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公开(公告)号：US4197412A
公开(公告)日：1980-04-08
申请号：US952193
申请日：1978-10-17
IPC分类号： C07C63/26 , B01J23/00 , B01J27/00 , B01J27/08 , B01J31/00 , C07B61/00 , C07C51/00 , C07C51/265 , C07C67/00 , C07C51/42
CPC分类号： B01J27/08 , C07C51/265 , Y02P20/52
摘要： A process for the continuous preparation of pure terephthalic acid by oxidation of p-xylene with molecular oxygen in acetic acid solvent comprising conducting the oxidation at a temperature of 205.degree. to 230.degree. C. in the presence of an oxidation catalyst comprising (a) a cobalt compound in an amount of at least 120 ppm and less than 200 ppm as cobalt based on the weight of solvent, (b) a manganese compound sufficient to provide a manganese to cobalt weight ratio of 0.5 to 1.5 and (c) a bromine compound selected from hydrogen bromide, cobalt bromide and manganese bromide in an amount of 200 to 1,000 ppm as bromine based on the weight of solvent, while the water content of the liquid phase of the reaction system is kept at 4 to 14 percent by weight.
摘要翻译： 一种通过在乙酸溶剂中用分子氧氧化对二甲苯来连续制备纯对苯二甲酸的方法，包括在氧化催化剂存在下在205-230℃的温度下进行氧化，所述氧化催化剂包含（a） 钴化合物的量为至少120ppm且小于200ppm，作为钴，基于溶剂的重量，（b）锰化合物足以提供锰与钴的重量比为0.5至1.5和（c）溴化合物 选自溴化物，溴化钴和溴化锰，其量为基于溶剂重量的溴为200-1,000ppm，反应体系的液相的水含量保持在4至14重量％。
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公开(公告)号：US4051178A
公开(公告)日：1977-09-27
申请号：US694361
申请日：1976-06-09
CPC分类号： C07C51/265 , Y02P20/52
摘要： There is disclosed a process for producing terephthalic acid in which the reaction temperature range and the proportion of catalyst components of a cobalt compound, a manganese compound and at least one bromine compound are specifically chosen to produce a high grade terephthalic acid suitable for direct polycondensation in the production of polyester.
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3.发明授权Process for preparing terephthalic acid by the catalytic oxidation with air of p-xylene in a water containing acetic acid solvent 失效通过在含有乙酸溶剂的水中的对二甲苯的空气进行催化氧化制备对苯二甲酸的方法
公开(公告)号：US4593122A
公开(公告)日：1986-06-03
申请号：US635264
申请日：1984-07-27
CPC分类号： C07C51/265 , Y02P20/52
摘要： A process for producing terephthalic acid from p-xylene continuously, wherein p-xylene is oxidized to terephthalic acid by air in the presence of a catalyst containing cobalt, manganese and bromine at a temperature of 180.degree. to 230.degree. C. in a water containing acetic acid solvent in which the concentration of oxygen gas contained in an exhaust gas obtained from the reaction vessel used for oxidizing p-xylene is 2 to 8% by volume, said process comprising, (a) preparing an oxidation exhaust gas by condensing a gas withdrawn from said reaction vessel for removing condensates from said gas, (b) dividing the prepared oxidation exhaust gas into a discharged gas and a recycled gas, in which the volume ratio of said recycled gas to said discharged gas is 0.3 to 5, said discharged gas being exhausted to the outside of the reaction system, (c) supplying continuously said recycled gas to the liquid phase of said reaction vessel, and (d) carrying out the oxidation reaction of p-xylene under reaction pressure higher than the pressure of the reaction system when gas is not recycled to the system.
