Title:
テトラヒドロフランを蒸留により処理する方法
Document Type and Number:
Japanese Patent JP2005519116
Kind Code:
A
Abstract:
Crude water-containing tetrahydrofuran is purified by passing the crude tetrahydrofuran through three distillation columns, withdrawing water from the bottom of the first column, recycling water-containing tetrahydrofuran from the top of the second column into the first column, passing a sidestream of the first column into the second column, recycling the bottom product of the third column into the first column, and withdrawing a distillate at the top of the first column. Additionally, a sidestream of the second column is passed into the third column and the purified tetrahydrofuran is recovered as the top product of the third column.
Inventors:
Gunter Windecker
Alexander Veck
Rolf-Hartmut Fisher
Marx Leche
Nils Bottke
Michael hesse
Stephan shritter
Holger Borchert
Alexander Veck
Rolf-Hartmut Fisher
Marx Leche
Nils Bottke
Michael hesse
Stephan shritter
Holger Borchert
Application Number:
JP2003572975A
Publication Date:
June 30, 2005
Filing Date:
February 28, 2003
Export Citation:
Assignee:
BASF Aktiengesellschaft
International Classes:
B01D3/14; C07D307/08; (IPC1-7): C07D307/08
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel