介质阻挡放电添加工业木屑对NO转化效率的研究  

Study on denitrification by dielectric barrier discharge filled industrial wood chips

作　　者：张宁 王瑶瑶 黄超[1] 贺晓杨 杨振民[1] ZHANG Ning;WANG Yaoyao;HUANG Chao;HE Xiaoyang;YANG Zhenmin(School of Energy and Environmental Engineering,Hebei University of Technology,Tianjin 300401,China;Tianjin Academy of Eco-environmental Sciences,Tianjin 300191,China)

机构地区：[1]河北工业大学能源与环境工程学院,天津300401 [2]天津市生态环境科学研究院,天津300191

出　　处：《河北工业大学学报》2023年第2期53-60,共8页Journal of Hebei University of Technology

基　　金：河北省基础研究计划(E2018202333);河北省创新能力提升计划(194537130)。

摘　　要：主要探究同轴圆筒式介质阻挡放电反应器的电源参数以及在其内部添加生物质对烟气中NO转化效率的影响。分析了电源参数以及不同种类生物质(工业木屑、农作物秸秆)的填充对NO转化效率的影响。结果表明:该系统最适脱除频率为9.1 kHz;各种生物质中NO转化效率最高的是工业木屑,其他3种生物质的脱除效率也都优于无填充。对不同种类生物质分别进行了酸碱改性处理,并进行了电镜扫描(SEM)分析,结果表明:工业木屑的最佳酸碱改性条件是1%的HCl溶液、4%的NaOH溶液,玉米秸秆的最佳酸碱改性条件是4%HCl溶液、2%NaOH溶液,水稻秸秆的最佳酸碱改性条件是3%HCl溶液、8%NaOH溶液,小麦秸秆的最佳酸碱改性条件是4%HCl溶液、2%NaOH溶液。Dielectric barrier discharge(DBD)is often used as a low temperature plasma technique for the removal of contaminants from flue gases.The effects of power parameters,DBD filled biomass(industrial wood chips,corn straw,rice straw and wheat straw)on NO removal efficiency were studied.The research shows that the optimal power frequency of the test system is 9.1 kHz;Industrial sawdust and three kinds of crop straw(corn straw,rice straw and wheat straw)are used as filling substances,and the removal efficiency of NO is order as industrial wood chips>corn straw>wheat straw>rice straw>no filling.Industrial wood chips and the three kinds of straw are also modified by acid and alkali to study the effect of NO removal efficiency and make the electron microscope scan.The results show that 6%NaOH solu⁃tion treated industrial wood chips,Corn straw treated with 2%NaOH solution,rice straw treated with 4%HCl solution and wheat straw treated with 3%HCl solution have the best removal effect of No.

关 键 词：介质阻挡放电(DBD) 生物质 酸碱改性 NO转化 脱除效率 

分 类 号：X701[环境科学与工程—环境工程]