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。

公开(公告)号：WO2016055466A1

公开(公告)日：2016-04-14

申请号：PCT/EP2015/073033

申请日：2015-10-06

Applicant: INVISTA TECHNOLOGIES S.À R.L.

Inventor： JACKSON, Christopher Howard ,  LIMBACH, Antony Peter John ,  GUPTA, Anuj ,  ROBERTS, Iain James Olson

IPC: C07C51/42 ,  C07C51/44 ,  C07C51/48 ,  C07C63/26 ,  B01D3/14

CPC classification number: B01D3/009 ,  C07C51/44 ,  C07C51/48 ,  Y02P20/127 ,  C07C63/26

Abstract: The present invention provides a method for recovering a derivative of an organic solvent from a first process stream comprising the organic solvent, water, and the derivative of the organic solvent in a process for the production of an aromatic dicarboxylic acid comprising the catalytic oxidation of a hydrocarbon precursor in the organic solvent in an oxidation reactor, comprising the steps of: i) feeding the first process stream to a stripping device comprising a stripping column and sump; ii) removing a purified organic solvent stream from the sump; and iii) transferring an overhead stream from the stripping column to a condenser, wherein the mass concentration of the derivative of the organic solvent in the purified organic solvent stream removed from the sump in step ii) is lower than the mass concentration of the derivative of the organic solvent in the first process stream fed to the stripping device in step i), and, optionally, wherein the mass concentration of the derivative of the organic solvent in the overhead stream transferred to the condenser in step iii)is greater than the mass concentration of the derivative of the organic solvent in the first process stream fed to the stripping device in step i). The present invention further provides apparatus for carrying out the method, and a process for the production of an aromatic dicarboxylic acid incorporating the method.

Abstract translation: 本发明提供了在生产芳族二羧酸的方法中从包含有机溶剂，水和有机溶剂的衍生物的第一工艺流中回收有机溶剂衍生物的方法，所述方法包括催化氧化 在氧化反应器中的有机溶剂中的烃前体，包括以下步骤：i）将第一工艺流进料到包括汽提塔和油槽的汽提装置中; ii）从贮槽除去纯化的有机溶剂流; 和iii）将顶部物流从汽提塔转移到冷凝器，其中在步骤ii）中从集油器中除去的纯化有机溶剂流中的有机溶剂衍生物的质量浓度低于衍生物的质量浓度 在步骤i）中进料到汽提装置的第一工艺流中的有机溶剂，以及任选地，其中在步骤iii）中转移到冷凝器中的塔顶馏出物中的有机溶剂衍生物的质量浓度大于质量 在步骤i）中在供给到汽提装置的第一工艺流中有机溶剂的衍生物的浓度。 本发明还提供了用于实施该方法的装置和一种制备包含该方法的芳族二羧酸的方法。

公开(公告)号：WO2016055456A2

公开(公告)日：2016-04-14

申请号：PCT/EP2015/073021

申请日：2015-10-06

Applicant: INVISTA TECHNOLOGIES S.À R.L.

Inventor： LIMBACH, Antony Peter John ,  CHANDRA, Akhilesh ,  MATHERS, Lewis Robert ,  GUPTA, Anuj

IPC: C07C51/265

CPC classification number: C07C51/265 ,  C07C51/43 ,  C07C51/487 ,  C07C63/26

Abstract: The present invention provides a method for raising steam in 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) heating a crude aromatic dicarboxylic acid slurry to form a crude aromatic dicarboxylic acid solution; ii) transferring the crude aromatic dicarboxylic acid solution to a hydrogenation reactor; iii) transferring a purified aromatic dicarboxylic acid solution from the hydrogenation reactor to a series of one or more crystallisers; and iv) transferring heat from a crystalliser vent stream from the series of one or more crystallisers to a water stream in a steam raiser to generate steam. The present invention further provides an apparatus for carrying out the method, and a process for the production of an aromatic dicarboxylic acid incorporating the method.

Abstract translation: 本发明提供了一种在生产芳族二羧酸的方法中用于升高蒸汽的方法，该方法包括在有机溶剂中催化氧化烃前体，该方法包括以下步骤：i）将 粗芳族二羧酸淤浆以形成粗芳族二羧酸溶液; ii）将粗芳族二羧酸溶液转移到氢化反应器中; iii）将纯化的芳族二羧酸溶液从氢化反应器转移到一系列一种或多种结晶器中; 和iv）将来自一系列一个或多个结晶器的结晶器排放流的热量传递给蒸汽提升器中的水流以产生蒸汽。 本发明进一步提供了用于实施该方法的设备和用于生产引入该方法的芳族二羧酸的方法。