Scale-up analysis and development of gliding arc discharge facility for volatile organic compounds decomposition.
Scale-up analysis and development of gliding arc discharge facility for volatile organic compounds decomposition.
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DOI：
10.1016/j.jhazmat.2007.11.105
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发表时间：
2008-07
影响因子：
13.6
通讯作者：
Zheng Bo;Jian-hua Yan;Xiaodong Li;Y. Chi;K. Cen
中科院分区：
文献类型：
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作者：
Zheng Bo;Jian-hua Yan;Xiaodong Li;Y. Chi;K. Cen
在室内实验和数值模拟的基础上，研究了传统滑翔弧（T-GA）装置进气流量和反应器构型对挥发性有机物（VOCs）分解效率的影响。为了保证分解效率，喷嘴直径与两电极最短距离的比值应保持在合适的数值范围内，这表明在固定电源电压条件下，单纯扩大喷嘴内径并不是提高T-GA处理能力的合适方法。提出了一种基于改进进气系统的滑动电弧气体放电（D-GA）反应器：小流量空气通过底部喷嘴进行滑动电弧气体放电，大流量污染气体通过等离子体区前缘进行分解。D-GA反应器在较高气体流速下对VOCs的分解效率和比能耗均优于T-GA反应器。D-GA电抗器也避免了多电极遗传算法系统功率系统量和电耗增加的缺点。
The influences of inlet gas flow rate and reactor configuration on volatile organic compounds (VOCs) decomposition efficiency in a traditional gliding arc (T-GA) facility are studied based on laboratory experiments and numerical simulation. The ratio of the nozzle diameter and the shortest distance of two electrodes should be maintained in a suitable value range to guarantee the decomposition efficiency, which indicates simply enlarging the nozzle inner diameter is not a proper way to raise the T-GA treatment capacity in a fixed supply voltage condition. A developed gliding arc gas discharge (D-GA) reactor based on a modified gas feed system is proposed: small flow rate air goes through the bottom nozzle to process the GA evolution, and high flow rate contaminated gas goes frontal through the plasma region and decomposes. The performances of D-GA reactor in the decomposition of VOCs with relative high gas flow rate, including decomposition efficiency and specific energy consumption, are better than T-GA reactor. D-GA reactor also avoids the drawbacks of the increases of power system amount and electric power consumption in multi-electrode GA system.