Demonstration of a hydration process for reactivating partially sulfated limestone sorbents
The utilization of limestione sorbent for the removal of SO/sub 2/ in coal combustion in an atmospheric fluidized-bed combustor (AFBC) can be markedly increased by reactivating the partially sulfated limestone for reuse in the combustor. Such reuse would reduce costs and the environmental impact of quarrying and disposing of large quantities of limestone. The reactivation process consists of hydrating the partially sulfated limestone by treatment with water. A demonstration of the hydration process and the reuse of the reactivated limestone were carried out at Grand Forks Energy Technology Center (GFETC) in cooperation with Argonne National Laboratory (ANL). The data obtained in the GFETC 0.2-m/sup 2/ AFBC are compared with those obtained earlier in the ANL 0.02-m/sup 2/ AFBC. Marked enhancement of calcium utilization was achieved in both studies, but differences were noted in the degree of enhancement and in the Ca/S mole ratios required to maintain SO/sub 2/ in the off-gas at an acceptable level.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 5279467
- Report Number(s):
- ANL/CEN/FE-80-23; ON: DE82019236
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
01 COAL, LIGNITE, AND PEAT
COAL
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
LIMESTONE
HYDRATION
REGENERATION
SULFUR DIOXIDE
AIR POLLUTION ABATEMENT
MATERIALS RECOVERY
RECYCLING
SORPTIVE PROPERTIES
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
COMBUSTORS
ENERGY SOURCES
FOSSIL FUELS
FUELS
MANAGEMENT
MATERIALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
PROCESSING
RECOVERY
ROCKS
SEDIMENTARY ROCKS
SOLVATION
SULFUR COMPOUNDS
SULFUR OXIDES
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
200200* - Fossil-Fueled Power Plants- Waste Management
421000 - Engineering- Combustion Systems
014000 - Coal
Lignite
& Peat- Combustion