Review of Packed-Bed Plasma Reactor for Ozone Generation and Air Pollution Control

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• 作者：Hsin Liang Chen ; How Ming Lee ; Shiaw Huei Chen ; Moo Been Chang
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2008
• 出版时间：April 2, 2008
• 年：2008
• 卷：47
• 期：7
• 页码：2122 - 2130
• 全文大小：161K
• 年卷期：v.47,no.7(April 2, 2008)
• ISSN：1520-5045

文摘

Packed-bed plasma reactors, constructed by packing noncatalytic dielectric pellets inside nonthermal plasmareactors, have been demonstrated to effectively alleviate the major bottleneck encountered by nonthermalplasma, i.e., the energy efficiency needs to be further improved. As far as the environmental issues areconcerned, packed-bed plasma reactors are mainly applied to ozone generation and gaseous pollutant removal.According to the available experimental data, for a given specific energy density, the energy efficiency forozone generation and gaseous pollutant abatement obtained with packed-bed reactors, if compared to that ofnonpacked reactors, could be 1.1-4.3 and 1.1-12 times higher, depending on the type of pollutant, thereactor geometry, and the packing pellets used. Nevertheless, it is worth noticing that the packing pelletssuitable for ozone generation and pollutant removal are quite different. The influences of material, dielectricconstant, size, and shape of the packing pellets on the performance for ozone generation and gaseous pollutantremoval are comprehensively reviewed in this paper and guidelines for pellet selection are provided as well.For the single-stage plasma catalysis system, in which catalyst pellets are directly packed inside the plasmareactor, the physical parameters of catalyst would also have significant influence on the plasma characteristicsand the performance. Therefore, the content of this review paper could provide useful information for single-stage plasma catalysis system from the viewpoint of plasma characteristics.