Effect of rotating gliding discharges on the lean blow-off limit of biogas flames  

作　　者：Muhammad Saqib AKHTAR Mhedine ALICHERIF Bing WANG Deanna A.LACOSTE 

机构地区：[1]School of Aerospace Engineering,Tsinghua University,Beijing 10084,People’s Republic of China [2]King Abdullah University of Science and Technology,Physical Science and Engineering Division,Clean Combustion Research Center,Thuwal 23955-6900,Saudi Arabia

出　　处：《Plasma Science and Technology》2024年第10期116-122,共7页等离子体科学和技术（英文版）

基　　金：partly funded by the King Abdullah University of Science and Technology,through the baseline fund BAS/1/1396-01-01;the partial financial support from Sichuan Science and Technology Program(Nos.2021YFSY0042 and 2021YFG0360)。

摘　　要：This study investigates the effect of a rotating gliding discharge on synthetic biogas combustion at atmospheric pressure.Synthetic biogas was produced by mixing methane and carbon dioxide.Three mixtures were considered:100%/0%,70%/30%,and 50%/50%of methane and carbon dioxide,respectively.The plasma effect was investigated in a low-swirl-number burner equipped with a high-voltage electrode to produce gliding discharges.The effect of plasma on the stability limits of the flame is reported for several electrical powers.During plasma-assisted combustion,the lean blow-off limits of biogas-air flames were significantly improved,which agrees with what can be found in the literature for other fuels.The electrical parameters of the discharge and the plasma emissions were measured using electric probes and emission spectroscopy,respectively.The mixture with the CO_(2)dilution was associated with a higher reduced electric field and higher ion production.A better understanding of the excited-species concentration evolution during plasma is necessary and will be investigated in future work.

关 键 词：plasma-assisted combustion non-equilibrium plasma METHANE carbon dioxide 

分 类 号：TQ038[化学工程]