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1. 发明授权

US5679848A Process for the preparation of terephthalic acid and its isomers 失效
标题翻译：制备对苯二甲酸及其异构体的方法
公开(公告)号：US5679848A
公开(公告)日：1997-10-21
申请号：US588311
申请日：1996-01-18
申请人： Hermann-Josef Korte , Anton Schoengen , Christoph Schwarz , Thomas Jostmann
发明人： Hermann-Josef Korte , Anton Schoengen , Christoph Schwarz , Thomas Jostmann
IPC分类号： C07C63/26 , C07C51/09
CPC分类号： C07C51/09
摘要： A process for the preparation of terephthalic acid (TA) from pure dimethyl terephthalate (DMT) and/or DMT intermediate product by hydrolysis in a countercurrent reactor at a conversion of greater than 99% and crystallization to give the solid product, characterized in that the sum of the stripping steam (S) and reaction water (W) satisfies the relationship L.ltoreq.S+W.ltoreq.2L, wherein (L) represents the amount of water necessary to keep the terephthalic acid (TA) produced largely in solution during the reaction and in the bottom of the reactor, and the terephthalic acid produced is crystallized in a crystallization which is free from washing stages.
摘要翻译：一种通过在逆流反应器中以大于99％的转化率通过水解从纯对苯二甲酸二甲酯（DMT）和/或DMT中间产物制备对苯二甲酸（TA）的方法，并且结晶得到固体产物，其特征在于，汽提蒸汽（S）和反应水（W）的总和满足关系L <= S + W

2. 发明授权

US5869736A Oxidation in the Witten-Hercules process for preparing dimethyl terephthalate 失效
标题翻译：用于制备二甲基对苯二甲酸酯的Witten-Hercules方法中的氧化
公开(公告)号：US5869736A
公开(公告)日：1999-02-09
申请号：US949336
申请日：1997-10-14
申请人： Stefan Jelko , Anton Schoengen , Hermann-Josef Korte , Gerhard Franz , Hans-Guenther Srebny , Thomas Jostmann , Frank Steding
发明人： Stefan Jelko , Anton Schoengen , Hermann-Josef Korte , Gerhard Franz , Hans-Guenther Srebny , Thomas Jostmann , Frank Steding
IPC分类号： C07C67/39 , C07C69/82 , C07C67/00
CPC分类号： C07C67/39
摘要： A process is provided for the oxidation of p-xylene and methyl p-tolulate with oxygen-containing gases in the Witten-Hercules process for preparing dimetyl terephthalate in at least two sequentially arranged stages and in the presence of a catalyst, wherein the process involves oxidizing p-xylene and methyl p-toluate with oxygen containing gases in at least two sequential stages in the presence of a catalyst, wherein the at least two sequential stages include at least one p-xylene rich stage and at least one methyl p-toluate rich stage, wherein at least one of the following steps (a) and (b) occurs:(a) in the at least one p-xylene rich stage at least a portion of p-xylene present is oxidized in the presence of 5 to 30% by mass of methyl p-toluate, based on a total amount of oxidation mixture in the at least one p-xylene rich stage; or(b) in the methyl p-toluate rich stage at least one of methyl p-toluate or p-toluic acid is oxidized in the presence of 2 to 30% by mass of p-xylene, based on a total amount of methyl p-toluate and p-toluic acid in the methyl p-toluate rich stage.
摘要翻译：提供了一种用于在Witten-Hercules方法中用含氧气体氧化对二甲苯和甲基对氨基苯甲酸的方法，用于在至少两个顺序排列的阶段和在催化剂存在下制备对苯二甲酸二甲酯，其中所述方法涉及在存在催化剂的情况下，在至少两个连续的阶段中使含氧气体氧化对二甲苯和对甲苯甲酸甲酯，其中所述至少两个连续步骤包括至少一个富含对二甲苯的级和至少一种对甲苯甲酸甲酯其中发生以下步骤（a）和（b）中的至少一个：（a）在所述至少一个对二甲苯富集阶段中，存在的对二甲苯的至少一部分在5至5的存在下被氧化 30质量％的对甲苯甲酸甲酯，基于至少一个对二甲苯富集阶段的氧化混合物的总量; 或（b）在富甲苯甲酸甲酯中，基于甲基p的总量，在2-30质量％的对二甲苯的存在下，将对甲苯甲酸甲酯或对甲苯甲酸甲酯中的至少一种氧化 - 甲苯磺酸和对甲苯甲酸。

