Articles & Issues
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
-
Received December 3, 2010
Accepted February 18, 2011
-
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright © KIChE. All rights reserved.
All issues
Characteristics of clinker formation in a circulating fluidized bed boiler firing Korean anthracite
Korea Electric Power Research Institute (KEPRI), KEPCO, Daejeon 305-380, Korea
jmlee@kepri.re.kr
Korean Journal of Chemical Engineering, August 2011, 28(8), 1791-1796(6), 10.1007/s11814-011-0040-6
Download PDF
Abstract
To shed light on the causes of clinker formation during the initial operation period of the Tonghae circulating fluidized bed (CFB) boiler, which uses Korean anthracite as fuel, the properties of ash, sand and limestone particles and the mixtures of each gradient have been characterized. The clinkers formed in the loopseals and the fluidized bed ash cooler (FBAC) of the CFB boiler were also characterized by analyzing the composition, the surface phenomena and the crystal structure of the clinkers. As a result, the black clinker was found to come from the sand particles and the composition of the white clinker was found to be similar to that of ash particles. The cause of the clinker formation in the FBAC proved that ash was sticking to molten or sintered phases in the high temperature regions in the boiler. On the other hand, the composition of the ash changed with the particle size, showing an enrichment of Fe2O3 as the particle size decreased. Also, the ash particles between 75-100 μm contained more than 11% CaO which resulted in low initial deformation temperature of the particles. So it is possible to explain that the amount of Fe and Ca in the fine particles of the ash plays a crucial role in the formation of agglomerates in the CFB boiler.
References
Ommen JR, Monitoring fluidized bed hydrodynamics, Ph.D. Thesis, Delft University Press, Netherlands (2001)
Lee JM, Kim DW, Kim JS, Kim JJ, J. Chem. Eng. Jpn., 41(7), 710 (2008)
Kim DW, Lee JM, Kim JS, Kim JJ, Korean J. Chem. Eng., 24(3), 461 (2007)
Lee JM, Kim JS, Kim JJ, Ji PS, 13th Korea-US Joint Workshop on Energy & Environment, Nevada, USA, 41 (1999)
Lee JM, Kim JS, Kim JJ, Energy., 20, 111 (2003)
West SS, Fuel and Energy Abstract., 36, 355 (1993)
Zhang J, Zhao Y, Wei C, Yao B, Coal Geology., 81, 309 (2010)
Matjie RH, Li Z, Fuel., 87, 857 (2008)
Ilic M, Cheeseman C, Fuel., 82, 331 (2003)
Mackenzie RC, Differential Thermal Analysis., 2, 276 (1972)
VASSILEV SV, KITANO K, TAKEDA S, TSURUE T, Fuel Process. Technol., 45(1), 27 (1995)
Lee JM, Kim DW, Kim JS, Kim JJ, J. Chem. Eng. Jpn., 41(7), 710 (2008)
Kim DW, Lee JM, Kim JS, Kim JJ, Korean J. Chem. Eng., 24(3), 461 (2007)
Lee JM, Kim JS, Kim JJ, Ji PS, 13th Korea-US Joint Workshop on Energy & Environment, Nevada, USA, 41 (1999)
Lee JM, Kim JS, Kim JJ, Energy., 20, 111 (2003)
West SS, Fuel and Energy Abstract., 36, 355 (1993)
Zhang J, Zhao Y, Wei C, Yao B, Coal Geology., 81, 309 (2010)
Matjie RH, Li Z, Fuel., 87, 857 (2008)
Ilic M, Cheeseman C, Fuel., 82, 331 (2003)
Mackenzie RC, Differential Thermal Analysis., 2, 276 (1972)
VASSILEV SV, KITANO K, TAKEDA S, TSURUE T, Fuel Process. Technol., 45(1), 27 (1995)
