摘要
对氯化苯生产装置水碱洗工艺进行改造:将原一级水洗改为二级水洗,使水洗过程最大幅度地萃取出氯化液中的氯化氢、Fe Cl3,减少碱洗过程耗碱量;在每一洗涤泵出口增加管道静态混合器,加强水碱洗混合分离效果;水碱洗废水循环利用,回收水洗废酸水中的Fe Cl3作为氯化反应催化剂,减少装置运行成本。
Water washing and alkali washing process for chlorobenzene production was improved .The original one-step water washing process was changed into a two-step process in order to extract the hydro-gen chloride and ferric trichloride to the greatest extent from chlorination liquor and in order to reduce al-kali consumption during alkali washing .Pipe static mixers were installed at the outlets of every washing pump to strengthen the mixing and separating effects during water washing and alkali washing .The waste water from water washing and alkali washing was used repeatedly , and ferric trichloride contained in waste acidic water formed during water washing was recovered and used as catalyst for chlorination to re -duce operation cost.
出处
《氯碱工业》
CAS
2015年第10期38-40,共3页
Chlor-Alkali Industry
关键词
氯化苯
氯化液
水洗
碱洗
分离器
chlorobenzene
chlorination liquor
water washing
alkali washing
separator
