An investigation of the mechanisms of flue gas desulfurization by in-duct dry sorbent injection
Journal Article
·
· Ind. Eng. Chem. Res.; (United States)
The mechanisms of SO/sub 2/ capture by hydrated lime particles entrained in humid flue gas were investigated in pilot-scale tests. The mechanisms are applicable to emerging in-duct dry sorbent injection processes, which involve dry sorbent injection and flue gas humidification by water spraying downstream of the air preheater in a coal-fired boiler system. SO/sub 2/ removals were measured over 2-s contact time at approaches to the adiabatic saturation temperature ranging from 5 to 35 K, in the presence and absence of evaporating water droplets. Hydrated lime removed significant SO/sub 2/ from humid flue gas in the absence of water droplets. The amount of SO/sub 2/ capture by this gas-solid reaction increased with the increasing humidity and was proportional to the layers of absorbed moisture on lime that would be in equilibrium with the humid flue gas. The presence of evaporating water droplets significantly enhanced the SO/sub 2/ removal and, thus, indicated that strong particle-droplet interactions occur. This enhancement was greater with larger droplets.
- Research Organization:
- Consolidation Coal Research and Development, Library, PA (US)
- OSTI ID:
- 6213370
- Journal Information:
- Ind. Eng. Chem. Res.; (United States), Journal Name: Ind. Eng. Chem. Res.; (United States) Vol. 28:1; ISSN IECRE
- Country of Publication:
- United States
- Language:
- English
Similar Records
Coolside desulfurization reactions and mechanisms
Humidification of flue gas to augment SO/sub 2/ capture by dry sorbents. Repprt for October 1985-July 1988 (Final)
Advanced in-duct sorbent injection process for SO{sub 2} control
Conference
·
Wed Dec 31 23:00:00 EST 1986
· Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States)
·
OSTI ID:5973917
Humidification of flue gas to augment SO/sub 2/ capture by dry sorbents. Repprt for October 1985-July 1988 (Final)
Technical Report
·
Tue Feb 28 23:00:00 EST 1989
·
OSTI ID:5770951
Advanced in-duct sorbent injection process for SO{sub 2} control
Conference
·
Fri Dec 30 23:00:00 EST 1994
·
OSTI ID:254711
Related Subjects
01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
BOILERS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COMBUSTION
DESULFURIZATION
DROPLETS
DRY SCRUBBERS
ENERGY SOURCES
EQUIPMENT
FLUE GAS
FLUIDIZED BED BOILERS
FOSSIL FUELS
FUELS
GASEOUS WASTES
HYDROGEN COMPOUNDS
INTERACTIONS
LIME-LIMESTONE WET SCRUBBING PROCESSES
MATERIALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
POLLUTION CONTROL EQUIPMENT
REMOVAL
SCRUBBERS
SCRUBBING
SORBENT RECOVERY SYSTEMS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMOCHEMICAL PROCESSES
WASTES
WATER
010800* -- Coal
Lignite
& Peat-- Waste Management
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
BOILERS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COMBUSTION
DESULFURIZATION
DROPLETS
DRY SCRUBBERS
ENERGY SOURCES
EQUIPMENT
FLUE GAS
FLUIDIZED BED BOILERS
FOSSIL FUELS
FUELS
GASEOUS WASTES
HYDROGEN COMPOUNDS
INTERACTIONS
LIME-LIMESTONE WET SCRUBBING PROCESSES
MATERIALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
POLLUTION CONTROL EQUIPMENT
REMOVAL
SCRUBBERS
SCRUBBING
SORBENT RECOVERY SYSTEMS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMOCHEMICAL PROCESSES
WASTES
WATER