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