Title:
オレフィン-アルコール共沸混合物の分離方法
Document Type and Number:
Japanese Patent JP5157478
Kind Code:
B2
Abstract:
There is provided a method for separating and collecting at least alcohol with a high purity from an azeotropic mixture of olefin and alcohol. The method conducts the following steps: an azeotropic mixture crystallization step of subjecting an azeotropic mixture of alcohol and olefin represented by the formula: RfCH═CH2 [wherein Rf represents a linear perfluoroalkyl group having 1 to 10 carbon atoms] to a crystallization procedure to separate the mixture into an olefin portion having a higher olefin concentration than that of the original azeotropic mixture and an alcohol portion having a higher alcohol concentration than that of the original azeotropic mixture; and an alcohol purification step of subjecting the separated alcohol portion to either a crystallization procedure or a distillation procedure to separate the alcohol portion into a low-alcohol portion having a lower alcohol concentration than that of the original alcohol portion and a high-alcohol portion having a higher alcohol concentration than that of the original alcohol portion, and thereby collecting alcohol as the high-alcohol portion.
Inventors:
Yuki Matsuda
Kazuyoshi Ichihara
Takeomi Hirasaka
Takuya Ichida
Kazuyoshi Ichihara
Takeomi Hirasaka
Takuya Ichida
Application Number:
JP2008014861A
Publication Date:
March 06, 2013
Filing Date:
January 25, 2008
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
C07C29/78; B01D3/36; B01D9/02; C07C29/80; C07C31/02; C07C31/12; C07C67/11; C07C69/54
Domestic Patent References:
| JP39018112B2 | ||||
| JP2240035A | ||||
| JP51149212A | ||||
| JP2007520561A |
Foreign References:
| WO2005102984A1 |
Attorney, Agent or Firm:
Samejima Mutsumi
Kyousei Tamura
Yoshida Tamaki
Kyousei Tamura
Yoshida Tamaki