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Title:
METHOD FOR PURIFYING ACETONITRILE
Document Type and Number:
WIPO Patent Application WO/2013/146609
Kind Code:
A1
Abstract:
A method for purifying acetonitrile, said method comprising steps for adding an alkali to water-containing acetonitrile that has been produced by an ammoxidation reaction, reacting the alkali therewith, supplying the resulting reaction mixture to a first distillation column, further mixing the obtained distillate with the alkali, separating the resulting mixture into an acetonitrile phase and an aqueous phase, removing the aqueous phase, and supplying the acetonitrile phase into a second distillation column, wherein the steam distilled from the second distillation column is utilized as a heat source for a reboiler of the first distillation column.

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Inventors:
SANO KAZUHIKO (JP)
ITO TAKAMASA (JP)
Application Number:
PCT/JP2013/058368
Publication Date:
October 03, 2013
Filing Date:
March 22, 2013
Export Citation:
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Assignee:
ASAHI KASEI CHEMICALS CORP (JP)
International Classes:
C07C253/34; B01D3/42; C07C255/03
Domestic Patent References:
WO2006121081A12006-11-16
Foreign References:
JPS55129257A1980-10-06
JPH1135542A1999-02-09
JP2004217656A2004-08-05
CN102516119A2012-06-27
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
Yoshiyuki Inaba (JP)
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