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介绍大型磷酸二铵(DAP)装置的优化措施:改造DAP生产过程中尾气洗涤系统,以解决反应、造粒尾气抽风量不足、抽风管容易堵塞、造粒机内部水分不易被带走等问题;优化造粒机内件,改善造粒效果;优化筛分系统,有效降低筛分负荷,提升产品外观质量。通过局部的工艺流程优化,磷酸二铵装置的生产效率及能力提高,产品质量提升。
This paper introduces the optimization measures of DAP plant: to reform the tail gas scrubbing system in DAP production process to solve the problems such as reaction, lack of air exhaust of granulated tail gas, easy blockage of exhaust duct and easy removal of water inside granulator ; Optimize the inner parts of the granulator to improve the granulation effect; optimize the screening system, effectively reduce the screening load and improve the appearance quality of the product. Through the optimization of local process, the production efficiency and capacity of DAP plant are improved, and the product quality is improved.