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    Method for producing high purity terephthalic acid
    4.
    发明授权
    Method for producing high purity terephthalic acid 有权
    生产高纯对苯二甲酸的方法

    公开(公告)号：US07262323B2

    公开(公告)日：2007-08-28

    申请号：US10574273

    申请日：2004-09-30

    申请人： Hideaki Fujita ,  Hiroshi Machida ,  Nobuo Namiki ,  Yoshio Waguri

    发明人： Hideaki Fujita ,  Hiroshi Machida ,  Nobuo Namiki ,  Yoshio Waguri

    IPC分类号： C07C51/16 ,  C07C17/093 ,  A61L9/00

    CPC分类号： C07C51/47 ,  C07C51/487 ,  Y02P20/52 ,  C07C63/26

    摘要： A method for producing high purity terephthalic acid wherein a slurry having an acetic acid solvent and, dispersed therein, crude terephthalic acid crystals which has been prepared by subjecting a p-alkyl benzene to a liquid phase oxidation in a solvent of acetic acid is continuously converted to a water slurry by the mother liquid exchange, and then the resultant water slurry is subjected to a hydrogenation treatment, which comprises introducing the above acetic acid slurry to a tower having a center axis having a plurality of agitating blades at the top thereof, to form a region having a high concentration of terephthalic acid crystals in the tower through the sedimentation of the terephthalic acid crystals, supplying the water for substitution to the bottom of the tower in such a manner to form an upward water flow while generating a revolving flow of the high concentration region by the rotation of the agitation blade, to thereby subject said terephthalic acid crystals and said upward water flow to a counter-flow contact, and taking out the acetic acid from a portion being upper than the supply port for the acetic acid slurry while withdrawing the terephthalic acid crystals having contacted with the upward water flow together with the water for substitution from the tower bottom. The above method allows the substitution of the acetic acid solvent of the acetic acid slurry with water, with a high substitution percentage.

    摘要翻译： 一种生产高纯度对苯二甲酸的方法，其中将具有乙酸溶剂和分散在其中的粗对苯二甲酸晶体的浆料在乙酸的溶剂中经由对烷基苯进行液相氧化而制备， 通过母液交换到水浆中，然后对所得水浆进行氢化处理，其包括将上述乙酸浆料引入到其顶部具有多个搅拌叶片的中心轴的塔上，至 通过对苯二甲酸晶体的沉降在塔中形成具有高浓度对苯二甲酸晶体的区域，将水替代为塔的底部，以形成向上的水流，同时产生 通过搅拌叶片的旋转而产生高浓度区域，从而使所述对苯二甲酸晶体和所述上部流动 ard水流动到逆流接触，并从乙酸浆料供应口上方的一部分取出乙酸，同时将与向上的水接触的对苯二甲酸晶体与水一起取出，以供替代 塔底。 上述方法允许乙酸溶剂的乙酸溶液用水替代，取代率高。

    Process for producing a hydrogenation product of an aromatic carboxylic acid
    6.
    发明授权
    Process for producing a hydrogenation product of an aromatic carboxylic acid 失效
    制备芳族羧酸的氢化产物的方法

    公开(公告)号：US06541662B2

    公开(公告)日：2003-04-01

    申请号：US10021430

    申请日：2001-12-19

    申请人： Hiroshi Machida ,  Ko Kedo ,  Fumiya Zaima

    发明人： Hiroshi Machida ,  Ko Kedo ,  Fumiya Zaima

    IPC分类号： C07C6109

    CPC分类号： C07C51/36 ,  C07C61/12 ,  C07C61/125 ,  C07C61/09

    摘要： A process for producing a hydrogenation product of aromatic carboxylic acid which comprises continuously producing the hydrogenation product of aromatic carboxylic acid by hydrogenating an aromatic carboxylic acid having a melting point of 250° C. or higher in a solvent in the presence of a solid catalyst, wherein the hydrogenation is conducted in a condition such that substantially the entire amount of the aromatic carboxylic acid of a raw material is dissolved in the solvent by recycling a portion of a reaction liquid taken out of a reactor into the reactor. An aromatic carboxylic acid having a high melting point and hardly soluble in solvents can be hydrogenated at a suitable reaction temperature in accordance with a continuous process without using a great amount of a solvent and the reaction product of the object compound can be produced very efficiently.

