Patent ID: 11890589
Assignee: CHINA PETROLEUM & CHEMICAL CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 6:
7. The reaction system according to claim 6, wherein,
the alkylation reaction apparatus is provided with a mixer for receiving a diluted alkylation reaction raw material, wherein the diluted alkylation reaction raw material is obtained by mixing an alkylation reaction raw material with an isobutane refrigerant obtained from the compression refrigeration unit, a recycled isobutane obtained from the product fractionation unit and a recycled hydrocarbon obtained from the reaction effluent refining unit;
a reaction effluent is subjected to a preliminary separation of acid and hydrocarbon in the reaction effluent refining unit, and a majority of a resulting hydrocarbon phase is used as the recycled hydrocarbon; and
a product fractionation unit comprises at least one deisobutanizer, in which isobutane in the hydrocarbon phase of the reaction effluent is removed, and a recycled isobutane, normal butane and an alkylation product are respectively obtained from a top of the deisobutanizer, a middle upper part of the deisobutanizer, and a bottom of the deisobutanizer.