Patents Assigned to Tianhua Institute of Chemical Machinery and Automation
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Patent number: 11202979Abstract: A device for reducing pressure fluctuation of a pressure filter frame and a pressure filter. The device includes a pressure filter frame that is a cylindrical housing. An inner wall of the pressure filter frame is further provided with a buffer plate. A plurality of openings are provided in the buffer plate. A gap is remained between the buffer plate and the inner wall of the pressure filter frame. A plurality of supporting posts are disposed in the gap, which fixedly connect the inner wall of the pressure filter frame with the buffer plate.Type: GrantFiled: July 24, 2017Date of Patent: December 21, 2021Assignee: TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO., LTDInventors: Xu Zhao, Zhongxin Sun, Wanyao Zhang, Xiangnan Zhai, Guohai Zhang, Yu Guo, Xiaopeng Feng
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Patent number: 11099114Abstract: A testing device, a testing method, and a design method for a rotary pressure filter. The device includes a stabilizer tank; a buffer tank connected to the stabilizer tank; a filter frame disposed beneath the buffer tank, and connected to the buffer tank; a liquid receiving tank disposed beneath the filter frame; an electronic balance disposed at bottom of the liquid receiving tank; and a seconds counter. The testing method includes adding a certain calculated amount of testing slurry into the filter frame, introducing a gas with a certain pressure into the stabilizer tank, filling the filter frame through the buffer tank, opening a valve at bottom of the filter frame, measuring a mass of the expelled filtrate expelled from the filter frame, measuring time of the filtering process, sampling and analyzing the filter cake and the expelled filtrate according to actual needs; and perform cleaning and drying processes sequentially.Type: GrantFiled: May 15, 2017Date of Patent: August 24, 2021Assignee: TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO., LTDInventors: Xu Zhao, Wanyao Zhang, Yongpeng Tan, Tianbao Wang, Xiangnan Zhai, Yanshun Shen, Guohai Zhang, Yu Guo, Xiaopeng Feng, Yuanyue Liang, Xiaoling Xie
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Patent number: 10906858Abstract: The present invention relates to a method for processing acetic acid solvent in Crude Terephthalic Acid (CTA) in an oxidized unit of a pure terephthalic acid (PTA) industrial apparatus. In the present invention, a filter cake in CTA is washed by means of a two-stage-three-step method. The present invention further shortens the production process of solvent exchanging technique of CTA pressure filters, improves production capacity of a device, reduces investment of the device, reduces energy consumption of a system, and solves the shortcomings of the existing CTA solvent exchanging technique of the pressure filters.Type: GrantFiled: May 15, 2017Date of Patent: February 2, 2021Assignee: Tianhua Institute of Chemical Machinery and Automation Co., LtdInventors: Xu Zhao, Zhongxin Sun, Wanyao Zhang, Tianbao Wang, Xiangnan Zhai, Yongpeng Tan, Guohai Zhang, Yu Guo, Xiaoling Xie
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Patent number: 10787411Abstract: The present invention relates to a method of recycling mother liquid of a PTA refining unit. The present invention recycles waste heat and PT acids of a PTA mother liquid to effectively utilize heat in the PTA mother liquid, solves influence of crystallization of the PT acids on subsequent system, reduces pollution to the environment, and can produce huge economic benefits by using high efficient multistage flash distillation technology, low temperature cogeneration technology, heat pump heating and cooling technology, and low temperature crystallization technology.Type: GrantFiled: May 15, 2017Date of Patent: September 29, 2020Assignee: TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO., LTDInventors: Xu Zhao, Tao Shen, Tianbao Wang, Wanyao Zhang, Yuanrui Lu, Lilong Xu, Min Jia, Dongzhao Han, Xiaoling Xie, Yongning Qiu
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Patent number: 10365040Abstract: A method for drying high moisture, low calorific value lignite for a generating set and recovering water contained therein and an apparatus thereof mainly consist of a rotary steam tube dryer, a washing cooling tower, a coal mill, a first bag filter, a condenser, a weighing surge bunker, a water ring vacuum pump and so on. A drying system is integrated with a milling system, every dryer and the corresponding coal mill are disposed and are directly connected via a surge bunker, thereby not only saving the heat lost during the transportation of pulverized coal, but also omitting a long-distance transportation from a conventional drying system to a conventional milling system, effectively avoiding such phenomena as dust pollution, waste and spontaneous combustion during transportation and transshipment, simplifying the coal preparation system employed in the front-end process of drying.Type: GrantFiled: March 2, 2015Date of Patent: July 30, 2019Assignee: TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO., LTDInventors: Xu Zhao, Yan Dou, Zhongfu Zhan, Yongpeng Tan, Jinwen Shi, Tao Shen, Yonggong Ling, Wei Yang, Yan Zhang
