Electric air cleaner composed of nonthermal plasma reactor and electrostatic precipitator
Electric air cleaner composed of nonthermal plasma reactor and electrostatic precipitator
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DOI：
10.1109/28.952528
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发表时间：
2001-09-01
影响因子：
4.4
通讯作者：
Fukumoto, H
中科院分区：
文献类型：
--
作者：
Okubo, M;Yamamoto, T;Fukumoto, H
最近对环境保护的关注鼓励使用紧凑型室内空气净化器，并且已经制造了各种类型的静电除尘器（ESP）。虽然使用正电晕的普通 ESP 可以有效地收集各种空气中的颗粒，但很难去除气态化合物，例如烟草烟雾，它会产生亚微米颗粒和难闻的气味。在本文中，我们研究了使用商业ESP和非热等离子体反应器收集亚微米颗粒和乙醛（CH3CHO）的分解，因为烟草烟雾的难闻气味主要是由乙醛分子引起的。对于 ESP，我们使用单分散气溶胶评估了与粒径相关的收集效率，因为在该领域进行的研究很少。对于乙醛的分解，在干燥空气下使用低温等离子体获得了90%以上的分解效率。然而，在潮湿条件下分解效率下降。尽管总体超收集效率超过99%，但对于0.6μm的颗粒尺寸实现了比0.3μm更高的收集效率。 ESP与低温等离子技术的结合，突破了传统室内电子空气净化器技术。
Recent concerns of environmental protection encourage the use of a compact indoor air cleaner and various types of electrostatic precipitators (ESPs) have been manufactured. Although a wide range of airborne particles can be collected effectively with an ordinary ESP using a positive de corona, it is difficult to remove gaseous compounds such as tobacco smoke which induces submicron particles and an offensive odor. In the present paper, we investigated the collection of submicron particles and the decomposition of acetaldehyde (CH3 CHO) using a commercial ESP and a nonthermal plasma reactor because the offensive odor of tobacco smoke is mainly caused by acetaldehyde molecules. For an ESP, we evaluated the particle-size dependent collection efficiency using monodispersed aerosol because little investigations have been conducted in this area. As for acetaldehyde decomposition, more than 90% of decomposition efficiency was obtained with the use of the nonthermal plasma under dry air. However, the decomposition efficiency was deteriorated under humidified condition. The higher collection efficiency was achieved for a particle size of 0.6 mum than that of 0.3 mum although the overall over collection efficiency exceeded more than 99%. The combination of ESP and nonthermal plasma technologies leads to the breakthrough of the conventional indoor electronic air cleaner technology.