Patents by Inventor Kehong DING

Kehong DING 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).

  • Method and apparatus for continuous post-treatment of benzotriazole synthetic fluid
    Publication number: 20220194905
    Abstract: The present invention belongs to the technical field of petrochemical engineering, and relates to a method for continuous post-treatment of benzotriazole (abbreviated as BTA) synthetic fluid. In particular, the present invention relates to a method for synthesizing BTA, including subjecting the BTA synthetic fluid to post-treatment steps of continuous acidification, water washing, extraction, back-extraction, dehydration, and distillation and the like. The method utilizes the difference in solubility of the BTA in water under different pHs to achieve separation by extraction without consuming a large amount of evaporation energy. The present invention is easy to operate, has little environmental pollution, high economic efficiency and low energy consumption, and is easily industrialized.
    Type: Application
    Filed: April 15, 2020
    Publication date: June 23, 2022
    Inventors: Genlin WANG, Kehong DING, Lin XU, Gang WANG, Yue XU, Yuxiu GUO
  • Method for synthesizing paraphthaloyl chloride through continuous flow in microchannel reactor
    Patent number: 10689321
    Abstract: The disclosure provides a method for synthesizing paraphthaloyl chloride through terephthalic acid chlorination in a reaction mode of a microchannel continuous flow. Compared with an existing technology, this method has characteristics of accurate control of reaction conditions, high phosgene/triphosgene utilization ratio, low catalyst dosage, high TPA conversion ratio within few tens of seconds of reaction time, high TPC yield and the like.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: June 23, 2020
    Assignee: Jiangsu Yangnong Chemical Group Co., Ltd
    Inventors: Lin Xu, Yiming Wang, Bo Shao, Kehong Ding, Hui Yan, Chenchao Bian, Hui Zhao, Yushuang Wang
  • Method for synthesizing paraphthaloyl chloride through continuous flow in microchannel reactor
    Publication number: 20190185405
    Abstract: The disclosure provides a method for synthesizing paraphthaloyl chloride through terephthalic acid chlorination in a reaction mode of a microchannel continuous flow. Compared with an existing technology, this method has characteristics of accurate control of reaction conditions, high phosgene/triphosgene utilization ratio, low catalyst dosage, high TPA conversion ratio within few tens of seconds of reaction time, high TPC yield and the like.
    Type: Application
    Filed: July 7, 2017
    Publication date: June 20, 2019
    Inventors: Lin XU, Yiming WANG, Bo SHAO, Kehong DING, Hui YAN, Chenchao BIAN, Hui ZHAO, Yushuang WANG