公开(公告)号：FI822292A0

公开(公告)日：1982-06-28

申请号：FI822292

申请日：1982-06-28

Applicant: BASF AG

Inventor： KIENER VOLKER ,  BITTLER KNUT ,  KAIBEL GERD ,  HARTMANN HORST

IPC: C07F5/04 ,  C07F

公开(公告)号：NO801034L

公开(公告)日：1980-10-13

申请号：NO801034

申请日：1980-04-10

Applicant: BASF AG

Inventor： WOLF DIETER ,  SCHMIDT RUDOLF ,  BLOCK ULRICH ,  SCHOENMAKERS HARTMUT ,  BOTT KASPAR ,  KAIBEL GERD

IPC: C07C27/02 ,  C07C53/02 ,  C07C51/00 ,  C07C51/09 ,  C07C51/42 ,  C07C51/44 ,  C07C51/48 ,  C07C67/00 ,  C07C

Abstract: Anhydrous or substantially anhydrous formic acid is obtained by hydrolysis of methyl formate, in a process wherein (a) methyl formate is hydrolyzed, (b) the methanol and excess methyl formate are distilled from the hydrolysis mixture obtained, (c) the bottom product of distillation (b), consisting of formic acid and water, is extracted, in a liquid-liquid extraction, with an extractant which in the main takes up the formic acid, (d) the resulting extract phase, consisting of formic acid, the extractant and a part of the water, is subjected to distillation, (e) the top product obtained from this distillation and consisting of all or part of the water introduced into the distillation, and part of the formic acid, is recycled, as vapor, into the lower part of the distillation column of stage (b), (f) the bottom product of distillation stage (d), consisting of the extractant, with or without part of the water, and the greater part of the formic acid, is separated by distillation into anhydrous or substantially anhydrous formic acid and the extractant, and (g) the extractant leaving stage (f) is recycled to the process.

公开(公告)号：HU226850B1

公开(公告)日：2009-12-28

申请号：HU0302870

申请日：2002-02-06

Applicant: BASF AG

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

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

Abstract: A process for recovering crude 1,3-butadiene from a C 4 fraction by extractive distillation using a selective solvent in a dividing wall column (TK) in which a dividing wall (T) is arranged in the longitudinal direction of the column to form a first subregion (A), a second subregion (B) and a lower common column region (C) and which is preceded by an extractive scrubbing column (K) is proposed.

公开(公告)号：CA2408325C

公开(公告)日：2009-08-11

申请号：CA2408325

申请日：2001-05-09

Applicant: BASF AG

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

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

Abstract: The invention relates to a method for treating a C4 fraction, comprising the following steps: extractive distillation (I), selective hydrogenation on a heterogeneous catalyst (II), a stream of crude 1,3-butadiene resulting from steps (I) and (II); and distillation of said stream of crude 1,3-butadiene i n order to obtain pure 1,3-butadiene (III). Steps I and II take place in a single column or in thermally coupled columns and step III is carried out in a second column.

公开(公告)号：DE50113441D1

公开(公告)日：2008-02-14

申请号：DE50113441

申请日：2001-05-03

Applicant: BASF AG

Inventor： KAIBEL GERD ,  WECK ALEXANDER ,  RAHN RALF-THOMAS

IPC: C07D307/08 ,  B01D3/14 ,  B01D3/26 ,  C07C27/28 ,  C07C29/80 ,  C07C31/20 ,  C07D307/33

Abstract: In a process for the continuous fractional distillation of mixtures comprising tetrahydrofuran, gamma-butyrolactone and/or 1,4-butanediol to give at least three fractions, the fractionation is carried out in an assembly of distillation columns comprising at least one dividing wall column or at least one assembly of thermally coupled conventional distillation columns.

公开(公告)号：DE50113177D1

公开(公告)日：2007-12-06

申请号：DE50113177

申请日：2001-11-15

Applicant: BASF AG

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

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

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：AT369206T

公开(公告)日：2007-08-15

申请号：AT02791781

申请日：2002-12-05

Applicant: BASF AG

Inventor： KAIBEL GERD ,  MILLER CHRISTIAN ,  DOBLER WALTER ,  DIRNSTEINER THOMAS ,  SIGL MARCUS ,  JANSEN HELMUT ,  KAIBEL BJOERN

IPC: B01D3/26 ,  B01J19/32 ,  B01D3/00 ,  B01J8/00 ,  B01J8/02 ,  B01J8/04 ,  B01J8/12 ,  B01J19/24 ,  B01J21/04 ,  B01J23/10 ,  B01J35/02 ,  C07B61/00 ,  C07C45/28 ,  C07C45/72 ,  C07C45/74 ,  C07C49/203

Abstract: A column is described for carrying out reactive distillations in the presence of a heterogeneous particulate catalyst having an ordered packing or random packings which form intermediate spaces in the column interior, the quotient of the hydraulic diameter for the gas flow through the ordered packing or the random packings and the equivalent diameter of the catalyst particles being in the range from 2 to 20, preferably in the range from 5 to 10, in such a manner that the catalyst particles are introduced into the intermediate spaces, distributed and discharged loose under the action of gravity.

公开(公告)号：CA2630380A1

公开(公告)日：2007-05-31

申请号：CA2630380

申请日：2006-11-23

Applicant: BASF AG

Inventor： HOFFER BRAM WILLEM ,  SCHWAB EKKEHARD ,  NEUMANN DIRK ,  KAIBEL GERD ,  BURKLE JOCHEN ,  BUTZ THOMAS

IPC: C10G2/00 ,  B01D3/00

公开(公告)号：DE102005053229A1

公开(公告)日：2007-05-10

申请号：DE102005053229

申请日：2005-11-06

Applicant: BASF AG

Inventor： NEUMANN DIRK ,  KOCH MICHAEL ,  SCHINDLER GOETZ-PETER ,  BENFER REGINA ,  KAIBEL GERD ,  WAGNER HANS-GUENTER

IPC: C07C4/18 ,  B01J23/46 ,  C07B35/06 ,  C07C4/20 ,  C07C15/00

公开(公告)号：DK1282586T3

公开(公告)日：2007-03-19

申请号：DK01945105

申请日：2001-05-09

Applicant: BASF AG

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

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

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.