High turndown ratio fluidized bed reactor and method of operatin

Heating – Processes of heating or heater operation – Including passing – treating or conveying gas into or through...

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432 58, 110245, F21B 1510

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active

043415156

ABSTRACT:
A method of operating an adiabatic fluidized bed reactor, and an adiabatic fluidized bed reactor, including the step of providing pressurized air to an adiabatic fluidized bed reactor both through openings located in a support surface and through openings located in the reactor walls having outlets below the surface of the bed of granular material. The structure of the adiabatic fluidized bed reactor includes support surface air distribution nozzles extending through a support surface, reactor wall air distribution openings extending through the reactor walls having outlets below the surface of the bed of granular material, and separate control valves for controlling the flow of pressurized air to the support surface air distribution nozzles and to the reactor wall air distribution openings. The method and apparatus of the present invention result in higher reactor hydrodynamic turndown ratios than can be achieved with conventional single-bed reactors. For example, a hydrodynamic turndown ratio of 6.6 to 1 can be achieved by the use of the method and apparatus of the present invention.

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The Proceedings of the Sixth International Conference on Fluidized Bed Combustion--Vol. II Technical Sessions, p. 179-189, 8/1980, by U.S. Dept. of Energy.

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