摘要
本文采用脉冲前沿７０ｎｓ，脉冲宽度６００ｎｓ的短脉冲高压，通过线－筒式电极系统产生的等离子体，消除烟气中ＮＯ，目的是解决环境保护中的酸雨问题。通过实验给出ＮＯ的消除率与脉冲电压极性、脉冲频率及气体温度、停留时间、初始浓度的关系。浓度为２００×１０－６的含ＮＯ混合气体通过电极系统。在常温２０℃、脉冲频率为５０Ｈｚ、停留时间１０ｓ、脉冲峰值为６０ｋＶ时，ＮＯ的消除率几乎可达到１００％。
A short pulse high voltage with a rising time of 70 ns and a width of 600 ns was employed topass through a string-pail type corona system to produce plasma. The plasma was used to removenitrogen moncoxide(NO)in smoke,in order to solve the problem of sour rain. Experimental results haverevealed tbe dependence of the removal rate of NO on the polarity of the short pulse voltage,frequency ofpulse and gas temperature,retention period,and the initial concentration. A mixed gas containing NO witha concentration of 200×10-6 passed through the corona system at 293K,the removal rate of NO almostreacbed 100%,when the pulse frequency was 50Hz,retention period was 10s,and the peak value of thepulse voltage was 60 kV.
