Characteristics and the behavior in electrostatic precipitators of high-alumina coal fly ash from the Jungar power plant, Inner Mongolia, China

Qi, Liqiang; Yuan, Yong

doi:10.1016/j.jhazmat.2011.05.012

Cited by 25 publications

(16 citation statements)

References 12 publications

(13 reference statements)

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“…Large amounts of bauxite are imported yearly to meet the industrial demands in China. It was determined that alumina contains abundant amounts of CFA, and the alumina content of CFA with 30% total emission in China exceeds 30% [7,8]. This CFA presents great application prospects and is known as high-alumina fly ash (HAFA).…”

Section: Introductionmentioning

confidence: 99%

Effects of vacuum conditions on activation of high-alumina fly ash roasted using conventional and microwave heating

Kou

Zhou

Yang

et al. 2020

Mater. Res. Express

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In this study, Na 2 CO 3 was used as activator to roast and activate high-alumina fly ash (HAFA), and the vacuum roasting technology was used to enhance the activation process of HAFA. The effects of the vacuum conditions on the activation of HAFA roasted using conventional and microwave heating were investigated. It was determined that the reaction time was shortened and the activation effect of HAFA was improved under vacuum conditions; however, the effect of the vacuum conditions on the roasting temperature was negligible. The activation process of HAFA-Na 2 CO 3 mixtures (HAFA/Na 2 CO 3 mass ratio of 1:1) was promoted by conducting conventional and microwave heating experiments under vacuum (−0.04 MPa). The leaching rate of aluminium of 93.00% was reached at the roasting temperature of 900°C after only 20 min when the HAFA-Na 2 CO 3 mixture was subjected to conventional heating under vacuum, and after 60 min when conventional heating occurred under normal atmospheric pressure. Moreover, the leaching rate of aluminium of 96.00% was reached at the roasting temperature of 700°C after only 20 min when the HAFA-Na 2 CO 3 mixture underwent microwave heating under vacuum, and after 30 min when microwave heating occurred under normal atmospheric pressure.

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Section: Introductionmentioning

confidence: 99%

Effects of vacuum conditions on activation of high-alumina fly ash roasted using conventional and microwave heating

Kou

Zhou

Yang

et al. 2020

Mater. Res. Express

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“…Mass CFA, which is produced by coal combustion power plants, is polluting the environment and wasting resources; moreover, heavy metals in CFA worsen the pollution problem (Nowak et al, 2013). High alumina fly ash (HAFA) is unique because it has a high concentration of alumina (Al 2 O 3 wt.% N 50%), which mainly comes from the thermal power plants in Inner Mongolia and Shanxi Province in China (Bai et al, 2011;Qi and Yuan, 2011). HAFA is considered as a potential substitute product for the preparation of alumina, because alumina content in it is much higher than that of normal architectural material (Yao et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Mineral phase transition of desilicated high alumina fly ash with alumina extraction in mixed alkali solution

Sun

Wang

et al. 2016

International Journal of Mineral Processing

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“…Traditionally, electrostatic precipitators (ESP) have been used extensively in industry as air purification devices. In countries such as China, flue gasses are primarily cleaned by ESPs (Qi and Yuan 2011). However, because of their effectiveness at collecting aerosols, ESPs have been adapted for airborne particle sampling.…”

Section: Overviewmentioning

confidence: 99%

“…Industrial precipitators usually use a negative corona that operates at higher voltages to achieve higher efficiency (Hinds 2012). Factories in China use ESPs as the primary method in clearing flue-gases released by coal-fired power plants (Qi and Yuan 2011). However, as new restrictions of ambient air quality standards are implemented, ESPs are currently being used for environmental air pollution control.…”

Section: Electrostatic Precipitatormentioning

confidence: 99%

“…In ESPs, PM is collected by electrostatics onto a dry surface without a noisy sampling pump needed to overcome high pressure ESPs are widely used in industry to remove harmful airborne particles. In developing countries like China, flue gases released by coal-fired power plants are primarily cleaned by ESPs (Qi and Yuan 2011). In Japan, ESPS are used to collect dust in pulverized coal combustion boilers (Noda and Makino 2010).…”

Section: Introductionmentioning

confidence: 99%

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Electrostatic precipitator to collect large quantities of particulate matter

Ong¹

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____________________________________________ Elizabeth A. Stone ____________________________________________ Michael Mackey ii ACKNOWLEDGEMENTS Firstly, I would like to thank my family, who have funded my education and been supportive of my career choices. I also appreciate all the help I have received from my research advisor Dr. Thomas Peters. Dr. Peters provided me with guidance throughout my thesis writing process and experimentations. Dr. Peters has introduced me to an unprecedented level of aerosol science research that I was not aware existed prior to joining his laboratory. I would like to thank my collaborator on this paper Dr. Sinan Sousan, who has assisted me with all my experiments in addition to providing constructive feedback in all my research endeavors. Dr. Sousan was also critical in my successful completion of experiments. Without his knowledge of aerosol measuring instruments and his troubleshooting experience, I may not have completed my experiments in a timely manner. I would also like to thank Changjie Cai, a PhD candidate in my laboratory, for assisting me with my calculations and for allowing me to contact him with my questions. Lastly, I would like to thank my laboratory colleagues Larissa, Kate, Jae, Kevin, Alyson, Laura, and Theresa, who have been very patient in helping me understand occupational and environmental hygiene material. The friendship they have shown me made my research experience enjoyable despite frequent setbacks.iii ABSTRACT Traditional aerosol samplers are limited in their abilities to collect large quantities of particulate matter due to their low flow rates, high pressure drops, and are noise intrusiveness. The goal of this study was to develop an alternate aerosol sampler using electrostatic precipitation technology that was safe and not noise intrusive to be deployed in homes. The O-Ion B-1000 was selected as the most suitable electrostatic precipitator (ESP) for achieving the goal of this study because of its affordability, the design of its collection electrode and its high flow rate. The collection efficiency of the ESP was assessed for three aerosols; Arizona Road Dust (ARD), NaCl and diesel fumes. ARD was found to have the highest average collection efficiency (65%) followed by NaCl (43%) and lastly diesel fumes (41%).A method for recovering the particulate matter deposited on the collection electrode was developed. The dust collected on the electrode was recovered onto polyvinyl chloride (PVC) filters moistened with deionized water. Additionally, the recovery of the three test aerosols, ARD, NaCl, and diesel fumes, from the collection electrode was assessed. A gravimetric analysis was done to determine the amount of dust recovered. The collection efficiency was used to calculate the amount of mass expected on the filter for a particular aerosol. NaCl had the highest recovery at 95% recovery, followed by ARD (73%) and lastly diesel fumes (50%). Two identical ESPs were also deployed in an office and in a bedroom, 104.47 mg and 9.64 mg of particulate matter (PM)...

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Characteristics and the behavior in electrostatic precipitators of high-alumina coal fly ash from the Jungar power plant, Inner Mongolia, China

Cited by 25 publications

References 12 publications

Effects of vacuum conditions on activation of high-alumina fly ash roasted using conventional and microwave heating

Effects of vacuum conditions on activation of high-alumina fly ash roasted using conventional and microwave heating

Mineral phase transition of desilicated high alumina fly ash with alumina extraction in mixed alkali solution

Electrostatic precipitator to collect large quantities of particulate matter

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