“…Potassium dihydrogen phosphate (MKP) is an important phosphorus chemical product with high value and widespread use. It is applied in the industry, feed, agriculture, food, pharmaceutical, and other fields. , Especially in agriculture, MKP is an important fertilizer, which is an efficient chlorine-free phosphorus potassium compound fertilizer and has the advantages of high nutrient composition (including K 2 O 35%, P 2 O 5 52%), good fertilizer efficiency, good water solubility, and easy to be absorbed by plants. − In recent years, with the development of water-soluble fertilizers, the demand for MKP in agriculture increases. At present, the relatively mature production method of MKP is the neutralization method with thermal process phosphonic acid as the raw material, but the raw materials of this method are expensive; therefore, this method is not suitable for the production of MKP for practical use in agriculture. − Therefore, potassium chloride and wet phosphoric acid are used as raw materials to reduce the production cost.…”