During the manufacturing of ammonium phosphate,equipment scaling and clogging may occur,and hot water is typically used for cleaning.The adverse effects of hot water cleaning,and the feasibility of using phosphoric acid are examined as a cleaning agent to hot-wash ammonium phosphate equipment.Taking the ammonium phosphate unit of an ammonium phosphate plant as an example,the process flow,process characteristics and production tests of hot washing of phosphoric acid are presented,the issues in production practice and solutions are reviewed,and the advantages of hot washing of ammonium phosphate unit with phosphoric acid are evaluated.It is believed that this cleaning method is worthy of promotion in the phosphate and com-pound fertilizer industry.
ammonium phosphatescaling and cloggingwater washingphosphoric acid cleaningpracticeeffect evaluation
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