TRW's Slagging Combustor System tests

Conference · Tue Nov 01 04:00:00 EST 1983 · Coal Technol. (Houston); (United States)

OSTI ID:5132129

Stansel, J C; Petrill, E M; Sheppard, D B

TRW is developing an Entrained Slagging Coal Combustor System which can be used to retrofit oil- and gas-fired boilers, furnaces and process heaters economically and with little or no derating. It can also be used to solve operating/efficiency and emissions problems in existing coal-fired equipment. The Slagging Combustor consists of a water-cooled cylinder with tangential air inlet. Powdered coal (70% through 200 mesh) is transported in a dense phase fluidized condition to an injector located in the head end of the combustor, injected and entrained by the swirling air flows, then burned substoichiometrically in flight, releasing slag which impinges on the wall. The slag is driven to a strategically located slag tap by a combination of aerodynamic and gravity forces where up to 90% of the inert ash in the coal is removed as molten slag. Additional air is mixed with the hot, relatively clean, gases exiting the combustor and entering the heat utilization equipment. Final combustion takes place in the furnace, kiln or boiler. The staged combustion thus obtained reduces NO /sub x/ emissions to values comparable to oil firing ( about250 ppm). Also, by the introduction of sorbent materials into the combustor, SO /sub x/ emissions can be significantly reduced. Coal-water mixtures (70% powdered coal, 30% water) have been burned successfully in the combustor by substituting an air atomized slurry injector for the powdered coal injector.

• Research Organization: TRW Energy Development Co., Redondo Beach, CA
• OSTI ID: 5132129
• Report Number(s): CONF-831112-
• Conference Information: Journal Name: Coal Technol. (Houston); (United States) Journal Volume: 3
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
014000* -- Coal
Lignite
& Peat-- Combustion
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ADDITIVES
AIR POLLUTION ABATEMENT
BLOWERS
BOILERS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTORS
DEMONSTRATION PLANTS
ENERGY SOURCES
EQUIPMENT
FOSSIL FUELS
FUEL FEEDING SYSTEMS
FUEL SUBSTITUTION
FUEL SYSTEMS
FUELS
MATERIALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE TESTING
POLLUTION ABATEMENT
POLLUTION CONTROL EQUIPMENT
PULVERIZED FUELS
REMOVAL
RETROFITTING
SLAGS
STAGED COMBUSTION
SULFUR COMPOUNDS
SULFUR OXIDES
TESTING
THERMOCHEMICAL PROCESSES