Humidification of flue gas to augment SO/sub 2/ capture by dry sorbents. Repprt for October 1985-July 1988 (Final)
This report discusses, for a coal-burning power plant, using humidification of the flue gas in a low-temperature duct to increase SO/sub 2/ removal by dry calcium-based sorbents. In particular, humidification may be a desirable modification of EPA's LIMB process, which is based on injecting limestone or hydrated lime in the furnace; it could augment SO/sub 2/ removal by adding post-furnace removal to that occurring in the injection zone. The report covers work in post-furnace humidification, charge-augmented humidification, water vapor adsorption by lime (with and without additives), and mathematical modeling of humidification and SO/sub 2/ removal processes. From these investigations, it was concluded that, for enhancement of SO/sub 2/ capture at the Edgewater demonstration of LIMB, humidification by a water spray will be required. A spray of pure water would suffice if the frequency of collisions between sorbent particles and water droplets could be increased. Deliquescent additives that are known to enhance SO/sub 2/ capture by Ca(OH)/sub 2/ at low temperatures must operate to some extent by mechanisms other than deliquescence.
- Research Organization:
- Southern Research Inst., Birmingham, AL (USA)
- OSTI ID:
- 5770951
- Report Number(s):
- PB-89-169841/XAB; SRI-ENV-88-1023-5914
- Country of Publication:
- United States
- Language:
- English
Similar Records
Commercial application in high-efficiency FGD of sorbent injection with flue gas humidification
Demonstrating LIMB: A clean-coal technology. [Limestone Injection Multi-stage Burner]
Related Subjects
FLUE GAS
DESULFURIZATION
FOSSIL-FUEL POWER PLANTS
LIME-LIMESTONE WET SCRUBBING PROCESSES
MODIFICATIONS
AIR POLLUTION CONTROL
DESIGN
FURNACES
LIMESTONE
MATHEMATICAL MODELS
PILOT PLANTS
PROGRESS REPORT
QUALITY CONTROL
SULFUR DIOXIDE
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DOCUMENT TYPES
FUNCTIONAL MODELS
GASEOUS WASTES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POWER PLANTS
ROCKS
SCRUBBING
SEDIMENTARY ROCKS
SULFUR COMPOUNDS
SULFUR OXIDES
THERMAL POWER PLANTS
WASTES
200202* - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions