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1. 发明申请

US20230094935A1 METHOD OF MAKING TEREPHTHALIC ACID 有权
公开(公告)号：US20230094935A1
公开(公告)日：2023-03-30
申请号：US17802865
申请日：2021-02-24
申请人： SABIC Global Technologies B.V.
发明人： Syed Azhar Hashmi , Prasanna Kumar Pathath , Suman Kumar Jana , Vadlamani Chaitanya , Naveen Sathu , Lee Sangjoo , Debasish Das , Selvakumar Subramanian
IPC分类号： C07C51/265 , B01J27/128 , B01J35/12
摘要： Disclosed is a process for producing terephthalic acid. The process includes contacting p-xylene with a gaseous stream containing oxygen (O2) in presence of a homogeneous catalyst solution, at a reaction temperature of 180° C. to 195° C. to oxidize at least a portion of the p-xylene and form a product stream containing terephthalic acid, said homogeneous catalyst solution contains 350 ppm to 450 ppm cobalt (Co), 170 ppm to 270 ppm manganese (Mn), and 410 ppm to 510 ppm bromine (Br), wherein a Br/(Co+Mn) wt. % ratio is 0.5:1 to 1:1, and a Co to Mn wt. % ratio is 1.5:1 to 2:1.

2. 发明授权

US10414712B2 Purified terephthalic acid (PTA) vent steam utilization 有权
公开(公告)号：US10414712B2
公开(公告)日：2019-09-17
申请号：US15823951
申请日：2017-11-28
申请人： BP Corporation North America Inc.
发明人： Thomas Bartos , Kathryn Buckalew
IPC分类号： C07C51/43 , B01D3/34 , B01D53/70 , B01D53/76 , B01D53/86 , C07C51/16 , C07C63/26 , C07C51/265 , C07C51/42 , C07C51/487 , C07C51/36 , C07C51/255
摘要： Processes for manufacturing a purified aromatic carboxylic acid include oxidizing a substituted aromatic compound in a reaction zone to form a crude aromatic carboxylic acid and a gaseous stream; heating the crude aromatic carboxylic acid in a pre-heating zone, contacting the crude aromatic carboxylic acid with hydrogen in the presence of a catalyst in a hydrogenation reactor to form a purified aromatic carboxylic acid, crystallizing the purified aromatic carboxylic acid in a crystallization zone to form a slurry stream comprising solid purified aromatic carboxylic acid and a vapor stream. At least a portion of the vapor stream is directed to the pre-heating zone and at least a portion of the vapor stream from the pre-heating zone is vented to the off-gas treatment zone in order to achieve energy savings.

3. 发明授权

US10273197B2 Method for producing high-purity terephthalic acid 有权
公开(公告)号：US10273197B2
公开(公告)日：2019-04-30
申请号：US15745738
申请日：2016-07-21
申请人： Mitsubishi Gas Chemical Company, Inc.
发明人： Goh Nakamura , Hideaki Fujita , Kotaro Murakami
IPC分类号： C07C51/43 , C07C51/265 , C07C51/487 , C07C63/26
摘要： A method for producing high-purity terephthalic acid, comprising following steps (a) to (c): the step (a); obtaining crude terephthalic acid crystal by liquid phase-oxidizing a p-phenylene compound; the step (b); obtaining a terephthalic acid crystal slurry by a catalytic hydrogenation treatment of the crude terephthalic acid crystal; and the step (c); introducing the terephthalic acid crystal slurry into an upper portion of a mother liquor replacement tower, and bringing the slurry into contact with an upward flow of replacement water introduced from a bottom portion of the mother liquor replacement tower while making the terephthalic acid crystal settled down in the tower, and extracting the terephthalic acid crystal as a slurry with the replacement water from the tower bottom portion, wherein (1) a stirring blade unit is disposed in a slurry layer in the bottom portion of the mother liquor replacement tower, and fluidity of the slurry layer is maintained by rotating the stirring blade unit in such a way that stirring power is 0.1 to 1.0 kWh/m3 per unit volume of the slurry layer, and (2) the replacement water is fed through the replacement water feed opening provided in the stirring blade unit.

