{"title":"Dielectric-Boosted Gliding Arc Discharge for N2 Fixation into NOx","authors":"Xiangyi Meng, Na Lu, Kefeng Shang, Nan Jiang","doi":"10.1007/s11090-024-10474-8","DOIUrl":null,"url":null,"abstract":"<div><p>Plasma nitrogen fixation technology is of great significance in solving the problem of nitrogen fertilizer resource shortage, saving energy and reducing carbon emission, promoting sustainable development of agriculture and promoting resource recycling. To enhance the efficiency and treatment capacity of the two-dimensional, blade-type gliding arc nitrogen fixation reaction, a dielectric-boosted gliding arc discharge reactor with a 50-mm-diameter quartz dielectric (DBGAD<sub><i>Φ</i>50</sub>) was used to conduct N<sub>2</sub> fixation into NO<sub><i>x</i></sub>. The impact of reactor parameters and gas parameters on the nitrogen fixation reaction was systematically investigated in this study. The findings revealed that the DBGAD<sub><i>Φ</i>50</sub> significantly improved the nitrogen fixation effect. At a specific input energy of 2.7 kJ/L, the concentration of NO<sub><i>x</i></sub> generated by the dielectric-boosted gliding arc air discharge was 1.12 times that of the conventional gliding arc discharge (GAD). By utilizing the DBGAD<sub><i>Φ</i>50</sub> reactor, the energy efficiency of 6.83 g/kW h was achieved at a gas flow rate of 5.6 L/min. Appropriately increasing O<sub>2</sub> concentration favors the production of NO<sub><i>x</i></sub>. In the DBGAD<sub><i>Φ</i>50</sub>, the NO<sub><i>x</i></sub> concentration was 1.33 times higher than that in the air atmosphere when the added O<sub>2</sub> volume fraction reached 30%. Performance can be further enhanced by adding TiO<sub>2</sub> catalyst particles to the surface of the quartz dielectric to form a catalyst layer approximately 5 mm thick. At an O<sub>2</sub> concentration of 30%, the DBGAD<sub><i>Φ</i>50</sub> reactor loaded with TiO<sub>2</sub> increased NO<sub><i>x</i></sub> concentration by 26% and energy efficiency by 49%, respectively, resulting in an efficiency of 14.9 g/kW h compared to the case without catalyst.</p></div>","PeriodicalId":734,"journal":{"name":"Plasma Chemistry and Plasma Processing","volume":"44 4","pages":"1513 - 1528"},"PeriodicalIF":2.6000,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plasma Chemistry and Plasma Processing","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11090-024-10474-8","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Plasma nitrogen fixation technology is of great significance in solving the problem of nitrogen fertilizer resource shortage, saving energy and reducing carbon emission, promoting sustainable development of agriculture and promoting resource recycling. To enhance the efficiency and treatment capacity of the two-dimensional, blade-type gliding arc nitrogen fixation reaction, a dielectric-boosted gliding arc discharge reactor with a 50-mm-diameter quartz dielectric (DBGADΦ50) was used to conduct N2 fixation into NOx. The impact of reactor parameters and gas parameters on the nitrogen fixation reaction was systematically investigated in this study. The findings revealed that the DBGADΦ50 significantly improved the nitrogen fixation effect. At a specific input energy of 2.7 kJ/L, the concentration of NOx generated by the dielectric-boosted gliding arc air discharge was 1.12 times that of the conventional gliding arc discharge (GAD). By utilizing the DBGADΦ50 reactor, the energy efficiency of 6.83 g/kW h was achieved at a gas flow rate of 5.6 L/min. Appropriately increasing O2 concentration favors the production of NOx. In the DBGADΦ50, the NOx concentration was 1.33 times higher than that in the air atmosphere when the added O2 volume fraction reached 30%. Performance can be further enhanced by adding TiO2 catalyst particles to the surface of the quartz dielectric to form a catalyst layer approximately 5 mm thick. At an O2 concentration of 30%, the DBGADΦ50 reactor loaded with TiO2 increased NOx concentration by 26% and energy efficiency by 49%, respectively, resulting in an efficiency of 14.9 g/kW h compared to the case without catalyst.
期刊介绍：
Publishing original papers on fundamental and applied research in plasma chemistry and plasma processing, the scope of this journal includes processing plasmas ranging from non-thermal plasmas to thermal plasmas, and fundamental plasma studies as well as studies of specific plasma applications. Such applications include but are not limited to plasma catalysis, environmental processing including treatment of liquids and gases, biological applications of plasmas including plasma medicine and agriculture, surface modification and deposition, powder and nanostructure synthesis, energy applications including plasma combustion and reforming, resource recovery, coupling of plasmas and electrochemistry, and plasma etching. Studies of chemical kinetics in plasmas, and the interactions of plasmas with surfaces are also solicited. It is essential that submissions include substantial consideration of the role of the plasma, for example, the relevant plasma chemistry, plasma physics or plasma–surface interactions; manuscripts that consider solely the properties of materials or substances processed using a plasma are not within the journal’s scope.
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