Patents Assigned to Juhua Group Co., Ltd
  • Patent number: 12134081
    Abstract: The present application provides a continuous preparation system and method for vinylidene chloride. In the present application, by coupling two stages of high gravity reactors, the product vinylidene chloride and water vapor are distilled from a reaction system in form of an azeotrope by adopting a water vapor steam stripping method, and the product obtained using the method has high purity. In addition, by combining steam stripping and high gravity, trichloroethane and alkali solution are rapidly mixed for mass transfer, and the product vinylidene chloride is rapidly distilled from the reaction system in form of the azeotrope (based on rapid diffusion of water vapor), such that the reaction proceeds continuously towards the direction of producing vinylidene chloride, thus significantly improving the conversion rate.
    Type: Grant
    Filed: December 24, 2021
    Date of Patent: November 5, 2024
    Assignees: ZHEJIANG QUZHOU JUSU CHEMICAL INDUSTRY CO., LTD., BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY, JUHUA GROUP CO., LTD.
    Inventors: Liangliang Zhang, Liyang Zhou, Guangwen Chu, Jinyuan Lin, Jihong Tong, Jianfeng Chen, Yidong Zhang, Zhigang Wu, Yunfei Yu
  • Patent number: 12077516
    Abstract: A system and method for preparing epoxy chloropropane is provided in that by coupling three stages of high gravity reactors, the product epoxy chloropropane and water vapor are distilled from a reaction system in form of an azeotrope by adopting a water vapor steam stripping method. Further, by combining the azeotrope with the multiples stages of high gravity reactors, the gas phase mass transfer and the liquid phase mass transfer of the azeotrope are improved aiming at the features of the azeotrope in the reaction system, thus making the overall conversion rate higher. In addition, by combining steam stripping and high gravity, dichloropropanol and alkali solution are rapidly mixed for mass transfer, and the product epoxy chloropropane is rapidly distilled from the reaction system in the form of the azeotrope, such that the reaction proceeds continuously towards the direction of producing epoxy chloropropane, thus significantly improving the conversion rate.
    Type: Grant
    Filed: December 24, 2021
    Date of Patent: September 3, 2024
    Assignees: QUZHOU JUHUA POLYAMIDE FIBRE LLC., JUHUA GROUP CO., LTD, BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY
    Inventors: Liangliang Zhang, Liyang Zhou, Guangwen Chu, Bibo Xia, Jianfeng Chen, Yutu Jiang, Jihong Tong, Baochang Sun, Wei Mao, Yanchun Zheng
  • Patent number: 12005431
    Abstract: A reaction apparatus used for a continuous reaction process for the preparation of trifluoroethane includes a housing, a rotary cutting component, a submersible pump and a flow deflector. The flow deflector includes two sets of flow-deflecting plates, each set of said flow-deflecting plates including a plurality of flow-deflecting plates. Two sets of flow-deflecting plates are fixed to each of the two opposing side walls, and the two adjacent flow-deflecting plates are in offset alignment. The submersible pump is arranged inside the reaction chamber body. A liquid inlet line can connect a directly to the submersible pump without requiring the arrangement of an additional pipeline.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: June 11, 2024
    Assignees: ZHEJIANG QUHUA FLUOR-CHEMISTRY Co., Ltd., Beijing University of Chemical Technology, Juhua Group Co., Ltd
    Inventors: Liangliang Zhang, Liyang Zhou, Guangwen Chu, Jihong Tong, Jianfeng Chen, Jiangyong Hong, Bo Yang