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说明在用硝铵料浆、磷酸、硫酸铵、硝酸钾生产复合肥 (15 5 2 5 )产品 (硝态氮要求 >5 0 % )的过程中 ,怎样控制以达到最大限度地减缓设备、管道结疤结块 ;维持系统热平衡 ;最大限度降低 KNO3消耗。指出操作关键是降低干燥温度 ,利用 130~ 140℃热硝铵溶液 ,尽量增加硝铵溶液加入量 ,加入适量硫酸 ,维持系统热平衡 ;硫酸适宜加入量 5 5~ 6 5 kg/ t产品 ,造粒机出口物料 n(N) / n(P)控制 0 .9~ 1.1,硝酸钾消耗可降到 2 0 0~ 2 2 0 kg/ t产品 ,生产可在优化情况下运行
Describe how to control the production of compound fertilizer (15 5 2 5) products (nitrate nitrogen requirement> 50%) with ammonium nitrate slurry, phosphoric acid, ammonium sulfate and potassium nitrate in order to minimize equipment, pipelines Scarring lumps; maintaining system heat balance; minimizing KNO3 consumption. It is pointed out that the key to the operation is to reduce the drying temperature. The thermal ammonium nitrate solution at 130-140 ℃ should be used to increase the amount of ammonium nitrate solution as much as possible and the appropriate amount of sulfuric acid should be added to maintain the system thermal balance. Sulfuric acid should be added in an amount of 5-56 kg / t, Machine export materials n (N) / n (P) control 0 .9 ~ 1.1, potassium nitrate consumption can be reduced to 200 ~ 220 kg / t products, the production can be run under the optimized conditions