公开(公告)号：US20240076277A1

公开(公告)日：2024-03-07

申请号：US18269109

申请日：2021-12-24

Applicant: QUZHOU JUHUA POLYAMIDE FIBRE LLC. ,  Beijing University of Chemical Technology ,  Juhua Group Co., Ltd.

Inventor： Liangliang ZHANG ,  Liyang ZHOU ,  Guangwen CHU ,  Bibo XIA ,  Jianfeng CHEN ,  Yutu JIANG ,  Jihong TONG ,  Baochang SUN ,  Wei MAO ,  Yanchun ZHENG

IPC: C07D303/08

CPC classification number: C07D303/08

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.

公开(公告)号：US20240033706A1

公开(公告)日：2024-02-01

申请号：US18258616

申请日：2021-12-24

Applicant: ZHEJIANG QUZHOU JUSU CHEMICAL INDUSTRY CO., LTD ,  BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY ,  JUHUA GROUP CO., LTD

Inventor： Liangliang ZHANG ,  Liyang ZHOU ,  Guangwen CHU ,  Jinyuan LIN ,  Jihong TONG ,  Jianfeng CHEN ,  Yidong ZHANG ,  Zhigang WU ,  Yunfei YU

IPC: B01J19/28 ,  C07C17/25 ,  B01J19/18 ,  B01J4/00 ,  B01J19/00

CPC classification number: B01J19/28 ,  C07C17/25 ,  B01J19/1856 ,  B01J4/001 ,  B01J19/0006 ,  B01J2219/00164 ,  B01J2219/00038

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. As proved by a test apparatus, the present application can stabilize the purity of the vinylidene chloride product at 98% or more (mass fraction), decrease the TOC value of chloride salt wastewater to 100 mg/L or less, and decrease the consumption of materials and the cost of subsequent salt-containing wastewater treatment.

公开(公告)号：US20240017231A1

公开(公告)日：2024-01-18

申请号：US18038531

申请日：2021-11-29

Applicant: ZHEJIANG QUHUA FLUOR-CHEMISTRY Co., Ltd. ,  Beijing University of Chemical Technology ,  Juhua Group Co., Ltd

Inventor： Liangliang ZHANG ,  Liyang ZHOU ,  Guangwen CHU ,  Jihong TONG ,  Jianfeng CHEN ,  Jiangyong HONG ,  Bo YANG

IPC: B01J8/10 ,  C07C17/25

CPC classification number: B01J8/10 ,  C07C17/25

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.

公开(公告)号：US20240238747A1

公开(公告)日：2024-07-18

申请号：US18574374

申请日：2022-07-01

Applicant: BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY

Inventor： Jianfeng CHEN ,  Guangwen CHU ,  Liangliang ZHANG ,  Baochang SUN ,  Haikui ZOU ,  Yong LUO

IPC: B01J8/10 ,  B01J8/08

CPC classification number: B01J8/10 ,  B01J8/087 ,  B01J2208/00132 ,  B01J2208/00867

Abstract: The present invention discloses an immersion type rotating packed-bed reactor and an application thereof. A rotor filler is immersed in materials in the reactor; under the driving of the rotation of a rotor, the materials in the reactor form a loop; and when passing through the filler, the materials are fully sheared and dispersed into fluid micro-elements, so that the mass transfer rate and the reaction rate are increased. A feeding assembly simultaneously introduces materials of different phases to an inner edge of the rotor, a retaining ring and a baffle function to break a vortex, and a heat exchange assembly can maintain a system in a suitable temperature range. The present invention is suitable for heterogeneous systems such as a gas-liquid system and a liquid-liquid system. Compared with a conventional rotating packed bed, the material contact time is long, so that the reaction is more complete.