公开(公告)号：WO2015164379A1

公开(公告)日：2015-10-29

申请号：PCT/US2015/026883

申请日：2015-04-21

Applicant: INVISTA TECHNOLOGIES S.À R.L.

Inventor： WARD, Philip N.

IPC: C07C31/20 ,  C07C29/17 ,  C01B3/50 ,  B01D53/22 ,  B01J19/24

CPC classification number: C07C29/172 ,  B01D53/22 ,  B01D2311/06 ,  B01D2311/25 ,  C01B3/501 ,  C07C29/76 ,  C07C31/207 ,  B01D2311/04

Abstract: The disclosed process provides an improved process for manufacturing and recovering butanediol. More particularly, the disclosed process relates to an improved process for manufacturing and recovering butanediol from feedstock comprising butynediol in a reaction zone at reaction conditions, comprising the steps of reacting butynediol in the liquid phase and hydrogen in a reaction zone containing hydrogenation catalyst, recovering liquid phase product from the reaction zone, passing the recovered liquid phase product into a first liquid pressure let down vessel maintained at specific conditions, recovering first and second streams from the first liquid pressure let down vessel as liquid bottoms and overhead vent gas, respectively, passing the first stream liquid bottoms recovered to a second liquid pressure let down vessel maintained at specific conditions, and the second stream vent gas recovered to a vent gas cooler maintained at specific conditions, passing the gas from the vent gas cooler to a hydrogen recovery zone comprising a membrane filter, whereby the permeate comprises high purity hydrogen gas and the retentate comprises contaminants, recycling the permeate to the reaction zone, and recovering first and second streams from the second liquid pressure let down vessel as liquid bottoms comprising butanediol and overhead vent gas, respectively.

Abstract translation: 所公开的方法提供了制备和回收丁二醇的改进方法。 更具体地说，所公开的方法涉及在反应条件下在反应区中从包含丁炔二醇的原料制备和回收丁二醇的改进方法，其包括在含有氢化催化剂的反应区中使液相中的丁炔二醇与氢反应的步骤，回收液体 将回收的液相产物通入保持在特定条件下的第一液压降压容器中，分别从第一液压放出容器回收第一和第二流作为液体底部和顶部排放气体，通过 回收到第二液体压下容器的第一流液体塔底物保持在特定条件，并且将第二流排放气体回收到保持在特定条件下的排放气体冷却器，将气体从排气冷却器传递到氢回收区，包括 膜过滤器，由此渗透物包括 高纯度氢气和滞留物包括污染物，将渗透物再循环到反应区，以及分别从第二液体压下容器回收第一和第二流作为包含丁二醇和塔顶排出气体的液体底部。