유동층 반응기에서 세 가지 석회석의 CO2 흡수능력에 미치는 반복횟수와 SO2 농도의 영향

류호정; Ho-Jung Ryu

Journal of the Korean Industrial and Engineering Chemistry, Vol.17, No.1, 44-51, February, 2006

Effects of Multiple-Cycle Operation and SO2 Concentration on CO2 Capture Capacity of Three Limestones in a Fluidized Bed Reactor

류호정 ^†

한국에너지기술연구원 청정에너지연구 센터

Ho-Jung Ryu^†

Clean Energy Research Center, Korea Institute of Energy Research, Daejeon 305-343, Korea

E-mail:

초록

유동층 반응기에서 세 가지 석회석의 CO2 흡수능력에 미치는 반복횟수와 SO2 농도의 영향을 연구하였다. 측정된 CO2 흡수능력은 반복횟수가 증가하고 SO2 농도가 증가함에 따라 감소하였다. 한편 SO2 흡수능력은 반복횟수와 SO2 농도가 증가함에 따라 증가하였다. 총괄칼슘이용률은 반복횟수가 증가함에 따라 감소하였으나 총괄칼슘이용률에 대한 SO2 농도의 영향은 석회석의 종류에 따라 다른 경향을 나타내었다. Strassburg 석회석의 경우 총괄칼슘 이용률은 SO2 농도가 증가함에 따라 감소하는 반면, Luscar 및 단양 석회석의 경우에는 본 연구의 실험범위 내에서 SO2 농도에 무관한 경향을 나타내었다. 본 연구의 실험결과에 의하면 연소배가스 중 SO2의 존재는 석회석의 CO2 흡수능력을 감소시키며 석회석의 황하반응 경향이 CO2 흡수능력에 영향을 미치는 것으로 나타났다.

Effects of multiple-cycle operation and SO2 concentration on CO2 capture characteristics of three limestones were investigated in a fluidized bed reactor. For each of these sorbents, the measured CO2 capture capacity decreased as the number of cycles increased and as the SO2 concentration increased. On the other hand, the SO2 capture increased with the increased number of cycles and the SO2 concentration. The total calcium utilization decreased as the number of cycles increased, but the effect of SO2 concentrations on the total calcium utilization depended on the type of limestone. For Strassburg limestone, the total calcium utillization decreased with increasing SO2 concentration. However, for Luscar and Danyang limestones, the total calcium utilization was almost independent of SO2 concentration for the range investigated. The results showed that SO2 in flue gas reduced the CO2 capture capacity of limestone and that the sulfation pattern affected the CO2 capture capacity.

Keywords:CO2 capture;limestone;SO2;fluidized bed;sulfation pattern

[References]

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IEA Greenhouse Gas R&D Programme Report: "Greenhouse Gas Emissions from Power Stations", available on http://www.ieagreen.org.uk/sr1p.htm
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Curran GP, Fink CE, Gorin E, Adv. Chem. Ser., 69, 141 (1967)
Barker R, J. Appl. Chem. Biotechnol., 23, 733 (1973)
Silaban A, Narcida M, Harrison DP, Chem. Eng. Commun., 146, 149 (1996)
Shimizu T, Hirama T, Hosoda H, Kitano K, Inagaki M, Tejima K, Trans IChemE Part A., 77, 62 (1999)
Aihara M, Nagai T, Matsushita J, Negishi Y, Ohya H, Appl. Energy, 69(3), 225 (2001)
Abanades JC, Chem. Eng. J., 90(3), 303 (2002)
Barker EH, J. Chem. Soc., 464 (1962)
Silaban A, Harrison P, Chem. Eng. Commun., 137, 177 (1995)
Abanades JC, Alvarez D, Energy Fuels, 17(2), 308 (2003)
Laursen K, Duo W, Grace JR, Lim J, Fuel, 79(2), 153 (2000)
Laursen K, Duo W, Grace JR, Lim CJ, Fuel, 80, 1293 (2001)
Duo WL, Laursen K, Lim J, Grace J, Ind. Eng. Chem. Res., 43(18), 5653 (2004)

[Related Articles]

[1] 류호정, ETIS 분석지, 제 15권, 한국에너지기술연구원, 76 (2001)

[2] IEA Greenhouse Gas R&D Programme Report: "Greenhouse Gas Emissions from Power Stations", available on http://www.ieagreen.org.uk/sr1p.htm

[3] IEA Greenhouse Gas R&D Programme Report: "Carbon Dioxide Capture from the Power Stations" available on http://www.ieagreen.org.uk/sr2p.htm

[4] Salvador C, Lu D, Anthony EJ, Abanades JC, Chem. Eng. J., 96(1-3), 187 (2003)

[5] Curran GP, Fink CE, Gorin E, Adv. Chem. Ser., 69, 141 (1967)

[6] Barker R, J. Appl. Chem. Biotechnol., 23, 733 (1973)

[7] Silaban A, Narcida M, Harrison DP, Chem. Eng. Commun., 146, 149 (1996)

[8] Shimizu T, Hirama T, Hosoda H, Kitano K, Inagaki M, Tejima K, Trans IChemE Part A., 77, 62 (1999)

[9] Aihara M, Nagai T, Matsushita J, Negishi Y, Ohya H, Appl. Energy, 69(3), 225 (2001)

[10] Abanades JC, Chem. Eng. J., 90(3), 303 (2002)

[11] Barker EH, J. Chem. Soc., 464 (1962)

[12] Silaban A, Harrison P, Chem. Eng. Commun., 137, 177 (1995)

[13] Abanades JC, Alvarez D, Energy Fuels, 17(2), 308 (2003)

[14] Laursen K, Duo W, Grace JR, Lim J, Fuel, 79(2), 153 (2000)

[15] Laursen K, Duo W, Grace JR, Lim CJ, Fuel, 80, 1293 (2001)

[16] Duo WL, Laursen K, Lim J, Grace J, Ind. Eng. Chem. Res., 43(18), 5653 (2004)