大气压氩等离子体裂解正癸烷实验研究
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摘要
为了解介质阻挡放电裂解航空煤油的潜力,提高裂解产物中氢气选择性,利用微秒脉冲电源激励平行板介质阻挡放电裂解器,在氩气环境中对单一航空煤油替代燃料正癸烷进行裂解实验。通过改变加载电压和放电频率,得到产物中不同组份体积分数变化,以及比能耗对氢气选择性的影响,并构建了等离子体裂解正癸烷的部分反应路径。结果表明:不同实验条件下,产物中乙烯体积分数最高,其次是氢气;产物中各组份体积分数均随加载电压和放电频率的增加而提高;比能耗对氢气选择性影响的主要因素是放电频率,并且放电频率越高,氢气选择性越强。
We experimentally researched the potential of pyrolyzing aviation kerosene by dielectric barrier discharge to increase the H2 selectivity of decomposed products. The decompition experiment of n-decane, the single alternative fuel for aviation kerosene, was carried out under the argon environment with parallel plate dielectric barrier discharge cracker excited by microsecond pulsed power. By changing on-load voltages and discharge frequencies, the concentrations of different components were acquired, the effect of specific input energy on H2 selectivity was analyzed, and part of the reaction paths of plasma decomposition of n-decane was identified. The results demonstrate that, under different conditions, ethylene and H2 have higher concentrations among all products; the concentrations of components increase with the rise of on-load voltage and discharge frequency; the specific input energy influences the H2 selectivity principally through discharge frequency, and furthermore, H2 selectivity will be stronger as discharge frequency increases.
We experimentally researched the potential of pyrolyzing aviation kerosene by dielectric barrier discharge to increase the H2 selectivity of decomposed products. The decompition experiment of n-decane, the single alternative fuel for aviation kerosene, was carried out under the argon environment with parallel plate dielectric barrier discharge cracker excited by microsecond pulsed power. By changing on-load voltages and discharge frequencies, the concentrations of different components were acquired, the effect of specific input energy on H2 selectivity was analyzed, and part of the reaction paths of plasma decomposition of n-decane was identified. The results demonstrate that, under different conditions, ethylene and H2 have higher concentrations among all products; the concentrations of components increase with the rise of on-load voltage and discharge frequency; the specific input energy influences the H2 selectivity principally through discharge frequency, and furthermore, H2 selectivity will be stronger as discharge frequency increases.
引文
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[2]贺武生.超燃冲压发动机研究综述[J].火箭推进,2005,31(1):29-32.HE Wusheng.Review of scramjet engine development[J].Journal of Rocket Propulsion,2005,31(1):29-32.
[3]袁春飞,仇小杰.超燃冲压发动机研究现状及控制系统关键技术[J].航空发动机,2016,42(4):1-7.YUAN Chunfei,QIU Xiaojie.Research status and key technologies of control system for scram jet[J].Aeroengine,2016,42(4):1-7.
[4]LI J,SONG W,HAN X,et al.Design and experiments of the fuel control method for the scramjet engine[J].Sadhana,2015,40(1):155-171.
[5]王玉清,李建梅,李立翰.亚燃冲压发动机在邻近空间飞行器上的应用思考[J].飞航导弹,2013(12):76-81.WANG Yuqing,LI Jianmei,LI Lihan.Application of subsonic ramjet in near space craft[J].Aerodynamic Missile Journal,2013(12):76-81.
[6]CHENG Y,HU E,LU X,et al.Experimental and kinetic study of pentene isomers and n-pentane in laminar flames[J].Proceedings of the Combustion Institute,2016.
[7]CHENG Y,HU E,DENG F,et al.Experimental and kinetic comparative study on ignition characteristics of 1-pentene and n-pentane[J].Fuel,2016,172:263-272.
