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介绍通过净化湿法磷酸生产磷酸二氢钾的方法,即先对湿法磷酸进行陈化、脱硫、除氟后与氨反应得到磷酸一铵溶液,再与氯化钾反应制得磷酸二氢钾,并副产水溶性氯基氮磷钾肥料和农用磷酸铵。得出了生产磷酸二氢钾的工艺条件,磷酸二氢钾产品符合HG2321—92中规定的农产品以上标准,生产工艺简单、环保,具有较好的经济效益。
The method for producing potassium dihydrogen phosphate by purifying wet-process phosphoric acid is introduced, that is, wet-process phosphoric acid is firstly aged and desulfurized to react with ammonia to obtain an ammonium phosphate solution, and then reacted with potassium chloride to obtain potassium dihydrogen phosphate , And by-product water-soluble nitrogen-based NPK fertilizer and agricultural ammonium phosphate. The process conditions for producing potassium dihydrogen phosphate are obtained. The potassium dihydrogen phosphate products meet the above agricultural standard stipulated in HG2321-92, the production process is simple, environmental protection, and has good economic benefits.