A method for recovering ammonia water from enzymatic amoxicillin mother liquor

Abstract

The present invention relates to a method for recovering ammonia water from an enzymatic amoxicillin mother liquor, and belongs to the technical field of industrial wastewater resource recycling and treatment, including settling and filtering the enzymatic amoxicillin mother liquor, filtering the mother liquor and sending it into a stripping tower for dealcoholization, sending the dealcoholized mother liquor into a static mixer and adding alkali to replace the ammonia component, the ammonia component entering a deamination stripping tower for stripping, condensing the gas produced from the top of the deamination stripping tower to obtain a crude ammonia water, adding the obtained crude ammonia water into a concentration and rectification tower for concentration and purification, and the high-concentration ammonia gas produced from the top of the tower entering an absorption tower after impurities are removed by an air cooler, so as to obtain a pharmaceutical refined ammonia water that meets the quality standard requirements. The present invention not only realizes the compliant discharge of the enzymatic amoxicillin mother liquor, but also the recovered ammonia water can meet the quality standard for being used for the production of amoxicillin, realizes the recycling of resources, opens a virtuous cycle mode of production, and achieves the dual goals of environmental protection and reducing production costs.

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