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Received June 3, 2003
Accepted January 14, 2004
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A Study of Nitrous Oxide Decomposition over Calcium Oxide in Combustion Condition
Advanced Clean Energy Research Center, KIER, 71-2 Jangdong Yusunggu, Daejeon 305-343, Korea 1Department of Environmental Engineering, Taejon University, Daejeon 300-716, Korea
dshun@kier.re.kr
Korean Journal of Chemical Engineering, July 2004, 21(4), 890-894(5), 10.1007/BF02705535
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Abstract
A study of N2O decomposition reaction over a bed of CaO particles in a fixed bed reactor has been conducted. Effects of parameters such as concentration of inlet N2O, reaction temperature and effects of CO, CO2, O2, and NO gas presented in the combustion gas environment have been investigated. The experiment showed that the N2O decomposition reaction was accelerated by the increase of reaction temperature, and the existence of CO, while the reaction was hindered by the existence of CO2, NO. O2 also affected the N2O decomposition. Heterogeneous gas-solid reaction kinetics were proposed for the reaction conditions and compared with homogeneous reaction kinetics.
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de Soete GG, "The Nitrous Oxide Learning Path went from Durham to Turku," In Proceedings of the 6th International Workshop on Nitrous Oxide Emissions, Turku/bo, Finland, 5 (1994)
Johnsoson JE, Jensen A, Vaaben R, Dam-Johansen K, "Decomposition and Reduction of N2O over Limestone under FBC Conditions," In Proceedings of the 14th International Conference on Fluidized Bed Combustion, 953-966 (1997)
Johnsson JE, Johansen KD, "Reduction of N2O over Char and Bed Material from CFBC," In Proceedings of the 6th International Workshop on N2O Emissions, 285 (1994)
Klvana D, Song KS, Kirchnerova J, Korean J. Chem. Eng., 19(6), 932 (2002)
Ljungdahl B, Larfeldt J, Powder Technol., 120(1-2), 55 (2001)
Ljungdahl B, Larfeldt J, Proceedings of the 15th International Conference on Fluidized Bed Combustion, 953 (1997)
Panczyk T, Rudzinski W, Korean J. Chem. Eng., 21(1), 206 (2004)
Peter FB, Johansen KD, "Limestone Catalyzed Reduction of NO and N2O under Fluidized Bed Combustion Conditions," Proceedings of the 12th International Conference on Fluidized Bed Combustion, 779 (1993)
Satsuma A, Maeshima H, Watanabe K, Suzuki K, Hattori T, Catal. Today, 63(2-4), 347 (2000)
Shimizu T, Satoh M, Fujikawa T, Tonsho M, Inagaki M, Energy Fuels, 14(4), 862 (2000)
Shimizu T, Satoh M, Inagaki M, "Effect of Limestone Feed on Emission of NOx and N2O from a Circulating Fluidized Bed Combustion," In Proceedings of the 12th International Conference on Fluidized Bed Combustion, 611 (1993)
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Smith JM, "Chemical Engineering Kinetics," McGraw Hill (1981)
Suzuki Y, Moritomi H, Tanaka H, Energy Conv. Manag., 37, 1285 (1996)
