摘要
分析了Ⅰ效蒸发器腐蚀穿孔的主要原因(蒸汽冷凝水中含二氧化碳),提出了改进措施:更换板式蒸发器为列管式蒸发器,以利于蒸发器中二氧化碳的排放;增加管壁的厚度,延长蒸发器使用寿命。改进后,蒸发器腐蚀问题得到了解决。
The main causes that I -effect evaporator is corroded and perforated are analyzed. The cau- ses lie in that the steam condensate contains carbon dioxide. The following improvement measures are put forward ： replacing the plate evaporator by shell and tube evaporator in order to facilitate carbon dioxide e- missions in the evaporator, increasing the thickness of the tube wall in order to prolong the service life of the evaporator. The corrosion problem of evaporator is solved after improvement.
出处
《氯碱工业》
CAS
2013年第4期25-28,33,共5页
Chlor-Alkali Industry
关键词
烧碱蒸发
双效逆流工艺
板式蒸发器
腐蚀
蒸汽冷凝水
二氧化碳
列管式蒸发器
caustic soda evaporation
double-effect countercurrent process
plate evaporator
corrosion
steam condensate
carbon dioxide
shell and tube evaporator
