制作以改性DSA为阳极、钛网为阴极并在两极间填充活性炭纤维棉作为传导介质的电解催化装置;将装置放置在喷淋洗涤反应器内,研究模拟烟气中NO_<i>x电催化还原脱除的影响因素。结果表明,随着电流密度从150 mA/cm²增大到350 mA/cm²,脱硝率逐渐升高,而阴极电流效率则是先增大后减小;随着烟气入口处NO浓度从600 mg/m³增大到1 400 mg/m³,脱硝率和阴极电流效率均逐渐增大;随着液气比从10 L/m³减小到2.5 L/m³,脱硝率逐渐减小而阴极电流效率逐渐增大。

An electrolytic catalytic device is prepared with modified DSA as the anode,titanium mesh as the cathode,and activated carbon fiber as the conduction medium between the two electrodes.The device is placed in a spray scrubber reactor to study the factors influencing the electrocatalytic reduction removal of NO_<i>x from simulated flue gas.The results show that the denitrification rate increases gradually as the current density increases from 150 mA·cm^-2 to 350 mA·cm^-2,while the cathode current efficiency increases firstly and decreases then.The denitrification rate and cathode current efficiency both increase gradually as the NO concentration at the flue gas inlet increases from 600 mg·m^-3 to 1,400 mg·m^-3.The denitrification rate decreases gradually while the cathode current efficiency increases gradually as the ratio of liquid to gas decreases from 10 L·m^-3 to 2.5 L·m^-3.

魏宝震(1995-),男,硕士生,研究方向为船舶尾气污染控制处理,weibaozhen@stu.ouc.edu.cn