Destruction of ozone-depleting substances in a thermal plasma
Destruction of ozone-depleting substances in a thermal plasma
复制标题
在热等离子体中破坏臭氧消耗物质
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
T. McAllister
中科院分区：
文献类型：
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作者：
A. Murphy;T. McAllister
PLASCON™ 等离子体反应器的二维数值模型用于研究反应器中臭氧消耗物质的破坏情况。该模型包括电磁、流体动力学和化学动力学现象。针对 CFC-12 (CF2Cl2) 破坏的情况，给出了等离子炬、喷射歧管和反应管内的计算温度、流量和物质浓度场。研究发现，CFC-12 向 CFC-13 (CF3Cl)（一种更稳定的臭氧消耗物质）的转化发生在靠近注入歧管的区域，并且不受反应管几何形状的影响。 CFC-13 预计将成为废气中主要的臭氧消耗物质。发现模型的预测与废气成分的测量结果非常一致。
A two-dimensional numerical model of the PLASCON™ plasma reactor is used to investigate the destruction of ozone-depleting substances in the reactor. The model includes electromagnetic, fluid dynamic and chemical kinetic phenomena. Calculated temperature, flow and species concentration fields within the plasma torch, the injection manifold and the reaction tube are presented for the case of the destruction of CFC-12 (CF2Cl2). Conversion of CFC-12 to CFC-13 (CF3Cl), a more stable ozone-depleting substance, is found to occur in the region close to the injection manifold, and to be unaffected by reaction tube geometry. CFC-13 is predicted to be the dominant ozone-depleting substance in the exhaust gas. The predictions of the model are found to be in good agreement with measurements of the exhaust gas composition.