公开(公告)号：WO2016055542A1

公开(公告)日：2016-04-14

申请号：PCT/EP2015/073184

申请日：2015-10-07

Applicant: INVISTA TECHNOLOGIES S.À R.L.

Inventor： LIMBACH, Antony Peter John ,  URE, Alan Macpherson ,  LEONARD, Mark Christopher ,  ZHENG, Donghui

IPC: C07C51/16 ,  C07C63/26 ,  B01D3/00

CPC classification number: C07C51/265 ,  B01D1/16 ,  B01D53/68 ,  B01D53/8659 ,  B01D2251/30 ,  B01D2257/2022 ,  B01D2257/2042 ,  B01D2257/2062 ,  B01D2257/70 ,  Y02P20/154 ,  C07C63/26

Abstract: The present invention provides a process for the production of an aromatic dicarboxylic acid comprising the catalytic oxidation of a hydrocarbon precursor in an organic solvent, wherein off-gas generated by the oxidation reaction is vented to the atmosphere after treatment to remove HBr and/or Br 2 , wherein said process comprises scrubbing in a scrubbing column a gas stream derived from off-gas generated by said oxidation reaction and comprising HBr and/or Br 2 , characterised in that: (i) the gas stream is irrigated with liquid phase water and a wash stream comprising alkali metal ions within said scrubbing column; (ii) the scrubbed gas stream is withdrawn from a vent located in an upper region of the scrubbing column; and (iii)a stream comprising water, said alkali metal ions and bromide ions is withdrawn from an effluent outlet located in a lower region of the scrubbing column. The present invention further provides a scrubbing column for carrying out the process.

Abstract translation: 本发明提供一种生产芳族二羧酸的方法，其包括在有机溶剂中催化氧化烃前体，其中通过氧化反应产生的废气在处理后排放到大气中以除去HBr和/或Br 2 其中所述方法包括在洗涤塔中洗涤源自由所述氧化反应产生的废气并包含HBr和/或Br 2的气流，其特征在于：（i）气流用液相水和洗涤液 在所述洗涤塔内包含碱金属离子; （ii）洗涤气流从位于洗涤塔上部区域的排气口排出; 和（iii）包含水的流，所述碱金属离子和溴离子从位于洗涤塔的下部区域的流出物出口排出。 本发明还提供一种用于进行该方法的洗涤塔。