Process for the recovery of 1,3-propanediol from a fermentation broth

摘要

Summary "process for the recovery of 1,3-propanediol from a fermentation broth are disclosed here processes for the recovery of 1,3-propanediol from an aqueous feed stream. The present invention involves contacting an aqueous feed stream that comprises water, 1,3 - propanediol, and at least one contaminant with at least one solvent extraction to form a mixture.The mixture is separated in a first stage and a second stage. The second phase comprises a majority of the water in the aqueous feed stream. The first stage comprises solvent extractor and at least part of 1,3-propanediol was present in the aqueous feed stream.The reason in weight in the first phase of 1,3 - propanediol to any contaminant present is greater than the ratio by weight of 1,3-propanediol in the same contaminant in the aqueous feed stream prior to the aqueous feed stream is contacted with the solvent extractor. The first stage can be removed from the second phase separated to recover the 1,3 - propanediol. 1 / 1