Mobil Oil Corporation

Other

Exxonmobil Chemical Patents Inc.

Mobile Oil Corporation

Sergei Yurchak

Jonathan E Child

Tomas R Melli

Francis P Ragonese

Anagha A Gupte

Frederick J Krambeck

Kenneth J Del Rossi

James H Beech, Jr

James A Stoos

Michael Alan Better

Albin Huss, Jr

Stephen S Wong

Amos A Avidan

Rafi Jalkian

Edward H Edelson

Hartley Owen

Mohsen N Harandi

David L Johnson

Robert G Tinger

Robert A Ware

Arthur A Chin

Robert T Thomson

John C Zahner

Joe E Penick

Ronald M Gould

Wooyoung Lee

Jorge L Soto

Frank P Ragonese

Thomas R Melli

Kevin J Knob

Paul K Chao

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 realized when the oxygenate is stagewise injected into the fluidized bed at one or more locations along the axial direction of the fluidized bed reaction zone.

Conversion of oxygenate to olefins with staged injection of oxygenate

A system and process for producing xylene and other alkylated aromatics includes one or more fluidized bed reaction zones that provide contact between the reactants (i.e., an aromatic reactant and an alkylating reagent). Improved conversion and selectivity is realized when the alkylating reagent is stagewise injected into the fluidized bed at one or more locations downstream from the location of aromatic reactant introduction into the fluidized bed. Preferably, the alkylating reagent is introduced at a plurality of locations along the axial direction of the fluidized bed reaction zone, or at plural locations between a plurality of different fluidized bed reaction zones.

Fluid-bed aromatics alkylation with staged injection of alkylating agents

The present invention provides 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, and for minimizing accumulation of conjunct polymeric byproducts in the recycled acid catalyst.

Removal of light ASO in HF alkylation process

A continuous alkylation process for the production of high octane gasoline comprising contacting a mixture of an isoparaffin and an olefin with a catalyst complex comprising BF3:H.sub.3 PO.sub.4 in a continuous hydrocarbon downflow reactor.

Alkylation process using co-current downflow reactor with a continuous

The present invention provides a method for separating conjunct polymers and sulfolane from a mixture containing conjunct polymers, sulfolane, and hydrofluoric acid comprising the sequential steps of:

Sulfolane purification method

This invention provides a method for separating ASO from a mixture containing ASO, HF and sulfolane comprising the steps of:

Method for regenerating HF/sulfolane alkylation catalyst

The present invention provides 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 the sequential steps of:

Method for separating conjunct polymeric byproducts from mixture

Sulfolane purification by hydrocarbon extraction

The present invention provides a method for separating sulfolane from a mixture containing conjunct polymers, sulfolane, and hydrofluoric acid comprising the sequential steps of:

Separation of sulfolane from conjunct polymeric byproducts

A single path process for alkylating a hydrocarbon feedstock containing an olefin and an isoparaffin is disclosed. The process includes dispersing an acid-based liquid alkylation catalyst into a reaction zone for contact with a continuous hydrocarbon phase. The process further includes separating the hydrocarbon phase from the acid catalyst upon completion of the alkylation reaction and providing a continuous on-line regeneration of the entire volume of catalyst once it has been separated from the hydrocarbon phase.

Single path alkylation method employing reduced acid inventory

A method for separating conjunct polymers and sulfolane from a mixture containing conjunct polymers, sulfolane, and hydrofluoric acid is disclosed, which method comprises the sequential steps of separating hydrofluoric acid from said mixture to provide an intermediate stream containing less than about 30 percent hydrofluoric acid by weight and gravitationally separating said intermediate stream into a sulfolane-enriched stream and a conjunct polymer-enriched stream.

A process has been discovered for the conversion of C.sub.5 -C.sub.7 olefinic hydrocarbons, such as those contained in FCC light naphtha, to iso-butene-rich and isoamylene-rich streams in an integrated process for the production of MTBE and TAME. The process involves the initial separation of the isoamylene-rich C.sub.5 -fraction of the feedstream which is converted to TAME. The C.sub.6 -C.sub.7 fraction plus unreacted C.sub.5 's are converted by olefin interconversion with medium pore zeolite catalyst into an isobutylene and isoamylene-rich stream which is then used as feedstream for etherification to MTBE and TAME.

Process for the production of tertiary alkytl ethers from FCC light

A process for production of ether by hydration and etherification of olefinic feedstock containing at least one lower alkene by contacting the olefinic feedstock and water in a plurality of catalytic reaction zones containing porous solid metal oxide acidic olefin hydration and etherification catalyst under olefin hydration and etherification conditions. Improved operation is achieved by recovering a first effluent stream from at least one fixed bed hydration zone, splitting the first effluent stream into a product recovery stream and a plurality of recycle streams, and passing at least a portion of cooled recycle streams comprising olefin, alcohol and ether in effluent stream component proportions for quenching at least one fixed bed reaction zone to control temperature of hot effluent from a preceding reaction zone.

Reactor quenching for catalytic olefin hydration in ether production

A process for alkylation of isoparaffins and olefins employing a fixed bed of catalyst. The catalyst composition includes an unpromoted synthetic zeolite. The alkylate product contains highly branched paraffins and has an octane suitable for blending into motor gasolines. Alternatively multiple fixed beds can be employed with direct effluent recycle or split olefin feeds.

Process for alkylating olefins and isoparaffins in a fixed bed reactor

Yield is improved in a fluid-bed catalytic paraffin aromatization process by tailoring heat transfer to match the endothermic heat load within the fluid bed.

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Media, PA, United States of America

Sergei Yurchak