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公开(公告)号：WO2016055463A1
公开(公告)日：2016-04-14
申请号：PCT/EP2015/073028
申请日：2015-10-06
Applicant: INVISTA TECHNOLOGIES S.À R.L.
Inventor： URE, Alan Macpherson , ROBERTS, Iain James Olson
Abstract: The present invention provides method for removing residues from a first process stream comprising an organic solvent, water, a derivative of the organic solvent and the residues, comprising the steps of: i) feeding the first process stream to a solvent stripper comprising a still pot and a stripper column; ii) removing a vapour stream comprising the organic solvent, water and the derivative of the organic solvent from the stripper column; and iii) removing a residue stream from the still pot; characterised in that: the still pot and the stripper column form an integrated unit and the stripper column comprises a plurality of sieve trays. The present invention further provides an apparatus for carrying out the method, and processes for the production of a purified aromatic dicarboxylic acid incorporating the method.
Abstract translation: 本发明提供了从包含有机溶剂，水，有机溶剂的衍生物和残余物的第一工艺流中除去残余物的方法，包括以下步骤：i）将第一工艺流供给到包含釜的溶剂汽提器 和汽提塔; ii）从汽提塔中除去包含有机溶剂，水和有机溶剂衍生物的蒸气流; 和iii）从所述釜中除去残余物流; 其特征在于：静止罐和汽提塔形成一体的单元，汽提塔包括多个筛板。 本发明还提供了一种用于实施该方法的装置，以及用于制备包含该方法的纯化芳族二羧酸的方法。
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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
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water and a wash stream comprising alkali metal ions within said scrubbing column; (ii) the scrubbed gas stream is withdrawn from a vent located in an upper region of the scrubbing column; and (iii)a stream comprising water, said alkali metal ions and bromide ions is withdrawn from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。
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公开(公告)号：WO2016046284A1
公开(公告)日：2016-03-31
申请号：PCT/EP2015/071910
申请日：2015-09-23
Applicant: INVISTA TECHNOLOGIES S.À R.L.
Inventor： URE, Alan Macpherson , LIMBACH, Antony Peter John
IPC: C07C51/265 , C07C51/44 , C07C51/48 , C07C63/26 , B01D11/00
CPC classification number: C07C51/16 , B01D3/143 , B01D11/0426 , B01D11/043 , B01D11/0492 , B01D17/02 , C07C51/265 , C07C51/44 , C07C51/48 , 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, comprising the steps of: i) separating a vent gas from an oxidation stage into an organic solvent-rich liquid stream and a water-rich vapour stream in a distillation stage; and ii) separating an aqueous purification mother liquor comprising organic compounds from purified aromatic dicarboxylic acid crystals in a separation stage, characterised in that the process further comprises the steps of: iii) transferring the aqueous purification mother liquor from the separation stage to an extraction stage; iv) extracting said organic compounds from the aqueous purification mother liquor by contacting the aqueous purification mother liquor at a temperature of at least 90ºC with an organic liquid in the extraction stage to form an aqueous phase and an organic phase, wherein the concentration of said organic compounds in the aqueous phase is lower than the concentration of said organic compounds in the aqueous purification mother liquor; and v) transferring the aqueous phase to said distillation stage. The present invention further provides an apparatus 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，包括以下步骤：i）将排放气体从氧化段分离成富有机溶剂的液体流 和蒸馏阶段中的富水蒸气流; 和ii）在分离阶段从纯化的芳族二羧酸晶体中分离含有有机化合物的含水纯化母液，其特征在于所述方法还包括以下步骤：iii）将含水纯化母液从分离阶段转移到萃取阶段 ; iv）通过在提取阶段中将至少90℃的温度的含水纯化母液与有机液体接触以从含水纯化母液中提取所述有机化合物以形成水相和有机相，其中所述有机物的浓度 水相中的化合物低于含水纯化母液中所述有机化合物的浓度; 和v）将水相转移到所述蒸馏阶段。 本发明还提供一种用于执行该过程的装置。
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