Patents by Inventor Zhongqiang Cui

Zhongqiang Cui 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).

  • Optimized process for the preparation of olefins by direct conversion of multiple hydrocarbons
    Patent number: 6420621
    Abstract: A process for hydrocarbon conversion to prepare lower olefins such as ethylene, propylene, etc., and light aromatics by bringing hydrocarbons into contact with a solid granular catalyst. In order to optimize the reaction conditions and product structure and save the capital and operating costs, a piston flow reactor is used in this process and multiple groups of feed inlets, which allow hydrocarbons with different properties to enter the device from different feed inlets and proceed pyrolysis under different operation conditions, are set on the reactor. This process is usable for individual pyrolysis or co-feed pyrolysis of hydrocarbons from refinery gases, liquid hydrocarbons, to heavy residues.
    Type: Grant
    Filed: October 19, 1998
    Date of Patent: July 16, 2002
    Assignees: China Petro-Chemical Corp., Luoyang Petrochemical Engineering Corporation SINOPEC
    Inventors: Yingxun Sha, Zhongqiang Cui, Guoliang Wang, Mingdang Wang
  • OPTIMIZED PROCESS FOR THE PREPARATION OF OLEFINS BY DIRECT CONVERSION OF MULTIPLE HYDROCARBONS
    Publication number: 20010056216
    Abstract: A process for hydrocarbon conversion to prepare lower olefins such as ethylene, propylene, etc., and light aromatics by bringing hydrocarbons into contact with a solid granular catalyst. In order to optimize the reaction conditions and product structure and save the capital and operating costs, a piston flow reactor is used in this process and multiple groups of feed inlets, which allow hydrocarbons with different properties to enter the device from different feed inlets and proceed pyrolysis under different operation conditions, are set on the reactor. This process is usable for individual pyrolysis or co-feed pyrolysis of hydrocarbons from refinery gases, liquid hydrocarbons, to heavy residues.
    Type: Application
    Filed: October 19, 1998
    Publication date: December 27, 2001
    Inventors: YINGXUN SHA, ZHONGQIANG CUI, GUOLIANG WANG, MINGDANG WANG