CAPTURE OF SO2 BY LIMESTONE IN A 71 MWe PRESSURIZED FLUIDIZED BED BOILER

Abstract

A 71 MWe pressurized fluidized bed coal combustor was operated. A wide variety of coals were burnt under fly ash recycle conditions. Limestone was fed to the combustor as bed material as well as sorbent. The emission of SO2 and limestone attrition rate were measured. A simple mathematical model of SO2 capture by limestone with intermittent solid attrition was applied to the analysis of the present experimental results. Except for high sulfur fuel, the results of the present model agreed with the experimental results.

Keywords

Dates

  • Submission Date2003-02-12
  • Revision Date2003-03-05
  • Acceptance Date2003-03-06

References

  1. [1]Snow, M.J.H., Longwell, J.P., Sarofim, A.F., Ind. Eng. Chem. Res., 27 (1988) 268 -273
  2. [2]Hajaligol, M.R., Longwell, J.P., Sarofim, A.F., Ind. Eng. Chem. Res., 27 (1988) 2203-2210
  3. [3] Iisa, K., Hupa, M., J. Inst. Energy, 65 (1992) 201 - 205
  4. [4] Krishnan, S.V, Sotirchos, S.V., Canadian J. Chem. Eng., 71 (1993) 244-255
  5. [5] Krishnan, S.V, Sotirchos, S.V., Canadian J. Chem. Eng., 71 (1993) 734-745
  6. [6] Zevenhoven, R., Yrjas, P., Hupa, M., Fuel, 77 (1998) 285-292
  7. [7] Qui, K. Lindqvist, O., Chem. Eng. Sci., 55 (2000) 3091-3100
  8. [8] Sakuno, S., Shimizu, T., Misawa, N., Suzuki, N., Ueda, H., Sasatsu, H., Gotou, H. Nihon-Energy-Gakkai-Shi (J. Jpn. Inst. Energy), 80 (2001) 747 - 757 (in Japanese)
  9. [9] Shimizu, T., Peglow, M., Sakuno, S., Misawa, N., Suzuki, N., Ueda, H., Sasatsu, H., Gotou, H., Chem. Eng. Sci., 56 (2001) 6719-6728
  10. [10] Shimizu, T., Peglow, M., Yamagiwa, K., Tanaka, M., Sakuno, S., Misawa, N., Suzuki, N., Ueda, H., Sasatsu, H., Gotou, H., Chem. Eng. Sci., 57 (2002) 4117-4128
  11. [11] Shimizu, T., Peglow, M., Yamagiwa, K., Tanaka, M., Chem. Eng. Sci.(in press)
  12. [12] Suzuki, Y., Kaatu-ryuudousou-systemu-no-jituyouka-kouennkai (Seminar on practical use of pressurized fluidized bed combustion system), (Tokyo, Dec.6, 2000, Soc. Chem. Engrs. Japan), (2000) pp.1-10 (in Japanese)
  13. [13] Kunii, D. and Levenspiel, O. (1991), Fluidization Engineering (2nd Edition), Butterworth- Heinemann, Stoneham, MA, USA, Chapter 12
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