Method of reducing the sulfur emissions from boilers fired with

Details Method of reducing the sulfur emissions from boilers fired with Method of reducing the sulfur emissions from boilers fired with

1979-06-08

1981-04-21

Favors, Edward G.

Furnaces

Process

Treating fuel constituent or combustion product

110218, F23B 700

Patent

active

042626102

ABSTRACT:
A method of reducing sulfur emissions in boilers fired with brown coal (as an example of low-rank solid fossil fuels with which the invention is usable) wherein finely divided calcium oxide (or calcium-oxide-containing dry materials) as additive is mixed with the fuel before the fuel is introduced into the combustion chamber of the boiler or the burner thereof. Advantageously the additive is mixed with the fuel before the milling thereof. The quantity of finely divided additive which is mixed with the fuel is varied in accordance with the sulfur concentration of the gases at the end of the combustion chamber, e.g. in response to a sulfur dioxide and/or sulfur trioxide sensor, to minimize the sulfur content of the flue gases.

REFERENCES:
patent: 3540387 (1970-11-01), McLaren et al.
patent: 3973898 (1976-08-01), Seider
patent: 4111755 (1978-09-01), Ban et al.
patent: 4170447 (1979-10-01), Goldstein

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