A kind of decarbonation process of methionine salt saponification liquid

Abstract

The invention provides a sethionine salt saponified liquid carbonate removing process. Firstly, for ensuring that the methionine salt concentration in bipolar membrane inlet water is 7-10% by weight, sethionine salt saponified liquid is diluted by 0-1.5 times, microporous filtration is performed, then the saponified liquid is sequentially subjected to bipolar membrane treatment and high-temperature heating decarburization treatment, and the removal rate of carbonate in the saponified liquid can be up to 70-100%. The sethionine salt saponified liquid carbonate removing process has the actual advantages that the process combination is reasonable, the carbonate in the saponified liquid can be effectively controlled to be converted into bicarbonate through the bipolar membrane treatment, and meanwhile 4-8% of alkali by weight can be also generated for reuse. By the adoption of the high-temperature heating decarburization treatment, the bicarbonate can be effectively decomposed into CO2, and a decarburization effect is achieved; the high carbonate removing rate can ensure long-term, efficient and stable operation of an ion exchange system in a follow-up process, and the methionine production capacity can be improved; production of a byproduct sulfate or hydrochloride of the ion exchange system is remarkably reduced, meanwhile the alkali consumption is reduced, clean production is achieved, and the operation cost is reduced.

Description

technical field [0001] The invention belongs to the application of bipolar membrane electrodialysis technology in the field of chemical industry, and in particular relates to a decarbonation technology of methionine salt saponification liquid. Background technique [0002] DL-methionine, the molecular formula is C 5 h 11 NO 2 S, one of the basic units of protein, is the only amino acid containing sulfur among the essential amino acids. It is closely related to the metabolism of various sulfur-containing compounds in organisms. When methionine is lacking, it will cause loss of appetite, slow growth or no weight gain, kidney enlargement and iron accumulation in the liver, and finally lead to liver necrosis or fibrosis. It is widely used in food industry, feed industry, pharmaceutical industry and chemical industry. [0003] In 2014, the global feed production increased, the overall supply of methionine was stable, and the demand increased. The global methionine production...

AI Technical Summary

Problems solved by technology

Among them, the carbonate removal rate can reach 70-100%, which can effectively solve the exhaust problem of the separation system in the existing methionine production process, ensure the efficient and stable operation of the separation system, and increase the production capacity of methionine; at the same time, it can effectively reduce the separation Generation of system by-product sulfate or hydrochloride to achieve clean production

Images