| 摘要 |
A process for the recovery of a sulphonic acid catalyst from an aqueous extract of an alkylation effluent stream comprising the steps of evaporating the extract to obtain a hydrate of the sulphonic acid catalyst; reacting the hydrate with an olefin containing hydrocarbon stream to its corresponding sulphonic acid ester; and introducing the acid ester to a process for the alkylation of a hydrocarbon feedstock with an olefinic alkylation agent at alkylation conditions, thereby decomposing the sulphonic acid ester to its acid form being catalytic active in the alkylation process.
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