摘要翻译： 一种从对二甲苯连续生产对苯二甲酸的方法，其中在含有钴，锰和溴的催化剂的存在下，在180-230℃的温度下，在含水的溶液中，将对二甲苯在空气中氧化成对苯二甲酸 乙酸溶剂，其中从用于氧化对二甲苯的反应容器获得的废气中所含的氧气浓度为2〜8体积％，所述方法包括：（a）通过冷凝气体制备氧化废气 从所述反应容器取出用于从所述气体中除去冷凝物，（b）将所制备的氧化废气分成排放气体和再循环气体，其中所述再循环气体与所述排放气体的体积比为0.3至5，所述排放 气体被排出到反应系统的外部，（c）连续地将所述再循环气体供应到所述反应容器的液相，和（d）在反应下进行对二甲苯的氧化反应 当气体不再循环到系统时，离子压力高于反应体系的压力。
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公开(公告)号：US4560793A
公开(公告)日：1985-12-24
申请号：US306762
申请日：1981-09-29
IPC分类号： C07C63/26 , B01J27/00 , B01J31/00 , C07B61/00 , C07C51/00 , C07C51/265 , C07C67/00 , C07C51/16
CPC分类号： C07C51/265 , Y02P20/52
摘要： There is disclosed a process for the production of terephthalic acid by oxidizing para-xylene with molecular oxygen in which substantially all of the methyl acetate present in the vapor evolved from the reactor is recovered and circulated into the reactor.
摘要翻译： 公开了通过用分子氧氧化对二甲苯来生产对苯二甲酸的方法，其中存在于从反应器中放出的蒸气中的基本上所有的乙酸甲酯都被回收并循环到反应器中。
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公开(公告)号：US4772748A
公开(公告)日：1988-09-20
申请号：US845497
申请日：1986-03-31
IPC分类号： C07C63/26 , C07C51/00 , C07C51/265 , C07C67/00
CPC分类号： C07C51/265
摘要： Disclosed herein is a process for producing highly pure terephthalic acid which forms polyesters of a particularly favorable color tone, the process comprising the steps ofoxidizing p-xylene, thereby obtaining a mixture containing terephthalic acid,subsequently further oxidizing the thus obtained mixture at not higher temperature than that of the first oxidation step,still further oxidizing the reaction mixture of the second oxidation step at a higher temperature than that of the first oxidation step andtreating the reaction mixture obtained by the third step of oxidation by bringing thereof into contact with molecular oxygen.
摘要翻译： 本文公开了一种生产高纯度对苯二甲酸的方法，其形成特别有利色调的聚酯，该方法包括氧化对二甲苯的步骤，从而获得含有对苯二甲酸的混合物，随后进一步氧化由此得到的混合物不高 温度比第一氧化步骤的温度高，进一步氧化第二氧化步骤的反应混合物的温度高于第一氧化步骤，并且通过使其与分子的接触处理通过第三氧化步骤获得的反应混合物 氧。
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公开(公告)号：US4562285A
公开(公告)日：1985-12-31
申请号：US693232
申请日：1985-01-22
IPC分类号： C07C51/265 , C07C51/44 , C07C51/16
CPC分类号： C07C51/265 , C07C51/44
摘要： There is disclosed a process for producing terephthalic acid in which the mother liquor of the terephthalic acid slurry resulting from the oxidation of para-xylene, from which terephthalic acid has been separated is subjected to distillation to recover at least a portion of methyl acetate present therein, the recovered methyl acetate being circulated into the reactor.
摘要翻译： 公开了一种生产对苯二甲酸的方法，其中将对苯二甲酸氧化的对苯二甲酸浆液的母液从其中分离出对苯二甲酸进行蒸馏以回收其中存在的至少一部分乙酸甲酯 回收的乙酸甲酯循环到反应器中。
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公开(公告)号：US4329493A
公开(公告)日：1982-05-11
申请号：US160541
申请日：1980-06-18
IPC分类号： C07C63/26 , B01J27/00 , B01J31/00 , C07B61/00 , C07C51/00 , C07C51/265 , C07C67/00 , C07C51/16
CPC分类号： C07C51/265 , Y02P20/52
摘要： A process is disclosed a process for the production of terephthalic acid by oxidizing para-xylene with molecular oxygen in which substantially all of the methyl acetate present in the vapor evolved from the reactor is recovered and circulated into the reactor.
摘要翻译： 公开了通过用分子氧氧化对二甲苯来生产对苯二甲酸的方法，其中存在于从反应器中放出的蒸气中的基本上所有的乙酸甲酯都被回收并循环到反应器中。
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公开(公告)号：US5557009A
公开(公告)日：1996-09-17
申请号：US550935
申请日：1995-10-31
IPC分类号： C07C51/47 , C07C51/265
CPC分类号： C07C51/47
摘要： A process for preparing an aqueous slurry of terephthalic acid, which comprises oxidizing p-xylene with molecular oxygen in a liquid phase in an acetic acid solvent in the presence of a catalyst, to obtain an acetic acid slurry of terephthalic acid, separating terephthalic acid crystals from the acetic acid slurry, washing the terephthalic acid crystals containing acetic acid, with p-xylene or an acetic acid ester, and then mixing water thereto.
