Patents by Inventor Bjarne Thogersen

Bjarne Thogersen 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 for preventing dust depositions or build-ups in off-gas channels of electrothermal smelting furnaces
    Patent number: 4649807
    Abstract: A method for preventing deposits or build-ups of dust in off-gas channels for dust-containing off-gases from electrothermal smelting furnaces. This is done by blowing an additional gas tangentially into the furnace off-gas channels at the positions where build-ups or deposits of dust normally occurs. Hence a gas spiral is provided between the inner wall of the furnace off-gas channels and the dust-containing, hot furnace off-gas. Recirculated and cooled furnace off-gas is preferably used as additional gas. For open furnaces where the furnace off-gas is completely combusted before it enters into the furnace off-gas channels, air can be used as additional gas. The temperature of the additional gas is preferably kept below the sintering temperature of the dust in the furnace off-gas.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: March 17, 1987
    Assignee: Elkem a/s
    Inventors: Torbjorn Aasen, Bjarne Thogersen