3. 发明授权

US5286896A Process for the production of DMT-intermediate product of specific purity 失效
标题翻译：生产具有特异纯度的DMT-中间体产品的方法
公开(公告)号：US5286896A
公开(公告)日：1994-02-15
申请号：US761768
申请日：1991-08-15
申请人： Hermann-Josef Korte , Anton Miletic , Hans U. Neutzler , Anton Schoengen , Johann H. Schroeder , Ralf Wirges
发明人： Hermann-Josef Korte , Anton Miletic , Hans U. Neutzler , Anton Schoengen , Johann H. Schroeder , Ralf Wirges
IPC分类号： C07C67/52 , C07C63/26 , C07C67/39 , C07C69/82
CPC分类号： C07C67/39 , C07C67/54
摘要： The invention relates to a process for the production of a DMT intermediate product as well as its working up to fibregrade DMT and to medium pure and pure terephthalic acid. The DMT intermediate product is moreover produced by combined oxidation of a predominantly para-xylene (p-X) and para-toluic acid methyl ester (p-TE) containing mixture in liquid phase with an oxygen containing gas, esterification of the acids being produced with methanol, distillative or rectificative separation of the esterification products being produced into a p-TE rich fraction I, a fraction II containing more than 99% by weight DMT and its isomers and a high boiling residue fraction III as well as feeding back the p-TE fraction I into the oxidation, with the residue fraction III having a DMT content of 15 to 70% by weight and the DMT fraction II being purified by single solvent recrystallisation in methanol to form the DMT intermediate product to such an extent that the amounts of hydroxymethylbenzoic acid methyl ester (HM-BME) and terephthalic acid methyl ester (TAE) in the DMT intermediate product amount together to less than 200 ppm.
摘要翻译：本发明涉及一种制备DMT中间体产品的方法及其随后对高纯度DMT和高纯度和超纯对苯二甲酸的处理。 DMT中间产物通过主要含有副产物（p-X）和对甲苯酸甲酯（p-TE）的混合物与含氧气体的液相联合氧化来制备。所产生的酸用甲醇酯化，酯化产物分离成富含p-TE的馏分I，含有大于99wt。％的DMT及其异构体和具有高沸点的残余物级分III，并且将p-TE馏分I再循环至氧化。残渣馏分III的DMT含量为15〜70重量％。％，通过在甲醇中简单溶剂重结晶纯化DMT馏分I，得到其中甲基羟基苯甲酸酯（HM-BME）和对苯二甲酸甲酯（TAE）总共低于200ppm的DMT中间产物。随后将DMT中间产物加工成超纯DMT，通过第二次再结晶进行，随后通过在甲醇中洗涤DMT中间体产物进行对苯二甲酸处理，水解，结晶，并在必要时随后在水中洗涤。

