Removal of Coal-Fired Pollutants Using a Novel Composite Collector in a Wet Electrostatic Precipitator

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Rigorous new regulations in coal-fired pollutants emissions from power plant strengthen the requirements for electrostatic precipitator (ESP) technology. The study was inspired by the requirement to use the new composite collectors as substitutes for typical steel collector to save energy and structural materials. A bench scale and a pilot scale experimental system have been set up to investigate the performance of the novel wet composite collector. Contrastive collection efficiencies of different assembled modes were investigated. The removals of coal-fired pollutants including acid aerosol, ammonia aerosol, slurry droplets and fine particles were performed in new wet ESP, as well as to quantify the key properties of the new wet ESP. The results show that the collection efficiency of the new composite collector was higher than that by typical collectors using a thimbleful of water penetrating the surface via capillary flow. The new wet ESP device acts in synergy with WFGD and SCR systems for controlling coal-fired pollutants emissions and solves the adverse impacts caused by wet flue gas desulfurization (WFGD) and selective catalytic reduction (SCR) systems at the same time.

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Periodical:

Edited by:

Z.S. Liu, L.P. Xu, X.D. Liang, Z.H. Wang and H.M. Zhang

Pages:

276-282

Citation:

J. Zhao et al., "Removal of Coal-Fired Pollutants Using a Novel Composite Collector in a Wet Electrostatic Precipitator", Advanced Materials Research, Vol. 1015, pp. 276-282, 2014

Online since:

August 2014

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$38.00

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[1] Daniel Fleig, Fredrik Normann. The fate of sulphur during oxy-fuel combustion of lignite[J]. Energy Procedia, 2009 (1) 383-390.

[2] BjÖrn Timmer, Wouter Olthuis. Ammonia sensors and their applications—a review[J]. Sensors and Actuators B, 2005 (107) 666–677.

[3] N. Grass, W. Hartmann, M. Klockner, Application of different types of high-voltage supplies on industrial electrostatic precipitators, Pulsed Power Conference, Monterey, California, USA: IEEE. (2005).

[4] ZHANG Jian, CAO Tao, JIANG Yuejun. Innovation and practice of high frequency electrostatic-fabric integrated dedusting[J]. Proceedings of the CSEE, 2009 29(12) 108.

[5] FAN Xuelin. Common malfuctions of the wet electrostatic precipatator and their remedies[J]. Coal Chemical Industry , 2005 (2) 50–51.

[6] Anatol Jaworek, Andrzej Krupa, Tadeusz Czech. Modern electrostatic devices and methods for exhaust gas cleaning: A brief review[J]. Journal of Electrostatics, 2007 (65) 133–155.

DOI: https://doi.org/10.1016/j.elstat.2006.07.012

[7] D. J. Bayless, M. K. Alam, R. J. Caine, Membrane-based wet electrostatic precipitation[J]. Fuel Processing Technology, 2004 (85) 781-798.

[8] J. Szekely, A.W. Neumann, Y.K. Chuang, The rate of capillary penetration and the applicability of the Washburn equation[J] . Journal of Colloid and Interface Science, 1971 35(2) 273-278.

DOI: https://doi.org/10.1016/0021-9797(71)90120-2

[9] L. Labajos-Broncano M.L. González-Martín J.M. Bruque, On the evaluation of the surface free energy of porous and powdered solids from imbibition experiments: equivalence between height–time and weight–time techniques[J]. Journal of Colloid and Interface Science, 2003 (26) 171-178.

DOI: https://doi.org/10.1016/s0021-9797(03)00209-1

[10] CHANG Jingcai, DONG Yong, WANG Zhiqiang , WANG Peng, CHEN Peng, MA Chunyuan, Removal of sulfuric acid aerosol in wet electrostatic precipitator with single terylene or polypropylene collection electrode[J], Journal of Aerosol Science, 2011 (42) 544-554.