Alkylation process for reacting an olefin feed being substantially free of isobutylene which utilizes a hydrogen fluoride and sulfone catalyst
AssigneePhillips Petroleum Company
InventorBruce B. Randolph
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Abstract
A process for producing an alkylate product having an improved octane value from an olefin stream having a reduced concentration of the butene isomer of isobutylene. The olefin feed stream to the process system is substantially free of isobutylene and can have undergone prior processing to remove isobutylene therefrom. The olefin feed is subjected to an alkylation reaction catalyzed by a mixture of hydrogen fluoride and sulfone.
Claims12
A method of improving the quality of an alkylate product produced form the alkylation of 1-butene in an alkylation process which uses a hydrogen fluoride-containing catalyst, the method comprises the steps of:
- providing with said hydrogen fluoride-containing catalyst a concentration of a sulfone;
- contacting an admixture comprising an isoparaffin and an olefin feed having a volumetric ratio of isobutylene to 1-butene of less than 1:10, with said hydrogen fluoride-containing catalyst within a reaction zone;
- and
- producing said alkylate product.
An improved alkylation process of the type including contacting, within a reaction zone, a mixed olefin stream, comprising 1-butene and isobutylene, and an isoparaffin with a hydrogen fluoride catalyst and producing an alkylate product, wherein the improvement comprises:
- removing from said mixed olefin stream, prior to contacting it with said hydrogen fluoride catalyst, a portion of the isobutylene contained therein to provide an olefin feed having a volumetric ratio of isobutylene to 1-butene of less than 1:10;
- and
- providing a concentration of a sulfone in said hydrogen fluoride catalyst to thereby enhance the quality of 1-butene alkylate produced from the hydrogen fluoride catalyzed alkylation of 1-butene.
Dependencies are inferred from the claim text.