Method of regulating the amount of underfire air for combustion of wood fuels in spreader-stoker boilers

Patent · Tue Dec 30 00:00:00 EST 1980

OSTI ID:6569135

Tuttle, K L

A method of metering underfire air for increasing efficiency and reducing particulate emissions from wood-fire, spreader-stoker boilers is disclosed. A portion of the combustion air, approximately one pound of air per pound of wood, is fed through the grate into the fuel bed, while the remainder of the combustion air is distributed above the fuel in the furnace, and the fuel bed is maintained at a depth sufficient to consume all oxygen admitted under fire and to insure a continuous layer of fresh fuel thereover to entrap charred particles inside the fuel bed.

• Assignee: Department of Energy
• Patent Number(s): US 4241672
• OSTI ID: 6569135
• Resource Relation: Patent File Date: Filed date 4 Dec 1978; Other Information: PAT-APPL-966523
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
09 BIOMASS FUELS
20 FOSSIL-FUELED POWER PLANTS
WOOD
COMBUSTION
WOOD BURNING FURNACES
AIR POLLUTION CONTROL
EFFICIENCY
WOOD WASTES
AIR FLOW
BOILERS
PARTICLES
WOOD-FUEL POWER PLANTS
APPLIANCES
CHEMICAL REACTIONS
FLUID FLOW
FURNACES
GAS FLOW
OXIDATION
POLLUTION CONTROL
POWER PLANTS
SOLID WASTES
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
WASTES
WOOD BURNING APPLIANCES
421000* - Engineering- Combustion Systems
090400 - Solid Waste & Wood Fuels- (-1989)
200103 - Fossil-Fueled Power Plants- Waste-Fueled Systems