公开(公告)号：US3546097A

公开(公告)日：1970-12-08

申请号：US3546097D

申请日：1968-12-27

Applicant: TEXACO INC

Inventor： TUPPER GEORGE B

IPC: C10G75/04 ,  C23F14/02 ,  C10G9/16

CPC classification number: C10G75/04 ,  C23F14/02

公开(公告)号：US3652708A

公开(公告)日：1972-03-28

申请号：US3652708D

申请日：1970-06-24

Applicant: TEXACO INC

Inventor： LEWIS RALPH M ,  LEWIS CHARLES T JR ,  TUPPER GEORGE B ,  POPKEN GARY D

IPC: C01B17/92 ,  C07C2/62 ,  C07C3/54

CPC classification number: C01B17/925 ,  C07C2/62

Abstract: HYDROCARBON CONTENT OF SPENT SULFURIC ACID IS REDUCED BY HEATING WITH AGITATION AT A TEMPERATURE OF 260-275*F. IN ADMIXTURE WITH A HYDROCARBON WHICH IS NON-BOILING AT THIS TEMPERATURE. METHOD IS APPLICABLE TO A RESIDUE ACID OBTAINED BY ABSORBING PROPYLENE IN USED SULFURIC ACID ALKYLATION CATALYST TO FORM DISOPROPYL SULFATE AND EXTRACTING DIPROPYL SULFATE THEREFROM WITH ISOBUTANE. SULFUR DIOXIDE AND PROPYLENE ARE EVOLVED AS OFF GASES.