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Processes for producing succinic acid from fermentation broths containing diammonium succinate
申请公布号：US8246792(B2)
申请号：US201113213147
申请日期：2011.08.19
申请公布日期：2012.08.21
发明人：FRUCHEY OLAN S.;KEEN BRIAN T.;ALBIN BROOKE A.;CLINTON NYE A.;DUNUWILA DILUM;DOMBEK BERNARD D.
分类号：B01D21/00
主分类号：B01D21/00
摘要：Processes for making SA from either a clarified DAS-containing fermentation broth or a clarified MAS-containing fermentation broth that include distilling the broth under super atmospheric pressure at a temperature of >100° C. to about 300° C. to form an overhead that comprises water and ammonia, and a liquid bottoms that includes SA, and at least about 20 wt % water; cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a liquid portion and a solid portion that is substantially pure SA; and separating the solid portion from the liquid portion. A method also reduces the broth distillation temperature and pressure by adding an ammonia separating and/or water azeotroping solvent to the broth.
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