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六国化工粉状磷酸一铵(MAP)生产装置采用磷酸装置萃取稀酸、浓缩磷酸贮槽的底流渣酸和磷酸二铵(DAP)装置系统不能平衡的稀酸洗涤液等为原料,含固量较高,中和浓缩后磷酸一铵料浆的黏度大、流动性较差,装置运行周期短,工艺控制指标难以稳定。分析生产中的影响因素,重点对循环水、浓缩和热风系统进行了技改。改造后,2008年产量超过130 kt(设计产能120 kt/a),产能逐步得以释放。
Six countries chemical powder MAP plant production equipment using phosphoric acid plant extraction of dilute acid, concentrated phosphoric acid storage tank underflow residue acid and diammonium phosphate (DAP) device system can not balance the dilute acid washing solution as raw material, solid The higher the amount of neutralized and concentrated ammonium phosphate slurry viscosity, poor liquidity, the device is running short, difficult to control the process of stability indicators. Analysis of the impact of production factors, focusing on the circulating water, enrichment and hot air system for technical transformation. After the transformation, the output in 2008 will exceed 130 kt (designed capacity of 120 kt / a), and the production capacity will gradually be released.