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Patent number: 10273198Abstract: A solvent exchanger and a method is provided for: pressurizing a CTA slurry into a solvent exchanger for separation and obtaining a mother liquor, a bias flow mother liquor and a suspended matter A; washing the suspended matter A to obtain a primary filtrate, a bias flow primary filtrate and a suspended matter B; washing the suspended matter B to obtain a secondary filtrate, a bias flow secondary filtrate and a suspended matter C; washing the suspended matter C to obtain a tertiary filtrate, a bias flow tertiary filtrate and a suspended matter D; washing the suspended matter D to obtain a fourth filtrate, a bias flow fourth filtrate and a suspended matter E; washing the suspended matter E to obtain a fifth filtrate, a bias flow fifth filtrate and a filter cake; and after finished, back-flushing the filter cake and then pulping to obtain a slurry, and discharging.Type: GrantFiled: January 9, 2015Date of Patent: April 30, 2019Assignee: TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO., LTDInventors: Xu Zhao, Wanyao Zhang, Zhongxin Sun, Yongpeng Tan, Xiangnan Zhai, Tianbao Wang, Yuanyue Liang, Guohai Zhang, Xiaopeng Feng, Yanshun Shen
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Patent number: 9902680Abstract: The present invention relates to a method for processing acetic acid solvent in an oxidizing unit of a PTA industrial apparatus; said method uses a pressure filter machine to filter crude terephthalic acid slurry, and then, using a multi-stage counter-current method, uses washing water to wash the acetic acid solvent, and, by means of setting up a bias-current and drainage, prevents residual liquid in the filtrate pipe from entering the next area following the rotation of the pressure filter machine, improving washing efficiency and reducing the amount of washing water; the present invention integrates the processes of filtering and washing crude terephthalic acid into a single pressure filter machine, such that the process is shorter, the occupied floor space is reduced, and energy consumption is lower. A method feeding nitrogen gas into the mother liquor tank and washing liquid tank is used to regulate the pressure balance of the system.Type: GrantFiled: February 11, 2015Date of Patent: February 27, 2018Assignee: TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO., LTDInventors: Xu Zhao, Wanyao Zhang, Zhongxin Sun, Maikui Zhang, Yongpeng Tan, Xiangnan Zhai, Tianbao Wang, Tao Shen, Rui Wang, Yuanyue Liang, Xiaopeng Feng, Guohai Zhang
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Patent number: 9850142Abstract: A method and device are provided for purifying and recycling water vapor from a coal drying process. Included are a temperature-lowering and dehumidifying process, a flash distillation stripping process, and a vacuum condensing process. A condensing tower receives a temperature-lowered exhaust gas with high humidity from a cooling tube and a condensed water of 5˜60° C. from a flash distillation tank, allowing the exhaust gas and the condensed water to contact each other in a vapor-liquid reverse manner, to lower the temperature and dehumidify the exhaust gas. The flash distillation tank performs a vacuum flash distillation to the condensing water pumped therein from the condensing tower. Water vapor of 5˜60° C. evaporated through flash distillation in the flash distillation tank enters into the demisting washer to be dehumidified and then is condensed. The condensed water in the vapor condenser is transferred into a recycled water tank. Non-condensable gas is discharged out.Type: GrantFiled: December 16, 2013Date of Patent: December 26, 2017Assignees: Tianhua Institute of Chemical Machinery and Automation Co., Ltd., National Engineering Research Center of Drying Technology and EquipmentInventors: Xu Zhao, Maikui Zhang, Tao Shen, Zhongfu Zhan, Yongpeng Tan, Min Jia, Tianbao Wang, Xiaoling Xie
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Patent number: 9352972Abstract: A device for recovering SiCl4 slurry and method for the same, comprising a paddle dryer for receiving SiCl4 slurry containing chlorosilane; a first spray scrubber for receiving exhaust gas from the paddle dryer; a condenser for condensing and recovering the purifying exhaust gas from the first spray scrubber and discharging supersaturated vapor that after condensation and separation; a defogging separator for removing liquid droplets from supersaturated vapor which is cooled by the condenser; a hydrolysis tank for receiving and hydrolyzing a paste-like slurry from the paddle dryer and vapor from the defogging separator to produce mixture and exhaust gas; a drum pressure filter for receiving neutralization products from a neutralization stirring tank.Type: GrantFiled: May 15, 2013Date of Patent: May 31, 2016Assignees: National Engineering Research Center of Drying Technology and Equipment, Tianhua Institute of Chemical Machinery and Automation Co., LtdInventors: Xu Zhao, Hui Guo, Wanyao Zahng, Rui Wang, Xiangnan Zhai
