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Patent Searching and Data


Title:
C4-留分から粗製1,3-ブタジエンを取得する方法
Document Type and Number:
Japanese Patent JP2007525481
Kind Code:
A
Abstract:
A process for recovering crude 1,3-butadiene from a C4 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), wherein the operation of the dividing wall column (TK) is set by regulation of the energy input into the dividing wall column (TK) via a bottom vaporizer (V) and setting of the number of the theoretical plates in the lower common column region (C) so that a bottom stream (17) consisting of purified solvent is obtained from the dividing wall column (TK), is proposed.

Inventors:
ベルント ハイダ
Application Number:
JP2006529876A
Publication Date:
September 06, 2007
Filing Date:
May 19, 2004
Export Citation:
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Assignee:
BASF Aktiengesellschaft
International Classes:
C07C7/08; C07C11/167
Domestic Patent References:
JPS5754129A1982-03-31
JPS54138508A1979-10-27
JPS5340702A1978-04-13
JPS58152823A1983-09-10
JPS53147004A1978-12-21
Foreign References:
WO2002062733A12002-08-15
Attorney, Agent or Firm:
矢野 敏雄
山崎 利臣
久野 琢也
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