Patents by Inventor Keyong Yang

Keyong Yang 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 SYSTEM FOR PREPARING HYDROGEN PEROXIDE
    Publication number: 20230382731
    Abstract: Disclosed are a method and system for producing hydrogen peroxide, the method comprising: 1) carrying out a hydrogenation reaction on a working solution containing an alkylanthraquinone in the presence of hydrogenation catalyst particles and hydrogen, separating the resultant to obtain a circulating slurry and a hydrogenated solution, and recycling the circulating slurry; 2) dividing the hydrogenated solution into two streams, and regenerating the first stream of the hydrogenated solution to obtain a regenerated hydrogenated solution; 3) contacting the second stream of the hydrogenated solution and the regenerated hydrogenated solution with an oxygen-containing gas for oxidation reaction to obtain an oxidized solution; and 4) carrying out extraction separation on the oxidized solution to obtain an extract liquor containing hydrogen peroxide and a raffinate, and recycling the raffinate.
    Type: Application
    Filed: October 14, 2021
    Publication date: November 30, 2023
    Inventors: Guohua GAO, Yanan TIAN, Keyong YANG, Baoning ZONG
  • Process and apparatus for co-producing cyclohexanol and alkanol
    Patent number: 9561991
    Abstract: This invention relates to a process for co-producing cyclohexanol and alkanol, including a cyclohexene esterification step and a cyclohexyl ester hydrogenation step. This invention further relates to a process for further producing cyclohexanone or caprolactam, starting from the co-producing process, and an apparatus for co-producing cyclohexanol and alkanol. The process for co-producing cyclohexanol and alkanol of this invention is environment-friendly, with low production cost and highly improved atom economy.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: February 7, 2017
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC
    Inventors: Baoning Zong, Dongqiang Ma, Langyou Wen, Bin Sun, Keyong Yang
  • PROCESS AND APPARATUS FOR CO-PRODUCING CYCLOHEXANOL AND ALKANOL
    Publication number: 20150274620
    Abstract: This invention relates to a process for co-producing cyclohexanol and alkanol, including a cyclohexene esterification step and a cyclohexyl ester hydrogenation step. This invention further relates to a process for further producing cyclohexanone or caprolactam, starting from the co-producing process, and an apparatus for co-producing cyclohexanol and alkanol. The process for co-producing cyclohexanol and alkanol of this invention is environment-friendly, with low production cost and highly improved atom economy.
    Type: Application
    Filed: September 17, 2013
    Publication date: October 1, 2015
    Inventors: Baoning Zong, Dongqiang Ma, Langyou Wen, Bin Sun, Keyong Yang
  • Process for producing dimethyl ether from methanol
    Patent number: 8541630
    Abstract: Disclosed is a process for producing dimethyl ether from methanol, which is characterized in that the absorbing liquid used in said absorbing column is the bottom liquid of DME-fractionating column and/or bottom waste water of the methanol-recovering column. Said process can significantly reduce energy consumption of the apparatus.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: September 24, 2013
    Assignees: China Petroleum & Chemical Corporation, Research Institute of Petroleum Processing, SINOPEC
    Inventors: Xiangbo Guo, Zheng Li, Qiang Li, Chaogang Xie, Keyong Yang, Anguo Mao, Xueliang Chang, Genquan Zhu
  • PROCESS FOR PRODUCING DIMETHYL ETHER FROM METHANOL
    Publication number: 20110065963
    Abstract: Disclosed is a process for producing dimethyl ether from methanol, which is characterized in that the absorbing liquid used in said absorbing column is the bottom liquid of DME-fractionating column and/or bottom waste water of the methanol-recovering column. Said process can significantly reduce energy consumption of the apparatus.
    Type: Application
    Filed: March 26, 2008
    Publication date: March 17, 2011
    Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, Research Institute of Petroleum Processing, Sinope
    Inventors: Xiangbo Guo, Zheng Li, Qiang Li, Chaogang Xie, Keyong Yang, Anguo Mao, Xueliang Chang, Genquan Zhu