Mechanism of methanol and formaldehyde emissions from methanol-fueled engines
Methanol, as a low-carbon fuel, has broad application prospects in engines. The mechanism of methanol and formaldehyde was investigated respectively in a methanol premixed combustion test bench (PCTB) and a 304 stainless-steel flow reactor (SFR). The results of PCTB indicate that methanol cannot esc...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-04-01
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| Series: | Fuel Processing Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0378382025000013 |
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| author | Fangjie Liu Hengrui Guo Xinguo Zheng Haizhao Li Xin Wang |
| author_facet | Fangjie Liu Hengrui Guo Xinguo Zheng Haizhao Li Xin Wang |
| author_sort | Fangjie Liu |
| collection | DOAJ |
| description | Methanol, as a low-carbon fuel, has broad application prospects in engines. The mechanism of methanol and formaldehyde was investigated respectively in a methanol premixed combustion test bench (PCTB) and a 304 stainless-steel flow reactor (SFR). The results of PCTB indicate that methanol cannot escape from the flame surface to form unburned methanol emissions. Methanol was partially oxidized to formaldehyde in the exhaust system when methanol gas is fed into the upstream exhaust. The results of SFR indicate that the onset temperature of methanol oxidation is approximately 628 K. The methanol concentration decreases rapidly with increasing temperature from 628 to 950 K. Formaldehyde increases firstly and then decreases with increasing temperature. The concentration of formaldehyde reaches the maximum at the critical temperature. At flow velocities of 8, 12, 16, 20 and 24 m/s, the critical temperature is 812, 823.4, 830, 845.5 and 850 K, respectively. This work investigates the mechanism of methanol and formaldehyde at different temperatures, flow velocities, and oxygen concentrations, and provides valuable insights into the control of methanol and formaldehyde emissions from methanol engines. |
| format | Article |
| id | doaj-art-e34a3f59a27d499b8c831078221fb6fb |
| institution | Kabale University |
| issn | 0378-3820 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Fuel Processing Technology |
| spelling | doaj-art-e34a3f59a27d499b8c831078221fb6fb2025-02-09T04:59:41ZengElsevierFuel Processing Technology0378-38202025-04-01268108177Mechanism of methanol and formaldehyde emissions from methanol-fueled enginesFangjie Liu0Hengrui Guo1Xinguo Zheng2Haizhao Li3Xin Wang4Corresponding author.; College of Vehicle and Traffic Engineering, Henan University of Science and Technology, Luoyang 471003, ChinaCollege of Vehicle and Traffic Engineering, Henan University of Science and Technology, Luoyang 471003, ChinaCollege of Vehicle and Traffic Engineering, Henan University of Science and Technology, Luoyang 471003, ChinaCollege of Vehicle and Traffic Engineering, Henan University of Science and Technology, Luoyang 471003, ChinaCollege of Vehicle and Traffic Engineering, Henan University of Science and Technology, Luoyang 471003, ChinaMethanol, as a low-carbon fuel, has broad application prospects in engines. The mechanism of methanol and formaldehyde was investigated respectively in a methanol premixed combustion test bench (PCTB) and a 304 stainless-steel flow reactor (SFR). The results of PCTB indicate that methanol cannot escape from the flame surface to form unburned methanol emissions. Methanol was partially oxidized to formaldehyde in the exhaust system when methanol gas is fed into the upstream exhaust. The results of SFR indicate that the onset temperature of methanol oxidation is approximately 628 K. The methanol concentration decreases rapidly with increasing temperature from 628 to 950 K. Formaldehyde increases firstly and then decreases with increasing temperature. The concentration of formaldehyde reaches the maximum at the critical temperature. At flow velocities of 8, 12, 16, 20 and 24 m/s, the critical temperature is 812, 823.4, 830, 845.5 and 850 K, respectively. This work investigates the mechanism of methanol and formaldehyde at different temperatures, flow velocities, and oxygen concentrations, and provides valuable insights into the control of methanol and formaldehyde emissions from methanol engines.http://www.sciencedirect.com/science/article/pii/S0378382025000013Methanol-fueled engineEngine exhaust systemExhaust temperatureUnburned methanol oxidationFormaldehyde emission |
| spellingShingle | Fangjie Liu Hengrui Guo Xinguo Zheng Haizhao Li Xin Wang Mechanism of methanol and formaldehyde emissions from methanol-fueled engines Fuel Processing Technology Methanol-fueled engine Engine exhaust system Exhaust temperature Unburned methanol oxidation Formaldehyde emission |
| title | Mechanism of methanol and formaldehyde emissions from methanol-fueled engines |
| title_full | Mechanism of methanol and formaldehyde emissions from methanol-fueled engines |
| title_fullStr | Mechanism of methanol and formaldehyde emissions from methanol-fueled engines |
| title_full_unstemmed | Mechanism of methanol and formaldehyde emissions from methanol-fueled engines |
| title_short | Mechanism of methanol and formaldehyde emissions from methanol-fueled engines |
| title_sort | mechanism of methanol and formaldehyde emissions from methanol fueled engines |
| topic | Methanol-fueled engine Engine exhaust system Exhaust temperature Unburned methanol oxidation Formaldehyde emission |
| url | http://www.sciencedirect.com/science/article/pii/S0378382025000013 |
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