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Title:
DISTILLATION METHOD
Document Type and Number:
Japanese Patent JPH09299702
Kind Code:
A
Abstract:

To separate raw liquid into each component at low cot by making the concentration section of a first distillation part and the stripping section thereof adjoin the stripping section of a second distillation part and the concentration section of a third distillation part, respectively and feeding the raw liquid to between the concentration section and the stripping section of the first distillation part.

The upper end of a first distillation part 65 and the lower end thereof are connected to the center of a second distillation part 66 and that of a third distillation part 67, respectively. When raw liquid is fed, vapor rich in components A, B is generated in the upper part of the stripping section AR22 and liquid rich in components B, C is generated as the liquid flows down in the stripping section AR22, and this liquid enters the third distillation part 67 and is heated and turned into vapor. While this vapor rises in the stripping section AR22, it comes into contact with the raw liquid to generate vapor further rich in components A, B. Consecutively the vapor rises in the concentration section AR21 and reaches the second distillation part 66 and is cooled and condensed there and turned into liquid. In the stripping section AR26 of the third distillation part 67, liquid rich in components B, C transfers to generate vapor rich in a component B and liquid rich in a component C in the upper part and in the lower part, respectively. In this way, the raw liquid is separated into multiple components without using plural distillation columns.


Inventors:
MIDORI SHIZUO
YOSHIMOTO KEIJI
Application Number:
JP1996000121850
Publication Date:
November 25, 1997
Filing Date:
May 16, 1996
Export Citation:
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Assignee:
KYOWA YUKA KK
SUMITOMO HEAVY INDUSTRIES
International Classes:
B01D3/26; C07B63/00; C07C29/80; C07C31/12; C07C67/54; C07C69/14; (IPC1-7): B01D3/26; C07B63/00; C07C29/80; C07C31/12; C07C67/54; C07C69/14
Attorney, Agent or Firm:
川合 誠 (外1名)



 
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