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1.发明授权公开(公告)号：US11099114B2
公开(公告)日：2021-08-24
申请号：US16346460
申请日：2017-05-15
发明人： Xu Zhao , Wanyao Zhang , Yongpeng Tan , Tianbao Wang , Xiangnan Zhai , Yanshun Shen , Guohai Zhang , Yu Guo , Xiaopeng Feng , Yuanyue Liang , Xiaoling Xie
IPC分类号： G01N15/08
摘要： 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.
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公开(公告)号：US10906858B2
公开(公告)日：2021-02-02
申请号：US16347170
申请日：2017-05-15
发明人： Xu Zhao , Zhongxin Sun , Wanyao Zhang , Tianbao Wang , Xiangnan Zhai , Yongpeng Tan , Guohai Zhang , Yu Guo , Xiaoling Xie
摘要： 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.
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公开(公告)号：US11202979B2
公开(公告)日：2021-12-21
申请号：US16330702
申请日：2017-07-24
发明人： Xu Zhao , Zhongxin Sun , Wanyao Zhang , Xiangnan Zhai , Guohai Zhang , Yu Guo , Xiaopeng Feng
IPC分类号： B01D33/80 , B01D33/067 , B01D33/72
摘要： 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.
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公开(公告)号：US10273198B2
公开(公告)日：2019-04-30
申请号：US15305034
申请日：2015-01-09
发明人： Xu Zhao , Wanyao Zhang , Zhongxin Sun , Yongpeng Tan , Xiangnan Zhai , Tianbao Wang , Yuanyue Liang , Guohai Zhang , Xiaopeng Feng , Yanshun Shen
摘要： 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.
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公开(公告)号：US09902680B2
公开(公告)日：2018-02-27
申请号：US15312504
申请日：2015-02-11
发明人： Xu Zhao , Wanyao Zhang , Zhongxin Sun , Maikui Zhang , Yongpeng Tan , Xiangnan Zhai , Tianbao Wang , Tao Shen , Rui Wang , Yuanyue Liang , Xiaopeng Feng , Guohai Zhang
摘要： 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.
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