Patent ID: 6492571
Filing Date: 2002-12-10
Classification: B01J,C07C,Y02P

Abstract:
A process for alkylation of isoparaffin with olefins in at least two parallel alkylation reactors, each reactor containing solid acid catalyst having catalyst activity and catalyst selectivity to alkylates, comprising the steps of:continuously feeding an alkylation feedstock comprising isoparaffin and mono-olefins into at least one of said parallel alkylation reactors at alkylation conditions to produce alkylate having an octane number, measuring at least one value selected from the group consisting of said catalyst activity, catalyst selectivity, and said produced alkylate octane in said at least one parallel alkylation reactor, and when said measured value descends to a selected value, terminating the continuous feeding of alkylation feedstock from said at least one parallel alkylation reactor, continuously feeding said alkylation feedstock into said at least one of said parallel alkylation reactors at alkylation conditions after regeneration of the acid catalyst, and feeding said alkylation feedstock into another alkylation reactor of said at least two parallel alkylation reactors at alkylation conditions while introducing a solvent stream into the at least one of said parallel alkylation reactors to regenerate the acid catalyst.