Regeneratively cooled coal combustor/gasifier with integral dry ash removal

Patent · Fri Apr 30 00:00:00 EDT 1982

OSTI ID:6459934

Beaufrere, A H

A coal combustor/gasifier is disclosed which produces a low or medium combustion gas fired furnances or boilers. Two concentric shells define a combustion air flows to provide regenerative cooling of the inner shell for dry ash operation. A fuel flow and a combustion air flow having opposed swirls are mixed and burned in a mixing-combustion portion of the combustion volume and the ash laden combustion products flow with a residual swirl into an ash separation region. The ash is cooled below the fusion temperature and is moved to the wall by centrifugal force where it is entrained in the cool wall boundary layer. The boundary layer is stabilized against ash re-entrainment as it is moved to an ash removal annulus by a flow of air from the plenum through slots in the inner shell, and by suction on an ash removal skimmer slot.

• DOE Contract Number: AC02-76CH00016
• Assignee: ERA-08-018480; EDB-83-051393
• Application Number: ON: DE83006903
• OSTI ID: 6459934
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
01 COAL, LIGNITE, AND PEAT
COAL
COMBUSTION
COMBUSTORS
DESIGN
FUEL GAS
PRODUCTION
ASHES
COAL GASIFICATION
MATERIALS HANDLING
OPERATION
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GAS FUELS
GASES
GASIFICATION
MATERIALS
OXIDATION
RESIDUES
THERMOCHEMICAL PROCESSES
421000* - Engineering- Combustion Systems
014000 - Coal
Lignite
& Peat- Combustion
010404 - Coal
Lignite
& Peat- Gasification