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    PRODUCTION OF AN AROMATIC DICARBOXYLIC ACID
    52.
    发明申请
    PRODUCTION OF AN AROMATIC DICARBOXYLIC ACID 审中-公开
    生产芳香二羧酸

    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。

    METHOD FOR RECOVERING METHYL ACETATE
    53.
    发明申请
    METHOD FOR RECOVERING METHYL ACETATE 审中-公开
    回收乙酸甲酯的方法

    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。

    PRODUCTION OF AN AROMATIC DICARBOXYLIC ACID
    54.
    发明申请
    PRODUCTION OF AN AROMATIC DICARBOXYLIC ACID 审中-公开
    生产芳香二羧酸

    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。

    IMPROVED BUTANEDIOL MANUFACTURING PROCESS
    55.
    发明申请
    IMPROVED BUTANEDIOL MANUFACTURING PROCESS 审中-公开
    改进的丁醇制造工艺

    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。

    PROCESS FOR PRODUCING PARTIALLY BALANCED ACID SOLUTION WITH VESSEL HAVING A DISPERSER HEAD FOR NYLON SALT PRODUCTION
    56.
    发明申请
    PROCESS FOR PRODUCING PARTIALLY BALANCED ACID SOLUTION WITH VESSEL HAVING A DISPERSER HEAD FOR NYLON SALT PRODUCTION 审中-公开
    用于生产具有用于尼龙盐生产的分散头的容器的部分平衡酸溶液的方法

    公开(公告)号：WO2015094394A1

    公开(公告)日：2015-06-25

    申请号：PCT/US2014/034228

    申请日：2014-04-15

    Applicant: INVISTA TECHNOLOGIES S.À R.L.

    Inventor： WELCH, Robert J.

    IPC: C07C51/41 ,  C07C55/14 ,  C07C55/02 ,  C07C209/68 ,  C07C211/09 ,  C07C211/12 ,  C08G69/28

    CPC classification number: C07C209/68 ,  C07C51/412 ,  C08G69/28 ,  C07C211/09 ,  C07C211/12

    Abstract: A continuous process for producing a nylon salt solution prepared using a liquid partially balanced adipic solution enriched in dicarboxylic acid, and in particular adipic acid. The liquid feed is prepared by metering dicarboxylic acid powder, based on weight, from a loss-in-weight feeder to a feeding conduit that transfers the dicarboxylic acid powder into a vessel comprising a disperser head; feeding a first feed stream of diamine to the vessel to form a dispersion comprising between 32 wt.% and 46 wt.% dicarboxylic acid, between 11 wt.% and 15 wt.% diamine, and between 39 wt.% and 57 wt.% water, and heating the dispersion at temperature between 50C and 60C to form a partially balanced adipic solution. A nylon salt solution is prepared from the liquid partially balanced adipic solution and continuously withdrawn into a storage tank. The nylon salt solution has a uniform pH and is suitable for producing nylon polymers.

    Abstract translation: 制备使用富含二羧酸，特别是己二酸的液体部分平衡的己二酸溶液制备的尼龙盐溶液的连续方法。 液体进料通过将二羧酸粉末基于重量从重量损失进料器计量到将二羧酸粉末转移到包含分散头的容器中的进料管道中来制备; 将二胺的第一进料流供给到容器中以形成包含32重量％至46重量％二羧酸，11重量％至15重量％二胺之间以及39重量％至57重量％之间的分散体。 ％水，并在50℃和60℃之间的温度下加热分散体以形成部分平衡的己二酸溶液。 从液体部分平衡的己二酸溶液制备尼龙盐溶液，并连续地取出到储罐中。 尼龙盐溶液具有均匀的pH，适用于生产尼龙聚合物。

    IMPROVED BUTYNEDIOL PROCESS
    58.
    发明申请
    IMPROVED BUTYNEDIOL PROCESS 审中-公开
    改进的丁二酰亚胺法

    公开(公告)号：WO2015006361A1

    公开(公告)日：2015-01-15

    申请号：PCT/US2014/045809

    申请日：2014-07-08

    Applicant: INVISTA TECHNOLOGIES S.à r.l.

    Inventor： AIRD, Graham R. ,  GAUSE, Jason C. ,  GOBBY, Darren

    IPC: B01J8/00 ,  C07C29/42 ,  C07C33/046

    CPC classification number: C07C29/42 ,  B01J8/0025 ,  B01J8/006 ,  B01J8/228 ,  C07C29/76 ,  C07C33/046

    Abstract: The present invention provides an improved process for manufacturing and recovering butynediol from a reaction mixture comprising an aqueous solution containing formaldehyde, acetylene and suspended catalyst solids in a particular reaction zone, such as a reactor vessel devoid of internal filter assemblies, whereby a product slurry stream comprising butynediol and suspended catalyst solids is removed from the reaction zone and fed to a filter zone external from the reaction zone, the product slurry stream being moved to the external filter zone by injection of a composition comprising acetylene at a point between the reaction zone and the filter zone.

    Abstract translation: 本发明提供了一种用于在反应混合物中制备和回收丁炔二醇的改进方法，该反应混合物包含在特定反应区（例如没有内部过滤器组件的反应器容器）中含有甲醛，乙炔和悬浮催化剂固体的水溶液，由此产物浆料流 包括丁炔二醇和悬浮的催化剂固体从反应区中除去并进料到反应区外部的过滤区，产物浆料流通过在反应区和反应区之间的一点注入包含乙炔的组合物而移动到外部过滤区 过滤区。

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