Conoco-Stone and Webster solids circulating fluidized bed combustion

Conference · Thu Jan 01 04:00:00 EST 1981 · Coal Technol. (Houston); (United States)

OSTI ID:6500495

Pell, M; Johnson, B

A second generation recirculating fluidized bed combustion system has been tested. An inert solid is fluidized at about 7ft/s in a dense phase mode. Solids are lifted in dilute phase through a riser using about 15% of the stoichiometric air. The solids are returned to the bed via a downflow channel and ski slope which imparts a horizontal velocity casting them across the surface of the bed. The bed is continuously circulated at up to 100 times the typical coal feed rate imparting important lateral mixing of solids. There are no tubes in the bed and this, combined with the high recirculation, results in an extremely well mixed agitated bed. Coal and limestone are introduced into the bed where they are rapidly distributed throughout the bed by the swirling action of the solids. Steam is generated by passing hot solids from the combustion zone through the water wall riser and downflow channels using secondary air as the lifting medium. The limestone is finer than has been used in first generation systems and thus has a greater capacity for the absorption of SO/sub 2/. 4 refs.

• Research Organization: Conoco Coal Dev Co
• OSTI ID: 6500495
• Report Number(s): CONF-8111140-
• Conference Information: Journal Name: Coal Technol. (Houston); (United States)
• Country of Publication: United States
• Language: English

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01 COAL, LIGNITE, AND PEAT
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42 ENGINEERING
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ASHES
BOILERS
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTORS
CONCENTRATORS
CYCLONE SEPARATORS
DESIGN
DESULFURIZATION
ENERGY SOURCES
ENERGY TRANSFER
EQUIPMENT
FEDERAL REGION III
FLUE GAS
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
GASEOUS WASTES
HEAT TRANSFER
INERTIAL SEPARATORS
LIMESTONE
MATERIALS
NORTH AMERICA
OXIDATION
PARTICLE SIZE
PENNSYLVANIA
PILOT PLANTS
POLLUTION CONTROL EQUIPMENT
RESIDUES
ROCKS
SEDIMENTARY ROCKS
SEPARATION EQUIPMENT
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SOLIDS
STEAM GENERATORS
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VAPOR GENERATORS
WASTES