公开(公告)号：DE3323022A1

公开(公告)日：1985-01-03

申请号：DE3323022

申请日：1983-06-25

Applicant: BASF AG

Inventor： HOELDERICH WOLFGANG DR ,  LINDNER ALFRED DR ,  MROSS WOLF DIETER DR ,  SCHWARZMANN MATTHIAS DR ,  VOLKAMER KLAUS DR ,  WAGNER ULRICH DR

IPC: B01J29/00 ,  B01J29/04 ,  C07B61/00 ,  C07C1/00 ,  C07C5/22 ,  C07C5/25 ,  C07C11/02 ,  C07C67/00 ,  C07C11/08

公开(公告)号：DE3308088A1

公开(公告)日：1984-09-27

申请号：DE3308088

申请日：1983-03-08

Applicant: BASF AG

Inventor： WAGNER ECKHART DR ,  VOLKAMER KLAUS DR ,  HEFNER WERNER DR ,  WAGNER ULRICH DR

IPC: C10L3/10 ,  B01D53/14 ,  B01D53/34 ,  C07C7/11 ,  C10K1/14

Abstract: CO2 and/or H2S are removed from gases which contain CO2 and/or H2S by means of an aqueous absorption liquid containing an alkanolamine, by a process wherein the said gas is treated, in an absorption stage, at from 40 DEG to 100 DEG C., with an aqueous absorption liquid containing from 20 to 70% by weight of methyldiethanolamine, the treated gas is taken off at the top of the absorption stage, the aqueous absorption liquid laden with CO2 and/or H2S is taken off at the bottom of this stage and is regenerated by being let down in two or more flash stages, and the final flash stage is operated under reduced pressure and the regenerated absorption liquid is recycled to the absorption stage.

公开(公告)号：DE2963999D1

公开(公告)日：1982-12-16

申请号：DE2963999

申请日：1980-02-29

Applicant: BASF AG

Inventor： LINDNER ALFRED DR ,  VOLKAMER KLAUS DR ,  WAGNER ULRICH DR

IPC: C07C1/00 ,  C07C7/148 ,  C07C11/09 ,  C07C41/01 ,  C07C41/06 ,  C07C41/44 ,  C07C43/04 ,  C07C67/00

Abstract: A process for isolating isobutene from C4-hydrocarbon mixtures containing isobutene by reacting the mixture with a primary alcohol in the presence of an acid condensing agent, to form the tertiary ether, separating off the unconverted hydrocarbons and decomposing the tertiary ether in the presence of an acid catalyst at an elevated temperature, wherein a primary C3- or C4-alcohol is used and the temperature at which the reaction mixture leaves the etherification stage, in which the tertiary ether is formed, is lower than the mean temperature in the etherification stage.

公开(公告)号：DE2962305D1

公开(公告)日：1982-04-29

申请号：DE2962305

申请日：1979-01-15

Applicant: BASF AG

Inventor： BRUNNER ERWIN DR ,  SCHUBERT ECKART DR ,  LINDNER ALFRED DR ,  MERGER FRANZ DR ,  VOLKAMER KLAUS DR ,  STROHMEYER MAX DR ,  SANDROCK GERHARD DR

IPC: B01J31/00 ,  C07B61/00 ,  C07C1/00 ,  C07C7/148 ,  C07C11/09 ,  C07C41/36 ,  C07C41/42 ,  C07C67/00

Abstract: A process for obtaining isobutene from a C4-hydrocarbon mixture containing isobutene, by reacting the mixture with a primary alcohol in the presence of an acid condensing agent and decomposing the resulting tertiary ether in the presence of an acid catalyst at an elevated temperature, wherein a primary C3- or C4-alcohol is used.

公开(公告)号：DE2960249D1

公开(公告)日：1981-04-30

申请号：DE2960249

申请日：1979-07-18

Applicant: BASF AG

Inventor： LINDNER ALFRED DR ,  VOLKAMER KLAUS DR ,  WAGNER ULRICH DR

IPC: C07C7/08 ,  C07C1/00 ,  C07C7/00 ,  C07C11/16 ,  C07C11/167 ,  C07C67/00