Untitled

Mok, Young Sun; Ham, Sung Won; Nam, In−Sik

doi:10.1023/a:1021863300810

Cited by 50 publications

(28 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To describe the dischargechemical phenomena more precisely, we should solve the mass and momentum balance equation, energy balance equation, and Maxwell equation with consideration of gaseous flow, diffusion of unstable and stable species, and streamer propagation. However, no numerical study considering all of these factors has yet been reported, although several studies considering some part of them have been reported; for example, a calculation considering only the chemical rate equations [10,11]; a calculation considering both the chemical rate equation and the Boltzmann equation [2,9]; a calculation of the streamers considering the mass balance equation and Poisson equation one-dimensionally [12]; and the corresponding two-dimensional calculations [13].…”

Section: Boltzmann Equation and Rate Equationsmentioning

confidence: 99%

Numerical analysis of effects of electric field and pulse duration on discharge DeNOx performance

Ito

Hagiwara

Nakaura

et al. 2002

Electrical Engineering Japan

View full text Add to dashboard Cite

SUMMARYBy virtue of its comparatively high denitrification (deNOx) efficiency and its compactness, the pulsed-discharge deNOx process is considered to be one of the deNOx processes suitable for combustion gas. However, there has been insufficient clear guidance on the optimum electric field, pulse duration, and pulse repetition frequency, and no clear understanding of pulsed-discharge deNOx process. In this study, we have simulated the pulsed-discharge deNOx process by solving the Boltzmann equation for discharge electrons and the deNOx chemical reaction equations simultaneously, and we have shown the time change of chemical species concentration, extracting the main deNOx reactions. The simulation shows that the pulsed-discharge deNOx process consists of two processes, the reduction of NO to N 2 by N radicals and the oxidation of NO to HNO 3 and HNO 2 by OH and O radicals, and that the amounts of radicals produced and consumed are governed by parameters such as the electric field, pulse duration, and pulse repetition frequency. In our simulation, such parameters are varied widely to examine their quantitative effect on the deNOx energy consumption, NxOy removal efficiency, and reduction ratio in the discharge deNOx process. The preliminary pulsed-discharge deNOx performance is estimated from our simulation, indicating that the discharge deNOx process has almost the same performance as the electron-beam deNOx process.

show abstract

Section: Boltzmann Equation and Rate Equationsmentioning

confidence: 99%

Numerical analysis of effects of electric field and pulse duration on discharge DeNOx performance

Ito

Hagiwara

Nakaura

et al. 2002

Electrical Engineering Japan

View full text Add to dashboard Cite

show abstract

“…In 1990, the first pilot test of pulsed corona was carried out (Dinelli, Civitano, and Rea 1990). According to numerous experimental and theoretical studies, it is feasible to develop an integrated device for desulfurization, denitrification (Mok, Ham, and Nam 1998) and de-dusting (Liu and Xue-Li 2004) of flue gas with the assistance of non-thermal plasma technology.…”

Section: Introductionmentioning

confidence: 99%

Decomposition of volatile organic compounds using corona discharge plasma technology

Gong

Lin

2019

Journal of the Air & Waste Management Association

View full text Add to dashboard Cite

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.

show abstract

“…A lot of studies have been devoted to plasmas generated by dielectric barrier [11,12,15,18,[20][21][22][23][24][25][26][27][28][29][30][31] (DBD) or corona [13,14,16,17,19,24,[32][33][34][35][36][37][38][39][40][41][42] discharges, without a catalyst, in dry or wet oxygen-rich gas mixtures containing traces of NO, and with [12-19, 23, 27-31, 42] or without [11, 20-22, 24-26, 32-41] hydrocarbon additives. Such discharges are strongly non-homogeneous with many plasma micro-filaments following the propagation of streamers in the inter-electrode volume [43,44].…”

Section: Introductionmentioning

confidence: 99%

Effect Of Propene, n-Decane, and Toluene Plasma Kinetics on NO Conversion in Homogeneous Oxygen-Rich Dry Mixtures at Ambient Temperature

Lombardi

Blin-Simiand

Jorand

et al. 2007

Plasma Chem Plasma Process

View full text Add to dashboard Cite

A photo-triggered discharge is used to study the influence of three hydrocarbons (HCs), propene (C 3 H 6 ), n-decane (C 10 H 22 ), and toluene (C 6 H 5 CH 3 ) on NO conversion in N 2 /O 2 /NO/HC mixtures, with 18.5% O 2 concentration, 700 ppm of NO, and an hydrocarbon concentration ranging between 190 ppm and 2,700 ppm. The electrical system generates a transient homogeneous plasma, working under 400 mbar total pressure, with a 50 ns short current pulse at a repetition frequency up to a few Hz. The NO concentration at the exit of the reactor is quantified using absolute FTIR spectroscopy measurements, as a function of the specific deposited energy in the discharge and the mixture composition. Owing to the plasma homogeneity, the experimental results can be compared to predictions of a self-consistent 0-D discharge and kinetic model based on available data in the literature about reactions and their rate constants. It is shown that the addition of either propene (as for DBD or corona discharges) or n-decane to N 2 /O 2 /NO leads to an improvement of the NO removal as compared to the mixture without hydrocarbon molecules. The adopted kinetic schemes explain this effect for the two mixture types. On the other hand, both the experiments and model predictions emphasize that the addition of toluene does not lead to the improvement of NO conversion. Moreover, compounds that are useful for NO x reduction catalysis, such as aldehydes, are less produced in the mixture with toluene.

show abstract

Untitled

Cited by 50 publications

References 9 publications

Numerical analysis of effects of electric field and pulse duration on discharge DeNOx performance

Numerical analysis of effects of electric field and pulse duration on discharge DeNOx performance

Decomposition of volatile organic compounds using corona discharge plasma technology

Effect Of Propene, n-Decane, and Toluene Plasma Kinetics on NO Conversion in Homogeneous Oxygen-Rich Dry Mixtures at Ambient Temperature

Contact Info

Product

Resources

About