Effects of water vapor on flue gas conditioning in the electric fields with corona discharge

Qi, Liqiang; Zhang, Yajuan

doi:10.1016/j.jhazmat.2013.04.019

Cited by 10 publications

(4 citation statements)

References 23 publications

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“…When the background gas is air in the DBD plasma system, a large number of oxygen-containing active substances such as O 3 will also be produced in addition to the nitrogenous active substances, as shown in figure S3 [40][41][42]. The main pathway of O 3 generation in DBD plasma is shown in the reaction equations ( 12)-( 15) [40]. Among them, M is a molecule such as N 2 or O 2 in the background air.…”

Section: Effect Analysis Of Active Substancementioning

confidence: 99%

Investigation of high-concentration toluene degradation by DBD plasma under different operating parameters

Hong

Yao

et al. 2023

J. Phys. D: Appl. Phys.

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This paper studied the degradation effect of high- concentration toluene in dielectric barrier discharge (DBD) plasma under different operating conditions. The degradation efficiency and energy yield (EY) were comprehensive evaluated by response surface method (RSM) under different operating parameters (discharge powers, gas flow rate, and initial concentrations) in the DBD plasma system. The results showed that EY and the degradation efficiency could reach 22.17 g/kWh and 72.3% when discharge power, initial concentration, and gas flow rate were 5.49 W, 1374.5 ppm, and 529.5 mL/min, respectively. Besides, mineralization effect was also analyzed related to different operating parameters. When the gas flow rate was 600mL/min and the initial concentration was 2500 ppm, the COx selectivity could reach 98.5%. Through the analysis of the effect of oxygen content in the background gas on high-concentration toluene degradation, it was found that oxygen content had a significant effect on the formation of oxygen-containing active substances. Emission spectra showed that normal air discharge occurred at the discharge space of DBD plasma, and nitrogen-containing active substances were generated. Therefore, active substances containing oxygen and nitrogen played an important role in DBD plasma degradation of high-concentration toluene.

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Section: Effect Analysis Of Active Substancementioning

confidence: 99%

Investigation of high-concentration toluene degradation by DBD plasma under different operating parameters

Hong

Yao

et al. 2023

J. Phys. D: Appl. Phys.

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“…However, the reduction of applied voltage and current will restrict the discharge and power injected, leading to poor performance in specific applications. Hence, periodic pulse corona discharge has been proposed to address this problem, as explored in the following content (Yan et al 2008a;Vandenbroucke et al 2011;Jiang and Zheng 1997;Lowke and Morrow 1995;Ogasawara et al 2015;Lee et al 2003a;Demidiouk and Chae 2005;Yao 2004;Fada et al 2015;Liqiang and Yajuan 2013).…”

Section: Principle Of Corona Dischargementioning

confidence: 99%

Decomposition of volatile organic compounds using corona discharge plasma technology

Gong

Lin

2019

Journal of the Air & Waste Management Association

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This paper explores the application of corona plasma technology as a tool in treatment of volatile organic compounds (VOCs). The review introduces the principle of corona discharge and describes the characteristics of plasma, especially of various corona plasma reactors. By summarizing the main features of such reactors, this paper provides a brief background to different power sources and reactor configurations and their application to VOC treatment design. Considering chlorinated compounds, benzene series and sulfur compounds, this paper reveals the probable mechanism of corona plasma in VOC degradation. Additionally, the effects of numerous technical parameterssuch as reactor structure, shape and materials of electrodes, and humidityare analyzed comprehensively. Product distribution, energy efficiency and economic benefits are invoked as factors to evaluate the performance of VOC degradation. Finally, the practical application of corona plasma and its advantages are briefly introduced. The review aims to illustrate the enormous potential of corona plasma technology in the treatment of VOCs, and identifies future directions. Implications: This paper comprehensively describes the principle, characteristics, research progress and engineering application examples of the degradation of volatile organics by corona discharge plasma, to provide a theoretical basis for the industrial application of this process.

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“…As a result, the removal efficiency of FP by traditional dedusting equipment is very low, especially for FP with a diameter of less than 1 μm (PM1.0) . In order to overcome the bottleneck effect of traditional technology in FP treatment, researchers try to use external field sources and matters such as electric field, acoustic field, magnetic field, temperature field, light source, chemical agglomeration solution, and water vapour for FP removal by coagulating and enlarging it first and then using conventional dust removal equipment. However, all of these technologies may be accompanied by relatively high investment costs and energy consumption, and some of these combined processes may cause secondary pollution and an increase in wastewater production …”

Section: Introductionmentioning

confidence: 99%

“…However, all of these technologies may be accompanied by relatively high investment costs and energy consumption, [21] and some of these combined processes may cause secondary pollution and an increase in wastewater production. [18][19][20]22] For the comprehensive consideration of treatment cost and removal efficiency of FP, wet dedusting methods exhibit many advantages such as high FP removal efficiency, low treatment cost, and the wastewater and exhaust gas can be treated simultaneously, or simultaneous removal of SO 2 and FP. [23][24][25][26][27][28] However, in the conventional wet dedusting devices function via a gravity-driven approach, [23][24][25] the FP removal efficiency is limited by the collision probability between the liquid phase and fine particles.…”

Section: Introductionmentioning

confidence: 99%

Removal model of fine particles from the flue gas of the coal‐fired power plant in a water‐sparged aerocyclone

Cheng

Cai

et al. 2019

Can J Chem Eng

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This paper describes a novel system of a water‐sparged aerocyclone (WSA) for fine particles (FP) removal in the air stream from a coal‐fired power plant. The effects of operating parameters, including inlet FP concentration (C 0(FP)), water jet velocity (UL), and air inlet velocity (UG) on the removal efficiency of FP (REFP) were investigated. The change of morphology, particle size distribution, and content of heavy metals of the FP samples before and after removal in the WSA were also compared. The results show that the RE of the FP and PM2.5 can reach as high as 99.36 and 99 %, respectively, under optimal conditions. A regression removal model of REFP = 85.08 × ReG0.0187 × ReL0.0037 × (C0(FP)/ρFP)0.0048 was proposed to predict REFP, and the calculated REFP by the model is in agreement with experimental data with deviations of ±0.5 %. This new technology provides an alternative approach for FP removal from exhaust gas and exhibits significant potential for industrial application.

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Effects of water vapor on flue gas conditioning in the electric fields with corona discharge

Cited by 10 publications

References 23 publications

Investigation of high-concentration toluene degradation by DBD plasma under different operating parameters

Investigation of high-concentration toluene degradation by DBD plasma under different operating parameters

Decomposition of volatile organic compounds using corona discharge plasma technology

Removal model of fine particles from the flue gas of the coal‐fired power plant in a water‐sparged aerocyclone

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