Elemental mercury removal from syngas by nano-ZnO sorbent

ZHOU Jin-song; QI Pan; HOU Wen-hui; You Shu-lin; GAO Xiang; LUO Zhong-yang

Volume 41 Issue 11

Nov. 2013

Turn off MathJax

Article Contents

Article Navigation > Journal of Fuel Chemistry and Technology > 2013 > 41(11): 1371-1377

ZHOU Jin-song, QI Pan, HOU Wen-hui, You Shu-lin, GAO Xiang, LUO Zhong-yang. Elemental mercury removal from syngas by nano-ZnO sorbent[J]. Journal of Fuel Chemistry and Technology, 2013, 41(11): 1371-1377.

Citation:

ZHOU Jin-song, QI Pan, HOU Wen-hui, You Shu-lin, GAO Xiang, LUO Zhong-yang. Elemental mercury removal from syngas by nano-ZnO sorbent[J]. Journal of Fuel Chemistry and Technology, 2013, 41(11): 1371-1377.

Citation:

PDF( 1493 KB)

Elemental mercury removal from syngas by nano-ZnO sorbent

State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China

Received Date: 2013-07-10
Rev Recd Date: 2013-08-29
Publish Date: 2013-11-30

Abstract

Abstract

Nano-ZnO sorbents synthesized by a homogeneous precipitation method were characterized by BET (Brunauer-Emmett-Teller), XRD (X-ray diffraction) as well as XPS (X-ray photoelectron spectroscopy) analysis. The adsorption of elemental mercury by nano-ZnO under nitrogen and simulated gas atmosphere was studied on a bench-scale fixed-bed apparatus. The effect of various gases on Hg⁰ removal performance by nano-ZnO was analyzed. The results show that the mercury removal efficiency of the nano-ZnO is relatively poor in nitrogen atmosphere. The presence of H₂S promotes the Hg⁰ removal by nano-ZnO observably and the mercury removal efficiency can be maintained for a long time even after stopping pass into H₂S. The presence of CO and H₂ promotes the Hg⁰ removal because of desulfurization effect of nano-ZnO. As the temperature increases, the formation of elemental sulfur in the surface of the nano-ZnO decreases, which can suppress the removal of Hg⁰ by sorbent.
- elemental mercury,
- nano-ZnO,
- removal efficiency,
- gas atmosphere

FullText(HTML)

References(20)

References

张亮, 禚玉群, 杜雯, 陶叶, 陈昌和, 徐旭常. 非碳基改性吸附剂汞脱除性能实验研究[J]. 中国电机工程学报, 2010, 30(17): 27-34. (ZHANG Liang, ZHUO Yu-qun, DU Wen, TAO Ye, CHEN Chang-he, XU Xu-chang. Experimental study on mercury removal efficiencies of modified non-carbon sorbens[J]. Proceedings of the CSEE, 2010, 30(17): 27-34.)

PIRRONE N, CINNIRELLA S, FENG X, FINKELMAN R B, FRIEDLI H R, LEANER J, MUKHERJEE A B, STRACHER G B, STREETS G, TELMER K. Global mercury emissions to the atmosphere from anthropogenic and natural sources[J]. Atmos Chem Phys, 2010, 10(13): 5951-5964.

赵建涛, 黄戒介, 卫小芳, 房倚天, 王洋. 钛酸锌高温煤气脱硫剂硫化再生性能的研究[J]. 燃料化学学报, 2007, 35(1): 66-71. (ZHAO Jian-tao, HUANG Jie-jie, WEI Xiao-fang, FANG Yi-tian, WANG Yang. Regeneration characteristics of sulfide zinc titanate sorbent for hot gas cleaning[J]. Journal of Fuel Chemistry and Technology, 2007, 35(1): 66-71.)

吕学勇. 复合金属氧化物在还原气氛中同时脱除单质汞和硫化氢的研究[D]. 太原: 太原理工大学, 2012. (LV Xue-jun. Mixed metallic oxide sorbents for simultaneous capture of hydrogen sulfide and mercury from reducing atmosphere[D]. Taiyuan: Taiyuan University of Technology, 2012.)

WANG J C, ZHANG Y P, HAN L N, CHANG L P, BAO W R. Simultaneous removal of hydrogen sulfide and mercury from simulated syngas by iron-based sorbents[J]. Fuel, 2013, 103: 73-79.

米亮亮, 赵永椿, 张军营, 郑楚光. 改性ZnFeO₄吸附剂煤气脱汞实验研究[J]. 工程热物理学报, 2013, 34(2): 384-387. (MI Liang-liang, ZHAO Yong-chun, ZHANG Jun-ying, ZHENG Chu-guang. Retention of mercury from coal gas using modified zinc ferrite adsorbent[J]. Journal of Engineering Thermophysics, 2013, 34(2): 384-387.)

PINEDA M, PALACIOS J M, ALONSO L, GARACIA E, MOLINER R. Performance of zinc oxide based sorbents for hot coal gas desulfurization in multicycle test in a fixed-bed reactor[J]. Fuel, 2000, 79(8): 885-895.

