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EP2371804A1 Processes for producing succinic acid from fermentation broths containing diammonium succinate 无效
Verfahren zur Erzeugung vonBernsteinsäureausFermentationslösungen

Processes for producing succinic acid from fermentation broths containing diammonium succinate
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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