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Title:
METHOD FOR PRODUCING SUCCINIC ACID
Document Type and Number:
WIPO Patent Application WO/2011/115136
Kind Code:
A1
Abstract:
Disclosed is a method for producing high purity succinic acid from a liquid containing succinic acid by crystallization. Specifically disclosed is a method for producing succinic acid that crystallizes the succinic acid from a liquid containing succinic acid while stirring in a crystallization tank provided with a stirring apparatus. The production method is a method for producing succinic acid characterized by having a stirring power requirement of 0.4 kW/m3 - 3 kW/m3 per unit volume of the liquid containing succinic acid in the tank and crystallizes the succinic acid from the liquid containing succinic acid in the crystallization tank. The method is further characterized in that the crystallized succinic acid is continuously or intermittently withdrawn from the crystallization tank and characterized by having the liquid containing succinic acid continuously or intermittently supplied to the crystallization tank and having a crystallization process that maintains a prescribed range of liquid levels in the crystallization tank.

Inventors:
MORI YOSHIAKI
TAKAHASHI GO
SUDA HIDEKI
YOSHIDA SHUJI
Application Number:
PCT/JP2011/056103
Publication Date:
September 22, 2011
Filing Date:
March 15, 2011
Export Citation:
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Assignee:
MITSUBISHI CHEM CORP (JP)
MORI YOSHIAKI
TAKAHASHI GO
SUDA HIDEKI
YOSHIDA SHUJI
International Classes:
C07C51/43; C07C55/10; C12P7/46; C12N15/09
Domestic Patent References:
WO2001014307A12001-03-01
Foreign References:
JP2005082498A2005-03-31
JPH09249586A1997-09-22
JP2008297251A2008-12-11
JP2006528966A2006-12-28
JP2009502911A2009-01-29
JP2001322964A2001-11-20
JP2008049304A2008-03-06
JP2007261957A2007-10-11
JPH11292816A1999-10-26
JP2003012623A2003-01-15
JP2009011873A2009-01-22
JPH01316335A1989-12-21
Other References:
See also references of EP 2551256A4
Attorney, Agent or Firm:
HAMADA Yuriko et al. (JP)
Yuriko Hamada (JP)
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Claims: