Cfd analysis on the effects of different coal on combustion characteristics in coal-fired boiler
Coal quality is essential for the optimum functioning of coal-fired power plants. One of the issues associated with coal quality deterioration is poor combustion behaviour which could result in ash deposition and environmental issues. This paper presents a CFD investigation of flow and combustion pr...
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2023
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my.uniten.dspace-252052023-05-29T16:07:20Z Cfd analysis on the effects of different coal on combustion characteristics in coal-fired boiler Noor N.A.W.M. Hasini H. Samsuri M.S.H.M. Zulkifli M.M.F.M. 57194033093 6507435998 57219781730 57219776104 Coal quality is essential for the optimum functioning of coal-fired power plants. One of the issues associated with coal quality deterioration is poor combustion behaviour which could result in ash deposition and environmental issues. This paper presents a CFD investigation of flow and combustion process in a full-scale furnace. Three different sub-bituminous coals with different properties were tested namely Coal A, B and C. The aim is to predict the combustion performance of these coals by observing its flow, temperature and species concentration inside the furnace. The exact boiler furnace geometry obtained from boiler operator was translated into CFD model with very little modification made for optimizing mesh. Grid dependency test carried out prior to the work shows the current mesh scheme is sufficient to accurately resolve the flow field. The results of the study show that combustion temperature for Coal B is the highest at approximately 1400�C. Coal C is predicted to give the highest velocity peak at certain regions of the furnace and interestingly enough, the same coal shows the shortest flame length and thus requiring additional flow to achieve the same penetration compared to other coals. Tracing of oxygen concentration inside the furnace show minimum oxygen left in the rear pass given by Coal A, indicating optimum combustion. � 2020 PENERBIT AKADEMIA BARU-All rights reserved. Final 2023-05-29T08:07:20Z 2023-05-29T08:07:20Z 2020 Article 10.37934/cfdl.12.10.128138 2-s2.0-85095438211 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85095438211&doi=10.37934%2fcfdl.12.10.128138&partnerID=40&md5=1b74a8b07280969aad5d8dafa59f5233 https://irepository.uniten.edu.my/handle/123456789/25205 12 10 128 138 All Open Access, Hybrid Gold Penerbit Akademia Baru Scopus |
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Coal quality is essential for the optimum functioning of coal-fired power plants. One of the issues associated with coal quality deterioration is poor combustion behaviour which could result in ash deposition and environmental issues. This paper presents a CFD investigation of flow and combustion process in a full-scale furnace. Three different sub-bituminous coals with different properties were tested namely Coal A, B and C. The aim is to predict the combustion performance of these coals by observing its flow, temperature and species concentration inside the furnace. The exact boiler furnace geometry obtained from boiler operator was translated into CFD model with very little modification made for optimizing mesh. Grid dependency test carried out prior to the work shows the current mesh scheme is sufficient to accurately resolve the flow field. The results of the study show that combustion temperature for Coal B is the highest at approximately 1400�C. Coal C is predicted to give the highest velocity peak at certain regions of the furnace and interestingly enough, the same coal shows the shortest flame length and thus requiring additional flow to achieve the same penetration compared to other coals. Tracing of oxygen concentration inside the furnace show minimum oxygen left in the rear pass given by Coal A, indicating optimum combustion. � 2020 PENERBIT AKADEMIA BARU-All rights reserved. |
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57194033093 |
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57194033093 Noor N.A.W.M. Hasini H. Samsuri M.S.H.M. Zulkifli M.M.F.M. |
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Noor N.A.W.M. Hasini H. Samsuri M.S.H.M. Zulkifli M.M.F.M. |
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Noor N.A.W.M. Hasini H. Samsuri M.S.H.M. Zulkifli M.M.F.M. Cfd analysis on the effects of different coal on combustion characteristics in coal-fired boiler |
author_sort |
Noor N.A.W.M. |
title |
Cfd analysis on the effects of different coal on combustion characteristics in coal-fired boiler |
title_short |
Cfd analysis on the effects of different coal on combustion characteristics in coal-fired boiler |
title_full |
Cfd analysis on the effects of different coal on combustion characteristics in coal-fired boiler |
title_fullStr |
Cfd analysis on the effects of different coal on combustion characteristics in coal-fired boiler |
title_full_unstemmed |
Cfd analysis on the effects of different coal on combustion characteristics in coal-fired boiler |
title_sort |
cfd analysis on the effects of different coal on combustion characteristics in coal-fired boiler |
publisher |
Penerbit Akademia Baru |
publishDate |
2023 |
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1806424472467537920 |
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13.19449 |