Optimization of the Air Distribution in a Biomass Grate-Fired Furnace
This study utilized a combination of FLIC(1D3.2C) and FLUENT(2021R2) software to optimize the primary air distribution along the grate and the performance of a straw briquette combustion furnace of a 7 MW unit in China used to produce hot air for drying grain. Three air distribution modes, namely fr...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/22/7634 |
| _version_ | 1797459432344387584 |
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| author | Qingjia Wang Man Zhang Fan Xiao Hairui Wang Yan Jin Nan Hu Hairui Yang |
| author_facet | Qingjia Wang Man Zhang Fan Xiao Hairui Wang Yan Jin Nan Hu Hairui Yang |
| author_sort | Qingjia Wang |
| collection | DOAJ |
| description | This study utilized a combination of FLIC(1D3.2C) and FLUENT(2021R2) software to optimize the primary air distribution along the grate and the performance of a straw briquette combustion furnace of a 7 MW unit in China used to produce hot air for drying grain. Three air distribution modes, namely front-enhanced, uniform, and rear-enhanced modes, were analyzed to determine their effect on the flue gas components above the grate, the temperature field in the furnace, and the nitrogen oxide concentration at the furnace outlet. The results of the calculations showed that the NO<sub>x</sub> emissions for the front-enhanced, uniform, and rear-enhanced modes were 133.5 mg/Nm<sup>3</sup>, 104.4 mg/Nm<sup>3</sup>, and 76.6 mg/Nm<sup>3</sup>, respectively. It was found that the rear-enhanced mode can expand the biomass drying, devolatilization, and combustion zone, thus improving the furnace combustion performance and decreasing NO<sub>x</sub> emissions. These findings can provide useful guidance for optimizing biomass chain-grate-firing furnaces. |
| first_indexed | 2024-03-09T16:52:10Z |
| format | Article |
| id | doaj.art-d6ad8d0649e14c6ea0b1f081186bece1 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T16:52:10Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-d6ad8d0649e14c6ea0b1f081186bece12023-11-24T14:40:36ZengMDPI AGEnergies1996-10732023-11-011622763410.3390/en16227634Optimization of the Air Distribution in a Biomass Grate-Fired FurnaceQingjia Wang0Man Zhang1Fan Xiao2Hairui Wang3Yan Jin4Nan Hu5Hairui Yang6School of Energy and Power Engineering, Changchun Institute of Technology, Changchun 130012, ChinaState Key Laboratory of Power Systems, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Power Systems, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, ChinaSchool of Energy and Power Engineering, Changchun Institute of Technology, Changchun 130012, ChinaCollege of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaSchool of Energy and Power Engineering, Changchun Institute of Technology, Changchun 130012, ChinaState Key Laboratory of Power Systems, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, ChinaThis study utilized a combination of FLIC(1D3.2C) and FLUENT(2021R2) software to optimize the primary air distribution along the grate and the performance of a straw briquette combustion furnace of a 7 MW unit in China used to produce hot air for drying grain. Three air distribution modes, namely front-enhanced, uniform, and rear-enhanced modes, were analyzed to determine their effect on the flue gas components above the grate, the temperature field in the furnace, and the nitrogen oxide concentration at the furnace outlet. The results of the calculations showed that the NO<sub>x</sub> emissions for the front-enhanced, uniform, and rear-enhanced modes were 133.5 mg/Nm<sup>3</sup>, 104.4 mg/Nm<sup>3</sup>, and 76.6 mg/Nm<sup>3</sup>, respectively. It was found that the rear-enhanced mode can expand the biomass drying, devolatilization, and combustion zone, thus improving the furnace combustion performance and decreasing NO<sub>x</sub> emissions. These findings can provide useful guidance for optimizing biomass chain-grate-firing furnaces.https://www.mdpi.com/1996-1073/16/22/7634biomasshot-air furnacegrate firingnumerical simulationNO<sub>x</sub> emission |
| spellingShingle | Qingjia Wang Man Zhang Fan Xiao Hairui Wang Yan Jin Nan Hu Hairui Yang Optimization of the Air Distribution in a Biomass Grate-Fired Furnace Energies biomass hot-air furnace grate firing numerical simulation NO<sub>x</sub> emission |
| title | Optimization of the Air Distribution in a Biomass Grate-Fired Furnace |
| title_full | Optimization of the Air Distribution in a Biomass Grate-Fired Furnace |
| title_fullStr | Optimization of the Air Distribution in a Biomass Grate-Fired Furnace |
| title_full_unstemmed | Optimization of the Air Distribution in a Biomass Grate-Fired Furnace |
| title_short | Optimization of the Air Distribution in a Biomass Grate-Fired Furnace |
| title_sort | optimization of the air distribution in a biomass grate fired furnace |
| topic | biomass hot-air furnace grate firing numerical simulation NO<sub>x</sub> emission |
| url | https://www.mdpi.com/1996-1073/16/22/7634 |
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