煤基炭负载单金属催化剂在微波条件下脱硝性能的研究  

Study on Denitration Performance of Coal-based Carbon Supported Single Metal Catalyst Under Microwave Condition

作　　者：陈哲 CHEN Zhe(School of Chemistry and Chemical Engineering,Wuhan University of Science and Technology Wuhan 430081)

机构地区：[1]武汉科技大学化学与化工学院,武汉430081

出　　处：《工业安全与环保》2018年第10期61-65,共5页Industrial Safety and Environmental Protection

摘　　要：以褐煤低温热解生产的兰炭为载体,用Na、Ni、Cu、Mn共4种不同的金属硝酸盐为前驱体,采用高效且操作简单的共浸渍法制备出4种负载型催化剂。再使用混合气体模拟烟气,让4种负载型催化剂在微波条件下反应,比较不同负载型催化剂在相同条件下的脱硝完成情况,找出最佳的脱硝催化剂。结果表明,C-4煤基炭在烟气中的脱硝吸附能力最强;在气体总流量为1 400 m L/min,NO浓度为400ppm,O_2含量为5%时,负载1%Na和负载7%Ni单金属脱硝性能较强,分别高达88%和89%。通过元素分析、比表面积与孔径分析和SEM分析,表明Na和Ni金属的加入不仅保持了煤基炭的孔径结构,同时增加了表面活性位点,使之与氮氧化物反应更迅速。Four kinds of supported catalysts were prepared by the method of coimpregnation with Na,Ni,Cu and Mn as precursors,using the blue carbon produced by lignite pyrolysis at low temperature as the carrier.By simulating flue gas with mixed gas,four kinds of supported catalysts were reacted under microwave condition,and the denitration of different supported catalysts under the same condition was compared to find the best denitration catalyst.The results show that,the denitration adsorption capacity of C-4 coal based carbon in flue gas is the strongest.When the total gas flow rate was 1 400 mL/min,NO concentration was 400ppm and O 2 content was 5%,the denitration performance of 1%Na and 7%Ni single metal was relatively strong,up to 88%and 89%respectively.Through elemental analysis,specific surface area and pore size analysis and SEM analysis,it was shown that the addition of Na and Ni metals not only maintained the pore size structure of coal-based carbon,but also increased the surface active site,making it react faster with nitrogen oxides.

关 键 词：煤基炭 微波 脱硝 金属离子 

分 类 号：X701[环境科学与工程—环境工程]