基于MnO<sub>x</sub>-CeO<sub>2</sub>/PPSN的低温SCR脱硝

刘清; 郑玉婴; 汪谢

基于MnO_x-CeO₂/PPSN的低温SCR脱硝

1.
福州大学化学化工学院, 福建福州 350108;
2.
福州大学材料科学与工程学院, 福建福州 350108

基金项目: 福建省科技创新平台建设计划项目(2010H2005); 尼龙6/Kevlar纤维复合材料及关键技术研发项目(JK2011004),福州市科技计划项目(2010-PT-123)。

详细信息

通讯作者:
郑玉婴(1959-), 女, 教授, 博士。主要从事复合材料的结构与性能研究, E-mail: yyzheng@fzu.edu.cn。

中图分类号: O643
计量
- 文章访问数: 1402
- HTML全文浏览量: 28
- PDF下载量: 824
- 被引次数: 0
出版历程
- 收稿日期: 2011-09-21
- 修回日期: 2011-11-29
- 刊出日期: 2012-04-30

Research on de-NO by low-temperature SCR based on MnO_x-CeO₂/PPSN

1.
College of Chemistry and Chemical Engineering, Fuzhou 350108, China;
2.
College of Materials Science and Engineering|Fuzhou University, Fuzhou 350108, China

摘要

摘要: 采用超声法,将经400℃煅烧、锰摩尔分数为40%的MnO_x-CeO₂负载到经硝酸处理后的聚苯硫醚(PPSN)滤料上,制备了MnO_x-CeO₂/PPSN滤料。以氨气为还原剂,测试了MnO_x-CeO₂/PPSN滤料低温SCR过程中的催化活性,同时研究了催化温度、NH₃体积分数、O₂体积分数、催化剂负载量等因素对其NO脱除效率的影响。研究发现,当MnO_x-CeO₂负载量为296g/m²时,在催化温度130~160℃、NH₃/NO略大于1、O₂体积分数约5%时,MnO_x-CeO₂/PPSN滤料具有较高的NO脱除效率。在催化温度、NH₃体积分数、O₂体积分数一定时,MnO_x-CeO₂/PPSN滤料的NO脱除效率随负载量的增大而增大。
- 低温选择性催化还原 /
- MnO_x-CeO₂ /
- PPS /
- NO脱除率
Abstract: Polyphenylene sulfide (PPS) filter was treated by nitric acid to form PPSN filter. By the ultrasonic method, PPSN filter was loaded on 40% manganese molar fraction of MnO_x-CeO₂ which was calcined at 400℃ to form MnO_x-CeO₂/PPSN. The activity of MnO_x-CeO₂/PPSN was tested in the presence of NH₃ as reducing agent for selective catalytic reduction of NO. The influences of catalyst temperature, volume fraction of NH₃ and O₂, and catalyst loadings on the de-NO efficiency were studied too. It was found that MnO_x-CeO₂/PPSN filter with the catalyst loadings of 296g/m²showed higher de-NO efficiency under the conditions of temperature 130~160℃, NH₃/NO>1, and O₂ 5%. When the catalyst temperature, the volume fraction of NH₃ and O₂ are constant, de-NO efficiency of MnO_x-CeO₂/PPSN is higher with the catalyst loading increasing.
- low-temperature selective catalytic reduction(SCR) /
- MnO_x-CeO₂ /
- PPS /
- de-NO efficiency

HTML全文

参考文献(11)

曲虹霞, 钟秦. NH₃选择性催化还原NO_x的实验研究[J]. 环境科学与工艺, 2004, 27(6): 19-21. (QU Hong-xia, ZHONG Qin. Investigation of selective catalytic reduction of NO_x with NH₃[J]. Environmental Science and Technology, 2004, 27(6): 19-21.)

沈伯雄, 郭宾彬,吴春飞, 梁才, 王成东, 史展亮. MnO_x/ACF低温选择性催化还原烟气中的NO[J]. 环境污染与防治, 2006, 28(11): 801-803. (SHEN Bo-xiong; GUO Bin-bin; WU Chun-fei; LIANG Cai; WANG Cheng-dong; SHI Zhan-liang. Low temperature selective catalytic reduction of NO by MnO_x/ACF[J]. Environmental Pollution & Control, 2006, 28(11): 801-803.)

沈伯雄, 郭宾彬, 史展亮, 吴春飞, 梁材. CeO₂/ACF的低温SCR烟气脱硝性能研究[J].燃料化学学报, 2007, 35(1): 125-128. (SHEN Bo-xiong; GUO Bin-bin; SHI Zhan-liang; WU Chun-fei; LIANG Cai. Low temperature SCR of NO in flue gas on CeO₂/ACF[J]. Journal of Fuel Chemistry and Technology, 2007, 35(1): 125-128.)

沈伯雄, 史展亮,施建伟, 杨婷婷,赵宁. 基于Mn-CeO_x/ACFN的低温SCR脱硝[J].化工进展, 2008, 27(1): 87-91. (SHEN Bo-xiong; SHI Zhan-liang; SHI Jian-wei; YANG Ting-ting; ZHAO Ning. Research on de-NO by low-temperature SCR based on Mn-CeO_x/ACFN[J]. Chemical Industry and Engineering Progress, 2008, 27(1): 87-91.)

JIANG Z, GYUROVA L A, SCHLARB A K, FRIDERICH K,ZHANG Z. Study on friction and wear behavior of polyphenylene sulfide composites reinforced by short carbon fibers and sub-micro TiO₂ particles[J]. Compos Sci Technol, 2008, 68(3/4): 734-742.

TANTHAPANICHAKOON W, HATAA M. Mechanical degradation of filter polymer materials: Polyphenylene sulfide[J]. Polym Degrad Stability, 2006, 91(11): 2614-2621.

MEI Z, CHUNG D D L. Effect of heating time below the melting temperature on polyphenylene sulfide adhesive joint development[J]. Int J Adhesion Adhesives, 2000, 20(4): 273-277.

QI G, YANG R T. Performance and kinetics study for low temperature SCR of NO with NH₃ over MnO_x-CeO₂ catalyst[J]. J Catal, 2003, 217(2): 434-441.

YOSHIKAWA M, YASUTAKE A , MOCHIDA I. Low temperature selective catalytic reduction of NO_x by metal oxides supported on active carbon fibers[J]. Appl Catal A, 1998, 173(2): 239-245.

KAPTEIJN F, SINGOREDJO L, ANDREINI A, MOULIJN J A. Activity and selectivity of pure manganese oxides in the selective catalytic reduction of nitric oxide with ammonia[J]. Appl Catal B, 1994, 3(2/3): 173-189.

孙熙.袋式除尘技术与应用[M]. 北京: 机械工业出版社, 2004. (SUN Xi. Bag filter technology and application[M]. Beijing: Machinery Industry Press, 2004.)

施引文献

资源附件(0)

访问统计