A kind of desalination method of producing l-alanine feed liquid by fermentation method

Abstract

A desalting method for an L-alanine material liquid produced by a fermentation process is disclosed. The method mainly includes salt precipitation, vacuum rotary drum filtering, and other types of operation. A fermentation material liquid of L-alanine produced by the fermentation process has high salt contents and complex components. In the method, after a material liquid to be treated is subjected to salt precipitation, vacuum rotary drum filtering, and other types of operation, contents of ammonium salts, phosphates, and other components in an obtained product are reduced by 70% or above than those in an original process, and can be stably controlled in a qualified range, thus achieving an objective of effectively removing salts.

Description

technical field [0001] The invention relates to the production field of L-alanine, in particular to a method for effectively desalting the fermentation feed liquid of L-alanine produced by the fermentation method, and comprehensively utilizing processes such as salt precipitation and vacuum drum filtration to achieve the purpose of desalting . Background technique [0002] In the traditional amino acid extraction process, the feed liquid to be treated is directly poured into the centrifuge after being evaporated and crystallized, and then centrifuged to discharge the material to obtain the product, such as figure 1 shown. There is no specific desalination operation in the traditional process, which often results in high salt content in the product, and it is difficult to meet the qualified standard for the salt content of the product. [0003] The fermentation method is adopted to produce L-alanine, the phosphate content in the feed liquid to be treated is 1000-6000ppm, an...

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Problems solved by technology

High salt content such as phosphate and ammonium salt seriously affects the quality of L-alanine finished product

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