4. 发明授权

US5614159A Process for the purification of an oxidation off gas with energy recovery 失效
标题翻译：能量回收纯化氧化废气的方法
公开(公告)号：US5614159A
公开(公告)日：1997-03-25
申请号：US419517
申请日：1995-04-10
申请人： Rudolf Modic , Hermann-Josef Korte , Anton Schoengen , Johann-Heinrich Schroeder , J org Porschen
发明人： Rudolf Modic , Hermann-Josef Korte , Anton Schoengen , Johann-Heinrich Schroeder , J org Porschen
IPC分类号： C10L3/10 , B01D53/34 , B01D53/72 , B01D53/77 , F02C3/22 , F02C3/30 , F02C6/00 , F02C3/20 , C07C51/16
CPC分类号： B01D53/72 , F02C3/22
摘要： In the purification of an off-gas stream originating from a process of oxidizing a liquid mixture of para-xylene with methyl para-toluate with an oxygen-containing gas under pressure, the off-gas being contaminated with at least one of an aliphatic and an aromatic impurity, which comprises expanding the off-gas stream in an expansion turbine for generating mechanical or electrical energy so as to obtain an at least partial recovery of the energy contained in the off-gas, the improvement comprising subjecting the off-gas to at least one absorption step under pressure to remove at least one component from the off-gas and subjecting the resultant off-gas stream to combustion under a pressure of more than 3 bar prior to expanding the off-gas stream in the expansion turbine.
摘要翻译：在源自在压力下用含氧气体氧化对二甲苯与对甲苯甲酸甲酯的液体混合物的方法的废气流的净化中，废气被至少一种脂族和芳族杂质，其包括使膨胀涡轮机中的废气流膨胀以产生机械或电能，以便获得包含在废气中的能量的至少部分回收，其改进包括使尾气处于在压力下至少一个吸收步骤，从废气中除去至少一种组分，并在扩大膨胀涡轮机内的废气流之前，在大于3巴的压力下使得到的废气流燃烧。

5. 发明授权

US5891410A Process for the purification of an oxidation off gas 失效
标题翻译：净化氧化废气的方法
公开(公告)号：US5891410A
公开(公告)日：1999-04-06
申请号：US27160
申请日：1993-02-24
申请人： Rudolf Modic , Hermann-Josef Korte , Anton Schoengen , Johann-Heinrich Schroeder , Jorg Porschen
发明人： Rudolf Modic , Hermann-Josef Korte , Anton Schoengen , Johann-Heinrich Schroeder , Jorg Porschen
IPC分类号： B01D53/14 , B01D53/34 , B01D53/72 , B01D53/75 , B01D53/96 , C07C67/39 , C07C69/82 , C10L3/10 , F02C3/22 , F02C3/30 , B01D53/44
CPC分类号： F02C3/22 , B01D53/72 , Y02E20/12
摘要： A process is disclosed for the purification of an off-gas which originates from the oxidation of xylene with air in the Witten process for the preparation of dimethyl terephthalate by subjecting the off-gas to a partial condensation step to remove constituents such as dimethyl terephthalate and xylene; then contacting the off-gas with a solvent such as para-toluic acid or a mixture of para-toluic acid and methyl benzoate so as to remove contaminants such as para-xylene out of the off-gas; then contacting the off-gas with a solvent such as methyl benzoate to remove contaminants such as methyl para-toluate out of the off-gas; then contacting the off-gas with water so as to remove contaminants such as methanol out of the off-gas, and then combusting the off-gas.
摘要翻译： PCT No.PCT / EP91 / 01577 Sec。 371日期：1993年2月24日 102（e）日期1993年2月24日PCT 1991年8月20日PCT PCT。出版物WO92 / 03213 日期：1992年3月5日公开了在Witten工艺中用于制备二甲基对苯二甲酸二甲酯的废气净化方法，该废气源于二甲苯与空气的氧化，通过使废气进行部分冷凝步骤以除去组分如对苯二甲酸二甲酯和二甲苯; 然后使尾气与溶剂如对甲苯甲酸或对甲苯甲酸和苯甲酸甲酯的混合物接触，以便从废气中除去诸如对二甲苯之类的污染物; 然后使废气与溶剂如苯甲酸甲酯接触，以从废气中除去污染物如对甲苯甲酸甲酯; 然后使废气与水接触，以便从废气中除去诸如甲醇的污染物，然后使废气燃烧。

