Patents Assigned to Ishikawajima-Harima Jukogyo Kaisha
  • Economizer utilizing exhaust gas
    Patent number: 4079702
    Abstract: The present invention discloses an economizer for absorbing heat of combustion products, wherein the surfaces of a series of continuous tubes extended through an exhaust gas pipe or duct are lined with glass pipes, the clearance between the exhaust pipe or duct wall and the tubes extended therethrough is sealed with gaskets, and water is circulated through the tubes.
    Type: Grant
    Filed: August 26, 1976
    Date of Patent: March 21, 1978
    Assignees: Ishikawajima-Harima Jukogyo Kaisha, Tokushu Shunsetsu Kabushiki Kaisha
    Inventors: Takaaki Furukawa, Kenzi Ozaka
  • Rolling cut type double side shear
    Patent number: 4079649
    Abstract: Disclosed is a rolling cut type double side shear wherein an upper side cutting blade and an upper scrap-cutting blade are driven by one crank shaft which has three eccentric sections, so as to increase the production efficiency and to make the shear simple in construction and compact in size.
    Type: Grant
    Filed: December 8, 1976
    Date of Patent: March 21, 1978
    Assignees: Ishikawajima-Harima Jukogyo Kaisha, Tokushu Shunsetsu Kabushiki Kaisha
    Inventors: Hikonori Ishii, Satoru Kumabe
  • Method of removal of nitrogen oxides, particularly for use in cement raw material burning installation
    Patent number: 4080218
    Abstract: The present invention discloses a method of removal of nitrogen oxides, particularly for the use in a cement raw material burning installation, said method comprising the step of introducing the reduction agent for the removal of nitrogen oxides into the zone, where is heated to about to 800.degree. to 1,100.degree. C of a duct connecting between a furnace such as a rotary kiln and the lowermost cyclone of a suspension type heater system, thereby removing nitrogen oxides produced in the burning furnace.
    Type: Grant
    Filed: July 13, 1976
    Date of Patent: March 21, 1978
    Assignees: Ishikawajima-Harima Jukogyo Kaisha, Tokushu Shunsetsu Kabushiki Kaisha
    Inventors: Hitoaki Mori, Zenzaburo Kawai, Toshihiro Kobayashi, Yoshimi Yamamoto