| 脉冲放电等离子体治理甲苯废气放大试验研究 |
| 摘要点击 1480 全文点击 1774 投稿时间：2003-05-21 修订日期：2003-08-17 |
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| 中文关键词 高压脉冲电源 放电等离子体 放大试验 甲苯 能量利用率 能量密度 |
| 英文关键词 high voltage source discharge plasma scale-up experiments toluene energy yield energy density |
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| 中文摘要 |
| 应用脉冲放电等离子体技术,在线板式反应器内对低浓度甲苯废气的治理进行放大试验.采用闸流管开关脉冲电源,其最大输出功率1kW,最大脉冲电压峰值100kV. 试验规模4～16m3·h-1. 试验考察了峰值电压、重复频率、进口浓度和处理气量对甲苯去除率的影响.结果表明:峰值电场强度在9～12kV·cm-1范围内增加,甲苯去除率相应明显提高;当处理气量为4 m3·h-1、脉冲电压峰值69kV、进口浓度1 180mg·m-3、重复频率300pps时, 甲苯的去除率可达88%;反应器的能量利用率在16g·(kW·h)-1左右;甲苯的降解产物主要是CO2和H2O,还有少量CO. 结合甲苯去除率与能量密度、甲苯进口浓度的关系,建立反应器动力学模型,获得甲苯的反应速率常数为0.00356 L·J-1. 为进一步优化放大反应器设计及与电源匹配提供了基础数据. |
| 英文摘要 |
| The scale-up experiments of the decomposition of toluene by pulse corona discharge in wire-plate reactor were investigated. The maximum output power of pulse voltage source was 1kW, and the maximal peak voltage was 100kV. The experiments were conducted with a gas-flow rate of 4～16 m3·h-1. Different parameters which influenced on removal efficiency were investigated, such as peak voltage, pulse frequency, inlet concentration of toluene, gas-flow rate. The results showed that the removal efficiency was improved obviously when the peak field intensity was changed in the range of 9～12 kV·cm-11; the removal efficiency 88% was obtained when gas-flow rate, peak voltage, inlet concentration of toluene, pulse frequency were 4 m3·h-1, 69kV, 1180 mg·m-3, 300pps respectively. The energy yield of toluene was about 16g·(kW·h)-1; the main products of decomposition were CO2 and H2O, few of CO. Combining the removal efficiency of toluene with energy density and inlet concentration of toluene, a reaction kinetic mathematic model was developed. By this model, the decomposition rate constant of toluene was 0.00356 L·J -1. According to the results, the optimization design for the reactor and the matching of pulse voltage source were reckoned. |
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