Patents by Inventor Yunjian Hu

Yunjian Hu 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).

  • Catalyst for selective hydrogenation of olefins and its preparation as well as use
    Patent number: 7745372
    Abstract: A catalyst for the selective hydrogenation of olefins especially dienes, its preparation and use, said catalyst comprising an alumina support and cobalt and/or nickel selected from Group VIII, molybdenum and/or tungsten from Group VIB and alkali metal components supported on said support, characterized in that the catalyst contains 0.5-8% by weight of cobalt and/or nickel selected from Group VIII, 2-15% by weight of molybdenum and/or tungsten from Group VIB, over 2-8% by weight of alkali metals, and a balanced amount of alumina support calculated for oxides and based on the catalyst. Compared to the prior catalysts, the activity and selectivity for olefins especially dienes of the catalyst are higher when used in the hydrogenation of a gasoline distillate.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: June 29, 2010
    Assignees: China Petroleum & Chemical Corporation, Research Institute of Petroleum Processing, SINOPEC
    Inventors: Mingfeng Li, Yang Chu, Yunjian Hu, Guofu Xia, Hong Nie, Yahua Shi, Dadong Li
  • Process for reducing sulfur and olefin contents in gasoline
    Patent number: 7341657
    Abstract: Disclosed is a process for reducing sulfur and olefin contents in gasoline, comprising contacting gasoline feedstock and hydrogen with a hydrorefining catalyst and an paraffin-modification catalyst. The effluent of the process is separated to obtain a hydrotreated gasoline fraction free of mercaptan and having a low content of sulfur, e.g. less than 200 ppm, a low content of olefins, e.g. less than 20% by volume, and little octane loss. The hydrotreated gasoline fraction can be used as blending component of a final gasoline product.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: March 11, 2008
    Assignees: China Petroleum & Chemical Corporation, Research Institute of Petroleum Processing, Sinopec
    Inventors: Dadong Li, Yulin Shi, Yunjian Hu, Yuanbing Xi, Mingfeng Li, Yahua Shi
  • Process for reducing sulfur and olefin contents in gasoline
    Publication number: 20050133410
    Abstract: Disclosed is a process for reducing sulfur and olefin contents in gasoline, comprising contacting gasoline feedstock and hydrogen with a hydrorefining catalyst and an paraffin-modification catalyst. The effluent of the process is separated to obtain a hydrotreated gasoline fraction free of mercaptan and having a low content of sulfur, e.g. less than 200 ppm, a low content of olefins, e.g. less than 20% by volume, and little octane loss. The hydrotreated gasoline fraction can be used as blending component of a final gasoline product.
    Type: Application
    Filed: December 22, 2003
    Publication date: June 23, 2005
    Applicants: China Petroleum & Chemical Corporation, Research Institute of Petroleum Processing Sinopec
    Inventors: Dadong Li, Yulin Shi, Yunjian Hu, Yuanbing Xi, Mingfeng Li, Yahua Shi
  • Catalyst for selective hydrogenation of olefins and its preparation as well as use
    Publication number: 20050137434
    Abstract: A catalyst for the selective hydrogenation of olefins especially dienes, its preparation and use, said catalyst comprising an alumina support and cobalt and/or nickel selected from Group VIII, molybdenum and/or tungsten from Group VIB and alkali metal components supported on said support, characterized in that the catalyst contains 0.5-8% by weight of cobalt and/or nickel selected from Group VIII, 2-15% by weight of molybdenum and/or tungsten from Group VIB, over 2-8% by weight of alkali metals, and a balanced amount of alumina support calculated for oxides and based on the catalyst. Compared to the prior catalysts, the activity and selectivity for olefins especially dienes of the catalyst are higher when used in the hydrogenation of a gasoline distillate.
    Type: Application
    Filed: December 21, 2004
    Publication date: June 23, 2005
    Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC
    Inventors: Mingfeng Li, Yang Chu, Yunjian Hu, Guofu Xia, Hong Nie, Yahua Shi, Dadong Li