公开(公告)号：BR0115431A

公开(公告)日：2003-10-07

申请号：BR0115431

申请日：2001-11-15

Applicant: BASF AG

Inventor： BOHNER GERD ,  KINDLER KLAUS ,  PAHL MELANIE ,  KAIBEL GERD

IPC: B01D3/14 ,  C07C7/04 ,  C07C11/167

Abstract: A process for obtaining pure 1,3-butadiene from crude 1,3-butadiene by distillation is carried out in a dividing wall column in which a dividing wall is located in the longitudinal direction of the column to form an upper common column region, a lower common column region, a feed section and an offtake section.

公开(公告)号：AT243178T

公开(公告)日：2003-07-15

申请号：AT99917975

申请日：1999-04-13

Applicant: BASF AG

Inventor： KINDLER KLAUS ,  PUHL HUBERT

IPC: C07C7/08 ,  C07C9/10 ,  C07C11/08 ,  C07C11/16

Abstract: A C4-hydrocarbon mixture essentially containing 1,3-butadiene, butenes, butanes and other C4-hydrocarbons is separated into at least 4 fractions,a) the fraction (a) essentially comprising 1,3-butadiene,b) the fraction (b) essentially comprising butenes,c) the fraction (c) essentially comprising butanes andd) one or more fractions (d) essentially comprising 1,3-butadiene and the other C4-hydrocarbons,by extractive distillation by means of N-methyl-2-pyrrolidinone or an aqueous solution of N-methyl-2-pyrrolidinone (NMP).

公开(公告)号：CA2437396A1

公开(公告)日：2002-08-15

申请号：CA2437396

申请日：2002-02-06

Applicant: BASF AG

Inventor： BOHNER GERD ,  KINDLER KLAUS ,  KAIBEL GERD ,  PAHL MELANIE

IPC: B01D3/40 ,  C07C7/08 ,  C07C11/167

Abstract: The invention relates to a method for recovering crude 1,3-butadiene by extractive distillation from a C4 cut, using a selective solvent in a separation column (TK). In said column, a partition wall (T) is located in t he longitudinal direction of the column, forming a first sub-section (A), a second sub-section (B) and a lower common column zone (C). An extractive scrubber column (K) is connected upstream of the separation column.

公开(公告)号：DE10056841A1

公开(公告)日：2002-05-23

申请号：DE10056841

申请日：2000-11-16

Applicant: BASF AG

Inventor： BOHNER GERD ,  KINDLER KLAUS ,  PAHL MELANIE ,  KAIBEL GERD

IPC: B01D3/14 ,  C07C7/04 ,  C07C11/167

Abstract: Distillation purification of butadiene comprises using partitioned column (1) having longitudinal partition (8) forming common upper section (9), common lower section (14), feed section (10) and discharge section (11). An Independent claim is also included for partitioned column for carrying out process, comprising 40-70 theoretical plates.

公开(公告)号：CA2428845A1

公开(公告)日：2002-05-23

申请号：CA2428845

申请日：2001-11-15

Applicant: BASF AG

Inventor： BOHNER GERD ,  KAIBEL GERD ,  KINDLER KLAUS ,  PAHL MELANIE

IPC: B01D3/14 ,  C07C7/04 ,  C07C11/167 ,  B01D3/28

Abstract: The invention relates to a method for obtaining 1.3 pure butadiene from 1.3 raw butadiene by distillation. Said method is carried out in a separating wall column, wherein a separating wall is arranged in the longitudinal direction of the column in such a manner that it forms a common upper column area, a common lower column area, a feed part and a removal part.

公开(公告)号：AU6741901A

公开(公告)日：2001-11-20

申请号：AU6741901

申请日：2001-05-09

Applicant: BASF AG

Inventor： MEYER GERALD ,  KAIBEL GERD ,  BOHNER GERD ,  KINDLER KLAUS ,  ADRIAN TILL ,  PICKENACKER KARIN ,  PAHL MELANIE ,  HILL THOMAS

IPC: C07C7/08 ,  B01D3/14 ,  B01D3/40 ,  C07C5/09 ,  C07C7/00 ,  C07C11/167 ,  C10G7/08 ,  C10G70/00 ,  C10G70/02 ,  C07C7/163

Abstract: In a process for the work-up of a C4 fraction, comprising the process steps Extractive distillation (I), Selective hydrogenation over a heterogeneous catalyst (II), a crude 1,3-butadiene stream being obtained following process steps (I) and (II) and Distillation of the crude 1,3-butadiene stream for isolating pure 1,3-butadiene (III), the process steps I and II are carried out in a single column or in thermally coupled columns and the process step III is carried out in a second column.