Use of Ozone-Enriched Air for Diesel Particulate Trap Regeneration

Levendis, Yiannis A.; Larsen, Chris A.

doi:10.4271/1999-01-0114

Cited by 7 publications

(6 citation statements)

References 28 publications

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“…Soot and SOF can be decomposed by the active materials produced by NTP reactor. The chemical reactions are shown as reaction (4)~reaction (9) (Okubo et al, 2008;Debora and Vito, 2008;Levendis and Larsen, 1999):…”

Section: Chemical Reaction Mechanism Of Dpf Regenaration Aided By Ntpmentioning

confidence: 99%

Meachanism and method of DPF regeneration by oxygen radical generated by NTP technology

Shi

Cai

et al. 2014

Int.J Automot. Technol.

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By using a self-designed non-thermal plasma (NTP) injection system, an experimental study of the regeneration of DPF was conducted at different temperatures, where oxygen as the gas source. The results revealed that PM can be decomposed to generate CO and CO 2 by these active substances O 3 , O which was generated through the discharge reaction of NTP reactor. With the increasing of test temperature, the mass of C 1 (C in CO) shows a overall downward trend while the mass of C 2 (C in CO 2 ) and C 12 (C 1 and C 2 ) increase firstly and then decrease. When the test temperature is 80 o C, the backpressure of DPF decreases fastest and the regenerative effect is remarkable. DPF can be regenerated by NTP technology without any catalyst at a lower temperature. Compared with the traditional regeneration method, the NTP technology has its superiority.

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Section: Chemical Reaction Mechanism Of Dpf Regenaration Aided By Ntpmentioning

confidence: 99%

Meachanism and method of DPF regeneration by oxygen radical generated by NTP technology

Shi

Cai

et al. 2014

Int.J Automot. Technol.

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“…This is a more advanced regeneration system capable to reduce DPM attaining low oxidation temperatures. The oxidation behaviour of soot in air that have been ionised by an electric arc (thermal plasma) at temperatures in the range from 200 to 450 0 C was investigated by Levendis et al [92]. It was found that the oxidation rate might increase more than 100%.…”

Section: Plasma Regeneration Systemsmentioning

confidence: 99%

A Review on Diesel Soot Emission, its Effect and Control

Прасад

Bella

2010

Bull. Chem. React. Eng. Catal.

142

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The diesel engines are energy efficient, but their particulate (soot) emissions are responsible of severe environmentaland health problems. This review provides a survey on published information regarding dieselsoot emission, its adverse effects on the human health, environment, vegetations, climate, etc. The legislationsto limit diesel emissions and ways to minimize soot emission are also summarized. Soot particles aresuspected to the development of cancer; cardiovascular and respiratory health effects; pollution of air, water,and soil; impact agriculture productivity, soiling of buildings; reductions in visibility; and global climatechange. The review covers important recent developments on technologies for control of particulate matter(PM); diesel particulate filters (DPFs), summarizing new filter and catalyst materials and DPM measurement.DPF technology is in a state of optimization and cost reduction. New DPF regeneration strategies(active, passive and plasma-assisted regenerations) as well as the new learning on the fundamentals ofsoot/catalyst interaction are described. Recent developments in diesel oxidation catalysts (DOC) are alsosummarized showing potential issues with advanced combustion strategies, important interactions on NO2formation, and new formulations for durability. Finally, systematic compilation of the concerned newer literatureon catalytic oxidation of soot in a well conceivable tabular form is given. A total of 156 referencesare cited. ©2010 BCREC UNDIP. All rights reserved(Received: 2nd June 2010, Revised: 17th June 2010; Accepted: 24th June 2010)[How to Cite: R. Prasad, V.R. Bella. (2010). Review on Diesel Soot Emission, its Effect and Control. Bulletin of Chemical Reaction Engineering and Catalysis, 5(2): 69-86. doi:10.9767/bcrec.5.2.794.69-86

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“…Current catalytic exhaust aftertreatment devices used for NOx reduction prefer nitrogen dioxide (N02) because it reacts faster with HC, hydrogen (H2), and CO in order to produce carbon dioxide (C02), water (H20), and nitrogen (N2) [6] while having improved surface adsorption abilities on the catalytic washcoat or support (e.g., barium) [7][8][9][10]. Several researchers have concluded that ozone, created using a plasma approach, is effective for oxidizing NO to N 02 in the exhaust, with Nakada et al [7] indicating a 50% NO concentration reduc tion over three separate loads [7,[11][12][13][14][15][16]. In addition to improving catalyst effectiveness, the resulting N 02 allows for continuous passive regeneration of the diesel particulate filter, resulting in enhanced PM reduction [8,17], For example, Okubo et al [II] discusses several studies that indicate the successful use of ozone via nonthermal plasma generation as a low-temperature PM oxi dizer.…”

Section: Introductionmentioning

confidence: 99%

Ozone-Assisted Combustion—Part I: Literature Review and Kinetic Study Using Detailed n-Heptane Kinetic Mechanism

Depcik

Mangus

Ragone

2014

Journal of Engineering for Gas Turbines and Power

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In this first paper, the authors undertake a review of the literature in the field of ozone-assisted combustion in order to summarize literature findings. The use of a detailed n-heptane combustion model including ozone kinetics helps analyze these earlier results and leads into experimentation within the authors' laboratory using a single-cylinder, direct-injection compression ignition engine, briefly discussed here and in more depth in a following paper. The literature and kinetic modeling outcomes indicate that the addition of ozone leads to a decrease in ignition delay, both in comparison to no added ozone and with a decreasing equivalence ratio. This ignition delay decrease as the mixture leans is counter to the traditional increase in ignition delay with decreasing equivalence ratio. Moreover, the inclusion of ozone results in slightly higher temperatures in the cylinder due to ozone decomposition, augmented production of nitrogen oxides, and reduction in particulate matter through radial atomic oxygen chemistry. Of additional importance, acetylene levels decrease but carbon monoxide emissions are found to both increase and decrease as a function of equivalence ratio. This work illustrates that, beyond a certain level of assistance (approximately 20 ppm for the compression ratio of the authors' engine), adding more ozone has a negligible influence on combustion and emissions. This occurs because the introduction of O3 into the intake causes a temperature-limited equilibrium set of reactions via the atomic oxygen radical produced.

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Use of Ozone-Enriched Air for Diesel Particulate Trap Regeneration

Cited by 7 publications

References 28 publications

Meachanism and method of DPF regeneration by oxygen radical generated by NTP technology

Meachanism and method of DPF regeneration by oxygen radical generated by NTP technology

A Review on Diesel Soot Emission, its Effect and Control

Ozone-Assisted Combustion—Part I: Literature Review and Kinetic Study Using Detailed n-Heptane Kinetic Mechanism

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