6. 发明授权

US5338882A Process for the production of DMT-intermediate product of specific purity and pure terephthalic acid 失效
标题翻译：生产具有特异纯度的DMT-中间产物和纯对苯二甲酸的方法
公开(公告)号：US5338882A
公开(公告)日：1994-08-16
申请号：US145540
申请日：1993-11-04
申请人： Hermann-Josef Korte , Anton Miletic , Hans U. Neutzler , Anton Schoengen , Johann H. Schroeder , Ralf Wirges
发明人： Hermann-Josef Korte , Anton Miletic , Hans U. Neutzler , Anton Schoengen , Johann H. Schroeder , Ralf Wirges
IPC分类号： C07C67/52 , C07C63/26 , C07C67/39 , C07C69/82 , C07C51/09 , C07C51/43
CPC分类号： C07C67/39 , C07C67/54
摘要： The invention relates to a process for the production of a DMT intermediate product as well as its working up to fibregrade DMT and to medium pure and pure terephthalic acid. The DMT intermediate product is moreover produced by combined oxidation of a predominantly para-xylene (p-X) and para-toluic acid methyl ester (p-TE) containing mixture in liquid phase with an oxygen containing gas, esterification of the acids being produced with methanol, distillative or rectificative separation of the esterification products being produced into a p-TE rich fraction I, a fraction II containing more than 99% by weight DMT and its isomers and a high boiling residue fraction III as well as feeding back the p-TE fraction I into the oxidation, with the residue fraction III having a DMT content of 15 to 70% by weight and the DMT fraction II being purified by single solvent recrystallisation in methanol to form the DMT intermediate product to such an extent that the amounts of hydroxymethylbenzoic acid methyl ester (HM-BME) and terephthalic acid methyl ester (TAE) in the DMT intermediate product amount together to less than 200 ppm.
摘要翻译：本发明涉及一种生产DMT中间产物以及其加工成纤维分级DMT和中纯纯对苯二甲酸的方法。此外，DMT中间体产物通过主要在对二甲苯（pX）和对甲苯甲酸甲酯（p-TE）的液相混合物与含氧气体的组合氧化产生，所述酸与甲醇的酯化反应，产生的酯化产物的蒸馏或精馏分离成富含p-TE的馏分I，含有大于99重量％DMT及其异构体的馏分II和高沸点残渣馏分III，以及将p-TE 馏分I进入氧化，其中残余物馏分III的DMT含量为15至70重量％，DMT馏分II通过在甲醇中的单一溶剂重结晶纯化以形成DMT中间产物，使得羟甲基苯甲酸的量 DMT中间体产物中的酸甲酯（HM-BME）和对苯二甲酸甲酯（TAE）的含量一起低于200ppm。

7. 发明授权

US4755295A Multistage arrangement for countercurrent separation and methods of operating same 失效
标题翻译：用于逆流分离的多级布置和操作方法
公开(公告)号：US4755295A
公开(公告)日：1988-07-05
申请号：US080746
申请日：1987-07-31
申请人： Friedrich Donhauser , Anton Schoengen , Johann H. Shroeder , Jorg Porschen
发明人： Friedrich Donhauser , Anton Schoengen , Johann H. Shroeder , Jorg Porschen
IPC分类号： B04C5/24 , B01D11/02 , C07C51/09 , C07C63/26 , B01D17/038
CPC分类号： B01D11/02 , C07C51/43
摘要： A multistage arrangement for countercurrent separation of suspended solids, such as crystals, by means of hydro-cyclone groups connected in series and corresponding pumps and pump wells. For operating with relatively small expenditures with respect to apparatus under high pressures and at high temperatures within a certain, limited temperature range, the hydro-cyclone groups, the pump wells with pumps projecting into the pump wells, and the essential parts or regions of the lines are placed in a common pressure-proof and heat-insulated chamber. In addition, for removing coarser crystallizations and solid particles, an upstream classifier also accommodated in the chamber may be provided. The multistage arrangement can be used in a process for the production of terephthalic acid from dimethyl-terephthalate as the intermediate product, and in a process for the hydrogenation of coal.
摘要翻译：用于通过串联连接的水力旋风分离器和相应的泵和泵井逆流分离悬浮固体（例如晶体）的多级装置。对于在高压和高温下在一定的有限温度范围内的设备的相对较小的支出的操作，水力旋风组，具有泵突入泵井的泵井以及其中的主要部分或区域线路放置在通用的耐压隔热室中。此外，为了除去较粗的结晶和固体颗粒，也可以提供也容纳在室中的上游分级器。多级排列可用于从作为中间产物的二甲基对苯二甲酸酯生产对苯二甲酸的方法和用于氢化氢的方法。

