| Issue |
Korean Journal of Chemical Engineering,
Vol.28, No.9, 1952-1955, 2011
Vol.28, No.9, 1952-1955, 2011
Sulfur fate during bituminous coal combustion in an oxy-fired circulating fluidized bed combustor
To clarify the sulfur transformation behavior during oxy-fired circulating fluidized bed (CFB) combustion, experiments on SO2 emission characteristics were carried out in a 50 kWth CFB combustor. Results show that SO2 emission is quite dependent on the bed temperature in different atmospheres without limestone injection. With Ca/S=2.5, SO2 emission in 21%O2/79%CO2 atmosphere is smaller than that in air atmosphere, but SO2 emission decreases with the increase of O2 concentration. The calcium forms in the ash prove the combination of calcination/carbonation and direct sulfation mechanism of limestone under oxy-combustion conditions. And the desulfurization efficiency of limestone (as deducting the self-retention efficiency from the total sulfur removal efficiency) increases from 40% to 52% as the O2 concentration increases from 21% to 40%.
[References]
- Buhre BJP, Elliott LK, Sheng CD, Gupta RP, Wall TF, Prog. Energy Combust. Sci., 31, 283, 2005
- Toftegaard MB, Brix J, Jensen PA, Glarborg P, Jensen AD, Prog. Energy Combust. Sci., 36, 581, 2010
- Croiset E, Thambimuthu K, Palmer A, Can. J. Chem. Eng., 78(2), 402, 2000
- Kiga T, Takano S, Kimura N, Omata K, Okawa M, Mori T, Energy Convers. Manage., 38, 129, 1997
- Hu Y, Naito S, Kobayashi N, Fuel., 79, 1925, 2000
- Tan YW, Croiset E, Douglas MA, Thambimuthu KV, Fuel., 85, 507, 2006
- Zheng LG, Furimsky E, Fuel Process. Technol., 81(1), 23, 2003
- Liu H, Okazaki K, Fuel., 82, 1427, 2003
- Liu H, Katagiri S, Kaneko U, Okazaki K, Fuel, 79(8), 945, 2000
- Chen CM, Zhao CS, Liang C, Pang KL, Fuel Process. Technol., 88(2), 171, 2007
- Prompubess C, Mekasut L, Piumsomboon P, Korean J. Chem. Eng., 6, 24, 2007
- Li Y, Yang L, You C, Qi H, Korean J. Chem. Eng., 26(4), 1155, 2009
- Czakiert T, Bis Z, Muskala W, Nowak W, Fuel Process. Technol., 7, 531, 2006
- Lawrence E, Stefan L, Eric E, In Proceedings of Clean Coal Conference, Florida, USA, 2009
- Myohanen K, Hyppanen T, Pikkarainen T, Chem. Eng. Technol., 32, 355, 2008
- Jia L, Tan Y, Anthony EJ, Energy Fuels., 24, 910, 2010
- Miura K, Mae K, Shimada M, Minami H, Energy Fuels, 15(3), 629, 2001
- Duan LB, Zhao CS, Zhou W, Liang C, Chen XP, J. Anal.Appl. Pyrol., 86, 269, 2009
- Duan LB, Zhao CS, Zhou W, Qu CR, Chen XP, Fuel Process. Technol., 92, 379, 2010
- Jin DY, Xu L, Yan JL, J. Anal. Appl. Pyrol., 82, 229, 2008
- Anthony EJ, Granatstein DL, Prog. Energy Combust. Sci., 27(2), 215, 2001
- Hu GL, Dam K, Wedel S, Hansen JP, Prog. Energy Combust. Sci., 32, 295, 2006
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