电弧炉电弧放电时氮氧化物的产生及其控制的分析探讨

Analysis and Discussion on the Production and Control of Nitrogen Oxides during Arc Discharge in Electric Arc Furnace

分析了电弧炉电弧放电的工作原理,详细阐述了电弧炉放电产生氮氧化物的过程及反应机理,并通过减少放电间距、增加电弧柱内气体流量和湿度、增大电弧炉的体积、将气流方向平行于电极和电弧炉工业烟气(废气)通入亚硫酸盐液曝气几个方面进行了分析、探讨,检测数据表明,通过以上方法可有效控制NO_x的排放浓度在国家允许范围内。

The working principle of arc discharge in electric arc furnace is analyzed, and the process and reaction mechanism of nitric oxide produced by arc furnace discharge are described in detail. By reducing the spacing of discharge, increasing the flow rate and humidity of gas in arc column, increasing the volume of electric arc furnace, and aerating industrial flue gas (waste gas) parallel to the electrode and arc furnace into sulfite liquid, the analysis is made. The test data show that the above method can effectively control the emission concentration of NOx within the national allowable range.