尿素一段分解加热器钝化处理

Urea level 1 decomposition heater passivation disposal

2007年7月新制造的一段分解加热器投人生产系统后,尿素成品颜色变红。新设备被钝化处理后重新装入系统,尿素质量问题得到了解决。文章对尿素变红原因进行了分析,解决方案切实可行。

in July 2007,new manufacturing level 1 of decomposition heater was put into production system,urea became red.after the new equipment was passivated,it was repacked system,urea quality problem was solved.Articles of urea become red,this paper analyses the reasons solution is feasible.