用硫酸铵母液代替部分硫酸生产萃取磷酸的研究

Research on Production of Extraction Phosphoric Acid Using Ammonium Sulfate Mother Liquor to Replace Part of Sulfuric Acid

结合陕化公司煤化工装置和磷复肥装置的生产实际,分析了将大型燃煤锅炉烟气氨法脱硫装置(又称硫酸铵装置)副产的硫酸铵母液送至萃取磷酸装置,分别添加在萃取槽、球磨机和真空过滤机上,代替部分硫酸生产萃取磷酸的可操作性,其中包括可行性分析、试运行方案、技改措施、操作要点等。

Based on the actual production in the coal chemical units and phosphate compound fertilizer units of Shanxi Chemical Industrial Co.,the operability of sending the by-product ammonium sulfate mother liquor produced in the ammonia-process desulfurization unit( or ammonium sulfate unit) for flue gas of large-sized coal-fired boiler are analyzed in terms of feasibility study,commissioning plan,revamp measures,operating highlights,etc,including to the extraction phosphoric acid unit,to be charged to the extraction tank,ball mill and vacuum filter,respectively,to replace part of the sulfuric acid for production of extraction phosphoric acid.