4. 发明申请

US20170190650A1 PROCESS FOR ACETIC ACID RECOVERY FROM AQUEOUS STREAMS 审中-公开
公开(公告)号：US20170190650A1
公开(公告)日：2017-07-06
申请号：US15394365
申请日：2016-12-29
申请人： BP Corporation North America Inc.
发明人： DAVID PETERSON , Sameer Talreja
IPC分类号： C07C51/47 , C02F1/44 , B01D17/02 , C02F1/28 , C07C51/265 , B01D61/02
CPC分类号： C07C51/47 , B01D17/0202 , B01D61/025 , C02F1/281 , C02F1/283 , C02F1/286 , C02F1/441 , C02F2101/32 , C07C51/265 , C07C53/08 , C07C63/26
摘要： A process for removing acetic acid from an aqueous stream containing yellow oil. According to the process, yellow oil is removed from the aqueous stream prior to the removal of acetic acid by a reverse osmosis membrane.

5. 发明授权

US09656983B2 Process for starting up a gas phase oxidation reactor 有权
公开(公告)号：US09656983B2
公开(公告)日：2017-05-23
申请号：US14900698
申请日：2014-06-16
申请人： BASF SE
发明人： Michael Krämer , Nico F. Fischer , Jürgen Zühlke , Hans-Martin Allmann
IPC分类号： C07D307/89 , C07C51/265 , C07C51/31
CPC分类号： C07D307/89 , C07C51/265 , C07C51/313 , C07C63/16
摘要： A process for preparing carboxylic acids and/or carboxylic anhydrides by gas phase oxidation of aromatic hydrocarbons, in which a gas stream comprising at least one aromatic hydrocarbon and molecular oxygen is passed continuously over a catalyst thermostatted by a heat carrier medium, which comprises keeping the temperature of the heat carrier medium constant during the startup of the reactor for at least 24 hours, during which neither the loading of the gas stream with hydrocarbons nor the gas stream volume is increased by more than 3%.

6. 发明申请

US20160347700A1 PROCESS FOR OXIDATION OF ALKYL AROMATIC COMPOUND TO AROMATIC CARBOXYLIC ACID 有权
标题翻译：将烷基芳族化合物氧化成芳香羧酸的方法
公开(公告)号：US20160347700A1
公开(公告)日：2016-12-01
申请号：US15117352
申请日：2015-02-19
申请人： RELIANCE INDUSTRIES LIMITED
发明人： Vivek SHANKARANARAYANAN , Suresh Shantilal JAIN , Pavankumar ADURI , Rajesh Ratnakar TERDALKAR , Nitin Haribhau PATIL , Parasuveera UPPARA
IPC分类号： C07C51/265 , C07C51/48 , C07C51/43
CPC分类号： C07C51/265 , C07C51/43 , C07C51/48 , C07C63/26
摘要： The present disclosure provides a process for oxidation of p-xylene to terephalic acid. Recovery of fluid medium and valuable chemicals in carried out using p-xylene as fluid medium which is also the starting material. The recovered stream containing p-xylene, acetic acid and other valuable chemicals is recycled to the oxidation step. The process disclosed in the present disclosure is energy efficinnt and cost effective.
摘要翻译：本公开内容提供了将对二甲苯氧化成对苯二酸的方法。使用对二甲苯作为起始材料的流体介质，回收流体介质和有价值的化学物质。含有对二甲苯，乙酸和其他有价值化学品的回收物流被循环到氧化步骤。本公开中公开的方法是能量效率和成本有效的。

