Circulating fluidized bed combustion system for a steam generato

Details Circulating fluidized bed combustion system for a steam generato Circulating fluidized bed combustion system for a steam generato

1983-03-09

1984-07-31

Favors, Edward G.

Liquid heaters and vaporizers

Miscellaneous

110263, 431170, F22B 100

Patent

active

044623410

ABSTRACT:
The invention comprises a steam generator having a circulating fluidized bed combustion system whereby there is provision to admit air flow incrementally along the gas path to control combustion rate and firing temperature in a manner to maintain differential temperatures along the gas path. The initial portion of the gas path where combustion is initiated can be held in one temperature range as 1550.degree. F. which is optimum for sulphur retention and the final portion of the combustion zone can be elevated in temperature as to 1800.degree. F. to produce a greater degree of heat transfer through the gas to fluid heat exchange surface downstream of the combustion zone.

REFERENCES:
patent: 3171390 (1965-03-01), Blodgett
patent: 4184455 (1980-01-01), Talmud et al.
patent: 4335683 (1982-06-01), Criswell et al.
patent: 4397267 (1983-08-01), Fink

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