Coal combustion system

Patent · Tue Sep 06 04:00:00 EDT 1988

OSTI ID:6981906

Wilkes, C; Mongia, H C; Tramm, P C

In combination with a source of compressed air and a source of pulverized coal in one of a dry powder form and a liquid slurry form, a coal burning combustion system including: a rich zone combustor, means connecting the rich zone combustor to the source of compressed air and to the source of pulverized coal, the coal being burned in a primary portion of the compressed air in the rich zone combustor at an equivalence ratio exceeding 1 and at a temperature exceeding the slagging temperature of the coal so that a continuous stream of combustible hot gases and molten slag issues from the rich zone combustor, a quench stage connected to the rich zone combustor having a throat portion therein receiving the continuous stream of combustible hot gases and molten slag, means on the quench stage defining a coolant curtain stretching across the throat portion and intercepting the continuous stream of combustible hot gases and molten slag, the coolant curtain reducing the temperature of the continuous stream of combustible hot gases and molten slag to below the slagging temperature of the coal so that the molten slag solidifies and shatters into a plurality of dry slag pellets entrained in the stream of combustible hot gases along with a quantity of residual ash, a first inertia separator means connected to the quench stage receiving the continuous stream of combustible hot gases with the entrained residual ash and dry slag pellets and separating substantially all of the dry slag pellets from the combustible hot gases.

• Assignee: General Motors Corp., Detroit, MI
• Patent Number(s): US 4768446
• OSTI ID: 6981906
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800 -- Coal
Lignite
& Peat-- Waste Management
014000* -- Coal
Lignite
& Peat-- Combustion
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR
AIR POLLUTION CONTROL
CHEMICAL REACTIONS
COAL FINES
COMBUSTION
COMBUSTORS
COMPRESSED AIR
COMPRESSED GASES
CONCENTRATORS
CONTROL
COOLING
CYCLONE SEPARATORS
DEASHING
DESIGN
DISPERSIONS
EMISSION
EQUIPMENT
FLUIDS
FUEL FEEDING SYSTEMS
FUEL SYSTEMS
GASEOUS WASTES
GASES
INERTIAL SEPARATORS
MIXTURES
OXIDATION
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
QUENCHING
SEPARATION EQUIPMENT
SLURRIES
SUSPENSIONS
THERMOCHEMICAL PROCESSES
WASTES