7. 发明授权

US09505692B2 Dicarboxylic acid production with self-fuel oxidative destruction 有权
标题翻译：二羧酸生产与自燃性氧化破坏
公开(公告)号：US09505692B2
公开(公告)日：2016-11-29
申请号：US12556099
申请日：2009-09-09
申请人： Raymond Elbert Fogle, III , Ronald Buford Sheppard , Timothy Alan Upshaw , Alan George Wonders
发明人： Raymond Elbert Fogle, III , Ronald Buford Sheppard , Timothy Alan Upshaw , Alan George Wonders
IPC分类号： C07C51/265
CPC分类号： C07C51/265 , C07C63/26 , C07C63/15
摘要： The invention provides improved energy content in and shaft power recovery from off-gas from xylene oxidation reactions while at the same time minimizing wastewater treatment cost. More shaft power is produced using off-gas than is required to drive the main air compressor, even with preferred, relatively low oxidation temperatures. Simultaneously, an amount of wastewater greater than byproduct water from oxidation of xylene is kept in vapor form and treated along with off-gas pollutants in a self-sustaining (self-fueling) gas-phase thermal oxidative destruction unit. Optionally, off-gas is combined from multiple xylene oxidation reactors, comprising primary and/or secondary oxidation reactors and forming TPA and/or IPA. Optionally, air compressor condensate and caustic scrubber blowdown are used in a TPA process or as utility water, effectively eliminating normal flow of liquid wastewater effluent from a TPA plant. Optionally, PET off-gas containing the water of PET formation is treated in a shared thermal oxidative destruction unit, effectively eliminating normal flow of liquid wastewater effluent from a combined pX-to-TPA-to-PET plant.
摘要翻译：本发明提供了来自二甲苯氧化反应的废气的改进的能量含量和轴功率回收，同时使废水处理成本最小化。即使使用优选的相对低的氧化温度，也可以使用除了驱动主空气压缩机所需的废气以外的更多的轴功率。同时，大量来自二氧化碳氧化的副产物水的废水保持蒸气形式，并在自持（自燃）气相热氧化破坏装置中与废气污染物一起处理。任选地，废气从包括初级和/或二级氧化反应器并形成TPA和/或IPA的多个二甲苯氧化反应器组合。任选地，空气压缩机冷凝物和苛性碱洗涤器排污用于TPA方法或作为效用水，有效地消除了来自TPA设备的液体废水流出物的正常流动。任选地，在共同的热氧化破坏单元中处理含有PET形成水的PET废气，有效地消除了从组合的pX到TPA到PET植物的液体废水流出物的正常流动。

8. 发明授权

US09493389B2 Dicarboxylic acid production with enhanced energy recovery 有权
标题翻译：增加能量回收的二羧酸生产
公开(公告)号：US09493389B2
公开(公告)日：2016-11-15
申请号：US12556107
申请日：2009-09-09
申请人： Raymond Elbert Fogle, III , Ronald Buford Sheppard , Timothy Alan Upshaw , Alan George Wonders
发明人： Raymond Elbert Fogle, III , Ronald Buford Sheppard , Timothy Alan Upshaw , Alan George Wonders
IPC分类号： C07C51/265
CPC分类号： C07C51/265 , Y02P20/51 , C07C63/15 , C07C63/26
摘要： The invention provides improved energy content in and shaft power recovery from off-gas from xylene oxidation reactions while at the same time minimizing wastewater treatment cost. More shaft power is produced using off-gas than is required to drive the main air compressor, even with preferred, relatively low oxidation temperatures. Simultaneously, an amount of wastewater greater than byproduct water from oxidation of xylene is kept in vapor form and treated along with off-gas pollutants in a self-sustaining (self-fueling) gas-phase thermal oxidative destruction unit. Optionally, off-gas is combined from multiple xylene oxidation reactors, comprising primary and/or secondary oxidation reactors and forming TPA and/or IPA. Optionally, air compressor condensate and caustic scrubber blowdown are used in a TPA process or as utility water, effectively eliminating normal flow of liquid wastewater effluent from a TPA plant. Optionally, PET off-gas containing the water of PET formation is treated in a shared thermal oxidative destruction unit, effectively eliminating normal flow of liquid wastewater effluent from a combined pX-to-TPA-to-PET plant.
摘要翻译：本发明提供了来自二甲苯氧化反应的废气的改进的能量含量和轴功率回收，同时使废水处理成本最小化。即使使用优选的相对低的氧化温度，也可以使用除了驱动主空气压缩机所需的废气以外的更多的轴功率。同时，大量来自二氧化碳氧化的副产物水的废水保持蒸气形式，并在自持（自燃）气相热氧化破坏装置中与废气污染物一起处理。任选地，废气从包括初级和/或二级氧化反应器并形成TPA和/或IPA的多个二甲苯氧化反应器组合。任选地，空气压缩机冷凝物和苛性碱洗涤器排污用于TPA方法或作为效用水，有效地消除了来自TPA设备的液体废水流出物的正常流动。任选地，在共同的热氧化破坏单元中处理含有PET形成水的PET废气，有效地消除了从组合的pX到TPA到PET植物的液体废水流出物的正常流动。

