CuO/SC低温催化氧化脱除烟气中的NO

王亮; 高健; 李春虎; 冯丽娟; 杨俊杰

CuO/SC低温催化氧化脱除烟气中的NO

1.
中国海洋大学化学化工学院, 山东青岛 266100;
2.
中国海洋大学环境科学与工程学院, 山东青岛 266100;
3.
青岛双瑞海洋环境工程股份有限公司, 山东青岛 266101

基金项目: 青岛市科技发展计划(13-1-4-191-jch); 山东省博士后创新基金(201203105).

详细信息

通讯作者:
王亮(1981-), 男, 博士, 讲师, 主要从事石油天然气地质综合研究及油气勘探管理工作 E-mail: wangliang_good@163.com

中图分类号: X511
计量
- 文章访问数: 569
- HTML全文浏览量: 33
- PDF下载量: 568
- 被引次数: 0
出版历程
- 收稿日期: 2014-06-20
- 修回日期: 2014-07-21
- 刊出日期: 2014-11-30

Catalytic oxidation and removal of NO in flue gas at low temperature by CuO/SC

1.
College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China;
2.
College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China;
3.
Sunrui Marine Environment Engineering Co, Ltd, Qingdao 266101, China

摘要

摘要: 以活性半焦为载体,采用等体积浸渍硝酸铜溶液制备CuO/SC催化剂低温脱除模拟烟气中的NO_x, 利用BET、XRD和SEM等方法对CuO/SC催化剂进行了表征,采用固定床反应器测定了CuO/SC催化剂的脱硝活性,考察了CuO负载量、反应温度、空速、O₂浓度和H₂O浓度对CuO/SC脱硝率的影响.结果表明,当CuO/SC催化剂的载铜量为1%、温度70 ℃、空速1 000 h^-1、O₂浓度5%时,脱硝效果最好;并且分析了水蒸气对催化剂脱硝性能的毒化作用,当水蒸气存在时,穿透时间由15 h缩短为9.5 h.
- CuO/SC催化剂 /
- 烟气 /
- 催化氧化 /
- 脱硝
Abstract: CuO/SC catalysts were prepared by incipient wetness impregnation and characterized by BET, XRD and SEM. Their performance for NO oxidation was tested in a fixed bed reactor. The influence of CuO content, reaction temperature, space velocity, concentration of O₂ and H₂O on NO catalytic oxidation activity were investigated. The results show that CuO/SC with 1% CuO loading had the highest activity at 70 ℃, 5% of O₂ and 1 000 h^-1 of GHSV. In addition, the poisonous effect of water vapor on catalytic oxidation activity was also analyzed. When water vapor was introduced into the feed gas, breakthrough time is reduced from 15 h to 9.5 h.
- CuO/SC catalyst /
- flue gas /
- catalytic oxidation /
- NO removal

HTML全文

参考文献(22)

SUN W Y, DING S L, ZENG S S, SU S J, JIANG W J. Simultaneous absorption of NO_x and SO₂ from flue gas with pyrolusite slurry combined with gas-phase oxidation of NO using ozone[J]. J Hazard Mater, 2011, 192(1): 124-130.

XIE Y, CHEN Y, MA Y G, JIN Z L. Investigation of simultaneous adsorption of SO₂ and NO on [WTBZ]γ[WTB1]-alumina at low temperature using DRIFTS[J]. J Hazard Mater, 2011, 195(15): 223-229.

LIU Q Y, LIU Z Y. Carbon supported vanadia for multi-pollutants removal from flue gas[J]. Fuel, 2013, 108(10): 149-158.

SHIRAHAMA N, MOON S H, CHOI K H, ENJOJI T, KAWANO S, KORAI Y, TANOURA M, MOCHID A I. Mechanistic study on adsorption and reduction of NO over activated carbon fibers[J]. Carbon, 2002, 40(14): 2605-2611.

YANG J, MESTL G, HEREIN D, SCHLOGL R, FIND J. Reaction of NO with carbonaceous materials: 1. Reaction and adsorption of NO on ash-less carbon black[J]. Carbon, 2000, 38: 715-727.

刘清雅, 刘振宇, 李成岳. NH₃在选择性催化还原NO过程中的吸附与活化[J]. 催化学报, 2006, 27(7): 636-646.(LIU Qing-ya, LIU Zhen-yu, LI Cheng-yue. Adsorption and activation of NH₃ during selective catalytic reduction of NO by NH₃[J]. Chinese Journal of Catalysis, 2006, 27(7): 636-646.)