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Patent number: 9126134Abstract: The invention relates to an exhaust gas separating tower, comprising a washing section, a flash-distilling section above the washing section, and a liquid seal means between the flash flash-distilling section and the washing section. The washing section is configured for washing exhaust gas entering the tower with a cooling liquid to at least partially remove solid dust entrained in the exhaust gas, cool the exhaust gas, and condense at least a portion of moisture in the exhaust gas into liquid. The flash-distilling section is configured for flash-distilling the cooling liquid from the washing section to produce a cooled cooling liquid and a cooling liquid vapor. The liquid seal means is configured so that the cooling liquid produced by flash-distillation can enter the washing section through the liquid seal means while the flash-distilling section is in gas-phase isolation from the washing section, wherein a pressure in the flash-distilling section is lower than that in the washing section.Type: GrantFiled: September 4, 2013Date of Patent: September 8, 2015Assignee: TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO., LTD.Inventors: Xu Zhao, Yonggong Ling, Yan Dou, Tao Shen, Zhongfu Zhan, Yongpeng Tan, Yan Zhang
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Publication number: 20140262738Abstract: A method and device are provided for purifying and recycling water vapor from a coal drying process. Included are a temperature-lowering and dehumidifying process, a flash distillation stripping process, and a vacuum condensing process. A condensing tower receives a temperature-lowered exhaust gas with high humidity from a cooling tube and a condensed water of 5˜60° C. from a flash distillation tank, allowing the exhaust gas and the condensed water to contact each other in a vapor-liquid reverse manner, to lower the temperature and dehumidify the exhaust gas. The flash distillation tank performs a vacuum flash distillation to the condensing water pumped therein from the condensing tower. Water vapor of 5˜60° C. evaporated through flash distillation in the flash distillation tank enters into the demisting washer to be dehumidified and then is condensed. The condensed water in the vapor condenser is transferred into a recycled water tank. Non-condensable gas is discharged out.Type: ApplicationFiled: December 16, 2013Publication date: September 18, 2014Applicants: National Engineering Research Center of Drying Technology and Equipment, TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO., LTD.Inventors: Xu Zhao, Maikui Zhang, Tao Shen, Zhongfu Zhan, Yongpeng Tan, Min Jia, Tianbao Wang, Xiaoling Xie
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Publication number: 20140262736Abstract: A method is provided for purifying and recycling water vapor from a coal drying process and device which employ temperature reduction and dehumidifying, a flash distillation, and vacuum condensation. With a condensed tower, a high humidity exhaust gas is preliminarily lowered in temperature, and condensed water of 5˜60° C. is pumped, are received, vapor-liquid reverse contact is performed, and temperature reduction and dehumidifying occurs. With a flash distillation tank and a demisting washer, condensed water of 40˜100° C. pumped by the flash distillation water pump is performed on vacuum flash distillation, water vapor of 5˜60° C. evaporated in the flash distillation tank enters into the demisting washer to be dehumidified and then into a vapor condenser. With a condenser and a water ring vacuum pump, water vapor of 5˜60° C. is condensed through mist eliminating and washing by the demisting washer, condensed water is recycled, and non-condensable gas is discharged.Type: ApplicationFiled: March 13, 2013Publication date: September 18, 2014Applicants: National Engineering Research Center of Drying Technology and Equipment, TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO., LTD.Inventors: Tianhua Institute Of Chemical Machinery And Automation Co., Ltd., National Engineering Research Center of Drying Technology and Equipment
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Publication number: 20140099250Abstract: A device for recovering SiCl4 slurry and method for the same, comprising a paddle dryer for receiving SiCl4 slurry containing chlorosilane; a first spray scrubber for receiving exhaust gas from the paddle dryer; a condenser for condensing and recovering the purifying exhaust gas from the first spray scrubber and discharging supersaturated vapor that after condensation and separation; a defogging separator for removing liquid droplets from supersaturated vapor which is cooled by the condenser; a hydrolysis tank for receiving and hydrolyzing a paste-like slurry from the paddle dryer and vapor from the defogging separator to produce mixture and exhaust gas; a drum pressure filter for receiving neutralization products from a neutralization stirring tank.Type: ApplicationFiled: May 15, 2013Publication date: April 10, 2014Applicants: National Engineering Research Center of Drying Technology and Equipment, Tianhua Institute of Chemical Machinery and Automation Co., ltdInventors: Xu ZHAO, Hui GUO, Wanyao ZAHNG, Rui WANG, Xiangnan ZHAI
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Publication number: 20140060333Abstract: The invention relates to an exhaust gas separating tower, comprising a washing section, a flash-distilling section above the washing section, and a liquid seal means between the flash flash-distilling section and the washing section. The washing section is configured for washing exhaust gas entering the tower with a cooling liquid to at least partially remove solid dust entrained in the exhaust gas, cool the exhaust gas, and condense at least a portion of moisture in the exhaust gas into liquid. The flash-distilling section is configured for flash-distilling the cooling liquid from the washing section to produce a cooled cooling liquid and a cooling liquid vapor. The liquid seal means is configured so that the cooling liquid produced by flash-distillation can enter the washing section through the liquid seal means while the flash-distilling section is in gas-phase isolation from the washing section, wherein a pressure in the flash-distilling section is lower than that in the washing section.Type: ApplicationFiled: September 4, 2013Publication date: March 6, 2014Applicant: Tianhua Institute of Chemical Machinery and Automation Co., LtdInventors: Xu ZHAO, Yonggong LING, Yan DOU, Tao SHEN, Zhongfu ZHAN, Yongpeng TAN, Yan ZHANG
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Patent number: 8661821Abstract: The present invention relates to a process for reducing coal consumption in coal fired plant with fluidized-bed drying, namely a fluidized-bed drying system is provided between a coal powder bunker as well as a weighing belt and a coal grinding mill of the prior coal fired boiler generating set, and superheated steam which has done partial work is extracted from an steam turbine and used as a drying medium, moisture contained in the coal powder is evaporated with sensible heat and latent heat of the superheated steam, water resulted from the condensation of the superheated steam is fed into a deaerator of the steam turbine via a condensate pump for recirculation. The present invention has advantages of reducing coal consumption and saving coal, recovering residual heat, reducing emission of carbon dioxide and adopting to the national industrial policy on energy saving and emission reduction.Type: GrantFiled: March 3, 2011Date of Patent: March 4, 2014Assignees: Tianhua Institute of Chemical Machinery and Automation, National Engineering Technology Research Center of Drying Technology & Equipment, Lanzhou Ruide Drying Technology Co., Ltd.Inventors: Xu Zhao, Maikui Zhang, Yan Dou, Yongzhong Jiang, Jinwen Shi
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Publication number: 20140000461Abstract: A dehumidifying tower having a washing section, a flash-distilling section, and a condensing section. In the washing section, exhaust gas is washed with a cooling liquid to remove at least a portion of solid dust entrained in the exhaust gas, cool the exhaust gas, and condense at least a portion of moisture in the exhaust gas into liquid. The flash-distilling section flash-distills the cooling liquid used in the washing section to produce a cooled cooling liquid and a cooling liquid vapor. Cooling liquid produced by flash-distillation enters the washing section. The flash-distilling section is in gas-phase isolation from the washing section. The condensing section condenses the cooling liquid vapor produced by flash-distillation. The condensing section is configured to be in gas-phase communication with and liquid-phase isolation from the flash-distilling section, and be in both gas-phase and liquid-phase isolation from the washing section.Type: ApplicationFiled: June 25, 2013Publication date: January 2, 2014Applicants: National Engineering Research Center of Drying Technology and Equipment, Tianhua Institute of Chemical Machinery and Automation Co., LtdInventors: Xu ZHAO, Yonggong LING, Yan DOU, Tao SHEN, Zhongfu ZHAN, Yongpeng TAN, Yan Zhang
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Publication number: 20110167668Abstract: The present invention relates to A drying process for drying lignite by swashing dust collection and washing, comprising steps of: conveying wet powdered coal into a dryer by a feed belt so as to be dried; introducing hot steam for drying via a rotary joint at an outlet end of the dryer and into a heat exchange tube via a steam chamber; having the wet powdered coal contact and heat exchange with a steam pipe and dried; discharging the dried coal from an discharge port and conveying the dried coal to a subsequent station by a discharging belt; introducing condensed water resulted from steam heat exchange into a condensate pot via a rotating joint and then conveying the condensed water to a next station via a condensate pump; performing a primary dust collecting in a bin at a tail end of the dryer on waste gas produced during the drying process, discharging the waste gas from a top end of the bin and the introducing the waste gas into a swashing dust collector; discharging waste liquid resulted from washing theType: ApplicationFiled: January 10, 2011Publication date: July 14, 2011Applicants: Tianhua Institute of Chemical Machinery and Automation, National Engineering Technology Research Center of Drying Technology & Equipment, Lanzhou Ruide Drying Technology Co. Ltd.Inventors: Xu ZHAO, Yinghai LI, Yan DOU, Yongfei YUE, Zhongfu ZHAN, Jinwen SHI