摘要
荧光增白剂351生产母液中含有近50%的二甲基亚砜(DMSO),采用减压蒸馏进行回收,对影响DMSO回收率的因素真空度、pH值进行了研究。结果表明,减压蒸馏回收DMSO的最佳条件为:真空度95 kPa,pH值8.5。在此条件下,DMSO的回收率可达到87.8%。
Fluorescent brighteners mother liquor contains nearly 50% of DMSO,and vacuum distillation was used to recycle.The effect of vacuum degree,the pH value on DMSO recovery rate was studied.The results showed that：the best conditions of vacuum distillation recycling DMSO were：vacuum degree 95 kPa,pH 8.5.Under these conditions,the DMSO recovery rate can reach 87.8%.
出处
《应用化工》
CAS
CSCD
2012年第3期554-556,共3页
Applied Chemical Industry
关键词
母液
DMSO回收
减压蒸馏
liquor
DMSO recycling
vacuum distillation
