摘要
采用离心-共沸脱水-精馏-除焦工艺对甲基硫菌灵生产过程中的溶剂进行连续化回收。结果表明,溶剂经共沸脱水-精馏处理后,回收溶剂中水份≤0.2%,主含量≥99.9%。溶剂套用于下批反应,产品质量稳定,满足生产要求,每吨产品溶剂单耗控制在90 kg以下,满足了甲基硫菌灵规模化生产装置的要求。
Thiophanate - methyl production solvent was treated by centrifugal - dehydration - distillation - remove tar treatment process for continuous solvent recycling. The results showed that after treated by azeotropic dehydration - distil- lation treatment, moisture content in the solvent recovery ≤0. 2%, and the main content≥99.9%. The solvent for the next batch of response had stable product quality and met the production requirements, the unit consumption per ton of the product in the solvent was controlled 90 kg or less, which met the thiophanate - methyl - scale production plant requirements.
出处
《广州化工》
CAS
2013年第1期164-165,共2页
GuangZhou Chemical Industry
关键词
甲基硫菌灵
溶剂
连续化回收
精馏
thiophanate- methyl
solvent
continuous recovery
distillation