Removal of sulfuric acid aerosol in a wet electrostatic precipitator with single terylene or polypropylene collection electrodes

Chang, Jiang; Dong, Yong; Wang, Zhiqiang; Wang, Peng; Chen, Peng; Ma, Chunyuan

doi:10.1016/j.jaerosci.2011.05.006

Cited by 51 publications

(27 citation statements)

References 23 publications

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“…It has been concluded the overall V-I curve of composite fibrous materials was higher compared with the typical rigid collector using a thimbleful of water penetrating them [6]. As a result, current could be increased obviously to enhance the collection efficiency by fabrics collectors [7].…”

Section: Introductionmentioning

confidence: 97%

Mechanism Research on PM2.5 Charging, Precipitation in High Electrostatic Field

Chang¹,

Xu²,

Tao³

et al. 2015

JEP

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In this project, some charged characteristics, and analysis of precipitated PM2.5 in high electrostatic field were calculated based on theories and experiments. The connection between the charge amount and the additional electric field intensity caused by the wet flexible collectors was studied to reveal the mechanism of charging enhancement of PM2.5 on flexible collectors. Some explanation about the wet ability of collectors and the current density enhancing the precipitation process was proposed in this project. Simultaneously, the results shows that both gas treatment time and applied voltage have an important influence on particle collection, and the minor factor was initial concentration.

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Section: Introductionmentioning

confidence: 97%

Mechanism Research on PM2.5 Charging, Precipitation in High Electrostatic Field

Chang¹,

Xu²,

Tao³

et al. 2015

JEP

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“…At present, the materials of the collectors in the wet ESPs mainly include 316L stainless steel, dual-phase steel, fiber reinforce plastic (FRP) and fiber collectors, and so forth (Jiang et al, 2014;Chang et al, 2011;Bayless et al, 2004;Chang et al, 2010;Bayless et al, 2001;Peukert and Wadenpohl, 2001). And these materials have significant corrosion resistance to ensure the reliability and security of the collectors equipped in the wet ESPs.…”

Section: Introductionmentioning

confidence: 99%

Wetting properties and performance test of modified rigid collector in wet electrostatic precipitators

Chang

Meng

et al. 2016

Journal of the Air & Waste Management Association

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The fine particles are considered a significant pollution problem. The wet electrostatic precipitators (ESPs) have advantages of efficient collection of the fine particles with lower pressure drop and eliminating reentrainment. The wetting properties of the collector surfaces have significantly important effect on wet ESPs' stable and secure operation. The modified rigid collector (MRC) was modified by coating specific vinyl ester resin composites and loose glass fiber cloth over the conventional carbon steel in a certain way. The rigid collector surfaces before and after modification had been characterized by scanning electron microscopy (SEM) and interface tensiometer. The effect of operating temperatures on the wetting properties of the rigid collector surfaces before and after modification was investigated. The temperature range was 40~90°C, and the wetting properties contained liquid holdup, surface flow rate, film rate, average film thickness, and critical saturation time. The modified rigid collector surface exhibited excellent wetting properties at the operating temperatures. The fine particles collection performance compared among the MRC, the conventional rigid collector (CRC), and the flexible collector (FC) in the wet ESPs was investigated. The effects of the applied voltage, the water film, corona power, and the specific collecting area on the fine particles collection were evaluated. The modified rigid collector provided high fine particles collection effect with lower energy and water consumption.Implications: To improve the submicron particles collection efficiency and decrease energy and water consumption, the formation of uniform water film over the collector surfaces has been widely studied. The modified rigid collector was modified by coating specific vinyl ester resin composites and loose glass fiber cloth (ERGF) over the conventional carbon steel (CCS) in a certain way. The modified rigid collector surface exhibited excellent wetting properties. The wet ESPs by the modified rigid collector exhibited significantly higher particles collection efficiency than by the conventional rigid collector.PAPER HISTORY

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“…Therefore, the research of reasonable collection electrode modification methods which can increase the surface energy and form complete liquid film with ultralow water consumption so as to solve the traditional rigid plate needing high flushing water consumption, high cost and complex flushing water system process and so on has become the hot topic in the industry. As a result, flexible hydrophobic and insulated collection electrode of polypropylene [5] [14], terylene [15], silica fiber membranes [16] and carbon-fiber membranes [17] have been developed and tested.…”

Section: Introductionmentioning

confidence: 99%

Wetting Characterization of Hybrid Coatings Deposited on Carbon Steel Collectors for Hydrophilic Modification

Xu¹,

Chang²,

Song

et al. 2015

JEP

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The additional anticorrosive coating and hydrophilic layer of glass fiber cloth (GFC) deposited on the carbon steel sheet (CSS) was experimented and the surface wetting characteristic of the hydrophilic modified collection electrode was investigated under single strand feed water condition. The distilled water was selected as the working fluid. The influence of Reynolds number on the surface wetting characteristic parameters and those parameters at different temperatures were specifically studied. The results indicate that the GFC surface with loose glass fiber bundles reveals remarkable surface wetting characterizations. The saturated liquid holdup of this surface is 8 -10 times more than that of the CSS surface; the surface flowrate value is 6 -8 percent of that of the CSS surface; the film rate of this surface is 28 -32 times more than that of the CSS surface; the average film thickness is between a third and a half of the value of the CSS surface. Good agreement is achieved between the WESPs working temperature and the experimental temperature range with remarkable wetting characterizations that provides a theoretical basis for the industrial application. Not satisfactorily, the hydrophilic modification surface is not able to survive high temperature.

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Removal of sulfuric acid aerosol in a wet electrostatic precipitator with single terylene or polypropylene collection electrodes

Cited by 51 publications

References 23 publications

Mechanism Research on PM2.5 Charging, Precipitation in High Electrostatic Field

Mechanism Research on PM2.5 Charging, Precipitation in High Electrostatic Field

Wetting properties and performance test of modified rigid collector in wet electrostatic precipitators

Wetting Characterization of Hybrid Coatings Deposited on Carbon Steel Collectors for Hydrophilic Modification

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