| 戴超,季聪,顾璠.化学通报,2017,80(6):568-572. |
| CO2气氛苯尖端放电等离子体转化试验研究 |
| Experimental Study on the Characteristics of Benzene Conversion with Tip Discharge Plasma under?CO2?Atmosphere |
| 投稿时间：2016-10-20 修订日期：2016-11-15 |
| DOI： |
| 中文关键词: 苯 二氧化碳 非平衡态等离子体 光谱诊断 |
| 英文关键词:benzene carbon dioxide non-thermal plasma spectroscopic diagnostics |
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| 中文摘要: |
| 本文研究了CO2为气化介质时，等离子体辅助煤气化过程中焦油组分苯发生的非热转化特性，建立了焦油组分苯、CO2单电极尖端放电非平衡态等离子体反应体系。通过煤气分析仪对转化反应的产物进行分析，并采用可见发射光谱技术对等离子体进行诊断。结果表明，在该反应体系中，苯转化生成的气态产物是CO与CO2的混合气，而H元素直接被氧化生成H20。能量密度对于苯转化反应起主导作用。在相同能量密度条件下，降低苯浓度也能够提高苯的转化率，但改变气速增加反应时间并不能提高苯的转化率。此外，通过光谱分析可得苯的非热转化可由CO2直接解离产生的O自由基触发。 |
| 英文摘要: |
| A kind of single-electrode tip discharge plasma reaction systems at atmospheric pressure was built for non - thermodynamic conversion of benzene, one of tar compounds in the CO2 plasma assisted gasification process. The gas analyzer was used to study the syngas production and emission spectrum was used to diagnose the plasma. The results show in this reaction system of the mainly gaseous product of benzene conversion is CO, and the H element is directly oxidized to H2O. The energy density plays a dominant role in the conversion of benzene and at the same energy density, the decrease of benzene concentration can also increase the conversion ratio of benzene, but increasing the reaction time cannot the conversion ratio of benzene. In addition, based on spectral analysis, the non-thermal conversion of benzene can be triggered by O-radicals generated by direct dissociation of CO2. |
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