High-resolution multi-species pollutant emission measurement by photoacoustic technique of NH3–H2 combustion in a turbulent swirl burner
Ammonia cracking enables the compensation of the inferior ignition characteristics of ammonia flames with hydrogen enrichment to approach those of natural gas-air mixture combustion. Therefore, the present paper focuses on the simultaneous measurement of NO, NO2, and N2O besides NH3, which are the m...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
2026
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| Sorozat: | FUEL
406 No. D |
| Tárgyszavak: | |
| doi: | 10.1016/j.fuel.2025.137167 |
| mtmt: | 36407296 |
| Online Access: | http://publicatio.bibl.u-szeged.hu/39613 |
| Tartalmi kivonat: | Ammonia cracking enables the compensation of the inferior ignition characteristics of ammonia flames with hydrogen enrichment to approach those of natural gas-air mixture combustion. Therefore, the present paper focuses on the simultaneous measurement of NO, NO2, and N2O besides NH3, which are the main pollutants of ammonia combustion. An advanced technique, photoacoustic emission analysis, was used, which allows for an effective 1–10 Hz temporal resolution compared to ∼30 s of conventional emission analyzers, enabling the detection of dynamic phenomena. The measurements were performed in an atmospheric swirl burner at 5–30 V/V% hydrogen enrichment, 10 and 13.35 kW thermal powers, and equivalence ratios in the range of 0.65–0.9. It was found that hydrogen enrichment reduces ammonia emissions at a low equivalence ratio, while the opposite may occur under a high equivalence ratio. Excessive hydrogen enrichment promotes NO and NO2 formation, while N2O emission increases at low equivalence ratios up to 20 V/V% hydrogen enrichment. The temporal emission data sets showed notable fluctuations under quasi-steady operation, unique to the highly reactive hydrogen and less reactive ammonia systems. The temporal data of NO showed a normal distribution, while NO2 was mostly normal, and N2O and NH3 followed an alternative distribution. |
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| Terjedelem/Fizikai jellemzők: | 13 |
| ISSN: | 0016-2361 |