Method of firing coal boiler to produce secondary fuel gas
A method is described 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.
- Assignee:
- TIC; ERA-03-013847; EDB-78-029596
- Patent Number(s):
- US 4052138
- OSTI ID:
- 5388644
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010800 -- Coal
Lignite
& Peat-- Waste Management
014000* -- Coal
Lignite
& Peat-- Combustion
BOILERS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COAL FINES
COMBUSTION
CRYOGENIC FLUIDS
ELEMENTS
ENERGY SOURCES
FLUE GAS
FLUIDS
FOSSIL FUELS
FUELS
GASEOUS WASTES
NONMETALS
OPERATION
OXIDATION
OXYGEN
STEAM
WASTE PRODUCT UTILIZATION
WASTES