[8]SHRESTHA U,SIMMS G,CHELLIAH H K.High-pressure fuel pyrolysis investigation using a microflow tube reactor[C]//53rd AIAAAerospace Sciences Meeting.[S.l.]:AIAA,2015:0418.
[9]ZENG M,YUAN W,WANG Y,et al.Experimental and kinetic modeling study of pyrolysis and oxidation of n-decane[J].Combustion and Flame,2014,161(7):1701-1715.
[10]LI X,SHEN B,XU C.Interaction of titanium and iron oxide with ZSM-5 to tune the catalytic cracking of hydrocarbons[J].Applied Catalysis A:General,2010,375(2):222-229.
[11]CHEEKATAMARLA P K,LANE A M.Catalytic auto thermal reforming of diesel fuel for hydrogen generation in fuel cells:II.catalyst poisoning and characterization studies[J].Journal of Power Sources,2006,154(1):223-231.
[12]李和平,于达仁,孙文廷,等.大气压放电等离子体研究进展综述[J].高电压技术,2016,42(12):3697-3727.LI Heping,YU Daren,SUN Wenting,et al.State-of-the-art of atmospheric discharge plasmas[J].High Voltage Engineering,2016,42(12):3697-3727.
[13]张凯,王瑞雪,韩伟,等.等离子体重油加工技术研究进展[J].电工技术学报,2016,31(24):1-5.ZHANG Kai,WANG Ruixue,HAN Wei,et al.Progress of heavy oil processing by plasma technology[J].Transactions of China Electrotechnical Society,2016,31(24):1-5.
[14]聂万胜,周思引,车学科.纳秒脉冲放电等离子体助燃技术研究进展[J].高电压技术,2017,43(6):1749-1758.NIE Wansheng,ZHOU Siyin,CHE Xueke.Review of plasma assisted combustion technology by nanosecond pulsed discharge[J].High Voltae Engineering,2017,43(6):1749-1758.
[15]邵涛,章程,王瑞雪,等.大气压脉冲气体放电与等离子体应用[J].高电压技术,2016,42(3):685-705.SHAO Tao,ZHANG Cheng,WANG Ruixue,et al.Atmospheric-pressure pulsed gas discharge and pulsed plasma application[J].High Voltage Engineering,2016,42(3):685-705.
[16]于红,凌伟,赵明,等.介质阻挡放电等离子体与重油反应的研究[J].核聚变与等离子体物理,2012,32(3):271-277.YU Hong,LING Wei,ZHAO Ming,et al.Reaction of dielectric barrier discharge plasma with crude oil[J].Nuclear Fusion and Plasma Physics,2012,32(3):271-277.
[17]TSOLAS N,TOGAI K,YETTER R.Flow reactor studies with nanosecond pulsed discharges at atmospheric pressure and higher[R].Wouter Dessein,Columbia:Pennsylvania State University Department of Mechanical and Nuclear Engineering,2013.
[18]YAO S,WENG S,JIN Q,et al.Mechanism of decane decomposition in a pulsed dielectric barrier discharge reactor[J].IEEE Transactions on Plasma Science,2016,44(11):2660-2666.
[19]ZHAO L,YANG T,KAISER R I,et al.Combined experimental and computational study on the unimolecular decomposition of JP-8 jet fuel surrogates.I.n-decane(n-C10H22)[J].The Journal of Physical Chemistry A,2017,121(6):1261-1280.
[20]DAVIDSON D F,OEHLSCHLAEGER M A,HANSON R K.Methyl concentration time-histories during iso-octane and n-heptane oxidation and pyrolysis[J].Proceedings of the Combustion Institute,2007,31(1):321-328.
[21]DAVIDSON D F,HONG Z,PILLA G L,et al.Multi-species time-history measurements during n-heptane oxidation behind reflected shock waves[J].Combustion and Flame,2010,157(10):1899-1905.
[22]LUO Y R.Comprehensive handbook of chemical bond energies[M].Boca Raton,USA:CRC press,2007.