Patents by Inventor Leopold Seirlehner

Leopold Seirlehner 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).

  • Fluidized bed arrangement for the production of molten pig iron and steel pre-products
    Patent number: 4805880
    Abstract: A process and an arrangement for the production of molten pig iron or steel pre-products from particulate ferrous material as well as for the production of reducing gas in a meltdown gasifier. A fluidized bed of coke particles is formed by the addition of coal and the injection of oxygen-containing gas. In order to ensure a satisfactory mode of operation of the meltdown gasifier even if coal of inferior quality with a high moisture content and a high portion of volatile matter is used, additional heat is supplied to the meltdown gasifier above the feed lines for the fluidized-bed-forming oxygen-containing gas by burning and/or degassing coal particles separated from the reducing gas.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: February 21, 1989
    Assignees: Voest-Alpine Akt., Korf Engineering GmbH
    Inventors: Rolf Hauk, Gero Papst, Klaus Langner, Michael Nagl, Werner Kepplinger, Leopold Seirlehner
  • Process for the production of molten pig iron and steel pre-products
    Patent number: 4728360
    Abstract: A process and an arrangement for the production of molten pig iron or steel pre-products from particulate ferrous material as well as for the production of reducing gas in a meltdown gasifier. A fluidized bed of coke particles is formed by the addition of coal and the injection of oxygen-containing gas. In order to ensure a satisfactory mode of operation of the meltdown gasifier even if coal of inferior quality with a high moisture content and a high portion of volatile matter is used, additional heat is supplied to the meltdown gasifier above the feed lines for the fluidized-bed-forming oxygen-containing gas by burning and/or degassing coal particles separated from the reducing gas.
    Type: Grant
    Filed: November 14, 1985
    Date of Patent: March 1, 1988
    Assignees: Voest-Alpine Akt., Korf Engineering GmbH
    Inventors: Rolf Hauk, Gero Papst, Klaus Langner, Michael Nagl, Werner Kepplinger, Leopold Seirlehner