Patents by Inventor Shuji TSUNO

Shuji TSUNO 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).

  • Propane production method and propane production apparatus
    Patent number: 10364199
    Abstract: A propane production method includes a hydrogenation reaction step of hydrogenation-reacting crude propylene and hydrogen in a presence of a catalyst to obtain gaseous crude propane containing impurities; and an impurity removal step of removing the impurities contained in the gaseous crude propane obtained in the hydrogenation reaction step to obtain purified propane. The impurity removal step includes an adsorptive removal stage of adsorbing and removing water, ethane and propylene contained as impurities in the gaseous crude propane by adsorption treatment in which the gaseous crude propane is brought into contact with an adsorbent, and a separation removal stage of separating and removing hydrogen, oxygen, nitrogen and methane contained as impurities in the crude propane after the adsorption treatment by partial condensation or distillation of crude propane after the adsorption treatment in the adsorptive removal stage.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: July 30, 2019
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Akihiro Kuwana, Junichi Kawakami, Shuji Tsuno
  • PROPANE PRODUCTION METHOD AND PROPANE PRODUCTION APPARATUS
    Publication number: 20170349506
    Abstract: A propane production method includes a hydrogenation reaction step of hydrogenation-reacting crude propylene and hydrogen in a presence of a catalyst to obtain gaseous crude propane containing impurities; and an impurity removal step of removing the impurities contained in the gaseous crude propane obtained in the hydrogenation reaction step to obtain purified propane. The impurity removal step includes an adsorptive removal stage of adsorbing and removing water, ethane and propylene contained as impurities in the gaseous crude propane by adsorption treatment in which the gaseous crude propane is brought into contact with an adsorbent, and a separation removal stage of separating and removing hydrogen, oxygen, nitrogen and methane contained as impurities in the crude propane after the adsorption treatment by partial condensation or distillation of crude propane after the adsorption treatment in the adsorptive removal stage.
    Type: Application
    Filed: January 21, 2016
    Publication date: December 7, 2017
    Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Akihiro KUWANA, Junichi KAWAKAMI, Shuji TSUNO