A method for reducing nitrogen oxide emissions of a bubbling fluidized bed boiler and an air distribution system of a bubbling fluidized bed boiler
CA 2597159 C · Owner: Dernjatin, Pauli · Inventors: Dernjatin, Pauli; Roeppaenen, Jukka; Fabritius, Marko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for reducing nitrogen oxide emissions of a bubbling fluidized bed boiler burning biofuel and an air distribution system for a bubbling fluidized bed boiler biofuel. A fluidized bed (2) is arranged in the lower part of a furnace (1) of the bubbling fluidized bed boiler which is fluidized by means , of fluidizing gas which comprises at least primary air. Fuel is fed to the fluidized bed (2), which dries and pyrolizes into pyrolysis gas comprising volatile matter of fuel, which gas rises upwards in the furnace and burns there. Secondary air is supplied above the fluidized bed (2) from secondary air nozzles (6), and tertiary air is supplied above the secondary air nozzles (6). …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 9, 2006 and granted October 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 9, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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Timeline
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.