Calcium spray dryer waste management: Design guidelines: Final report
Calcium spray drying is a commercially available and applied technology used to control SO/sub 2/ emissions. This process is rapidly gaining utility acceptance. Because physical and chemical properties of wastes generated by calcium spray drying differ from those of conventional coal combustion by-products (fly ash and scrubber sludge) typical waste management practices may need to be altered. This report presents technical guidelines for designing and operating a calcium spray drying waste management system. Waste transfer, storage, pretreatment/conditioning, transport and disposal are addressed. The report briefly describes eighteen existing or planned calcium spray drying waste management systems. Results of waste property tests conducted as part of this study, and test data from other studies are reported and compared. Conceptual designs of both new and retrofit calcium spray drying waste management systems also are presented to demonstrate the economic impact of spray drying on waste management. Parametric cost sensitivity analyses illustrate the impact of significant design parameters on waste management costs. Existing calcium spray drying waste management experiences, as well as spray drying waste property data provided the basis for guideline development. Because existing calcium spray drying facilities burn low sulfur coal, this report is considered applicable only to calcium spray drying wastes produced from low sulfur coal. At this time, calcium spray drying is not expected to be feasible for high sulfur coal applications.
- Research Organization:
- ICF Northwest, Richland, WA (USA); Electric Power Research Inst., Palo Alto, CA (USA)
- OSTI ID:
- 6222693
- Report Number(s):
- EPRI-CS-5312; ON: TI87920589
- Country of Publication:
- United States
- Language:
- English
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54 ENVIRONMENTAL SCIENCES
AEROSOL WASTES
ASHES
CHEMICAL REACTIONS
DESULFURIZATION
DISSOLUTION
DRYING
ECONOMICS
FLUE GAS
FLY ASH
GASEOUS WASTES
LAND RECLAMATION
LEACHING
MANAGEMENT
MONITORING
RESIDUES
SANITARY LANDFILLS
SEPARATION PROCESSES
SPRAY DRYING
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES