Title:
1,6-ヘキサンジオール、1,5-ペンタンジオール及びカプロラクトンを蒸留により後処理するための方法及び装置
Document Type and Number:
Japanese Patent JP2004517136
Kind Code:
A
Abstract:
A process for working up by distillation the crude products obtained in the process according to DE-A 196 07 954 and containing 1,6-hexanediol (HDO), 1,5-pentanediol (PDO) or caprolactone (CLO) in order to obtain the corresponding pure products, the working-up by distillation being carried out in each case in a dividing wall column (TK) in which a dividing wall (T) is arranged in the longitudinal direction of the column with formation of an upper common column region ( 1 ), a lower common column region ( 6 ), a feed section ( 2, 4 ) having a rectification section ( 2 ) and stripping section ( 4 ), and a take-off section ( 3, 5 ) having a stripping section ( 3 ) and rectification section ( 5 ), with feeding of the respective crude product HDO, PLO or CLO in the middle region of the feed section ( 2, 4 ) and removal of the high boiler fraction (C) from the bottom of the column, of the low boiler fraction (A) via the top of the column and of the medium boiler fraction (B) from the middle region of the take-off section ( 3, 5 ), or in thermally coupled columns.
Inventors:
Martin Gull
Gerd Kybel
Thomas krug
Halal rust
Frank Stein
Gerd Kybel
Thomas krug
Halal rust
Frank Stein
Application Number:
JP2002556140A
Publication Date:
June 10, 2004
Filing Date:
January 08, 2002
Export Citation:
Assignee:
BASF Aktiengesellschaft
International Classes:
C07D309/30; B01D3/14; C07C29/80; C07C31/20; C07D315/00; (IPC1-7): C07C29/80; B01D3/14; C07C31/20; C07D309/30
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel