Process for removing, isolating and purifying dicarboxylic acids
AssigneeThyssenkrupp Uhde GmbH
InventorsWolfgang Tietz, Joachim Schulze
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Abstract
A process for removing, isolating and purifying dicarboxylic acid from fermentation broths, which includes the following steps: 1) removal of the biomass and any solids present from the fermentation broth in two successive stages, 2) removal of the dicarboxylic acid solution from the biomass-free fermentation broth by simulated moving bed (SMB) chromatography, 3) fine purification of the dicarboxylic acid solution, 4) multistage evaporative concentration and crystallization, and 5) separation and drying of the crystals.
Claims11
A process for separating, recovering and purifying dicarboxylic acid from fermentation broths, said process comprising the following steps:
- Separation of the biomass and any solids that are present from the fermentation broth in two consecutive steps
- Separation of the dicarboxylic acid solution from the biomass-free fermentation broth by means of simulated moving-bed chromatography (SMB)
- Fine purification of the dicarboxylic acid solution
- Multi-stage evaporation and crystallisation
- Separation and drying of the crystals.
Dependencies are inferred from the claim text.