ZHANG J F, HUANG Y, CHEN X. Selective catalytic oxidation of NO over iron and manganese oxides supported on mesoporous silica[J]. J Nat Gas Chem, 2008, 17(3): 273-277.

MOCHID I, KAEABUCHI Y, KAWANO S, MATSUMURA Y, YOSHIKAWA M. High catalytic activity of pitchbased activated carbon fibres of moderate surface area for oxidation of NO to NO₂ at room temperature[J]. Fuel, 1997, 76(6): 543-548.

GUO Z C, XIE Y S, HONG I, KIM J. Catalytic oxidation of NO to NO₂ on activated carbon[J].Energy Convers Manage, 2001, 42(2): 2005-2018.

SUDHAKAR A, VIVEKANAND G, NISHITH V. Catalytic oxidation of NO by activated carbon fiber (ACF)[J]. Chem Eng J, 2006, 116(1): 25-37.

XUE E, SESHAN K, ROSS J R H. Roles of supports Pt loading and Pt dispersion in the oxidation of NO to NO₂and of SO₂ to SO₃[J]. Appl Catal B: Environ, 1996, 11(1): 65-79.

SCHMITZ P J, AUDL R J, DREWS A R, CHEN A E, LOWE-MA C K, MCABEC R W, SCHNEIDER W F, GORALSKI JR C T. NO oxidation over supported Pt: Impact of precursor, support, loading, and processing conditions evaluated via high through experimentation[J]. Appl Catal B: Environ, 2006, 67(3/4): 246-256.

WU Z B, SHENG Z Y, LIU Y, WANG H Q, TANG N, WANG J. Characterization and activity of Pd-modified TiO₂ catalysts for photo-catalytic oxidation of NO in gas phase[J]. J Hazard Mater, 2009, 164: 542-548.

童志权, 莫建红. 催化氧化法去除烟气中NO_x的研究进展[J]. 化工环保, 2007, 27(3): 193-199.(DONG Zhi-quan, MO Jian-hong. Advances in removal of NOx in flue gas by catalytic oxidation process[J]. Environmwntal Protection of Chemical Industry, 2007, 27(3): 193-199.)

WANG W T, LI C H, YAN Z F. Study on molding semi-coke used for flue-gas desulphurization[J]. Catal Today, 2010, 158: 235-240.

高健, 李春虎, 卞俊杰. 活性半焦低温催化氧化NO的研究[J]. 中国海洋大学学报(自然科学版), 2011, 41(3): 61-68.(GAO Jian, LI Chun-hu, BIAN Jun-jie. Catalytic oxidation of NO by activated semi-coke at low temperature[J]. Periodical of Ocean University of China, 2011, 41(3): 61-68.)

刘清雅, 刘振宇. 蜂窝状堇青石基CuO/Al₂O₃催化剂用于烟气同时脱硫脱硝的研究[J]. 燃料化学学报, 2004, 32(3): 257-262.(LIU Qing-ya, LIU Zhen-yu. Honeycomb cordierite based CuO/Al₂O₃ catalyst for simultaneous SO₂ and NO removal from flue gas[J]. Journal of Fuel Chemistry and Technology, 2004, 32(3): 257-262.)

刘守军, 刘振宇, 朱珍平, 牛宏贤. CuO/AC 低温脱除烟气中SO_x和NO_x的研究[J]. 燃料化学学报, 1999, 27(s): 192-198.(LIU Shou-jun, LIU Zhen-yu, ZHU Zhen-ping, NIU Hong-xian. Novel CuO/AC sorbent-catalyst for removal of SO₂ and NO from flue gas at low temperature[J]. Journal of Fuel Chemistry and Technology, 1999, 27(s): 192-198.)

AVINASH R S, JOANN S L. Kinetics of the selective catalytic reduction of NO with NH₃ over CuO/Y-A1₂O₃[J]. Ind Eng Chem Res, 2000, 39(6):1781-1787.

GALVEZ M E, BOYANO A, LAZARO M J. A study of the mechanisms of NO reduction over vanadium loaded activated carbon catalysts[J]. Chem Eng J, 2008, 144: 10-20.

RICHTER M, BENTRUP U, ECKELT R, SCHNEIDER M, FRICKER. The effect of hydrogen on the selective catalytic reduction of NO in excess oxygen over Ag/Al₂O₃[J]. Appl Catal B: Environ, 2004, 51(4): 261-274.

LI N, WANG A Q, TANG J W, WANG X D, LIANG D B, ZHANG T. NO reduction by CH₄ in the presence of excess O₂ over Co/sulfated zirconia catalysts[J]. Appl Catal B: Environ, 2005, 56(4): 269-277.

施引文献

资源附件(0)

访问统计