公开(公告)号：US20190301991A1

公开(公告)日：2019-10-03

申请号：US16346460

申请日：2017-05-15

申请人： TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO., LTD.

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： The present invention relates to a rotary pressure filter testing apparatus, a testing method and a design method thereof. The apparatus comprises 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 is to add a certain amount of calculated testing tank into the filter frame, then introduce a gas with a certain pressure into the stabilizer tank, fill the filter frame through the buffer tank, then open a valve at bottom of the filter frame, measure a mass of discharged mother liquid in the filter frame, measure time of the filtering process, and sample and analyze the filtered filter cake and the mother liquid according to actual needs; subsequently, perform cleaning and drying processes sequentially according to such method. The present invention largely reduces the testing costs, and meanwhile, actual working conditions can be simulated more accurately, thereby obtaining accurate and reliable design data.

公开(公告)号：US20200164291A1

公开(公告)日：2020-05-28

申请号：US16330702

申请日：2017-07-24

申请人： TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO., LTD

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.

公开(公告)号：US20200157034A1

公开(公告)日：2020-05-21

申请号：US16347170

申请日：2017-05-15

申请人： TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO., LTD

发明人： Xu ZHAO ,  Zhongxin SUN ,  Wanyao ZHANG ,  Tianbao WANG ,  Xiangnan ZHAI ,  Yongpeng TAN ,  Guohai ZHANG ,  Yu GUO ,  Xiaoling XIE

IPC分类号： C07C51/47 ,  B01D35/16

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.