蒸发系统降低缩二脲改造总结  

Retrofit summary of evaporation system to reduce the biuret production

作　　者：李春启 LI Chunqi(Hebei Zhengyuan Hydrogen Energy Technology Co.,Ltd.,Cangzhou 061100,Hebei Province)

机构地区：[1]河北正元氢能科技有限公司,河北沧州061100

出　　处：《氮肥技术》2024年第1期10-11,共2页Nitrogenous Fertilizer Technology

摘　　要：河北正元氢能科技有限公司尿素系统采用传统的CO_(2)汽提法工艺,生产能力80万t/a。自2015年4月份开车以来,产品缩二脲一直在1.0%左右。为了降低产品缩二脲含量,通过对尿素系统工艺指标进行调整,对蒸发系统一、二蒸U弯管道进行技术改造,改造后产品缩二脲降低到0.9%以下,提高了产品优等品率。The urea plant of Hebei Zhengyuan Hydrogen Energy Technology Company adopls the traditional CO_(2) stripping process,with a production capacity of 800,000 t/a.Since start up from April 2015,biuret in product has been accounting for around 1.0%.In order to reduce the content of biuret in the product,through adjustment of the process parameter of urea plant,the evaporation system of the first and second evaporation U-bend pipeline are technically retrofitted,after the retrofit biuret content in product is reduced to less than 0.9%,and the rate of superior quality product is improved.

关 键 词：蒸发系统 缩二脲 改造 效果 

分 类 号：TQ441.41[化学工程—化学肥料工业]