公开(公告)号：AT21685T

公开(公告)日：1986-09-15

申请号：AT84112672

申请日：1984-10-19

Applicant: BASF AG

Inventor： LINDNER ALFRED DR ,  KAIBEL GERD ,  WAGNER ULRICH DR ,  VOLKAMER KLAUS DR ,  SCHNEIDER KLAUS-JUERGEN DR ,  WEIS JOSEPHA ,  MAYER HANS-HORST

IPC: B01D3/40 ,  C07C1/00 ,  C07C7/08 ,  C07C11/02 ,  C07C11/12 ,  C07C67/00

公开(公告)号：DE3427979A1

公开(公告)日：1986-01-30

申请号：DE3427979

申请日：1984-07-28

Applicant: BASF AG

Inventor： HOELDERICH WOLFGANG DR ,  LINDNER ALFRED DR ,  MROSS WOLF DIETER DR ,  STROHMEYER MAX DR ,  VOLKAMER KLAUS DR

IPC: C07C1/00 ,  C07C5/25 ,  C07C7/04 ,  C07C11/08 ,  C07C67/00

Abstract: But-2-enes are obtained from C4-hydrocarbon mixtures which contain but-1-ene and may or may not contain but-2-enes by catalytic isomerization of the but-1-ene to but-2-enes in an isomerization zone at elevated temperatures by a process in which the isomerization is carried out in combination with a distillative separation zone, the said hydrocarbon mixture being fed to the isomerization zone and/or distillative separation zone, the isomerization mixture obtained from the isomerization zone is passed into the distillative separation zone, a but-1-ene-containing fraction is removed above the lower third of the distillative separation zone and passed into the isomerization zone, and the but-2-enes or a fraction containing these are or is removed in the lower third of the distillative separation zone.

公开(公告)号：DE3060207D1

公开(公告)日：1982-03-25

申请号：DE3060207

申请日：1980-03-22

Applicant: BASF AG

Inventor： VOLKAMER KLAUS DR ,  BROELLOS KLAUS DR ,  LINDNER ALFRED DR ,  WAGNER ULRICH DR ,  WEITZ HANS-MARTIN DR ,  SCHNEIDER KLAUS

IPC: C07C1/00 ,  C07C7/08 ,  C07C11/12 ,  C07C67/00

公开(公告)号：DE3060195D1

公开(公告)日：1982-03-25

申请号：DE3060195

申请日：1980-03-22

Applicant: BASF AG

Inventor： VOLKAMER KLAUS DR ,  BROELLOS KLAUS DR ,  LINDNER ALFRED DR ,  WAGNER ULRICH DR ,  WEITZ HANS-MARTIN DR ,  SCHNEIDER KLAUS-JUERGEN DR

IPC: C07C1/00 ,  C07C7/08 ,  C07C11/12 ,  C07C67/00

Abstract: A process for isolating a conjugated diolefin from a C4- or C5-hydrocarbon mixture containing the diolefin, by single-stage or multi-stage extractive distillation using a selective solvent, wherein the selective solvent is a solvent mixture which comprises (a) from 1 to 99 percent by weight of an N-alkyl-substituted lower aliphatic acid amide or of an N-alkyl-substituted alicyclic acid amide having 5 ring members and (b) from 1 to 99 percent by weight of an aliphatic or alicyclic ether boiling at from 30 DEG C. to 200 DEG C.

公开(公告)号：DE3060170D1

公开(公告)日：1982-03-11

申请号：DE3060170

申请日：1980-03-22

Applicant: BASF AG

Inventor： VOLKAMER KLAUS DR ,  BROELLOS KLAUS DR ,  LINDNER ALFRED DR ,  WAGNER ULRICH DR ,  WEITZ HANS-MARTIN DR ,  SCHNEIDER KLAUS

IPC: C07C1/00 ,  C07C7/08 ,  C07C11/12 ,  C07C67/00

公开(公告)号：DE2960085D1

公开(公告)日：1981-03-12

申请号：DE2960085

申请日：1979-05-22

Applicant: BASF AG

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

IPC: C07C7/08 ,  C07C1/00 ,  C07C7/00 ,  C07C7/05 ,  C07C11/167 ,  C07C67/00

Abstract: A process for isolating 1,3-butadiene by means of a selective solvent from a C4-hydrocarbon mixture which contains 1,3-butadiene, propyne, hydrocarbons which are more soluble than 1,3-butadiene in the selective solvent and hydrocarbons which are less soluble than 1,3-butadiene in the selective solvent, wherein the C4-hydrocarbon mixture is separated, using one or more extractive distillation zones, into a distillate containing the less soluble hydrocarbons, a stream of 1,3-butadiene and a stream containing the more soluble hydrocarbons, and the propyne is separated off either by distillation of the C4-hydrocarbon mixture in a distillation zone upstream of the extractive distillation zone or zones or by distillation of the stream of 1,3-butadiene, obtained from the extractive distillation zone or zones, in a downstream distillation zone, giving a stream of hydrocarbons containing propyne and 1,3-butadiene, which stream is fed to an additional distillation zone, while at the same time a second stream of liquid or gaseous hydrocarbons is fed to the additional distillation zone, and the bottom product from the additional distillation zone is recycled to the extractive distillation.