低温等离子体净化室内VOCs及其应用.pdf

I 摘要随着科学技术的飞速发展, 化学品生产规模和品种的扩大极为迅速, 在人类生活中占据了重要的地位少数化学品给生态环境和人体健康带来严重危害, 特别是挥发性有机化合物(pounds)所引起的污染对于挥发性化合物现有的控制技术尚不完善脉冲放电等离子体法被认为是一种很有前途的治理有害废气的新技术在本文中主要讨论了脉冲电晕放电低温等离子体处理挥发性有机化合物VOCs的应用研究在本文中首先对室内挥发性有机化合物VOCs进行了简单介绍从它的概念存在状态种类对人体的危害控制方法等方面做了介绍对现有的几种处理 VOCs的方式做了介绍并提出了低温等离子处理VOCs是一种新型的非常有前途的技术其次分析了低温等离子体的基本理论它的产生方式各种方式产生低温等离子体的优缺点及应用并着重对电晕放电低温等离子体的基本理论进行了分析为后面利用脉冲电晕等离子体处理挥发性有机化合物VOCs提供理论基础根据电晕放电等离子体的基本理论得出了等离子体处理VOCs的机制在放电产生的活性粒子如高能电子臭氧自由基等的作用下发生一系列的物理化学反应使有害的VOCs 转化成无害的物质其可能的途经是首先高能电子经过与目标分子发生非弹性碰撞将能量全部或部分传递给分子使其裂解激化等接着上述被高能电子裂解激化的分子在臭氧和氧等离子的作用下被氧化成CO 2 CO和H 2O 随后分析了影响VOCs去除率的各种因素为脉冲电晕等离子体发生器的设计提供了重要的参考依据并对反应器的各项参数进行了设计计算最后对反应器的可行性进行了经济性分析得出了将脉冲电晕等离子发生器用于空调系统中所耗资关键词低温等离子体 VOCs 电晕放电去除率 II Abstract Now, with development of technology, the throughput and breed of chemical enlarge rapidly .it holds important station in people’s living. Fewness chemicals bring serious harm to environment and people’s health, especially pollutions are induced by VOCs. The current technologies for controlling VOCs have associated with some problems. Pulse corona induced plasma discharge process (PCPP) is regarded as a promising technology to control these Pollutants. In this dissertation, the applied research position VOCs by pulse corona discharge plasma is discussed primarily. In this paper, firstly, introduce simply VOCs in its conception, existent estate, kind harm and control indoor, describe several modes posing VOCs now. Subsequently bring forward that non-thermal plasma pose VOCs is a late-model promising technology. Secondly, it analyse basic theory of non-thermal plasma in its form and non-thermal plasma merit and demerit as well as its application e into being by different modes. In this chapter it analyse importantly basic theory of theory of non-thermal plasma, it provides academic base for position VOCs by pulse corona discharge plasma. On elementary theory of non-thermal plasma, the mechanism of VOCs destruction was decided: under the action of activated particles (