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Fuel firing

Patent ·
OSTI ID:6796514
; ; ;
An apparatus and method to permit the burning of high and varying moisture content fuels without requiring supplemental fuel (oil or gas) firing is described. The invention provides in-situ drying of the high and varying moisture content fuels by modulating the temperature of the combustion air entering the furnace of the vapor generator. The variable flow paths taken by the air and flue gas are functions of the moisture content of the fuel being fired. The flue gas may be selectively by-passed around an economizer for direct introduction into a first air heater. The gas is then passed through a precipitator and a second air heater. Combustion air is passed through the second air heater and may be then apportioned between the first air heater and a by-pass around the air heater before introduction into the furnace.
Assignee:
Babcock and Wilcox Co The
Patent Number(s):
US 4223640
OSTI ID:
6796514
Country of Publication:
United States
Language:
English

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Related Subjects

09 BIOMASS FUELS
090400 -- Solid Waste & Wood Fuels-- (-1989)
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
AIR HEATERS
BOILERS
CHEMICAL REACTIONS
COMBUSTION
FUELS
FURNACES
HEATERS
MOISTURE
MUNICIPAL WASTES
OPERATION
OXIDATION
REFUSE DERIVED FUELS
REFUSE-FUELED BOILERS
STEAM GENERATORS
THERMOCHEMICAL PROCESSES
VAPOR GENERATORS
WASTES