Application of a microwave helium plasma torch operating at atmospheric pressure to destroy trichloroethylene

被引：13

作者：

Rubio, S. J. ^{[1
]}

Rodero, A. ^{[1
]}

Quintero, M. C. ^{[1
]}

机构：

[1] Univ Cordoba, Dept Phys, E-14071 Cordoba, Spain

来源：

PLASMA CHEMISTRY AND PLASMA PROCESSING | 2008年 / 28卷 / 04期

关键词：

microwave plasma; voc removal; atmospheric pressure; plasma;

D O I：

10.1007/s11090-008-9133-3

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

We examined the influence of the gas flow-rate, microwave power and trichloroethylene concentration on the destruction of trichloroethylene with a system based on a microwave helium plasma operating at atmospheric pressure. Based on the experimental results obtained, the proposed system allows input concentrations of C2HCl3 in the ppmv range to be reduced to output concentrations in the ppbv range (i.e. virtually quantitative destruction) by using a microwave plasma power below 1000 W. High helium flow-rates and C2HCl3 concentrations allow energy efficiency values above 600 g/kW h to be obtained. Analyses of the output gases by gas chromatography and species present in the plasma by optical emission spectroscopy confirmed the negligible presence of halogen compounds resulting from the destruction of C2HCl3, and that of CCl4 and C2Cl4 as the sole chlorine species exceeding levels of 30 ppbv. Gaseous by-products consisted mainly of CO2, NO and N2O in addition to Cl-2 traces.

引用

页码：415 / 428

页数：14

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