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    Process for the oxidative purification of terephthalic acid
    6.
    发明授权
    Process for the oxidative purification of terephthalic acid 有权
    对苯二甲酸氧化提纯工艺

    公开(公告)号：US07161027B2

    公开(公告)日：2007-01-09

    申请号：US10645734

    申请日：2003-08-21

    申请人： Ronald Buford Sheppard ,  Brent Alan Tennant ,  Thomas Earl Woodruff ,  Robert Lin

    发明人： Ronald Buford Sheppard ,  Brent Alan Tennant ,  Thomas Earl Woodruff ,  Robert Lin

    IPC分类号： C07C69/52 ,  C07C51/255 ,  C07C51/42

    CPC分类号： C07C51/47 ,  C07C51/43 ,  C07C51/487 ,  C07C63/26

    摘要： Disclosed is a process to produce a purified carboxylic acid slurry. The process comprises removing impurities from a crystallized product in a solid liquid displacement zone to form the purified carboxylic acid slurry. The purified carboxylic acid slurry is further cooled in a cooling zone and subsequently filtered and dried in a filtration and drying zone. The process produces purified carboxylic acid product having good color and low impurity levels without the use of purification steps like hydrogenation or filtrate purge.

    摘要翻译： 公开了一种生产纯化的羧酸浆料的方法。 该方法包括在固体液体置换区中从结晶产物中除去杂质以形成纯化的羧酸浆液。 将纯化的羧酸浆料在冷却区进一步冷却，随后过滤并在过滤和干燥区中干燥。 该方法产生具有良好颜色和低杂质水平的纯化羧酸产物，而不使用纯化步骤如氢化或滤液吹扫。

    Oxidation system with sidedraw secondary reactor
    8.
    发明授权
    Oxidation system with sidedraw secondary reactor 有权
    具有侧面二次反应器的氧化系统

    公开(公告)号：US08153840B2

    公开(公告)日：2012-04-10

    申请号：US12709547

    申请日：2010-02-22

    申请人： Thomas Earl Woodruff ,  Alan George Wonders

    发明人： Thomas Earl Woodruff ,  Alan George Wonders

    IPC分类号： C07C51/265 ,  C07C63/26 ,  C07C63/16

    CPC分类号： B01J10/002 ,  B01J8/1818 ,  B01J8/22 ,  B01J2219/0004 ,  C07C51/265 ,  C07C63/26

    摘要： Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.

    摘要翻译： 公开了一种用于更有效和经济地进行可氧化化合物的液相氧化的优化方法和装置。 这种液相氧化在气泡塔反应器中进行，其在相对低的温度下提供高效反应。 当氧化的化合物是对二甲苯并且来自氧化反应的产物是粗对苯二甲酸（CTA）时，可以通过更经济的技术将这种CTA产物纯化和分离，如果CTA通过常规的高温 氧化过程。

    Optimized liquid-phase oxidation
    10.
    发明授权
    Optimized liquid-phase oxidation 有权
    优化液相氧化

    公开(公告)号：US07683210B2

    公开(公告)日：2010-03-23

    申请号：US11154219

    申请日：2005-06-16

    申请人： Alan George Wonders ,  Thomas Young Lightfoot ,  Thomas Earl Woodruff ,  Charles Helton Hitchcock ,  David Lee Denton ,  Carl Norman McCurry

    发明人： Alan George Wonders ,  Thomas Young Lightfoot ,  Thomas Earl Woodruff ,  Charles Helton Hitchcock ,  David Lee Denton ,  Carl Norman McCurry

    IPC分类号： C07C51/16

    CPC分类号： C07C63/26

    摘要： Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.

    摘要翻译： 公开了一种用于更有效和经济地进行可氧化化合物的液相氧化的优化方法和装置。 这种液相氧化在气泡塔反应器中进行，其在相对低的温度下提供高效反应。 当氧化的化合物是对二甲苯并且来自氧化反应的产物是粗对苯二甲酸（CTA）时，可以通过更经济的技术将这种CTA产物纯化和分离，如果CTA通过常规的高温 氧化过程。