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water and a wash stream comprising alkali metal ions within said scrubbing column; (ii) the scrubbed gas stream is withdrawn from a vent located in an upper region of the scrubbing column; and (iii)a stream comprising water, said alkali metal ions and bromide ions is withdrawn from an effluent outlet located in a lower region of the scrubbing column.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。

公开(公告)号：WO2016062810A1

公开(公告)日：2016-04-28

申请号：PCT/EP2015/074492

申请日：2015-10-22

Applicant: INVISTA TECHNOLOGIES S.À R.L.

Inventor： LIMBACH, Antony Peter John ,  WARD, Simon Andrew ,  ZHENG, Donghui ,  GUPTA, Anuj

IPC: C07C51/43

CPC classification number: C07C51/43 ,  B01J2219/0006 ,  B01J2219/00069 ,  B01J2219/00074 ,  C07C63/26

Abstract: The present invention provides a process for the production of a purified aromatic dicarboxylic acid comprising the steps of: i) catalytically oxidizing a hydrocarbon precursor in an organic solvent to form a product stream and a vent gas in an oxidation stage; ii) separating the vent gas from the oxidation stage into an organic solvent-rich liquid stream and a water-rich vapour stream in a distillation stage; iii) condensing the water-rich vapour stream from the distillation stage into a condensate stream and a vapour stream in a first condensation stage by transferring heat from the water-rich vapour stream to a first coolant liquid flowing in a coolant system; and iv) forming a slurry of crude aromatic dicarboxylic acid crystals and an overhead vapour from the product stream from the oxidation stage in a crystallisation stage; and v) purifying the crude aromatic dicarboxylic acid crystals to yield the purified aromatic dicarboxylic acid, characterised in that the process further comprises the steps of: vi) condensing at least a portion of the overhead vapour from the crystallisation stage by transferring heat from the overhead vapour to a second coolant liquid flowing in the coolant system, wherein at least a portion of the second coolant liquid is derived from the first coolant liquid, wherein the condensing of at least a portion of the overhead vapour from the crystallisation stage is conducted in a second condensation stage comprising a first condenser; and vii) measuring the temperature of the second coolant liquid in the coolant system downstream of the first condenser and/or measuring the flow rate of the second coolant liquid in the coolant system; wherein the coolant system is configured to direct at least a portion of the second coolant liquid from a position in the coolant system downstream of the first condenser to a position in the coolant system upstream of the first condenser via a feedback system configured to cool the second coolant liquid if the measured temperature of the second coolant liquid downstream of the first condenser is greater than or equal to a first pre-set temperature and/or the measured flow rate of the second coolant liquid is less than or equal to a pre-set flow rate. The present invention further provides an apparatus for carrying out the process.

Abstract translation: 本发明提供了一种制备纯化芳族二羧酸的方法，包括以下步骤：i）在有机溶剂中催化氧化烃前体以在氧化阶段形成产物流和排放气体; ii）在蒸馏阶段将排放气体从氧化段分离成富有机溶剂的液流和富水蒸汽流; iii）通过将热量从富水蒸汽流转移到在冷却剂系统中流动的第一冷却剂液体，将来自蒸馏级的富水蒸汽流在第一冷凝阶段中冷凝成冷凝物流和蒸汽流; 和iv）在结晶阶段从来自氧化阶段的产物流形成粗芳族二羧酸晶体和塔顶蒸气的浆液; 并且v）纯化粗芳族二羧酸晶体以产生纯化的芳族二羧酸，其特征在于，所述方法还包括以下步骤：vi）通过从塔顶馏出物转移热量来冷凝来自结晶阶段的塔顶蒸气的至少一部分 蒸气连接到在冷却剂系统中流动的第二冷却剂液体，其中第二冷却剂液体的至少一部分来自第一冷却剂液体，其中来自结晶阶段的塔顶蒸气的至少一部分的冷凝在 第二冷凝段包括第一冷凝器; 以及vii）测量第一冷凝器下游的冷却剂系统中的第二冷却剂液体的温度和/或测量冷却剂系统中的第二冷却剂液体的流量; 其中所述冷却剂系统被构造成将所述第二冷却剂液体的至少一部分从所述第一冷凝器下游的所述冷却剂系统中的位置引导到所述冷却剂系统在所述第一冷凝器的上游的位置，所述反馈系统经配置以冷却所述第二冷凝器 如果第一冷凝器下游的第二冷却剂液体的测量温度大于或等于第一预设温度和/或第二冷却剂液体的测量流量小于或等于预设值，则冷却剂液体 流量。 本发明还提供一种用于执行该过程的装置。