井立强, 郑莹光, 徐自力, 董凤霞, 孙晓君, 蔡伟民, 徐英凯. ZnO超微粒子的EPR特性和光催化性能[J]. 高等学校化学学报, 2001, 22(11): 1885-1888. (JING Li-qiang, ZHENG Ying-guang, XU Zi-li, DONG Feng-xia, SUN Xiao-jun, CAI Wei-ming, XU Ying-kai. Electronic paramagnetic resonance characteristic of ZnO ultrafine particles and their photocatalytic performance[J]. Chemical Journal of Chinese Universities, 2001, 22(11): 1885-1888.)

杨秋景, 徐自力, 谢超, 薛宝永, 杜尧国, 张家骅. 铕掺杂对纳米TiO₂的光催化活性的影响[J]. 高等学校化学学报, 2004, 25(9): 1711-1714. (YANG Qiu-jing, XU Zi-li, XIE Chao, XUE Bao-yong, DU Yao-guo, ZHANG Jia-hua. Effect of Eu³⁺doping on the photocatalytic activity of nanoparticles TiO[J]. Chemical Journal of Chinese Universities, 2004, 25(9): 1711-1714.)

邵纯红, 姜安玺, 李芬, 闫波, 周百斌. 纳米ZnO脱硫剂表面结构与室温脱除H₂S性能的研究[J]. 无机化学学报, 2005, 21(8): 1149 -1154. (SHAO Chun-hong, JIANG An-xi, LI Fen, YAN Bo, ZHOU Bai-bin. ZnO nanoparticles: Surface structure and desulfurization performance for H₂S at room temperature[J]. Chinese Journal of Inorganic Chemistry, 2005, 21(8): 1149 -1154.)

JADHAV R A, HOWARD M S, WINECKI S. Evaluation of nanocrystalline sorbents for mercury removal from coal gasifier fuel gas[C]//2005 AIChE Annual Meeting and Fall Showcase. Cincinnati, USA, 2005: 5526-5531.

孔凡海. 铁基纳米吸附剂烟气脱汞实验及机理研究[D]. 武汉: 华中科技大学, 2010. (KONG Fan-hai. Experimental and mechanism study of elemental mercury removal in flue gas of Fe-based nano-sorbent[D]. Wuhan: Huazhong University of Science & Technology, 2010.)

邵纯红, 姜安玺, 李芬, 闫波, 周百斌. 纳米ZnO室温选择氧化H₂S特性的研究[J]. 燃料化学学报, 2005, 33(4): 470-473. (SHAO Chun-hong, JIANG An-xi, LI Fen, YAN Bo, ZHOU Bai-bin. Study on selective oxidation of H₂S with nanometer ZnO at room temperature[J]. Journal of Fuel Chemistry and Technology, 2005, 33(4): 470-473.)

WU S J, UDDIN M A, SASAOKA E. Characteristics of the removal of mercury vapor in coal derived fuel gas over iron oxide sorbents[J].Fuel, 2006, 85(2): 213-218.

EOM Y, JEON S, NGO T, KIM J, LEE T G. Heterogeneous mercury reaction on a selective catalytic reduction (SCR) catalyst[J]. Catal Lett, 2008, 121: 219-225.

RODRIGUEZ J A, JIRSAK T, CHATURVEDI S, HRBEK J. The interaction of H₂S and S₂ with Cs and Cs/ZnO surfaces: Photoemission and molecular-orbital studies[J]. Surf Sci, 1998, 407: 171-188.

STEIJINS M, MARSS P. Catalytic oxidation of hydrogen surlfide. Influence of pore structure and chemical composition of various porous substances[J]. Ind Eng Chem Prod Res Dev, 1977, 16(1): 35-41.

尾崎萃, 田丸谦二. 催化剂手册[M]. 北京: 化学工业出版社, 1982. 117. (WEI Q C, TIAN W Q E. Handbook of catalyst[M]. Beijing: Chemical Industry Press, 1982. 117.)

樊惠玲, 郭汉贤, 李春虎, 谢克昌. 一氧化碳和氧对氧化锌脱硫行为的影响[J]. 复旦学报(自然科学版), 2003, 42(3): 274-279. (FAN Hui-ling, GUO Han-xian, LI Chun-hu, XIE Ke-chang. Effect of CO and O₂ on the desulfurization of ZnO[J]. Journal of Fudan University(Natural Science), 2003, 42(3): 274-279.)

金国杰, 樊惠玲, 李春虎, 郭汉贤. 氧化锌脱硫中氢和氧的双气氛效应及动力学研究[J]. 燃料化学学报, 2003, 31(4): 328-332. (JIN Guo-jie, FAN Hui-ling, LI Chun-hu, GUO Han-xian. Effect of H₂ and O₂ on the desulfurization over zinc oxide and its kinetic study[J]. Journal of Fuel Chemistry and Technology, 2003, 31(4): 328-332.)

Relative Articles

Supplements(0)

Cited By

Proportional views