INTEGRATED PURIFIED TEREPHTHALIC ACID PRODUCTION AND POLYESTER POLYMERIZATION PLANT WITH CONDENSATE RECYCLING
    21.
    发明申请
    INTEGRATED PURIFIED TEREPHTHALIC ACID PRODUCTION AND POLYESTER POLYMERIZATION PLANT WITH CONDENSATE RECYCLING 审中-公开
    一体化纯化的过硫酸生产和聚酯聚合工厂与冷凝循环

    公开(公告)号:WO2016059127A1

    公开(公告)日:2016-04-21

    申请号:PCT/EP2015/073810

    申请日:2015-10-14

    CPC classification number: C07C51/265 C07C51/43 C07C51/47 C08G63/78 C07C63/26

    Abstract: The present invention provides a method for the production of purified terephthalic acid crystals in an integrated terephthalic acid – polyester plant comprising the steps of: i) providing a stream of purified terephthalic acid crystals in an aqueous medium; ii) separating the purified terephthalic acid crystals from the aqueous medium in a filtration zone; and iii) washing the purified terephthalic acid crystals with an aqueous wash liquid, characterised in that at least a portion of the aqueous wash liquid is derived from an aqueous condensate liquor from the polyester plant.

    Abstract translation: 本发明提供了一种在对苯二甲酸 - 聚酯装置整体中生产纯对苯二甲酸晶体的方法,包括以下步骤:i)在水性介质中提供纯化的对苯二甲酸晶体流; ii)在过滤区域中将纯化的对苯二甲酸晶体与水性介质分离; 和iii)用水性洗涤液洗涤纯化的对苯二甲酸晶体,其特征在于,所述水性洗涤液体的至少一部分来自所述聚酯装置的水性浓缩液。

    METHOD FOR REMOVING RESIDUES BY MEANS OF A STRIPPING DEVICE
    22.
    发明申请
    METHOD FOR REMOVING RESIDUES BY MEANS OF A STRIPPING DEVICE 审中-公开
    通过剥离装置去除残留物的方法

    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

    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。

    FILTER FOR AROMATIC CARBOXYLIC ACIDS
    25.
    发明申请
    FILTER FOR AROMATIC CARBOXYLIC ACIDS 审中-公开
    芳香羧酸过滤器

    公开(公告)号:WO2015162281A1

    公开(公告)日:2015-10-29

    申请号:PCT/EP2015/058992

    申请日:2015-04-24

    CPC classification number: C07C51/47 C07C51/48 C07C63/26

    Abstract: A rotary filter comprising (i) a housing comprising a first wash zone comprising a first wash fluid input zone, a final wash zone comprising a final wash fluid input zone, and one or more intervening wash zone(s) each comprising a wash fluid input zone; (ii) a control head comprising a first wash fluid output zone, a final wash fluid output zone, and one or more intervening wash fluid output zone(s); and (iii) a filter drum positioned within the housing and rotatable about its axis within the housing; and (iv) means to transfer wash fluid in counter-current flow, relative to the direction of rotation of the filter drum, from a wash output zone to a wash input zone of a preceding wash zone; characterised in that the rotary filter is configured to pass wash fluid via the filter drum from a wash fluid input zone (IZ n ) to the wash fluid output zone (OZ n ) of the same wash zone (n) and additionally to the wash fluid output zone of a preceding wash zone.

    Abstract translation: 一种旋转过滤器,包括(i)壳体,其包括第一洗涤区域,所述第一洗涤区域包括第一洗涤流体输入区域,包括最终洗涤流体输入区域的最终洗涤区域以及一个或多个中间洗涤区域,每个洗涤区域包括洗涤流体输入 区; (ii)控制头,包括第一洗涤流体输出区,最终洗涤流体输出区和一个或多个中间洗涤流体输出区; 以及(iii)过滤鼓,其定位在所述壳体内并且可绕其轴线在所述壳体内旋转; 和(iv)将洗涤流体相对于过滤鼓的旋转方向从洗涤输出区域转移到前一洗涤区域的洗涤输入区域的逆流流动的装置; 其特征在于,所述旋转过滤器被构造成使洗涤流体经由所述过滤鼓从洗涤流体输入区(IZn)传递到所述洗涤区(n)的洗涤流体输出区(OZn),并且还包括所述洗涤流体输出区 的前一个洗涤区。

    NYLON SALT SOLUTION PRODUCTION FROM A PARTIALLY BALANCED ACID SOLUTION
    30.
    发明申请
    NYLON SALT SOLUTION PRODUCTION FROM A PARTIALLY BALANCED ACID SOLUTION 审中-公开
    尼龙盐溶液从部分平衡酸溶液中的生产

    公开(公告)号:WO2014179065A1

    公开(公告)日:2014-11-06

    申请号:PCT/US2014/034222

    申请日:2014-04-15

    Inventor: WELCH, Robert J.

    Abstract: A continuous process for producing a nylon salt solution prepared using a liquid partially balanced acid 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 an in-line disperser; feeding a first feed stream of diamine to the in-line disperser 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 acid solution. A nylon salt solution is prepared from the liquid partially balanced acid 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在线分散器中的进料管道来制备; 将二胺的第一进料流供给到在线分散器中以形成包含32重量%至46重量%的二羧酸,11重量%至15重量%的二胺之间以及39重量%之间的分散体和 57重量%的水,并在50℃至60℃的温度下加热分散体以形成部分平衡的酸溶液。 从液体部分平衡的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。

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