Experimental study on the premixed lean-burn in alumina particles based porous burner
Coal mine methane (CMM) emissions from underground coal mines is becoming a global problem since it produces greenhouse gas contributing to global warming. It is critical to reduce low-concentration CMM(LCM) and ventilation air methane (VAM) emissions, which has become the focus to be solved urgentl...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-11-01
|
| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484721011203 |
| _version_ | 1819099843236200448 |
|---|---|
| author | Lei Li Zhongguang Sun Yongjiang Luo Yunpei Liang Xinyu Wang Kequan Wang |
| author_facet | Lei Li Zhongguang Sun Yongjiang Luo Yunpei Liang Xinyu Wang Kequan Wang |
| author_sort | Lei Li |
| collection | DOAJ |
| description | Coal mine methane (CMM) emissions from underground coal mines is becoming a global problem since it produces greenhouse gas contributing to global warming. It is critical to reduce low-concentration CMM(LCM) and ventilation air methane (VAM) emissions, which has become the focus to be solved urgently. One of the methods is utilizing this VAM as a fuel by mixing of CMM with the help of the porous burning system. In order to optimize the performance of a porous burning system composed of alumina particles, a series of complex porous media burners composed of two layers of alumina particles were proposed, after which a laboratory experimental system based on these burners was built. The lean-burn limits, lean-burn stabilization temperature and lean-burn fluctuation patterns of the burners built in this study were tested and reported in this paper. Results show that cylindrical burner with equal segment length of 3 mm diameter alumina particles at the upstream and 6 mm diameter alumina particles at the downstream is suitable for lean-burn with low flow rate, and cone burner with equal segment length of 3 mm diameter alumina particles at the upstream and 6 mm diameter alumina particles at the downstream is more suitable for lean-burn with high flow rate and low methane concentration, and the lean-burn limits for cone burner with volume methane concentration of 1.5% is obtained, which is the lowest lean-burn limit have reported at present. |
| first_indexed | 2024-12-22T00:53:19Z |
| format | Article |
| id | doaj.art-9a34974c172648d69916713e4d66fe1c |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-12-22T00:53:19Z |
| publishDate | 2021-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-9a34974c172648d69916713e4d66fe1c2022-12-21T18:44:23ZengElsevierEnergy Reports2352-48472021-11-01774347444Experimental study on the premixed lean-burn in alumina particles based porous burnerLei Li0Zhongguang Sun1Yongjiang Luo2Yunpei Liang3Xinyu Wang4Kequan Wang5State Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering, Chongqing University, Chongqing, China; National Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing Research Institute of China Coal Technology and Engineering Group Crop., Chongqing, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering, Chongqing University, Chongqing, China; National Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing Research Institute of China Coal Technology and Engineering Group Crop., Chongqing, ChinaState Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering, Chongqing University, Chongqing, China; Corresponding authors.State Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering, Chongqing University, Chongqing, China; Corresponding authors.State Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering, Chongqing University, Chongqing, ChinaNational Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling, Chongqing Research Institute of China Coal Technology and Engineering Group Crop., Chongqing, ChinaCoal mine methane (CMM) emissions from underground coal mines is becoming a global problem since it produces greenhouse gas contributing to global warming. It is critical to reduce low-concentration CMM(LCM) and ventilation air methane (VAM) emissions, which has become the focus to be solved urgently. One of the methods is utilizing this VAM as a fuel by mixing of CMM with the help of the porous burning system. In order to optimize the performance of a porous burning system composed of alumina particles, a series of complex porous media burners composed of two layers of alumina particles were proposed, after which a laboratory experimental system based on these burners was built. The lean-burn limits, lean-burn stabilization temperature and lean-burn fluctuation patterns of the burners built in this study were tested and reported in this paper. Results show that cylindrical burner with equal segment length of 3 mm diameter alumina particles at the upstream and 6 mm diameter alumina particles at the downstream is suitable for lean-burn with low flow rate, and cone burner with equal segment length of 3 mm diameter alumina particles at the upstream and 6 mm diameter alumina particles at the downstream is more suitable for lean-burn with high flow rate and low methane concentration, and the lean-burn limits for cone burner with volume methane concentration of 1.5% is obtained, which is the lowest lean-burn limit have reported at present.http://www.sciencedirect.com/science/article/pii/S2352484721011203Low-concentration methanePremixed combustionLean-burnPorous burner |
| spellingShingle | Lei Li Zhongguang Sun Yongjiang Luo Yunpei Liang Xinyu Wang Kequan Wang Experimental study on the premixed lean-burn in alumina particles based porous burner Energy Reports Low-concentration methane Premixed combustion Lean-burn Porous burner |
| title | Experimental study on the premixed lean-burn in alumina particles based porous burner |
| title_full | Experimental study on the premixed lean-burn in alumina particles based porous burner |
| title_fullStr | Experimental study on the premixed lean-burn in alumina particles based porous burner |
| title_full_unstemmed | Experimental study on the premixed lean-burn in alumina particles based porous burner |
| title_short | Experimental study on the premixed lean-burn in alumina particles based porous burner |
| title_sort | experimental study on the premixed lean burn in alumina particles based porous burner |
| topic | Low-concentration methane Premixed combustion Lean-burn Porous burner |
| url | http://www.sciencedirect.com/science/article/pii/S2352484721011203 |
| work_keys_str_mv | AT leili experimentalstudyonthepremixedleanburninaluminaparticlesbasedporousburner AT zhongguangsun experimentalstudyonthepremixedleanburninaluminaparticlesbasedporousburner AT yongjiangluo experimentalstudyonthepremixedleanburninaluminaparticlesbasedporousburner AT yunpeiliang experimentalstudyonthepremixedleanburninaluminaparticlesbasedporousburner AT xinyuwang experimentalstudyonthepremixedleanburninaluminaparticlesbasedporousburner AT kequanwang experimentalstudyonthepremixedleanburninaluminaparticlesbasedporousburner |