摘要翻译： 一种制备对苯二甲酸的水性浆料的方法，其包括在催化剂存在下，在乙酸溶剂中，在液相中用分子氧氧化对二甲苯，得到对苯二甲酸的乙酸浆液，分离对苯二甲酸晶体 从乙酸浆液中洗涤含有乙酸的对苯二甲酸晶体与对二甲苯或乙酸酯，然后将水混合。
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公开(公告)号：US5420344A
公开(公告)日：1995-05-30
申请号：US134907
申请日：1993-10-13
申请人： Yoshiaki Izumisawa , Tsukasa Kawahara , Yoshiyuki Sumi , Takehiko Baba , Yoshio Ishinaga , Katsuhiko Fukui , Hironori Ohgi
发明人： Yoshiaki Izumisawa , Tsukasa Kawahara , Yoshiyuki Sumi , Takehiko Baba , Yoshio Ishinaga , Katsuhiko Fukui , Hironori Ohgi
IPC分类号： C07C51/487 , C07C51/42
CPC分类号： C07C51/487
摘要： A process for producing highly pure terephthalic acid, which comprises heating and dissolving crude terephthalic acid in water, and purifying it by contacting the aqueous solution with hydrogen at a temperature of from 260.degree. to 320.degree. C. in the presence of a platinum group metal catalyst, wherein the purification is initiated within three minutes after the aqueous solution under heating reaches a temperature of 250.degree. C.
摘要翻译： 一种生产高纯度对苯二甲酸的方法，其包括将粗对苯二甲酸加热并溶解在水中，并通过在铂族金属存在下在260℃至320℃的温度下将该水溶液与氢气接触来进行纯化 催化剂，其中在加热水溶液达到250℃的温度后三分钟内开始纯化。
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公开(公告)号：US5567842A
公开(公告)日：1996-10-22
申请号：US550400
申请日：1995-10-30
IPC分类号： C07C51/43
CPC分类号： C07C51/43
摘要： A process for producing terephthalic acid, which comprises dissolving crude terephthalic acid in an aqueous medium, contacting it with a platinum group metal catalyst for purification under a temperature condition of from 260.degree. to 320.degree. C., crystallizing terephthalic acid from the aqueous solution of terephthalic acid by cooling the aqueous solution stepwise in a plurality of crystallizers connected in series, in such a manner that in a first crystallization zone, the crystallization temperature is adjusted to a level within a range of from 240.degree. to 260.degree. C. and agitating is carried out by impeller with a power requirement of impeller within a range of from 0.4 to 10 kw/m.sup.3, and then, in a second crystallization zone, the crystallization temperature is adjusted to a level within a range of from 180.degree. to 230.degree. C., which is lower by from 20.degree. to 60.degree. C. than the crystallization temperature in the first crystallization zone, followed by solid-liquid separation, and drying the separated terephthalic acid crystals to obtain terephthalic acid particles wherein the proportion of particles having particle sizes exceeding 210 .mu.m is at most 10 wt %.
摘要翻译： 一种对苯二甲酸的制造方法，其包括将粗对苯二甲酸溶解在水性介质中，使其与铂族金属催化剂接触，在260〜320℃的温度条件下进行纯化，从对苯二甲酸的水溶液中 对苯二甲酸通过在多个连续串联的结晶器中逐步冷却水溶液，使得在第一结晶区中，将结晶温度调节至240-260℃的范围内并搅拌 由叶轮的功率要求在0.4〜10kw / m 3的范围内由叶轮进行，然后在第二结晶区中将结晶温度调节至180〜230℃的范围内 C.比第一结晶区的结晶温度低20〜60℃，然后进行固液分离，干燥t 将对苯二甲酸晶体分离，得到粒径超过210μm的粒子的比例为10重量％以下的对苯二甲酸粒子。
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