New regenerable sorbents for fluidized bed coal combustion
Journal Article
·
· Environ. Sci. Technol.; (United States)
Use of regenerable sulfur dioxide sorbents can improve the efficiency of fluidized-bed coal combustion systems. Calcium titanate, barium titanate, and calcium aluminate cement are shown to be attractive candidates for use as regenerable SO2 sorbents. In tests using thermogravimetry, each of these materials was considerably more reactive than the conventional sorbents, limestone and dolomite. The titanates retained their activity when cycled repeatedly between sulfating and regenerating conditions. Sorbent pellets formed from calcium aluminate cement were extremely strong, and tests showed that the attrition rate of these pellets was less than 1/30 of that experienced with limestone. Tests that involved incorporating flyash into calcium aluminate cement pellets and comparing the sulfation rate of pellets with and without flyash indicated that sorbent effects of calcium aluminate cement may be catalytic. (4 graphs, 11 references, 2 tables)
- Research Organization:
- Exxon Research and Engineering Co, NJ
- OSTI ID:
- 5657210
- Journal Information:
- Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 13:6; ISSN ESTHA
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
ALKALINE EARTH METAL COMPOUNDS
ALUMINATES
ALUMINIUM COMPOUNDS
BARIUM COMPOUNDS
CALCIUM COMPOUNDS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
DESULFURIZATION
ENERGY SOURCES
EQUIPMENT
FLUIDIZED-BED COMBUSTION
FOSSIL FUELS
FUELS
OXIDATION
OXYGEN COMPOUNDS
PERFORMANCE TESTING
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
SCRUBBERS
SORBENT RECOVERY SYSTEMS
TESTING
THERMOCHEMICAL PROCESSES
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
010800* -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
ALKALINE EARTH METAL COMPOUNDS
ALUMINATES
ALUMINIUM COMPOUNDS
BARIUM COMPOUNDS
CALCIUM COMPOUNDS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
DESULFURIZATION
ENERGY SOURCES
EQUIPMENT
FLUIDIZED-BED COMBUSTION
FOSSIL FUELS
FUELS
OXIDATION
OXYGEN COMPOUNDS
PERFORMANCE TESTING
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
SCRUBBERS
SORBENT RECOVERY SYSTEMS
TESTING
THERMOCHEMICAL PROCESSES
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS