Method and apparatus for controlling temperature in a circulating fluidized bed reactor
CA 2098577 A1 · Owner: Hiltunen, Matti · Inventors: Westerlund, Kurt; Hiltunen, Matti; Arpalahti, Olli
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for controlling the temperature of exothermic processes in fluidized bed reactors. A venturi (30) is arranged in the circulating fluidized bed reactor through which the, particle suspension flows from the lower portion (28) of the reactor to the upper portion (28) of the reactor so that a fluidized, bed is formed in both the upper and lower portions of the reactor. From the particle suspension withdrawn from the upper portion, of the reactor particles are separated in a particle separator (12). A portion of the particles separated in the particle separator is recycled to the lower fluidized bed and a portion to the upper fluidized bed.
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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 December 13, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 13, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.