公开(公告)号：CZ273596A3

公开(公告)日：1998-05-13

申请号：CZ273596

申请日：1996-09-18

Applicant: BASF AG

Inventor： HAMMON ULRICH DR ,  SCHLIEPHAKE VOLKER DR ,  PIES WOLFGANG DR ,  RAUH ULRICH

IPC: C07B63/00 ,  C07C51/44 ,  C07C57/04 ,  C07C57/07

Abstract: A process for the rectification and sepn. of unsatd. carboxylic acids (I) from the solvents in which (I) are absorbed after the synthesis reaction. The process involves interrupting the rectification and flushing out the rectification column with basic soln.

公开(公告)号：DE3474015D1

公开(公告)日：1988-10-20

申请号：DE3474015

申请日：1984-05-19

Applicant: BASF AG ,  LINDE AG

Inventor： BROECKER FRANZ JOSEF DR ,  DUMBGEN GERD DR ,  PIES WOLFGANG DR ,  SCHLICHTHAERLE GOTTFRIED DR ,  WEBER GUNTER DR DIPL CHEM

IPC: C07C29/15 ,  C07C29/154 ,  C07C31/04

Abstract: Methanol is prepared by catalytic conversion of a synthesis gas mixture, containing hydrogen, carbon monoxide, carbon dioxide and/or water, at from 200 DEG to 320 DEG C. and under from 30 to 300 bar in adiabatic and/or isothermal reactions in the presence of a catalyst containing copper and zinc, by a process in which the fresh catalyst is reduced with a hydrogen-containing gas before the start-up of the process, and then the synthesis is started under conventional conditions and is continued until the formation of methanol in the reaction zone has declined substantially, after which the reaction is interrupted and the catalyst is regenerated.

公开(公告)号：DE3318855A1

公开(公告)日：1984-11-29

申请号：DE3318855

申请日：1983-05-25

Applicant: BASF AG ,  LINDE AG

Inventor： BROECKER FRANZ JOSEF DR ,  DUEMBGEN GERD DR ,  PIES WOLFGANG DR ,  SCHLICHTHAERLE GOTTFRIED DR ,  WEBER GUENTER DR

IPC: C07C29/15 ,  C07C29/154 ,  C07C31/04

Abstract: Methanol is prepared by catalytic conversion of a synthesis gas mixture, containing hydrogen, carbon monoxide, carbon dioxide and/or water, at from 200 DEG to 320 DEG C. and under from 30 to 300 bar in adiabatic and/or isothermal reactions in the presence of a catalyst containing copper and zinc, by a process in which the fresh catalyst is reduced with a hydrogen-containing gas before the start-up of the process, and then the synthesis is started under conventional conditions and is continued until the formation of methanol in the reaction zone has declined substantially, after which the reaction is interrupted and the catalyst is regenerated.