Optimization and transformation of fluorine recovery from wet-process phosphoric acid concentration system
The basic situation of fluorine recovery in phosphoric acid concentration system of Wengfu Chemical Company is introduced,and the material balance of fluorine is sorted out.The focus is on the optimization and transformation of fluorine recovery after the concentration system escaped.The first is to optimize the operation in production management,and the second is to transform the equipment by using pipeline washing instead of tower washing,optimizing spray methods,and increasing the flow rate of circulating washing solution.After transformation,the fluorine recovery rate is increased from 58%to 70%,the fluosilicic acid capacity is increased from 30 kt/a to 36 kt/a.
phosphoric acid concentrationfluorine recoveryoptimization and transformation
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