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综述用湿法磷酸制工业磷酸二氢铵的几种工艺,包括传统化学法工艺、改进化学法工艺、化学净化与溶剂萃取联合除杂质工艺、湿法磷酸净化工艺、化学净化与溶剂萃取相结合工艺、萃取盐酸法工艺,介绍各工艺的生产流程,分析各工艺优缺点。建议厂家根据实际情况选择合适的工艺。
In this paper, several industrial processes of ammonium dihydrogen phosphate with wet-process phosphoric acid are reviewed, including traditional chemical process, improved chemical process, chemical decontamination combined with solvent extraction, decontamination of WPA, chemical decontamination combined with solvent extraction Process, hydrochloric acid extraction process, introduce the production process of each process, analysis of the advantages and disadvantages of each process. Suggest that the manufacturer choose the right process according to the actual situation.