8. 发明授权

US06180817B2 Process for the distillation of crude ester in the DMT/PTA process 失效
标题翻译：在DMT / PTA工艺中蒸馏粗酯的方法
公开(公告)号：US06180817B2
公开(公告)日：2001-01-30
申请号：US09154472
申请日：1998-09-16
申请人： Udo Lenz , Ulrich Neutzler , Anton Schoengen , Reinhard Sigg
发明人： Udo Lenz , Ulrich Neutzler , Anton Schoengen , Reinhard Sigg
IPC分类号： C07C6748
CPC分类号： C07C67/39 , C07C67/54 , Y10S203/22 , C07C69/82
摘要： A process for preparing crude dimethyl terephthalate, comprises oxidizing a mixture comprising para-xylene and methyl para-toluate, esterifying the oxidized mixture with methanol, separating the resulting crude ester into fractions. By separating the crude ester with a distillation column containing structured packing and using a lower bottom temperature, product yield is increased, and the process is made more economical.
摘要翻译：制备粗对苯二甲酸二甲酯的方法包括将包含对二甲苯和对甲苯甲酸甲酯的混合物氧化，用甲醇酯化氧化的混合物，将得到的粗酯分离成级分。通过将粗酯与含有规整填料的蒸馏塔分离并使用较低的底部温度，产物产率提高，并且使该方法更经济。

9. 发明授权

US5852201A Process for the distillation of crude ester in the DMT/PTA process 失效
标题翻译：在DMT / PTA工艺中蒸馏粗酯的方法
公开(公告)号：US5852201A
公开(公告)日：1998-12-22
申请号：US784519
申请日：1997-01-17
申请人： Udo Lenz , Ulrich Neutzler , Anton Schoengen , Reinhard Sigg
发明人： Udo Lenz , Ulrich Neutzler , Anton Schoengen , Reinhard Sigg
IPC分类号： C07C67/08 , B01D3/06 , B01D3/14 , C07C67/39 , C07C67/48 , C07C67/54 , C07C69/82 , B01D3/00
CPC分类号： C07C67/39 , C07C67/54 , Y10S203/22
摘要： A process for preparing crude dimethyl terephthalate, comprises oxidizing a mixture comprising para-xylene and methyl para-toluate, esterifying the oxidized mixture with methanol, separating the resulting crude ester into fractions. By separating the crude ester with a distillation column containing structured packing and using a lower bottom temperature, product yield is increased, and the process is made more economical.
摘要翻译：制备粗对苯二甲酸二甲酯的方法包括将包含对二甲苯和对甲苯甲酸甲酯的混合物氧化，用甲醇酯化氧化的混合物，将得到的粗酯分离成级分。通过将粗酯与含有规整填料的蒸馏塔分离并使用较低的底部温度，产物产率提高，并且使该方法更经济。

10. 发明授权

US6096171A Process for the distillation of crude ester in the DMT/PTA process 失效
标题翻译：在DMT / PTA工艺中蒸馏粗酯的方法
公开(公告)号：US6096171A
公开(公告)日：2000-08-01
申请号：US76741
申请日：1998-05-13
申请人： Udo Lenz , Ulrich Neutzler , Anton Schoengen , Reinhard Sigg
发明人： Udo Lenz , Ulrich Neutzler , Anton Schoengen , Reinhard Sigg
IPC分类号： C07C67/08 , B01D3/06 , B01D3/14 , C07C67/39 , C07C67/48 , C07C67/54 , C07C69/82
CPC分类号： C07C67/39 , C07C67/54 , Y10S203/22
摘要： A process for purifying a crude ester containing dimethyl terephthalate, includes flash distilling a mixture including para-xylene and methyl para-toluate, and separating the crude ester into fractions. By separating the crude ester with a distillation column containing structured packing and using a lower bottom temperature, product yield is increased, and the process is made more economical.
摘要翻译：纯化含有对苯二甲酸二甲酯的粗酯的方法包括将包括对二甲苯和对甲苯甲酸甲酯在内的混合物快速蒸馏，并将粗酯分离成馏分。通过将粗酯与含有规整填料的蒸馏塔分离并使用较低的底部温度，产物产率提高，并且使该方法更经济。

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