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1. 发明授权

US5099064A Method for increasing conversion efficiency for oxidation of an alkyl aromatic compound to an aromatic carboxylic acid 失效
标题翻译：提高烷基芳族化合物氧化成芳香族羧酸的转化效率的方法
公开(公告)号：US5099064A
公开(公告)日：1992-03-24
申请号：US814655
申请日：1985-12-30
申请人： William F. Huber, Jr. , Martin A. Zeitlin
发明人： William F. Huber, Jr. , Martin A. Zeitlin
IPC分类号： C07C51/265
CPC分类号： B01J19/0066 , C07C51/265 , B01J2219/0013
摘要： A method and system for increasing conversion efficiency of aromatic alkyl reactant to aromatic carboxylic acid product and for improving the quality of the product, are disclosed. The method and system provide for the continuous production of an aromatic carboxylic acid by the liquid phase, exothermic oxidation of an aromatic alkyl in a vaporizable solvent in an oxidation reactor. The reactor makes use of a vented, overhead condenser system and a separator system for condensation of vaporized reactor material, separation of the condensed solvent therefrom, and reflux of separated solvent back into the reactor. The improvement comprises combining the reactor liquid feedstream with the refluxed solvent upstream from the oxidation reactor.
摘要翻译：公开了一种用于提高芳族烷基反应物对芳族羧酸产物的转化效率和提高产物质量的方法和系统。该方法和系统提供通过液相连续生产芳族羧酸，在氧化反应器中在可蒸发溶剂中芳族烷基的放热氧化。反应器利用通风的塔顶冷凝器系统和用于冷凝蒸发的反应器材料的分离器系统，从其中分离冷凝的溶剂以及将分离的溶剂回流回反应器。改进之处在于将反应器液体进料流与氧化反应器上游的回流溶剂组合。

2. 发明授权

US5211924A Method and apparatus for increasing conversion efficiency and reducing power costs for oxidation of an aromatic alkyl to an aromatic carboxylic acid 失效
标题翻译：用于提高转化效率并降低将芳族烷基氧化成芳族羧酸的功率成本的方法和装置
公开(公告)号：US5211924A
公开(公告)日：1993-05-18
申请号：US162043
申请日：1988-02-29
申请人： Myon K. Lee , William F. Huber, Jr.
发明人： Myon K. Lee , William F. Huber, Jr.
IPC分类号： B01F7/16 , B01J19/18 , C07C51/265
CPC分类号： B01F7/16 , B01J19/0066 , B01J19/18 , B01J19/1868 , C07C51/265
摘要： Improved mixing performance with reduced power input is obtained in an agitated oxidation reactor for converting an aromatic alkyl to the corresponding aromatic carboxylic acid by decreasing the clearance between the lowermost impeller element and the reactor bottom and by providing a flat blade turbine as the upper impeller element.
摘要翻译：在搅拌的氧化反应器中获得改进的混合性能，通过减少最下面的叶轮元件和反应器底部之间的间隙，并通过提供平面叶片涡轮机作为上部叶轮元件，将芳族烷基转化成相应的芳族羧酸。

3. 发明授权

US06642407B2 Production, purification and polymerization of aromatic dicarboxylic acids 有权
标题翻译：芳香族二羧酸的生产，纯化和聚合
公开(公告)号：US06642407B2
公开(公告)日：2003-11-04
申请号：US10133083
申请日：2002-04-26
申请人： Krishna Kulai Rao , Russell D. Sellen , Xiaobing Feng , James Spanswick , William F. Huber, Jr.
发明人： Krishna Kulai Rao , Russell D. Sellen , Xiaobing Feng , James Spanswick , William F. Huber, Jr.
IPC分类号： C07C6748
CPC分类号： C07C51/493 , C07C63/38
摘要： This invention provides a process for purifying the crude aromatic dicarboxylic acids produced by oxidation of dialkyl aromatic hydrocarbons and for using the purified acids in the preparation of polyethylene terephthalate, polyethylene naphthalate and other polyesters. The invention simplifies the manufacturing process by converting the crude aromatic acids into bis-glycol esters in an esterification reactor 4, from which the esterified partial oxidation impurities present in the oxidation product are removed by distillation in distillation tower 5. After removal of the volatile impurities, the dicarboxylic acid esters can separated by distillation in distillation tower 6 or by crystallization and converted to polyesters by polycondensation. The volatile impurities removed as overhead from tower 5 can be recycled as stream 16 to the oxidation reactor where they act as oxidation promoters thereby optionally allowing for a bromine-free oxidation process for dialkyl aromatic hydrocarbons.
摘要翻译：本发明提供了一种净化由二烷基芳烃氧化产生的粗芳族二羧酸和在制备聚对苯二甲酸乙二醇酯，聚萘二甲酸乙二醇酯和其它聚酯中使用纯化酸的方法。本发明通过在酯化反应器4中将粗芳香酸转化为双 - 二醇酯来简化制造过程，通过在蒸馏塔5中蒸馏除去存在于氧化产物中的酯化的部分氧化杂质。除去挥发性杂质，二羧酸酯可以通过在蒸馏塔6中蒸馏或通过结晶分离，并通过缩聚转化成聚酯。从塔架5塔顶除去的挥发性杂质可作为料流16再循环到氧化反应器中，在该反应器中它们作为氧化促进剂，从而任选地允许二烷基芳族烃的无溴氧化方法。

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