介绍利用硫酸铵母液稀释硫酸生产含氮磷肥的生产工艺和存在问题,通过采取降低硫酸铵母液中的二氧化硫质量浓度、降低进入混化器参与反应的硫酸质量分数、控制含氮磷肥合适的氮质量分数等改进措施,可以防止现场二氧化硫气体放出,改善含氮磷肥物性,生产出合格含氮磷肥产品。 This paper introduces the production process and existing problems of diluting sulfuric acid with ammonium sulfate to produce nitrogenous phosphate fertilizer. By reducing the concentration of sulfur dioxide in the mother liquor of ammonium sulfate, reducing the mass fraction of sulfuric acid entering into the mixer for reaction and controlling the suitable nitrogen content Scores and other improvements to prevent on-site release of sulfur dioxide gas to improve nitrogen and phosphorus fertilizer physical properties to produce qualified nitrogenous phosphate fertilizer products.