Boiler and method of heating liquid

Liquid heaters and vaporizers – Miscellaneous

Patent

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Details

110245, 431170, F22B 100

Patent

active

045289450

ABSTRACT:
In a tube boiler, fuel is burned in a fluidized bed which has a shallower part and a deeper part. The tubes extend only through the shallower part which can be fluidized independently of the deeper part so that the rate of heat transfer from the bed to the tubes can be varied according to demand. Water flows through specially configurated, upwardly oriented tubes by natural convection. There is also a general circulation of particles within the bed.

REFERENCES:
patent: 3970011 (1976-07-01), Virr et al.
patent: 4184455 (1980-01-01), Talmud et al.
patent: 4211186 (1980-07-01), Pearce
patent: 4227488 (1980-10-01), Stewart et al.
patent: 4228767 (1980-10-01), Smith et al.
patent: 4279222 (1981-07-01), Pearce
patent: 4345894 (1982-08-01), Smith et al.
patent: 4400150 (1983-08-01), Smith et al.

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