Plasma cracking of n-decane is carried out in a new type of gliding arc flow reactor in the atmosphere of nitrogen and air, at a flow range of 25–45 L/min with an interval of 5 L/min. The relationship between arc evolution and discharge voltage and current signals is established by synchronous recording with high-speed camera and oscilloscope. It is recorded that the rotating frequency of the gliding arc is in the range of 81–176 Hz, which increases with the rise of the flow rate and has no direct relationship with the type of gas. When air is used as the discharge medium, although the luminous intensity of the arc is weak, arc rotation is relatively stable, and the specific input energy is higher, which is 58% higher than that of nitrogen. In addition, the partial oxidation of n-decane provides extra heat for cracking, which is helpful to improve the efficiency of plasma cracking. The cracking products mainly include hydrogen, ethylene, acetylene, methane, propylene and ethane. The concentration of each component is higher, reaching the maximum value at the flow rate of 40 L/min, with the hydrogen selectivity of 23.1%. However, when nitrogen plasma is selected, the kinds of products are reduced, containing only hydrogen, ethylene and acetylene, and the concentrations are lower than 0.5%. Two parameters, energy conversion efficiency and carbon based characterization effective cracking rate, were proposed to evaluate the cracking effect of flow reactor.

中文翻译：

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通过在空气和氮气中滑动电弧等离子体重整正癸烷

正癸烷的等离子裂解是在新型滑移弧流反应器中在氮气和空气气氛中进行，流量范围为25-45 L/min，间隔为5 L/min。通过高速摄像机和示波器同步记录建立电弧演变与放电电压和电流信号之间的关系。据记载，滑弧的旋转频率在81-176Hz范围内，随着流量的增加而增加，与气体类型没有直接关系。使用空气作为放电介质时，虽然电弧的发光强度较弱，但电弧旋转相对稳定，比输入能量更高，比氮气高58%。此外，正癸烷的部分氧化为裂解提供了额外的热量，有助于提高等离子裂解效率。裂解产物主要包括氢气、乙烯、乙炔、甲烷、丙烯和乙烷。各组分浓度较高，在流速为40 L/min时达到最大值，氢气选择性为23.1%。但选择氮等离子体时，产物种类减少，仅含氢、乙烯和乙炔，浓度低于0.5%。提出了能量转化效率和碳基表征有效裂解率两个参数来评价流动反应器的裂解效果。在流速为 40 L/min 时达到最大值，氢气选择性为 23.1%。但选择氮等离子体时，产物种类减少，仅含氢、乙烯和乙炔，浓度低于0.5%。提出了能量转化效率和碳基表征有效裂解率两个参数来评价流动反应器的裂解效果。在流速为 40 L/min 时达到最大值，氢气选择性为 23.1%。但选择氮等离子体时，产物种类减少，仅含氢、乙烯和乙炔，浓度低于0.5%。提出了能量转化效率和碳基表征有效裂解率两个参数来评价流动反应器的裂解效果。