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磷酸二氢钾作为食品添加剂、饲料添加剂和高效无氯磷钾复合肥,市场需求逐年上升。通过对传统的曼海姆法制硫酸钾工艺的改进,开发出以氯化钾和废硫酸为原料生产磷酸二氢钾的新工艺。与传统的中和法制备磷酸二氢钾工艺相比,新工艺具有工艺简单、成本低、投资小、资源利用率高等特点,产品可在农业上推广应用。
Potassium dihydrogen phosphate as food additives, feed additives and high-efficiency chlorine-free phosphorus and potassium fertilizer, the market demand increased year by year. Through the improvement of the traditional Mannheim legal system potassium sulfate process, a new process for producing potassium dihydrogen phosphate using potassium chloride and spent sulfuric acid as raw materials has been developed. Compared with traditional preparation of potassium dihydrogen phosphate by neutralization process, the new process has the advantages of simple process, low cost, small investment and high utilization rate of resources, and the product can be popularized and applied in agriculture.