- 专利标题: Process for In Situ Water Removal from an Oxidative Esterification Reaction Using a Coupled Reactor-Distillation System
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申请号: US15521762申请日: 2015-10-02
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公开(公告)号: US20170240500A1公开(公告)日: 2017-08-24
- 发明人: Zubin B. Kuvadia , Kirk W. Limbach , Dmitri A. Kraptchetov , Mark A. Silvano
- 申请人: Dow Global Technologies LLC , ROHM AND HAAS COMPANY
- 国际申请: PCT/US2015/053672 WO 20151002
- 主分类号: C07C67/54
- IPC分类号: C07C67/54 ; C02F1/00 ; C02F1/04 ; C07C67/40 ; B01D3/42
摘要:
A process for removing water from an oxidative esterification reactor includes (a) conducting an oxidative esterification reaction in a reactor; (b) removing a crude product stream from the reactor; (c) passing a first portion of the crude product stream directly to a product recovery zone; (d) introducing a second portion of the crude product stream to a distillation column to generate a column overheads stream and a column bottoms stream; (e) passing at least a portion of the columns bottoms stream to the product recovery zone; and (f) recycling a recycle stream comprising at least a portion of the overheads stream to the reactor; wherein the recycle stream contains less than 1 weight percent (wt %) water based on the total weight of the recycle stream, wherein the weight ratio of the first portion to the second portion is at least 1:10, and wherein the amount of the recycle stream recycled to the reactor is such that the reactor contains less than or equal to 2.5 wt % water, based on the weight of the reactor contents.
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