如何提高单管反应器生产DAP的含氮量  

How to increase the N content in DAP manufactured by single pipe reactor

作　　者：顾光东 常敏 

机构地区：[1]云天化集团红磷公司,云南开远661600

出　　处：《磷肥与复肥》2004年第5期39-41,共3页Phosphate & Compound Fertilizer

摘　　要：随着我国磷矿资源的不断开采,磷矿品质下降,导致磷酸二铵产品氮含量达不到出口要求〔w(N)≥17.5%〕,影响DAP产品的出口。本文结合磷酸二铵的生产与计算,说明DAP产品w(N)<17.5%的原因,并对采用硫酸、硫铵、尿素、液氨几种方式提高磷酸二铵成品中氮含量的操作风险与成本进行分析比较,认为用硫铵成本最高,用硫酸风险最大。The reason why the nitrogen content in DAP is lower than 17.5% (w/w) is discussed, for continually mining phosphate rock to lower rock quality and limit the export of DAP. Compared the additions of sulfuric acid, ammonium sulfate, urea or liquid ammonia to raise N content in DAP, the conclusion is drawn that the highest cost results from the addition of ammonium sulfate and the highest risk from sulfuric acid .

关 键 词：磷酸二铵 氮含量 单一管式反应器工艺 

分 类 号：TQ442.14[化学工程—化学肥料工业]