METHOD FOR RECOVERING SUCCINIC ACID CRYSTALS USING SURFACTANTS DURING CRYSTALLISATION, AND RESULTING CRYSTALS

USPTO Patent Application US 2017/0362157 A1
Application Date: Dec. 21st, 2017

ABSTRACT

The invention relates to a method for producing succinic acid crystals, comprising double crystallisation and the use of at least one surfactant during the first crystallisation step. The invention also...
Assignee(s):
Application Number:
15/529,648
International Classification:
C07C 51/43 (20060101); C07C 55/10 (20060101)
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CLAIMS

What is claimed is:

1. A process for producing succinic acid crystals from a fermentation medium containing succinic acid, comprising: a) bringing a fermentation medium to a pH of between 1.0 and 4.0,b) crystallizing succinic acid from the fermentation medium resulting from step to form first succinic acid crystals and a first crystallization mother liquor,...

DESCRIPTION

FIELD OF THE INVENTION

A subject of the present invention is an improved process for recovering succinic acid crystals, one of the originalities of which lies in double crystallization and the use of surfactants during the first crystallization step. Very advantageously, at the end, crystals are obtained with a color index b in the...
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