摘要
浸渍法制备得到负载Fe_(2)O_(3)(Fe_(2)O_(3)/AC)良好的活性炭。通过微波脱硝实验,研究了脱硝温度、NO浓度、气体流速和填充量等工艺参数及SO_(2)浓度、O_(2)含量和H_(2)O(g)含量等烟气成分对Fe_(2)O_(3)/AC微波脱硝性能的影响特征。结果表明,随着脱硝温度升高,脱硝率和吸附量均提高;随着NO浓度和气体流速增加,脱硝率降低,吸附量增加;随着填充量增加,脱硝率增加,吸附量降低;SO_(2)抑制Fe_(2)O_(3)/AC对NO的吸附,表面元素变化表明SO_(2)会与Fe_(2)O_(3)反应产生硫酸盐,使得脱硝性能降低;O_(2)促进Fe_(2)O_(3)/AC脱硝,且O_(2)能维持Fe_(2)O_(3)/AC持续脱硝能力;低含量H_(2)O(g)促进Fe_(2)O_(3)/AC脱硝,但H_(2)O(g)含量高至15%时,则对脱硝不利。
Activated carbon loaded with Fe_(2)O_(3)(Fe_(2)O_(3)/AC)was prepared by impregnation method.Through microwave denitration experiments,the effects of process parameters such as denitration temperature,NO concentration,gas flow rate and filling amount,and flue gas components such as SO_(2)concentration,O_(2)content and H_(2)O(g)content on the microwave denitration performance of Fe_(2)O_(3)/AC were studied.The results show that the denitrification rate and adsorption capacity increase with the increase of denitrification temperature.With the increase of NO concentration and gas flow rate,the denitrification rate decreases and the adsorption capacity increases.As the filling amount increases,the denitrification rate increases,while the adsorption amount decreases.SO_(2)inhibits the adsorption of NO by Fe_(2)O_(3)/AC.The change of surface elements indicates that SO_(2)reacts with Fe_(2)O_(3)to produce sulfate,which reduces the denitration performance.O_(2)promotes the denitrification of Fe_(2)O_(3)/AC,and O_(2)can maintain the continuous denitrification capacity of Fe_(2)O_(3)/AC.The low content of H_(2)O(g)promotes the denitrification of Fe_(2)O_(3)/AC,but when the content of H_(2)O(g)is as high as 15%,it is unfavorable for denitrification.
作者
杨雪松
石焱
胡长庆
杨广庆
王健雄
Yang Xuesong;Shi Yan;Hu Changqing;Yang Guangqing;Wang Jianxiong(North China University of Science and Technology)
出处
《冶金能源》
北大核心
2025年第4期74-80,共7页
Energy For Metallurgical Industry
基金
国家自然科学基金资助项目(52174312)
河北省自然科学基金——高端钢铁冶金联合基金资助项目(E2021209151)。
