Computational Particle Fluid Dynamics Simulation on Combustion Characteristics of Blended Fuels of Coal, Biomass, and Oil Sludge in a 130 t h<sup>−1</sup> Circulating Fluidized Bed Boiler
In this study, the co-combustion of coal and biomass, and the tri-combustion of coal, biomass, and oil sludge in a 130 t h<sup>−1</sup> circulating fluidized bed (CFB) boiler are investigated via the computational particle fluid dynamics (CPFD) approach. Furthermore, the effect of biomas...
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MDPI AG
2023-12-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/17/1/149 |
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| author | Yang Wang Xiangyu Chen Liping Xu Mingwei Ma Xiaole Huang Feng Han Yong Zhou Chen Du Yaodong Da Lei Deng |
| author_facet | Yang Wang Xiangyu Chen Liping Xu Mingwei Ma Xiaole Huang Feng Han Yong Zhou Chen Du Yaodong Da Lei Deng |
| author_sort | Yang Wang |
| collection | DOAJ |
| description | In this study, the co-combustion of coal and biomass, and the tri-combustion of coal, biomass, and oil sludge in a 130 t h<sup>−1</sup> circulating fluidized bed (CFB) boiler are investigated via the computational particle fluid dynamics (CPFD) approach. Furthermore, the effect of biomass feeding position is also comprehensively evaluated. The results show that for the co-combustion of coal and biomass, the O<sub>2</sub> mole fraction at the furnace outlet rises from 0.0541 to 0.0640 as the biomass blending ratio enhances from 40% to 100%, while the CO<sub>2</sub> mole fraction reduces from 0.1357 to 0.1267. The mole fraction of NO<i><sub>x</sub></i> and SO<sub>2</sub> at the furnace outlet decreases from 4.5867 × 10<sup>−5</sup> to 3.9096 × 10<sup>−5</sup> and 2.8253 × 10<sup>−4</sup> to 4.6635 × 10<sup>−5</sup>, respectively. For the tri-combustion of three fuels, the average NO<i><sub>x</sub></i> mole fraction initially grows quickly and then declines gradually, ranging from 4.1173 × 10<sup>−5</sup> to 4.2556 × 10<sup>−5</sup>. The mole fraction of SO<sub>2</sub> at the furnace outlet increases from 3.5176 × 10<sup>−4</sup> to 4.7043 × 10<sup>−4</sup> when the ratio of oil sludge rises from 10% to 20%. The uniformity of temperature and gas components distribution is “new inlet > secondary air inlet > feed inlet”. As for the three inlet positions, the mole fractions of NO<i><sub>x</sub></i> at the furnace outlet are between 3.9096 × 10<sup>−5</sup> and 5.1537 × 10<sup>−5</sup>, while those for SO<sub>2</sub> are between 2.5978 × 10<sup>−4</sup> and 2.5278 × 10<sup>−4</sup>. |
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| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-08T15:08:12Z |
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| spelling | doaj.art-2e804af3ca9a436b973eea6acea853ac2024-01-10T14:56:00ZengMDPI AGEnergies1996-10732023-12-0117114910.3390/en17010149Computational Particle Fluid Dynamics Simulation on Combustion Characteristics of Blended Fuels of Coal, Biomass, and Oil Sludge in a 130 t h<sup>−1</sup> Circulating Fluidized Bed BoilerYang Wang0Xiangyu Chen1Liping Xu2Mingwei Ma3Xiaole Huang4Feng Han5Yong Zhou6Chen Du7Yaodong Da8Lei Deng9Engineering Technology Research Institute (Supervision Company), PetroChina Xinjiang Oilfield Company, Karamay 834000, ChinaEngineering Technology Research Institute (Supervision Company), PetroChina Xinjiang Oilfield Company, Karamay 834000, ChinaEngineering Technology Research Institute (Supervision Company), PetroChina Xinjiang Oilfield Company, Karamay 834000, ChinaEngineering Technology Research Institute (Supervision Company), PetroChina Xinjiang Oilfield Company, Karamay 834000, ChinaState Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaEngineering Technology Research Institute (Supervision Company), PetroChina Xinjiang Oilfield Company, Karamay 834000, ChinaEngineering Technology Research Institute (Supervision Company), PetroChina Xinjiang Oilfield Company, Karamay 834000, ChinaEngineering Technology Research Institute (Supervision Company), PetroChina Xinjiang Oilfield Company, Karamay 834000, ChinaState Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaIn this study, the co-combustion of coal and biomass, and the tri-combustion of coal, biomass, and oil sludge in a 130 t h<sup>−1</sup> circulating fluidized bed (CFB) boiler are investigated via the computational particle fluid dynamics (CPFD) approach. Furthermore, the effect of biomass feeding position is also comprehensively evaluated. The results show that for the co-combustion of coal and biomass, the O<sub>2</sub> mole fraction at the furnace outlet rises from 0.0541 to 0.0640 as the biomass blending ratio enhances from 40% to 100%, while the CO<sub>2</sub> mole fraction reduces from 0.1357 to 0.1267. The mole fraction of NO<i><sub>x</sub></i> and SO<sub>2</sub> at the furnace outlet decreases from 4.5867 × 10<sup>−5</sup> to 3.9096 × 10<sup>−5</sup> and 2.8253 × 10<sup>−4</sup> to 4.6635 × 10<sup>−5</sup>, respectively. For the tri-combustion of three fuels, the average NO<i><sub>x</sub></i> mole fraction initially grows quickly and then declines gradually, ranging from 4.1173 × 10<sup>−5</sup> to 4.2556 × 10<sup>−5</sup>. The mole fraction of SO<sub>2</sub> at the furnace outlet increases from 3.5176 × 10<sup>−4</sup> to 4.7043 × 10<sup>−4</sup> when the ratio of oil sludge rises from 10% to 20%. The uniformity of temperature and gas components distribution is “new inlet > secondary air inlet > feed inlet”. As for the three inlet positions, the mole fractions of NO<i><sub>x</sub></i> at the furnace outlet are between 3.9096 × 10<sup>−5</sup> and 5.1537 × 10<sup>−5</sup>, while those for SO<sub>2</sub> are between 2.5978 × 10<sup>−4</sup> and 2.5278 × 10<sup>−4</sup>.https://www.mdpi.com/1996-1073/17/1/149tri-combustionCPFDCFB boilercombustion characteristicsNO<i><sub>x</sub></i> emission |
| spellingShingle | Yang Wang Xiangyu Chen Liping Xu Mingwei Ma Xiaole Huang Feng Han Yong Zhou Chen Du Yaodong Da Lei Deng Computational Particle Fluid Dynamics Simulation on Combustion Characteristics of Blended Fuels of Coal, Biomass, and Oil Sludge in a 130 t h<sup>−1</sup> Circulating Fluidized Bed Boiler Energies tri-combustion CPFD CFB boiler combustion characteristics NO<i><sub>x</sub></i> emission |
| title | Computational Particle Fluid Dynamics Simulation on Combustion Characteristics of Blended Fuels of Coal, Biomass, and Oil Sludge in a 130 t h<sup>−1</sup> Circulating Fluidized Bed Boiler |
| title_full | Computational Particle Fluid Dynamics Simulation on Combustion Characteristics of Blended Fuels of Coal, Biomass, and Oil Sludge in a 130 t h<sup>−1</sup> Circulating Fluidized Bed Boiler |
| title_fullStr | Computational Particle Fluid Dynamics Simulation on Combustion Characteristics of Blended Fuels of Coal, Biomass, and Oil Sludge in a 130 t h<sup>−1</sup> Circulating Fluidized Bed Boiler |
| title_full_unstemmed | Computational Particle Fluid Dynamics Simulation on Combustion Characteristics of Blended Fuels of Coal, Biomass, and Oil Sludge in a 130 t h<sup>−1</sup> Circulating Fluidized Bed Boiler |
| title_short | Computational Particle Fluid Dynamics Simulation on Combustion Characteristics of Blended Fuels of Coal, Biomass, and Oil Sludge in a 130 t h<sup>−1</sup> Circulating Fluidized Bed Boiler |
| title_sort | computational particle fluid dynamics simulation on combustion characteristics of blended fuels of coal biomass and oil sludge in a 130 t h sup 1 sup circulating fluidized bed boiler |
| topic | tri-combustion CPFD CFB boiler combustion characteristics NO<i><sub>x</sub></i> emission |
| url | https://www.mdpi.com/1996-1073/17/1/149 |
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