Patents by Inventor Hiroyuki Akiho

Hiroyuki Akiho 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).

  • SYSTEM FOR TREATING SELENIUM-CONTAINING LIQUID, WET FLUE GAS DESULFURIZATION DEVICE, AND METHOD FOR TREATING SELENIUM-CONTAINING LIQUID
    Publication number: 20130004373
    Abstract: A system for treating a selenium-containing liquid includes a concentration measurement element 15 for measuring the concentration of peroxodisulfuric acid and the concentration of tetravalent selenium in the selenium-containing liquid; a setting element 21 for setting the feed amount of bivalent manganese based on the concentrations of peroxodisulfuric acid and tetravalent selenium, and a reaction rate constant ratio which is the ratio of a reaction rate constant in a reaction between bivalent manganese and peroxodisulfuric acid to a reaction rate constant in a reaction between tetravalent selenium and peroxodisulfuric acid; and an addition element 14 for adding bivalent manganese to the selenium-containing liquid such that the bivalent manganese in the selenium-containing liquid is maintained in the above feed amount. Bivalent manganese is added to the selenium-containing liquid by the addition element, whereby oxidation of tetravalent selenium to hexavalent selenium is suppressed.
    Type: Application
    Filed: March 29, 2011
    Publication date: January 3, 2013
    Applicant: CENTRAL RESEARCH INSTITUTE OF ELECTRIC POWER INDUSTRY
    Inventors: Hiroyuki Akiho, Shigeo Ito, Hiromitsu Matsuda
  • Process of treating selenium-containing liquid
    Patent number: 7833422
    Abstract: It is to provide a process of treating a selenium-containing liquid which can inexpensively treat the selenium-containing liquid. The formation of selenate is inhibited by adding at least one selected from a group consisting of Ti and Mn into the selenium-containing liquid.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: November 16, 2010
    Assignee: Central Research Institute of Electric Power Industry
    Inventors: Hiroyuki Akiho, Shigeo Ito, Hiromitsu Matsuda
  • PROCESS OF TREATING SELENIUM-CONTAINING LIQUID
    Publication number: 20090065446
    Abstract: It is to provide a process of treating a selenium-containing liquid which can inexpensively treat the selenium-containing liquid. The formation of selenate is inhibited by adding at least one selected from a group consisting of Ti and Mn into the selenium-containing liquid.
    Type: Application
    Filed: August 18, 2008
    Publication date: March 12, 2009
    Applicant: CENTRAL RESEARCH INSTITUTE OF ELECTRIC POWER INDUSTRY
    Inventors: Hiroyuki AKIHO, Shigeo Ito, Hiromitsu Matsuda