B. Aravind , Ziyu Wang , Syed Mashruk , Deanna A. Lacoste , Agustin Valera-Medina
{"title":"滑行电弧等离子体增强nh3 -空气混合气燃烧的新策略","authors":"B. Aravind , Ziyu Wang , Syed Mashruk , Deanna A. Lacoste , Agustin Valera-Medina","doi":"10.1016/j.proci.2025.105848","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the impact of gliding arc plasma (GAP) on the stability and emissions characteristics of a partially premixed ammonia (NH₃)-air swirling flames for wide ranges of global equivalence ratios (ϕ<sub>g</sub>). A novel dual-swirl GAP combustor, incorporating conical central electrode serving as a bluff body, is used to generate a rotating gliding arc plasma within the fuel lance. The plasma power is maintained below 1.4 % of the thermal power of the flame across all experimental conditions. This is the first study to apply GAP directly to the fuel side, facilitating premixing immediately after plasma interaction. The results reveal that plasma significantly enhances lean and rich blowout limits by 15–20 % and 30–35 %, respectively. This is mainly due to the continuous local ignition effect through heating and the generation of active species pools. Plasma actuation also results in a substantial reduction in NO and NO₂ emissions, decreasing by 40–80 % and 30–50 %, respectively, depending on ϕ<sub>g</sub> in the range of 0.76 to 1.05. Simultaneously, OH* and NH₂* intensities increase by 30–60 % and 70–80 %, respectively. This could indicate an increased NH₂ production favouring NO consumption reactions. A notable NH₃ slip occurs at ϕ<sub>g</sub> values exceeding 0.93 and 0.76, indicating incomplete combustion. Numerical results suggest that NO formation predominantly occurs via the HNO pathway, and that plasma conditions promote thermal De-NO<sub>x</sub> reactions, notably through NH₂ + NO → NNH + OH and NH₂ + NO → N₂ + H₂O reactions. This study provides critical insights into the potential of GAP technique for advancing NH₃ combustion technologies, offering promising applications for sustainable energy systems.</div></div>","PeriodicalId":408,"journal":{"name":"Proceedings of the Combustion Institute","volume":"41 ","pages":"Article 105848"},"PeriodicalIF":5.2000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Novel strategy for combustion enhancement of NH3-air mixture using gliding arc plasma\",\"authors\":\"B. Aravind , Ziyu Wang , Syed Mashruk , Deanna A. Lacoste , Agustin Valera-Medina\",\"doi\":\"10.1016/j.proci.2025.105848\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study investigates the impact of gliding arc plasma (GAP) on the stability and emissions characteristics of a partially premixed ammonia (NH₃)-air swirling flames for wide ranges of global equivalence ratios (ϕ<sub>g</sub>). A novel dual-swirl GAP combustor, incorporating conical central electrode serving as a bluff body, is used to generate a rotating gliding arc plasma within the fuel lance. The plasma power is maintained below 1.4 % of the thermal power of the flame across all experimental conditions. This is the first study to apply GAP directly to the fuel side, facilitating premixing immediately after plasma interaction. The results reveal that plasma significantly enhances lean and rich blowout limits by 15–20 % and 30–35 %, respectively. This is mainly due to the continuous local ignition effect through heating and the generation of active species pools. Plasma actuation also results in a substantial reduction in NO and NO₂ emissions, decreasing by 40–80 % and 30–50 %, respectively, depending on ϕ<sub>g</sub> in the range of 0.76 to 1.05. Simultaneously, OH* and NH₂* intensities increase by 30–60 % and 70–80 %, respectively. This could indicate an increased NH₂ production favouring NO consumption reactions. A notable NH₃ slip occurs at ϕ<sub>g</sub> values exceeding 0.93 and 0.76, indicating incomplete combustion. Numerical results suggest that NO formation predominantly occurs via the HNO pathway, and that plasma conditions promote thermal De-NO<sub>x</sub> reactions, notably through NH₂ + NO → NNH + OH and NH₂ + NO → N₂ + H₂O reactions. This study provides critical insights into the potential of GAP technique for advancing NH₃ combustion technologies, offering promising applications for sustainable energy systems.</div></div>\",\"PeriodicalId\":408,\"journal\":{\"name\":\"Proceedings of the Combustion Institute\",\"volume\":\"41 \",\"pages\":\"Article 105848\"},\"PeriodicalIF\":5.2000,\"publicationDate\":\"2025-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the Combustion Institute\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1540748925000628\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Combustion Institute","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1540748925000628","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Novel strategy for combustion enhancement of NH3-air mixture using gliding arc plasma
This study investigates the impact of gliding arc plasma (GAP) on the stability and emissions characteristics of a partially premixed ammonia (NH₃)-air swirling flames for wide ranges of global equivalence ratios (ϕg). A novel dual-swirl GAP combustor, incorporating conical central electrode serving as a bluff body, is used to generate a rotating gliding arc plasma within the fuel lance. The plasma power is maintained below 1.4 % of the thermal power of the flame across all experimental conditions. This is the first study to apply GAP directly to the fuel side, facilitating premixing immediately after plasma interaction. The results reveal that plasma significantly enhances lean and rich blowout limits by 15–20 % and 30–35 %, respectively. This is mainly due to the continuous local ignition effect through heating and the generation of active species pools. Plasma actuation also results in a substantial reduction in NO and NO₂ emissions, decreasing by 40–80 % and 30–50 %, respectively, depending on ϕg in the range of 0.76 to 1.05. Simultaneously, OH* and NH₂* intensities increase by 30–60 % and 70–80 %, respectively. This could indicate an increased NH₂ production favouring NO consumption reactions. A notable NH₃ slip occurs at ϕg values exceeding 0.93 and 0.76, indicating incomplete combustion. Numerical results suggest that NO formation predominantly occurs via the HNO pathway, and that plasma conditions promote thermal De-NOx reactions, notably through NH₂ + NO → NNH + OH and NH₂ + NO → N₂ + H₂O reactions. This study provides critical insights into the potential of GAP technique for advancing NH₃ combustion technologies, offering promising applications for sustainable energy systems.
期刊介绍:
The Proceedings of the Combustion Institute contains forefront contributions in fundamentals and applications of combustion science. For more than 50 years, the Combustion Institute has served as the peak international society for dissemination of scientific and technical research in the combustion field. In addition to author submissions, the Proceedings of the Combustion Institute includes the Institute''s prestigious invited strategic and topical reviews that represent indispensable resources for emergent research in the field. All papers are subjected to rigorous peer review.
Research papers and invited topical reviews; Reaction Kinetics; Soot, PAH, and other large molecules; Diagnostics; Laminar Flames; Turbulent Flames; Heterogeneous Combustion; Spray and Droplet Combustion; Detonations, Explosions & Supersonic Combustion; Fire Research; Stationary Combustion Systems; IC Engine and Gas Turbine Combustion; New Technology Concepts
The electronic version of Proceedings of the Combustion Institute contains supplemental material such as reaction mechanisms, illustrating movies, and other data.