Simulation of SO sub 2 removal via hydrated lime slurries in a spray dryer absorber flue gas desulfurization system

Miscellaneous · Sun Jan 01 00:00:00 EST 1989

OSTI ID:6853635

Shih, Hang-Shin

The objective of this study was to numerically analyze an SO{sub 2} removal process by combining a two phase gas-solid reaction (dry particle) stage with a three phase gas-liquid-solid reaction (wet particle) stage. The SO{sub 2} removal process in a spray dryer absorber flue gas desulfurization system was simulated and studied by the mathematical model developed. This model involves the simulation of the evaporation of water from atomized slurry droplets, the absorption/reaction of SO{sub 2} in the slurry droplets, and the transport phenomena in both wet and dry particle stages. Two stages of evaporation which include a constant-drying period and a falling-rate drying period were described by the corresponding mass and heat transfer relations. The absorption/reaction of SO{sub 2} in the wet particle stage was modeled using the modified Ramachandran and Sharma's film model. The grain model was adopted to evaluate the SO{sub 2} removal rate in the dry particle stage. The model predictions were compared with experimental data taken over a wide range of operating conditions.

• Research Organization: Alabama Univ., Huntsville, AL (USA)
• OSTI ID: 6853635
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
DESULFURIZATION
MATHEMATICAL MODELS
FLUE GAS
SULFUR DIOXIDE
REMOVAL
AIR POLLUTION CONTROL
DRY SCRUBBERS
FORECASTING
SIMULATION
SLURRIES
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DISPERSIONS
EQUIPMENT
GASEOUS WASTES
MIXTURES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
SCRUBBERS
SULFUR COMPOUNDS
SULFUR OXIDES
SUSPENSIONS
WASTES
010800* - Coal
Lignite
& Peat- Waste Management