Mobil Oil Corporation

Phillips Petroleum Company

Mobile Oil Corporation

Jonathan E Child

Tomas R Melli

Sergei Yurchak

Francis P Ragonese

Albin Huss, Jr

Kenneth J Del Rossi

Byung C Choi

Anagha A Gupte

Michael Alan Better

Samuel A Tabak

Frederick J Krambeck

Clinton R Kennedy

Rafi Jalkian

Edward H Edelson

Bruce B Randolph

Paul H Schipper

David O Marler

Ronald G Abbott

Ajit V Sapre

Tai-Sheng Chou

Arthur A Chin

Robert T Thomson

James K Wolfenbarger

Robert S Kurtas

Kenneth R Albinson

Thomas R Melli

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 blending components of gasoline motor fuel. The novel catalyst comprises a mixture of a hydrogen halide, a sulfone and water and has suitable corrosion properties which permit its utilization in alkylation process systems. The novel alkylation catalyst is utilized in a novel process for alkylating olefin hydrocarbons with isoparaffin hydrocarbons.

Isoparaffin-olefin alkylation

The present invention provides an acid catalyzed isoparaffin-olefin alkylation process which improves process stability and safety by storing the acid in an excess of an additive which reduces the fuming tendency of the mixture, for example, a sulfone. Acid is stripped from the additive and concentrated prior to charging the acid to the alkylation reaction zone. Specifically, because the stored solution of acid in the additive is more dilute than can be effectively used for isoparaffin-olefin alkylation, the acid is concentrated prior to charging the catalyst mixture to the reaction zone. The invention solves the problem of conjunct polymer accumulation by diluting the conjunct polymer with a relatively large volume of the additive and continuously regenerating a slipstream of the dilute acid/additive mixture.

Liquid acid alkylation catalyst and isoparaffin-olefin alkylation process

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, which method provides a sulfolane recycle stream which requires no further drying before charging the stream to the alkylation reaction zone.

Regeneration of HF-based 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, and for minimizing accumulation of conjunct polymeric byproducts in the recycled acid catalyst.

Removal of light ASO in HF alkylation process

A process for producing a low benzene content gasoline is disclosed. Catalytic reforming produces a benzene rich reformate which is fractionated to yield a benzene rich C6 fraction which is then over-alkylated, preferably with C2/C3 olefins from an FCC, to produce heavy alkylate having too high an end point for use as gasoline. Heavy alkylate is charged to an FCC reactor, along with a conventional heavy FCC feed, and converted back into a gasoline boiling range product. Heavy alkylate also produces reactive alkyl fragments in the cracking reactor which react with benzene produced during cracking of FCC heavy feed.

Over alkylation and catalytic cracking for benzene conversion

An isoparaffin-olefin alkylation process is disclosed which improves alkylate quality by segregating the olefin feed into intermediate feedstreams which are enriched in propene, 1-butene, and/or 2-butenes with respect to the olefin feed, and alkylating these intermediate feedstreams in separate reaction zones at reaction temperatures specific to the olefin feed to increase the ratio of trimethylpentanes to dimethylhexanes in the resulting alkylate product.

Multiple split feed isoparaffin-olefin alkylation

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

The present invention includes an isoparaffin:olefin alkylation process and apparatus in which liquid acid inventory is reduced and temperature control is improved by reacting the isoparaffin:olefin feed with a thin film of liquid acid catalyst supported on a heat exchange surface.

Film type alkylation process

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.

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Sewell, NJ, United States of America

Jonathan E Child