| 循环的存储-放电等离子体催化新过程脱除室内空气中甲苯 |
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| 引用本文： | 范红玉,李小松,刘艳霞,刘景林,赵德志,朱爱民. 循环的存储-放电等离子体催化新过程脱除室内空气中甲苯[J]. 化工学报, 2011, 62(7): 1922-1926. DOI: 10.3969/j.issn.0438-1157.2011.07.020 |
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| 作者姓名： | 范红玉 李小松 刘艳霞 刘景林 赵德志 朱爱民 |
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| 作者单位： | 大连理工大学等离子体物理化学实验室 |
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| 基金项目： | 国家自然科学基金项目，国家高技术研究发展计划项目，辽宁省高校创新团队项目 |
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| 摘 要： | 引言室内空气中的挥发性有机化合物(VOCs),如甲醛(HCHO)、苯(C<,6>H<,6>)、甲苯(C<,7>H<,8>)等,是一类对人体有极大危害的室内空气污染物[1-2].传统的脱除VOCs的方法有吸附法、催化氧化法、热焚烧法等,这些方法在经济上或处理效率上或多或少存在缺陷.用于室内空气中VOCs脱除的理想方法应该同时具备脱除效率高、室温脱除、操作简单、能耗低及无二次污染物等特点.
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| 关 键 词： | 等离子体催化 甲苯 室内空气 存储-放电 |
Cycled storage-discharge plasma catalytic process for toluene removal from indoor air |
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| FAN Hongyu,LI Xiaosong,LIU Yanxia,LIU Jinglin,ZHAO Dezhi,ZHU Aimin. Cycled storage-discharge plasma catalytic process for toluene removal from indoor air[J]. Journal of Chemical Industry and Engineering(China), 2011, 62(7): 1922-1926. DOI: 10.3969/j.issn.0438-1157.2011.07.020 |
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| Authors: | FAN Hongyu LI Xiaosong LIU Yanxia LIU Jinglin ZHAO Dezhi ZHU Aimin |
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| Abstract: | Non-thermal plasmas(NTPs)technique has a great potential for indoor air purification, however, the high energy cost and secondary pollutants formation limit its practical application. To resolve these problems, a cycled storage-discharge(CSD)plasma catalytic process was explored for the removal of low-concentration toluene from indoor air in this study. The performance of toluene storage and plasma catalytic oxidation of adsorbed-state toluene over non-loaded and silver-loaded HZSM-5 catalysts was investigated. The experimental results showed that silver-loaded HZSM-5 catalysts gave a longer breakthrough time than non-loaded HZSM-5 catalysts at the storage stage(storage condition: 0.1 g·m-3 C7H8, 40% relative humidity(RH, 25℃), 2000 ml·min-1 flow rate of simulated air).With input power of 40 W, the adsorbed-state toluene could be almost oxidized to CO2 in 10 min at the discharge stage(carbon balance about 100%, CO2 selectivity 98.2%).It was further proved that there was no toluene desorbed during the process of plasma catalytic oxidation by on-line detection with mass spectrometry(MS)and Fourier transform infrared spectrometry(FTIR).Preliminary investigation on the stability of the CSD process for toluene removal was conducted. This study provides a novel plasma catalytic process for removing toluene from indoor air. |
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