Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-20T04:56:14.601Z Has data issue: false hasContentIssue false
  • English
  • Français

Properties and Environmental Considerations Related to AFBC Solid Residues

Published online by Cambridge University Press:  25 February 2011

E. E. Berry  and
E. J. Anthony
E. E. Berry
Affiliation:
PO Box 7261, Oakville, Ontario, Canada
E. J. Anthony
Affiliation:
E.J. Anthony, CANMET, Energy Mines and Resources Canada, Ottawa, Ontario, Canada
Get access

Abstract

Atmospheric-pressure fluidized bed combustion (AFBC) produces solid residues that are different from the familiar pulverized coal ashes. When limestone beds are used to adsorb SOx, high-Ca residues, comprised largely of CaO and SO4, are produced. Leachates from high-Ca AFBC residues are strongly alkaline (pH >11) and contain high levels of dissolved solids (TDS >3000 mg/L). If water is added during handling, hydration of CaO may cause a temperature rise and hydration of CaSO4 may result in premature hardening of the residues. Trace elements and organic components may leach from disposal sites. This paper presents an overview of the nature of AFBC residues and the factors influencing their disposal.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 86: Symposium N – Fly Ash and Coal Conversion By-Products III , 1986 , 49
Copyright
Copyright © Materials Research Society 1987

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Minnick, J.L., Development of Potential uses for the Residue from Fluidized Bed Combustion Processes, Reports Under Contract No. EF-77-C-01-2549.Google Scholar
2. Minnick, J.L., Development of Potential Uses for the Residue from Fluidized Bed Combustion Processes. Reports Under Contract No. DE-AC21-77-ET10415.Google Scholar
3. Miller, R.H., Proc. 5th Int. Conf. Fluidized Bed Combustion, Vol. II (1977) pp. 800–816.Google Scholar
4. Collins, R.J., J. Testing and Evaluation 8, 259–264 (1980).Google Scholar
5. Sun, C.C., et al., Experimental/Engineering Support for EPA's FBC Program: Final Report Vol. III. Solid Residues Study. EPA-600/7-80-015C (1980).Google Scholar
6. Stone, R. and Kahle, R.L., Environmental Assessment of Solid Residues from Fluidized Bed Combustion Processes, Report PB-282–940 (1978).Google Scholar
7. Berry, E.E., An Evaluation of Uses for AFBC Solid Wastes: Final Report, DSS Contract 0SQ83-00077 (1984).Google Scholar
8. Lotze, J., and Wargalla, G., Zem.-Kalk-Gips, 38, 239 (1985).Google Scholar
9. Johnson, I., Sorbent Utilization, Enhancement and Regeneration, Proc. DOE/WVU Conf. Fluidized-bed Combustion System Design and Operation (Morganstown, West Virginia, October 27–29, 1980) pp. 333–360.Google Scholar
10. McLaren, J. and Williams, D.F., J. Institute of Fuel, pp. 303–308 (1969).Google Scholar
11. Kalmanovitch, D.P., Razbin, V.V., Anthony, E.J., Desai, D.L. and Friederich, F.D., The Microstructural Characteristics of AFBC Limestone Sorbent Particles, Proc. 8th Int. Conf. Fluidized Bed Combustion, Vol. I, (1985) pp. 53–64.Google Scholar
12. Anthony, E.J., The Presence of Calcium Sulphide in Solid Wastes from Circulating Fluidized Bed Combustors, CANMET Report, ERL Division Report 86-53(TR) (1986).Google Scholar
13. Dearborn Environmental Consulting Services, Preliminary Evaluation of AFBC Solid Waste Properties, Environment Canada Report, EPS 3/PG/2 (1985).Google Scholar
14. Grimshaw, T.W., Minear, R.A., Eklund, A.G., Little, W.M. and Williamson, H.J., Assessment of Fluidized Bed Combustion Solid Wastes for Land Disposal, U.S. EPA Report, EPA 600/7-85/007a (1985).Google Scholar
15. Sun, C.C., and Peterson, C.H., Fluidized Bed Combustion Residue Disposal Environmental Impact and Utilization, Proc. 6th Int. Conf. on Fluidized Bed Combustion, (1980).Google Scholar
16. Berry, E.E., An Evaluation of Uses for AFBC Solid Wastes - Phase II, Examination of Waste from CFB Summerside as a Potential Soil-cement Component: Final Report, DSS Contract 0SQ84-00037 (1984).Google Scholar
17. INTEG Ltd., Investigation of the Utilization and Disposal of Boiler Ash from C.F.B. Summerside, P.E.I., CANMET CONTRACT 78-9037-1, Interim Report (1979).Google Scholar
18. Lotze, J. and Wargalla, G., Zem. -Kalk -Gips., 38 374 (1985).Google Scholar
19. Berry, E.E. and Anthony, E.J., Evaluation of Potential Uses of AFBC Solid Wastes. This volume.Google Scholar
20. Jones, F.E., Trans. Faraday Soc. 35, 1484 (1939).Google Scholar