ALKYLENE OXIDE RECOVERY SYSTEMS

摘要

The application relates to a process for recovery of alkylene oxide comprising: Introducing a feed stream containing alkylene oxide to a stripping section of an alkylene oxide recovery column; stripping alkylene oxide from the feed stream to form a first gaseous portion, wherein the first gaseous portion flows from the stripping section to the reabsorption région of the alkylene oxide recovery column, and wherein the reabsorption région further comprises a first reabsorption section and a second reabsorption section; partially condensing the first gaseous portion into a liquid reflux stream and an alkylene oxide rich vapor stream, wherein the liquid reflux stream is in physical communication with the stripping section; reabsorbing a first fraction of the alkylene oxide rich vapor stream in a first water stream and reabsorbing a second fraction of the alkylene oxide rich vapor stream in a second water stream to form a second agueous solution in the second reabsorption section.