsorption zone contains a transalkylation catalyst and an adsorbent effective to selectively adsorb C.sub.9 and C.sub.10 alkylaromatic hydrocarbon reactants relative to the C.sub.8 alkylaromatic hydrocarbon products. Hydrogen and a desorbent are introduced to a first portion of the zone and an effluent containing at least one C.sub.8 alkylaromatic hydrocarbon product is withdrawn from a second portion of the zone. After a period of time, the desorbent is redirected to the second portion of the zone and concurrently the effluent containing at least one C.sub.8 alkylaromatic hydrocarbon product is withdrawn from the first portion of the zone. The alternation of introducing the desorbent to a first portion and then a second portion of the zone while concurrently withdrawing the effluent from the second portion and then the first portion of the zone is continued, thereby retaining the C.sub.9 and C.sub.10 alkylaromatic hydrocarbons within the zone until they are consumed.

C.sub.8 alkylaromatic hydrocarbon production using reversible flow

A process for producing at least one C.sub.8 alkylaromatic hydrocarbon product from a feedstock containing at least one C.sub.9 or C.sub.10 alkylaromatic hydrocarbon reactant using simulated moving bed reactive chromatography has been developed. At least a portion of the reactants are transalkylated to form at least one product in a zone of the simulated moving bed with concurrent separation of at least one alkylaromatic hydrocarbon using the adsorbent. The adsorbed alkylaromatic hydrocarbon is desorbed from the adsorbent in a subsequent zone of the simulated moving bed and the transalkylation of the reactants with concurrent separation of at least one alkylaromatic hydrocarbon using the adsorbent is continued.

Process for aromatic transalkylation using simulated moving bed reactive

A process for the transalkylation of benzene, toluene and alkylaromatic hydrocarbons containing 9 and 10 carbon atoms and at least one methyl or ethyl group to form alkylaromatic hydrocarbons containing 8 carbon atoms has been developed. The benzene, toluene, and alkylaromatic hydrocarbon reactants are introduced to a fixed bed reaction and adsorption zone operating under conditions effective for transalkylation and containing a catalyst effective to transalkylate the alkylaromatic hydrocarbons and benzene, and an adsorbent effective to selectively adsorb C.sub.9 and C.sub.10 alkylaromatic hydrocarbon reactants relative to the C.sub.8 alkylaromatic hydrocarbon products. Hydrogen and a desorbent capable of desorbing the C.sub.9 and C.sub.10 alkylaromatic hydrocarbons from the adsorbent is introduced to a first portion of the reaction and adsorption zone and an effluent containing at least one C.sub.8 alkylaromatic hydrocarbon product is withdrawn from a second portion of the reaction and adsorption zone. After a period of time, the desorbent is redirected to the second portion of the reaction and adsorption zone and concurrently the effluent containing at least one C.sub.8 alkylaromatic hydrocarbon product is withdrawn from the first portion of the reaction and adsorption zone. The alternation of introducing the desorbent to a first portion and then a second portion of the reaction and adsorption zone while concurrently withdrawing the effluent from the second portion and then the first portion of the reaction and adsorption zone is continued, thereby retaining the C.sub.9 and C.sub.10 alkylaromatic hydrocarbons within the reaction and adsorption zone until they are consumed.

A process to isomerize at least one normal or mono-methyl-branched alkane containing from about 6 to about 8 carbon atoms to form at least one multi-methyl-branched alkane has been developed. The normal or mono-methyl-branched alkane is introduced to a reaction and adsorption zone operating under conditions effective to isomerize the normal or mono-methyl-branched alkane and containing a catalyst effective to isomerize the normal or mono-methyl-branched alkane and an adsorbent effective to selectively adsorb normal and mono-methyl-branched alkanes relative to multi-methyl-branched alkanes. Hydrogen and a desorbent comprising at least one alkane having from about 4 to about 8 carbon atoms is introduced to a first portion of the reaction and adsorption zone and an effluent containing at least one multi-methyl-branched alkane is withdrawn from a second portion of the reaction and adsorption zone. After a period of time, the desorbent is redirected to the second portion of the reaction and adsorption zone and concurrently the effluent containing at least one multi-methyl-branched alkane is withdrawn from the first portion of the reaction and adsorption zone. The alternation of introducing the desorbent to a first portion and then a second portion of the reaction and adsorption zone while concurrently withdrawing the effluent from the second portion and then the first portion of the reaction and adsorption zone is continued.

Alkane isomerization using reversible flow reactive chromatography

A process for the continuous isomerization of an alkane to produce an isomerized product through contacting the alkane with a simulated moving bed acting as a catalyst for isomerization and an adsorbent for the alkanes has been developed. The alkane may be n-butane and the isomerized product 2-methylpropane, the alkane may be n-pentane and the isomerized product 2-methylbutane or 2,2-dimethylpropane, the alkane may have from 6 up to about 8 carbon atoms with no more than one methyl branch and the isomerized product having the same number of carbon atoms and at least two methyl branches, or the reactant may be a mixture of the foregoing alkanes with the corresponding isomerized products being formed. In a zone of the simulated moving bed, the alkanes are catalytically isomerized to form the isomerized products. The unreacted alkanes are adsorbed, and the isomerized products are collected. In a subsequent zone of the simulated moving bed, the unreacted alkanes are desorbed using a desorbent and may be catalytically isomerized to form additional isomerized products which are also separated and collected. The catalyst used in the simulated moving bed may be platinum on tungstated zirconia, and the adsorbent used in the simulated moving bed may be EU-1, ZSM-12, SAPO-5, Y-82, faujasite, erionite, zeolite beta exchanged with sodium, lithium, potassium, barium, calcium, strontium or combinations thereof, zeolite X exchanged with calcium and strontium, mordenite exchanged with sodium, lithium, potassium, barium, calcium, strontium, or combinations thereof.

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Addison, IL, United States of America

Charles P McGonegal