Patents by Inventor Matti Salmela

Matti Salmela 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).

  • Recovery boiler
    Patent number: 6178898
    Abstract: In a recovery boiler for burning spent liquor of a pulp mill, a combustion chamber has heat transfer walls formed of tubes, at least one vertical heat transfer surface formed of tubes, and superheaters in an upper part of the combustion chamber for recovering heat generated by combustion and for cooling flue gases. The at least one vertical heat transfer surface divides the combustion chamber in a transverse direction into two combustion spaces.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: January 30, 2001
    Assignee: Kvaerner Pulping Oy
    Inventors: Tuomo Ruohola, Matti Salmela