ALKYLATION OF SECONDARY OLEFINS DERIVED FROM HYDROCARBON COMPOSITIONS CONTAINING TERTIARY OLEFINS

摘要

Alkylation process wherein tertiary olefins are removed from a mixed olefin feed comprising tertiary and secondary olefins by catalytic polymerization and distillation, the remaining secondary olefins are reacted in excess with strong sulfuric acid until no further reaction occurs, the resulting dialkyl sulfates are extracted from the olefin-acid reaction product leaving a raffinate acid phase which is used as the catalyst for the polymerization of the tertiary olefins. The dialkyl sulfate-isoparaffin extract solution and the tertiary olefin polymers are passed to a sulfuric acid alkylating zone where they are alkylated with isoparaffin.