Patents by Inventor Zhiging Yu

Zhiging Yu 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).

  • Aromatic hydrocarbons alkylation and liquid-solid circulating fluidized bed for alkylation
    Patent number: 5789640
    Abstract: Disclosed is a process for continuous alkylation of aromatics or their derivatives in the presence of a solid acid catalyst in a liquid-solid circulating fluidized bed system, said system comprising a liquid-solid cocurrent upflow reactor, a sedimentation washing tower for the used catalyst, a liquid-solid cocurrent upflow regenerator, a sedimentation washing tower for the regenerated catalyst, and two vortical liquid-solid separators. By regeneration of the used catalyst, continuous alkylation process is achieved in this system.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: August 4, 1998
    Assignees: China Petro-Chemical Corporation, Tsinghua University, Research Institute of Petroleum Processing Sinopec
    Inventors: Yong Jin, Wugeng Liang, Zhanwen Wang, Zhiging Yu, Enze Min, Mingyuan He, Zhijian Da