Regeneratively cooled coal combustor/gasifier with integral dry ash removal
Abstract
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.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 6459934
- Application Number:
- ON: DE83006903
- Assignee:
- ERA-08-018480; EDB-83-051393
- DOE Contract Number:
- AC02-76CH00016
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 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
Citation Formats
Beaufrere, A H. Regeneratively cooled coal combustor/gasifier with integral dry ash removal. United States: N. p., 1982.
Web.
Beaufrere, A H. Regeneratively cooled coal combustor/gasifier with integral dry ash removal. United States.
Beaufrere, A H. Fri .
"Regeneratively cooled coal combustor/gasifier with integral dry ash removal". United States.
@article{osti_6459934,
title = {Regeneratively cooled coal combustor/gasifier with integral dry ash removal},
author = {Beaufrere, A H},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {4}
}