Energy requirements of a limestone FGD system
A computerized simulation model was developed to compute the energy requirements of a limestone slurry FGD system as a function of FGD system design parameters, powerplant characteristics, coal properties, and sulfur dioxide emission regulations. The model was applied to a 'base case' plant of 500 Mw which burns 3.5Vertical Bar3< sulfur coal, meets the federal new source performance standard for SO/sub 2/ of 1.2 lb/million Btu, and cleans the flue gas by an electrostatic precipitator followed by a limestone FGD system with a turbulent contact absorber scrubbing vessel and an optimized in-line steam reheater. The total FGD system energy requirement was 3.4Vertical Bar3< of the total energy input to the boiler; variation of ten system parameters individually caused the total FGD system energy requirement to vary between 2.5Vertical Bar3< and 6.1Vertical Bar3< of the gross plant output, the most sensitive parameters being scrubbing slurry pH, which affects pumping requirements, and stack gas exit temperature, which affects reheat requirements. In all cases, FGD energy requirements were minimized when the sulfur dioxide emissison standard was met by partially bypassing the scrubber, but recent Clean Air Act Amendments might preclude this option in the future.
- Research Organization:
- Carnegie-Mellon Univ.
- OSTI ID:
- 6791820
- Journal Information:
- J. Air Pollut. Control Assoc.; (United States), Journal Name: J. Air Pollut. Control Assoc.; (United States) Vol. 28:12; ISSN JPCAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
290300* -- Energy Planning & Policy-- Environment
Health
& Safety
CARBONATE ROCKS
CHEMICAL REACTIONS
COMPUTERIZED SIMULATION
DESULFURIZATION
ENERGY CONSUMPTION
FLUE GAS
GASEOUS WASTES
INDUSTRIAL PLANTS
LIMESTONE
MANAGEMENT
MINIMIZATION
PROCESSING
ROCKS
SEDIMENTARY ROCKS
SENSITIVITY ANALYSIS
SIMULATION
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PROCESSING PLANTS
WASTES