9. 发明授权

US09493387B2 Dicarboxylic acid production with minimal wastewater generation 有权
标题翻译：二羧酸生产与最少的废水产生
公开(公告)号：US09493387B2
公开(公告)日：2016-11-15
申请号：US12556096
申请日：2009-09-09
申请人： Raymond Elbert Fogle, III , Ronald Buford Sheppard , Timothy Alan Upshaw , Alan George Wonders
发明人： Raymond Elbert Fogle, III , Ronald Buford Sheppard , Timothy Alan Upshaw , Alan George Wonders
IPC分类号： C07C51/265
CPC分类号： C07C51/265 , C07C63/24 , C07C63/26 , C07C63/15
摘要： The invention provides improved energy content in and shaft power recovery from off-gas from xylene oxidation reactions while at the same time minimizing wastewater treatment cost. More shaft power is produced using off-gas than is required to drive the main air compressor, even with preferred, relatively low oxidation temperatures. Simultaneously, an amount of wastewater greater than byproduct water from oxidation of xylene is kept in vapor form and treated along with off-gas pollutants in a self-sustaining (self-fueling) gas-phase thermal oxidative destruction unit. Optionally, off-gas is combined from multiple xylene oxidation reactors, comprising primary and/or secondary oxidation reactors and forming TPA and/or IPA. Optionally, air compressor condensate and caustic scrubber blowdown are used in a TPA process or as utility water, effectively eliminating normal flow of liquid wastewater effluent from a TPA plant. Optionally, PET off-gas containing the water of PET formation is treated in a shared thermal oxidative destruction unit, effectively eliminating normal flow of liquid wastewater effluent from a combined pX-to-TPA-to-PET plant.
摘要翻译：本发明提供了来自二甲苯氧化反应的废气的改进的能量含量和轴功率回收，同时使废水处理成本最小化。即使使用优选的相对低的氧化温度，也可以使用除了驱动主空气压缩机所需的废气以外的更多的轴功率。同时，大量来自二氧化碳氧化的副产物水的废水保持蒸气形式，并在自持（自燃）气相热氧化破坏装置中与废气污染物一起处理。任选地，废气从包括初级和/或二级氧化反应器并形成TPA和/或IPA的多个二甲苯氧化反应器组合。任选地，空气压缩机冷凝物和苛性碱洗涤器排污用于TPA方法或作为效用水，有效地消除了来自TPA设备的液体废水流出物的正常流动。任选地，在共同的热氧化破坏单元中处理含有PET形成水的PET废气，有效地消除了从组合的pX到TPA到PET植物的液体废水流出物的正常流动。

10. 发明授权

US09415371B2 Multi-phase reactor system with slinger liquid reflux distributor 有权
标题翻译：多相反应器系统，具有抛油环液回流分配器
公开(公告)号：US09415371B2
公开(公告)日：2016-08-16
申请号：US14394228
申请日：2013-04-01
申请人： Reliance Industries Limited
发明人： Rajaram S. Ghadge , Thomas Mathew
IPC分类号： C07C51/265 , B01J19/18 , B01F5/22 , B01J10/00 , B01J19/00
CPC分类号： B01J19/18 , B01F5/221 , B01J10/002 , B01J19/0066 , B01J2219/00101 , B01J2219/00108 , B01J2219/0011 , B01J2219/00252 , B01J2219/194 , C07C51/265 , C07C63/26
摘要： A multi-phase reactor system for performing multi-phase reactions is disclosed. The reactor system includes a reaction vessel having a slinger device (100) mounted on a centrally positioned agitator shaft (102) proximal to an operative top of the reaction vessel. The slinger device (100) comprises a holding means defined by a vertical circumferential plate (108) and a cover plate (107) for at least partially encasing the agitator shaft (102) to define a space for collecting a liquid. The holding means comprise at least one spraying means including spray pipes (106) for distributing the liquid on an inner wall of the reaction vessel by a projectile trajectory path on rotation of the agitator shaft. A concave blade (104) may be positioned over the cover plate (107) for preventing overflow of the liquid from the holding means and forming an umbrella of the flowing liquid to effect scrubbing of the vapors and off-gas.
摘要翻译：公开了一种用于进行多相反应的多相反应器系统。反应器系统包括反应容器，该反应容器具有安装在位于反应容器的操作顶部附近的位于中心的搅拌器轴（102）上的抛油环装置（100）。抛油环装置（100）包括由垂直周向板（108）和盖板（107）限定的保持装置，用于至少部分地包围搅拌器轴（102）以限定用于收集液体的空间。保持装置包括至少一个喷涂装置，其包括喷射管（106），用于通过搅拌轴转动时的射出轨迹路径将液体分配在反应容器的内壁上。凹形叶片（104）可以位于盖板（107）上方，用于防止液体从保持装置溢出并形成流动液体的伞，以实现蒸汽和废气的清洗。

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