以肥料级湿法磷酸为原料，采用磷酸氨法除杂、磷铵料浆强制过滤及能源梯级利用技术，依次经脱砷反应、脱硫反应、一次中和反应、二次中和反应、浓缩、结晶及干燥等工序生产工业级磷酸一铵，产品质量分数达99.02%，P₂O₅与NH₃利用率分别为73.67%和82.19%，副产物滤渣及母液用于磷复肥生产。30 kt/a工业级磷酸一铵可实现年销售收入1.25亿元，利润达1 269.30万元。

Fertilizer grade wet-process phosphoric acid is used as raw material to produce industrial grade monoammonium phosphate (MAP) by purification technology of ammonia method,forced filtration technology of ammonium phosphate slurry and energy cascade utilization technology through process steps of dearsenization reaction,desulfurization reaction,first neutralization reaction,second neutralization reaction,concentration,crystallization and drying in turn.The purity of product reaches 99.02%,the utilization rates of P₂O₅ and NH₃ are 73.67% and 82.19% respectively.The main filter residue and crystal liquor are used for production of phosphate compound fertilizer.A plant with a production capacity of 30 kt/a industrial grade MAP can annually achieve a sale revenue of RMB 125 million,bringing about a profit of RMB 1 269.3 million.

彭宝林(1986-),男,工程师,从事磷化工生产技术开发工作