Output control for fluidized bed boilers

Details Output control for fluidized bed boilers Output control for fluidized bed boilers

1978-08-14

1979-12-11

Sprague, Kenneth W.

Liquid heaters and vaporizers

Miscellaneous

110263, F22B 102, F23D 1902

Patent

active

041777654

ABSTRACT:
A fluidized bed boiler is equipped with a plurality of slidable sleeves circumscribing the vapor generator tubes disposed therein. By selectively extending or retracting the sleeves over the tubes, the heat transfer characteristics of the tubes exposed to the heat generated within the boiler may be altered. As a consequence, steam output quantity and quality may be easily modulated. In addition, by virtue of the design, tube cleaning may be accomplished with each adjustment pass.

REFERENCES:
patent: 2997286 (1961-08-01), Friese
patent: 3893426 (1975-07-01), Bryers
patent: 4096909 (1978-06-01), Jukkola
patent: 4136642 (1979-01-01), Novotny et al.

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