Patents by Inventor Jianfang QIAN

Jianfang QIAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Synthesis method for highly selective 2-methylallyl chloride and synthesis reactor thereof
    Patent number: 11407698
    Abstract: The present invention relates to a synthesis method and synthesis reactor of high-selectivity 2-methylallyl chloride by taking isobutylene and chlorine gas as raw materials and performing a gas-phase chlorination reaction in a microchannel reactor with a cooling surface. The isobutylene and the chlorine gas are reacted in a T-shaped microchannel reactor, and the mixing speed is extremely fast. Meanwhile, the huge heat exchange area per unit volume can ensure that the reaction proceeds stably at a substantially constant temperature and has good controllability. Therefore, side reactions caused by excessive local temperature can be effectively suppressed, the reaction selectivity is high, and no coking phenomenon occurs.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: August 9, 2022
    Assignees: ZHEJIANG UNIVERSITY, ZHEJIANG HUANGMA TECHNOLOGY CO., LTD.
    Inventors: Hong Yin, Zhirong Chen, Xinrong Wang, Weisong Wang, Yuanrong Yu, Shengli Wang, Yuefen Wang, Zhenqiang Ma, Xingjun Zhao, Jianfang Qian
  • SYNTHESIS METHOD FOR HIGHLY SELECTIVE 2-METHYLALLYL CHLORIDE AND SYNTHESIS REACTOR THEREOF
    Publication number: 20210179520
    Abstract: The present invention relates to a synthesis method and synthesis reactor of high-selectivity 2-methylallyl chloride by taking isobutylene and chlorine gas as raw materials and performing a gas-phase chlorination reaction in a microchannel reactor with a cooling surface. The isobutylene and the chlorine gas are reacted in a T-shaped microchannel reactor, and the mixing speed is extremely fast. Meanwhile, the huge heat exchange area per unit volume can ensure that the reaction proceeds stably at a substantially constant temperature and has good controllability. Therefore, side reactions caused by excessive local temperature can be effectively suppressed, the reaction selectivity is high, and no coking phenomenon occurs.
    Type: Application
    Filed: October 10, 2018
    Publication date: June 17, 2021
    Applicants: ZHEJIANG UNIVERSITY, ZHEJIANG HUANGMA TECHNOLOGY CO., LTD.
    Inventors: Hong YIN, Zhirong CHEN, Xinrong WANG, Weisong WANG, Yuanrong YU, Shengli WANG, Yuefen WANG, Zhenqiang MA, Xingjun ZHAO, Jianfang QIAN