Patents by Inventor Risto Syrjalainen

Risto Syrjalainen 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 and arrangement for optimizing oxidation during burning of gaseous and liquid fuels
    Patent number: 6109911
    Abstract: A method and an arrangement for reducing emissions of nitrogen oxides in a combustion apparatus provided with a tubular furnace. The method comprises burning odor gases at first sub-stoichiometrically, and subsequently supplying additional air to the furnace (3) in the transverse direction thereof in such a manner that the final air ratio is over 1. The arrangement comprises an additional air duct (7) which extends to the furnace of the boiler and from which additional air is supplied to the furnace (3) in the transverse direction of the furnace (3).
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: August 29, 2000
    Assignee: Kvaerner Pulping Oy
    Inventors: Ari Tamminen, Risto Syrjalainen, Heikki Koivuniemi, Erkki Valimaki