Back to results
US 5,347,067 AGranted
Alkylation catalyst regeneration
AssigneePhillips Petroleum Company
InventorsAlan D. Eastman, Ronald G. Abbott
Life of this patent
Estimating the term…
Abstract
Described is a novel acid-soluble oil composition produced as a by-product from an alkylation reaction catalyzed by a sulfone-containing catalyst. Also described is a novel process for regenerating an alkylation catalyst which contains a sulfone component. The regeneration process utilizes alumina adsorbent to remove a substantial portion of the hydrogen halide from the spent catalyst, thereby producing a neutralized stream, which is then treated with carbon to remove a substantial portion of the reaction by-product to produce a sulfone stream substantially free of reaction by-product and hydrogen halide.
Claims10
An alkylation process, comprising the steps of:
- (a) contacting a hydrocarbon mixture, comprising olefins and isoparaffins, with a catalyst mixture, comprising sulfolane and HF, within a reaction zone to thereby produce a reaction product and a reaction by-product;
- (b) separating said reaction product from said catalyst mixture within a first separation zone to produce a separated reaction product and a separated catalyst mixture with said separated catalyst mixture containing a substantial amount of said reaction by-product;
- (c) utilizing said separated catalyst mixture as at least a portion of said catalyst mixture;
- (d) passing a portion of said separated catalyst mixture to a second separation zone to thereby separate said a portion of said separated catalyst mixture into a second separation zone overhead stream, comprising a major portion of the HF component of said a portion of said separated catalyst mixture, and a second separation zone bottoms stream comprising a major portion of the sulfolane component of said a portion of said separated catalyst mixture and a major portion of the reaction by-product component of said a portion of said separated catalyst mixture;
- (e) utilizing said second separation zone overhead stream as at least a portion of the HF component of said catalyst mixture;
- (f) contacting said second separation zone bottoms stream with alumina to thereby remove a substantial portion of the HF contained in said second separation zone bottoms stream to produce a neutralized second separation zone bottoms stream;
- (g) contacting said neutralized second separation zone bottoms stream with carbon to thereby remove a substantial portion of said major portion of the reaction by-product to produce a sulfolane stream substantially free of said reaction by-product and HF;
- and
- (h) utilizing said sulfolane stream as at least a portion of the sulfolane component of said catalyst mixture.
6 more elements
An alkylation process comprising the steps of:
- (a) contacting a hydrocarbon mixture, comprising olefins and isoparaffins, with a catalyst mixture, comprising a sulfone component and a hydrogen halide component, within a reaction zone to thereby produce a reaction product and a reaction by-product;
- (b) separating said reaction product from said catalyst mixture within a first separation zone to produce a separated reaction product and a separated catalyst mixture with said separated catalyst mixture containing a substantial amount of said reaction by-product;
- (c) passing said separated catalyst mixture to a second separation zone to thereby separate said separated catalyst mixture into a second separation zone overhead stream, comprising a major portion of the hydrogen halide component of said separated catalyst mixture, and a second separation zone bottoms stream, comprising a major portion of the sulfone component of said separated catalyst mixture and a major portion of the reaction by-product component of said separated catalyst mixture;
- (d) contacting said second separation zone bottoms stream with alumina to thereby remove a substantial portion of the hydrogen halide contained in said second separation zone bottoms stream to produce a neutralized second separation zone bottoms stream;
- and
- (e) contacting said neutralized second separation zone bottoms stream with carbon to thereby remove a substantial portion of said major portion of the reaction by-product to produce a sulfone stream substantially free of said reaction by-product and said hydrogen halide component.
3 more elements
Dependencies are inferred from the claim text.