Method of firing coal boiler to produce secondary fuel gas

Details Method of firing coal boiler to produce secondary fuel gas Method of firing coal boiler to produce secondary fuel gas

1976-03-08

1977-10-04

Favors, Edward G.

Combustion

Process of combustion or burner operation

Feeding flame modifying additive

110 1P, 431 10, F23L 700

Patent

active

040521389

ABSTRACT:
A method of firing coal-powered boilers to produce both heat to operate the boiler at its full rated capacity, and also to produce a usable fuel gas generally equal in heat content to the heat consumed in the boiler to produce steam, said method consisting of burning pulverized coal in the presence of varying proportions of steam and oxygen. The boiler is over-fired with coal, but with an undersupply of oxygen, in order that the total available heat content of the coal is divided between heat released by the incomplete combustion thereof, which may be sufficient to operate the boiler at full steam capacity, and heat content contained in combustible flue gases, which may be utilized for many different purposes.

REFERENCES:
patent: 3727562 (1973-04-01), Bauer
patent: 3733165 (1973-05-01), Nakagawa et al.

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