Fuel stoker and furnace

Patent · Tue Feb 14 04:00:00 EST 1984

OSTI ID:6678262

Schafer, T L; Schafer, G L; Swett, H D

A furnace having a primary heat exchange unit also providing a combustion chamber, a secondary heat exchange unit connected by an upper crossover conduit to the primary heat exchange unit, and a tertiary heat exchange unit connected by a lower V-shaped crossover conduit to the secondary heat exchange unit. A third crossover conduit connects the V-shaped crossover conduit with the primary heat exchange unit. Vibrating means are provided between the secondary and tertiary heat exchange units to vibrate the walls thereof and dislodge clinging fly ash so that it falls into the V-shaped crossover conduit for removal by the screw conveyor. A burner assembly of a furnace includes a combustion air housing carrying a circular, stationary grate with an annular valley for carrying fuel during combustion. A central opening is connected to a fuel conveyor for introduction of fuel to the grate through the lower portion of the housing. Combustion air introduction conduits on the housing are remote from the fuel introduction passages and introduce air under pressure at the lower portion of the grate. An agitator and discharge ring is provided on the grate and is rotated on the grate by a suitable drive sprocket mechanism to agitate the fuel for more complete burning thereof and to remove burned ash. A horizontal burner plate is supported by a plurality of legs connected to the agitator and discharge ring over the grate to promote more complete combustion of the fuel.

• Assignee: Western Heating, Inc.
• Patent Number(s): US 4430948
• OSTI ID: 6678262
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
AEROSOL WASTES
ASHES
BURNERS
COMBUSTION CHAMBERS
COMBUSTION PRODUCTS
DESIGN
EQUIPMENT
FLY ASH
FUEL FEEDING SYSTEMS
FUEL SYSTEMS
FURNACES
HEAT EXCHANGERS
HEAT RECOVERY EQUIPMENT
MANAGEMENT
MECHANICAL VIBRATIONS
RESIDUES
STOKERS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES