Kresna Social Science and Humanities Research
Full Lenght Article
Investigation on Slagging Fouling Potential in Coal Blending for PLTU with PC Boiler with Droptube Furnace Method
Abstract
The majority of power plants in Indonesia are Coal-Fired Power Plants (PLTU) which using coal as the main fuel. The coal used in the PLTU is coal that has been adjusted to the existing PLTU design. However, coal availability according to the initial design of the PLTU is running low and even almost non-existent. If the coal does not meet the PLTU design specifications is forced to be used as fuel, various problems will arise regarding to the capability and reliability of the power plant itself. Therefore, looking for coal alternatives that have similar specifications to the PLTU design is very important, to get these alternatives can be done by Blending coal from various specifications. The Blending product must be evaluated from various aspects, one of which is slagging and fouling. This research will focus on the aspects of slagging fouling resulting from the Blending of two different coals in terms of characteristics and specifications. Evaluation is carried out by taking samples and tested to make predictions based on AAS and AFT, burning in the Drop Tube Furnace (DTF), and performing SEM and XRD analysis of two coal Blending products. The results obtained are that the A and B Blending products are in an acceptable risk for direct testing on a larger scale (PLTU) or boiler simulator. However, Blending A has a greater potential for further research than Blending product B.
Keywords
Declarations
Conflict of Interest Statement
The author (s) declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
References
[2] M. Z. S. M. Zaid, M. A. Wahid, M. Mailah, M. A. Mazlan, and A. Saat, “Coal fired power plant: A review on coal Blending and emission issues,” AIP Conf. Proc., vol. 2062, no. 1, p. 20022, Jan. 2019, doi: 10.1063/1.5086569.
[3] N. Hare, M. Rasul, and S. Moazzem, “A review on boiler deposition/foulage prevention and removal techniques for power plant,” Jan. 2010.
[4] J.-R. Qiu, F. Li, Y. Zheng, C.-G. Zheng, and H.-C. Zhou, “The influences of mineral behaviour on Blended coal ash fusion characteristics,” Fuel, vol. 78, no. 8, pp. 963–969, 1999, doi: https://doi.org/10.1016/S0016-2361(99)00005-8.
[5] H. B. Vuthaluru and D. Zhang, “Effect of coal Blending on particle agglomeration and defluidisation during spouted-bed combustion of low-rank coals,” Fuel Process. Technol., vol. 70, no. 1, pp. 41–51, 2001, doi: https://doi.org/10.1016/S0378-3820(01)00130-8.
[6] M. Z. S. M. Zaid, M. A. Wahid, M. Mailah, M. A. Mazlan, and A. Saat, “Coal combustion analysis tool in coal fired power plant for slagging and fouling guidelines,” AIP Conf. Proc., vol. 2062, no. January, 2019, doi: 10.1063/1.5086575.
[7] G. Li, S. Li, Q. Huang, and Q. Yao, “Fine particulate formation and ash deposition during pulverized coal combustion of high-sodium lignite in a down-fired furnace,” Fuel, vol. 143, pp. 430–437, 2015, doi: https://doi.org/10.1016/j.fuel.2014.11.067.
[8] Babcock and Wilcox, Steam Its Generation and Use, 5th ed. USA: McDermott Company, 2005.
[9] E. Raask, Mineral impurities in coal combustion: behavior, problems, and remedial measures. United States: Hemisphere Publishing Corporation,Washington, DC, 1985.
[10] E. C. Winegartner and R. C. on C. and D. from C. ASME, Coal fouling and slagging parameters. [New York]: ASME, 1974.
[11] R. Bryer, “Fireside Slagging, Fouling, and High Temperature Corosion of Heat Transfer Surface due to Impurities in Steam Raising Fuel,” Prog. Energy Combust. Sci., pp. 29–120, 1996.
[12] P. Plaza, W. Ferens, A. Griffiths, N. Syred, and W. Rybak, “Predicting Slagging/Fouling Propensities of Solid Fuels with the Aid of Experimental and Modelling Techniques,” Oct. 2010.
[13] R. M. Hatt, “Fireside deposits in coal-fired utility boilers,” Prog. Energy Combust. Sci., vol. 16, no. 4, pp. 235–241, 1990, doi: https://doi.org/10.1016/0360-1285(90)90032-X.
[14] K. Laursen, F. Frandsen, and O. H. Larsen, “Ash Deposition Trials at Three Power Stations in Denmark,” Energy & Fuels, vol. 12, no. 2, pp. 429–442, Mar. 1998, doi: 10.1021/ef970106o.
[15] J. Li, M. Zhu, Z. Zhang, K. Zhang, G. Shen, and D. Zhang, “Characterisation of ash deposits on a probe at different temperatures during combustion of a Zhundong lignite in a drop tube furnace,” Fuel Process. Technol., vol. 144, pp. 155–163, 2016, doi: https://doi.org/10.1016/j.fuproc.2015.12.024.
[16] X. Wang et al., “The ash deposition mechanism in boilers burning Zhundong coal with high contents of sodium and calcium: A study from ash evaporating to condensing,” Appl. Therm. Eng., vol. 80, pp. 150–159, 2015, doi: https://doi.org/10.1016/j.applthermaleng.2015.01.051.
[17] A. P. Reifenstein, H. Kahraman, C. D. A. Coin, N. J. Calos, G. Miller, and P. Uwins, “Behaviour of selected minerals in an improved ash fusion test: quartz, potassium feldspar, sodium feldspar, kaolinite, illite, calcite, dolomite, siderite, pyrite and apatite,” Fuel, vol. 78, no. 12, pp. 1449–1461, 1999, doi: https://doi.org/10.1016/S0016-2361(99)00065-4.
[18] X. Qi, G. Song, W. Song, and S. Yang, “Effect of bed materials on slagging and fouling during Zhundong coal gasification,” Energy Explor. Exploit., vol. 35, p. 014459871770008, Apr. 2017, doi: 10.1177/0144598717700082.
Copyright and permissions
This work is licensed under a Creative Commons Attribution 4.0 International License.
Bibliographic Information
-
Submitted
12 February 2021 -
Revised
18 October 2021 -
Published
13 February 2021