Modeling and analysis of coal combustion in two-stage circulating fluidized bed combustor

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:5589381

Ettouney, H M ^[1]; Farag, I H ^[2]

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1. Kuwait Univ. (Kuwait).
2. New Hampshire Univ., Durham, NH (USA)

The development of Circulating Atmospheric Fluidized Bed Combustion (CFBC) has grown rapidly during the past few years. CFBC's are complex chemical reactors in which coal combustion, sulfur capture, and nitrogen oxide (NO/sub chi/) formation and destruction take place. Two-stage Circulating Fluidized Bed Combustors are innovative designs in which the handling and feeding of coal and limestone are performed separately to develop a more efficient CFBC with reduced NO/sub chi/ and SO/sub chi/ emissions, better thermal efficiency and reduced sorbent consumption. To verify the flow field part of the model, a two-stage Plexiglas reactor has been designed and constructed for flow visualization study. The bench scale two-stage CFB design has incorporated the continuous measurements of pressure at various heights. Comparison of theoretical predictions and measured data is presented and discussed.

• OSTI ID: 5589381
• Report Number(s): CONF-881143--
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
BENCH-SCALE EXPERIMENTS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTORS
DESIGN
EMISSION
ENERGY SOURCES
FLOW MODELS
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FUELS
MATERIALS
MATHEMATICAL MODELS
OXIDATION
PERFORMANCE
THERMOCHEMICAL PROCESSES