低温等离子体技术去除作业环境中苯系物气体的研究进展

Updated information on application of non-thermal plasma in degradation of gaseous benzene serials in working environment

低温等离子体化学净化能够有效地降解有机物分子,在环境保护等领域得到了充分应用。在随后的研究中发现低温等离子体技术具有化学活性高、反应速度快的特点,在去除气态苯系物方面,与传统方法相比具有投资运行费用低、工艺方法简单等优点。低温等离子体化学净化是利用高能电子与气体分子(或原子)发生非弹性碰撞,将能量转换成基态分子(或原子)的内能,发生激发、离解、电离等一系列过程使苯系物分子分解。影响低温等离子体对苯系物气体的降解因素有:催化剂、能量密度、载气气体、气体流速、气体湿度、紫外线等。为了进一步阐明低温等离子体化学净化技术对工作场所空气环境治理的原理,现对近年来低温等离子体技术去除作业环境中苯系物气体的研究进展作一综述。

Non-thermal plasma is abundantly applied in the field of environment protection domain for degradation of volatile organic compounds. The Subsequent studies show that non-thermal plasma is of many advantages such as high chemical activity,high reaction velocity,low working cost,and simple technology method compared with the traditional degradation method. The theory of non-thermal plasma degradation is that high energy electrons generate non-elastic collisions with pollution air molecules（atoms）,and change non-thermal plasma energy into molecules（atoms） energy. Therefore,benzene serials molecules are decomposed through motivation,separation and ionization procession. There are many factors influencing degradation of benzene serials molecules such as catalyzator,energy density,carrier gas,gas flow velocity,gas humidity,ultraviolet radiation et al. This paper reviews briefly the updated studies on degradation of gaseous benzene serials using non-thermal plasma technology.