发明授权
US06353118B1 Dewatering and purification of crude pyrrolidine 有权
脱水和纯化粗吡咯烷

Dewatering and purification of crude pyrrolidine
摘要:
In a process for purifying crude pyrrolidine to give a pyrrolidine composition comprising more than 99% (m/m) of pyrrolidine and less than 0.3% (m/m) of water, crude pyrrolidine comprising from 40 to 98% (m/m) of pyrrolidine and having a water content of more than 2% (m/m) is subjected to continuous distillation at a pressure at the top of less than 950 hPa in a column having a stripping section and a rectifying section.
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