Destruction of toluene by rotating gliding arc discharge
Destruction of toluene by rotating gliding arc discharge
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旋转滑行电弧放电破坏甲苯
DOI：
10.1016/j.fuel.2016.02.065
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发表时间：
2016-06
期刊：
影响因子：
7.4
通讯作者：
Xin Tu
中科院分区：
文献类型：
--
作者：
Fengsen Zhu;Hao Zhang;Xin Yan;Jianhua Yan;Mingjiang Ni;Xiaodong Li;Xin Tu
非热等离子体被认为是一种替代的处理焦油存在于从气化过程的流出物。在这项研究中，一种新型的旋转滑动弧（RGA）放电反应器的焦油销毁。氮气流中的甲苯被用作焦油替代物。研究了不同输入气体浓度和总气体流量下RGA放电的物理特性及其在甲苯降解中的应用。结果表明，在甲苯浓度为10 g/Nm 3，总流量为0.24 Nm 3/h的条件下，最高降解效率可达95%以上。两种主要的气体产物是H2和C2 H2，最大选择性分别为39.35%和27.0%。较高的输入浓度略微降低了该销毁效率，但能量效率进一步提高，最高值为16.61 g甲苯消除/kW h。此外，在RGA反应器的下游收集液体和固体副产物，并进行定性和半定量测定。这些副产物的量和结构对于更好地理解等离子体处理对模型化合物和载气氮气的化学后果是有益的。
Non-thermal plasma is considered as an alternative treatment of tar present in the effluent from gasification processes. In this study, a novel rotating gliding arc (RGA) discharge reactor was developed for tar destruction. Toluene in nitrogen flow was used as a tar surrogate. The physical features of RGA discharge and its application to toluene destruction are investigated at different input concentrations and total gas flow rates. As a result, the highest destruction efficiency could exceed 95%, with a toluene concentration of 10 g/N m3and a total flow rate of 0.24 N m3/h. The two major gaseous products are H2and C2H2, with maximum selectivity of 39.35% and 27.0%, respectively. A higher input concentration slightly reduces this destruction efficiency but the energy efficiency further expanded, with a highest value of 16.61 g of toluene eliminated/kW h. In addition, the liquid and solid byproducts are collected downstream of the RGA reactor and determined qualitatively and semi-quantitatively. The amount and structure of these by-products is instructive for reaching a better comprehension of the chemical consequences of plasma treatment to the model compound and to the carrier gas nitrogen.
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