PROCESS FOR OBTAINING A DIALKYL CARBONATE AND AN ALKYLENE GLYCOL
申请人:SCHMIDT Andrea
公开号:US20130144080A1
公开(公告)日:2013-06-06
The invention relates to a process for obtaining a dialkyl carbonate and an alkylene glycol from a stream comprising dialkyl carbonate, alkylene carbonate, alkylene glycol and alcohol, comprising the following steps:
(a) distillatively removing a stream (
5
) comprising dialkyl carbonate and alkylene glycol as a heteroazeotrope from the stream comprising dialkyl carbonate, alkylene carbonate, alkylene glycol and alcohol in a first distillation stage (
1
),
(b) separating the stream (
5
) comprising dialkyl carbonate and alkylene glycol as a heteroazeotrope into a first crude product stream (
27
) comprising essentially di-alkyl carbonate and a second crude product stream (
29
) comprising essentially alkylene glycol in an apparatus for phase separation (
25
).