Patents by Inventor Pertti Petanen

Pertti Petanen 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).

  • Structure of a super heater
    Patent number: 9371987
    Abstract: A method for reducing corrosion of a superheater of a steam boiler. The superheater includes a superheater piping. The superheating piping includes a steam pipe where the steam to be superheated is directed. The steam pipe is separated by a protective shell having a surface settling in the flue gas space has a temperature that rises above an upper critical temperature, above which temperature in the flue gas space the compounds from the fuel are substantially in a gaseous form. A superheater of a steam boiler and a circulating fluidized bed boiler.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: June 21, 2016
    Assignee: Valmet Technologies Oy
    Inventors: Pertti Petänen, Kari Mäkelä, Kari Kuukkanen, Ari Kokko
  • STRUCTURE OF A SUPER HEATER
    Publication number: 20100000474
    Abstract: A method for reducing corrosion of a superheater of a steam boiler. The superheater includes a superheater piping. The superheating piping includes a steam pipe where the steam to be superheated is directed. The steam pipe is separated by a protective shell having a surface settling in the flue gas space has a temperature that rises above an upper critical temperature, above which temperature in the flue gas space the compounds from the fuel are substantially in a gaseous form. A superheater of a steam boiler and a circulating fluidized bed boiler.
    Type: Application
    Filed: December 27, 2005
    Publication date: January 7, 2010
    Applicant: KVAERNER POWER OY
    Inventors: Pertti Petänen, Kari Mäkelä, Kari Kuukkanen, Ari Kokko
  • METHOD FOR PREVENTING CORROSION ON THE HEAT EXCHANGE SURFACES OF A BOILER, AND A SUPPLY MEANS FOR ADDITIONAL MATERIAL
    Publication number: 20090194262
    Abstract: A supply and a method for preventing corrosion on heat exchange surfaces of a boiler. Additional material is fed to flue gases of a boiler by at least one supply for additional material. The supply includes a cooled case beam that is hollow inside and several nozzles for feeding the additional material.
    Type: Application
    Filed: December 10, 2008
    Publication date: August 6, 2009
    Applicant: Metso Power Oy
    Inventors: Juha ROPPO, Jaani Silvennoinen, Vesa Kainu, Asko Rantee, Pertti Petanen
  • Process for the recovery of heat and chemicals from spent liquor
    Patent number: 5230773
    Abstract: The invention relates to a process for the recovery of heat and chemicals from a mixture of ashes and spent liquor by carrying out the final concentrating (2) of the liquor, and its feeding (8) into the soda recovery unit (5), under pressure and at a temperature higher than the atmospheric boiling point of the liquor. According to the invention, the ashes (1) are not mixed with the waste liquor (7) until after the final concentrating (2) of the liquor, and the mixture is further expansion evaporated (4) before the thus concentrated pressurized liquor is fed into the soda recovery unit (5).
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: July 27, 1993
    Assignee: Oy Tampella AB
    Inventor: Pertti Petanen