    摘要翻译： 一种芳族羧酸的氢化产物的制造方法，其特征在于，在固体催化剂存在下，通过在溶剂中氢化熔点为250℃以上的芳香族羧酸，连续制造芳香族羧酸的氢化物， 其特征在于，氢化反应是将从反应器中取出的反应液的一部分再循环到反应器中，将原料的芳香族羧酸的总量全部溶解在溶剂中的方式进行。 可以在不使用大量溶剂的情况下，根据连续方法在合适的反应温度下氢化不溶于溶剂的高熔点，并且可以非常有效地制备目标化合物的反应产物。

    Process for producing dimethyl 2,6-naphthalene-dicarboxylate
    7.
    发明授权
    Process for producing dimethyl 2,6-naphthalene-dicarboxylate 失效
    2,6-萘二甲酸二甲酯的制备方法

    公开(公告)号：US5436364A

    公开(公告)日：1995-07-25

    申请号：US263466

    申请日：1994-06-22

    申请人： Seiji Uchiyama ,  Hiroshi Machida ,  Rieko Nakano ,  Ryuji Hasemi

    发明人： Seiji Uchiyama ,  Hiroshi Machida ,  Rieko Nakano ,  Ryuji Hasemi

    IPC分类号： C07C67/08 ,  C07C69/76

    CPC分类号： C07C67/08

    摘要： A process for producing dimethyl 2,6-naphthalene-dicarboxylate by reacting 2,6-naphthalene-dicarboxylic acid with methanol which comprises effecting the reaction at 200.degree. to 350.degree. C. in the presence of trimethyl trimellitate as an essential solvent and optionally, at least one solvent selected from methyl benzoate, methyl toluate and dimethyl o-phthalate preferably by at least two-stage continuous reaction method. The above process is capable of enhancing the rate of esterification reaction and producing purified objective product in high yield for a long period of time in a stable operation without causing any operational trouble such as corrosion and clogging the production equipment.

    摘要翻译： 2,6-萘二甲酸与甲醇的反应生产2,6-萘二甲酸二甲酯的方法，该方法包括在偏苯三酸三甲酯作为必需溶剂存在下，在200-350℃下进行反应， 至少一种选自苯甲酸甲酯，甲基甲酸甲酯和邻苯二甲酸二甲酯的溶剂优选通过至少两步连续反应方法。 上述方法能够在稳定的操作中长时间提高酯化反应速率和高产率纯化的目标产物，而不会引起任何操作故障，例如腐蚀和堵塞生产设备。

    Apparatus and method for protecting fuel cell
    8.
    发明授权
    Apparatus and method for protecting fuel cell 有权
    燃料电池保护装置及方法

    公开(公告)号：US07442455B2

    公开(公告)日：2008-10-28

    申请号：US10623011

    申请日：2003-07-17

    申请人： Yasushi Kojima ,  Takashi Sasaki ,  Hiroshi Machida

    发明人： Yasushi Kojima ,  Takashi Sasaki ,  Hiroshi Machida

    IPC分类号： H01M8/12

    CPC分类号： H01M8/04679 ,  H01M8/04223 ,  H01M8/04228 ,  H01M8/04388 ,  H01M8/04395 ,  H01M8/04432 ,  H01M8/04462 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/04753 ,  H01M8/04783 ,  H01M8/0491 ,  H01M8/04992 ,  H01M8/241 ,  H01M8/2457

    摘要： A memory unit stores maps of predetermined determination threshold values for detection values detected by a hydrogen sensor according to an operating state of a fuel cell such as a difference in pressure between reaction gases at an anode and a cathode, supply pressure of the reaction gases, supply flow rate of the reaction gases and generated current of the fuel cell. A control unit obtains a predetermined determination threshold value from the memory unit based on the operating state of the fuel cell. Then, the detection value outputted from the hydrogen sensor and the determination threshold value obtained from the memory unit are compared, and in the event that the detection value is determined to exceed the determination threshold value, a predetermined protecting process is implemented for the fuel cell.

    摘要翻译： 存储单元根据燃料电池的操作状态存储由氢传感器检测的检测值的预定判定阈值的映射图，例如阳极和阴极之间的反应气体之间的压力差，反应气体的供给压力， 提供反应气体的流量和燃料电池的产生电流。 控制单元基于燃料电池的运行状态从存储器单元获得预定的确定阈值。 然后，比较从氢传感器输出的检测值和从存储器单元获得的判定阈值，并且在检测值被确定为超过判定阈值的情况下，对燃料电池进行预定的保护处理 。