公开(公告)号：BR7016123D0

公开(公告)日：1973-01-11

申请号：BR21612370

申请日：1970-01-19

Applicant: HOECHST AG

Inventor： VOIGT H ,  WETZEL W ,  MALON E ,  SEHNECK E

IPC: C07C7/11 ,  C07C7/10

公开(公告)号：BR7016010D0

公开(公告)日：1973-01-18

申请号：BR21601070

申请日：1970-01-14

Applicant: HOECHST AG

Inventor： MALON E ,  HECK G ,  KRAUSE W ,  SCHILKEN H

IPC: C07C7/11 ,  C07C11/24

Abstract: 1,256,052. Separating carbon dioxide and acetylene from cracked gas. FARBWERKE HOECHST A.G. 15 Jan., 1970 [16 Jan., 1969], No. 1985/70. Addition to 1,242,634. Heading B1L. The rich dimethylformamide loaded principally with carbon dioxide and acetylene from used in the process of the Parent Specification, predegassed at 1.05-1.3 ats. abs. and 95- 110‹C.; 60-70% of the still partially charged product is returned directly for reuse, while the remaining 40-30% is completely degassed at 0.25-0.55 ats. abs. and 110-130‹C. before also being returned to the final wash stage of the process.