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现中和料浆浓缩工艺中,磷铵料浆浓缩后80～90℃的末效蒸汽排入大气,造成能源浪费。磷铵生产中蒸汽的梯级利用是充分利用中和反应热和蒸发浓缩末效蒸汽预浓缩进中和反应槽的稀磷酸,可使蒸发浓缩末效蒸汽温度降至50～60℃,节约浓缩原生蒸汽,综合能耗同比降低39%,装置生产能力提高50%。
In the process of slurry concentration, the end-stage steam of 80-90 ° C is concentrated into the atmosphere after concentrated ammonium phosphate slurry, resulting in energy waste. The cascade utilization of steam in the production of ammonium phosphate makes full use of the heat of neutralization and the concentration of the final concentration steam in the evaporation and preconcentration into dilute phosphoric acid in the neutralization reaction tank to reduce the temperature of the final steam temperature in the evaporation and concentration to 50-60 DEG C, Steam, integrated energy consumption decreased 39% year on year, device production capacity increased by 50%.