Analyses of Pulse Duration Influence on the NOx Removal by a Pulsed Corona Discharge with Luminescence Measurement
Analyses of Pulse Duration Influence on the NOx Removal by a Pulsed Corona Discharge with Luminescence Measurement
复制标题
发光测量分析脉冲持续时间对脉冲电晕放电脱硝的影响
DOI：
10.1541/ieejfms1990.120.2_167
复制
发表时间：
1999
影响因子：
--
通讯作者：
M. Ishida
中科院分区：
文献类型：
--
作者：
M. Kosuge;M. Fujiwara;M. Ishida
在针-板电极放电反应器中施加可变脉冲宽度的脉冲高压，测定了其在N2/NO混合气体中的脱硝性能。此外，还测量了N2第二正带（SPB）的放电发光强度的时间和空间分布。分析了脉冲宽度和外加电压对N2 SPB脱硝性能与发光强度的影响。分析表明：（1）在超过200 ns的时间内，NOx的去除效率下降，这是因为200 ns后注入的能量不能有效地用于产生N自由基。(2)在16 ~ 22 kV电压范围内，随着电压的升高，NOx的去除率降低。(3)N2 SPB的发光量与N2/NO中的NOx去除率具有线性关系。根据该关系，可以估计NOx去除反应的时间和空间分布。作为这种估计的应用之一，分析了缩短脉冲持续时间的影响。
Pulsed high voltage with variable pulse duration was applied to a discharge reactor with a needle-plane lectrodes, and the NOx removal performance in N2/NO was measured. Moreover the discharge luminous intensity of N2 2nd positive band (SPB) was measured as temporal and spatial distribution. The relationship between NOx removal performance and the luminous intensity of N2 SPB were analyzed with regard to pulse duration and applied voltage. The analyses show the following: (1) The NOx removal efficiency decreases in longer duration than 200ns because the energy injected after 200ns is not effectively used for N radical production. (2) The NOx removal efficiency decreases with increase of applied voltage from 16kV to 22kV. (3) The luminous quantity of N2 SPB has a linear relationship with NOx removal in N2/NO. From this relationship, the temporal and spatial distribution of the NOx removal reaction can be estimated. For one of the application of this estimation, the effect of shortened pulse duration was analyzed.