Patents by Inventor Zhongfeng GENG

Zhongfeng GENG 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).

  • Patent number: 11939286
    Abstract: The present disclosure relates to a method for producing vinyl acetate, comprising a vinyl acetate synthesis process, a vinyl acetate refining process and a separation process of vinyl acetate and ethyl acetate, including an acetic acid evaporator, an oxygen mixer, a vinyl acetate synthesis reactor, a first gas separating tower, a second gas separating tower, a recovered gas compressor, a water washing tower, an absorption tower and a desorption tower, a recycling gas compressor; the vinyl acetate refining process comprising an acetic acid tower, a crude VAC tower, and a fine VAC tower, a rectifying tower, an ethyl acetate tower, a water phase receiving tank, an extracting and rectifying tower and an ethyl acetate phase separator.
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: March 26, 2024
    Assignee: TIANJIN UNIVERSITY
    Inventors: Minhua Zhang, Zhongfeng Geng, He Dong, Hao Gong, Yingzhe Yu, Shenghua Qian, Xiuqin Dong
  • Publication number: 20230312452
    Abstract: The present disclosure relates to a method for producing vinyl acetate, comprising a vinyl acetate synthesis process, a vinyl acetate refining process and a separation process of vinyl acetate and ethyl acetate, including an acetic acid evaporator, an oxygen mixer, a vinyl acetate synthesis reactor, a first gas separating tower, a second gas separating tower, a recovered gas compressor, a water washing tower, an absorption tower and a desorption tower, a recycling gas compressor; the vinyl acetate refining process comprising an acetic acid tower, a crude VAC tower, and a fine VAC tower, a rectifying tower, an ethyl acetate tower, a water phase receiving tank, an extracting and rectifying tower and an ethyl acetate phase separator.
    Type: Application
    Filed: September 23, 2021
    Publication date: October 5, 2023
    Inventors: Minhua ZHANG, Zhongfeng GENG, He DONG, Hao GONG, Yingzhe YU, Shenghua QIAN, Xiuqin DONG