Pulsed dielectric barrier discharge reactor for diesel particulate matter removal

Yao, Shuiliang; Okumoto, M.; Madokoro, Kazuhiko; Yashima, Tatsuaki; Suzuki, Eiji

doi:10.1002/aic.10176

Cited by 20 publications

(25 citation statements)

References 26 publications

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“…The rise time of pulse voltage, peak value of the pulse voltage, and energy injection are important parameters that influence energy efficiency and installation cost of the pulse power supply. From the previous results [8,13] and the results in this study, we found that the rise time of the pulse voltage does not affect PM removal efficiency obviously.…”

Section: Methodsmentioning

confidence: 58%

“…We demonstrated that PM from a diesel engine can be removed as high as 90% using a pulsed corona surface discharge (PCSD) and a tubular dielectric barrier discharge (DBD) reactor [8,13]. In a further study, we found that PM deposited on surfaces of the dielectric barrier inhibits corona discharge occurrence in the PCSD reactor.…”

Section: Introductionmentioning

confidence: 93%

“…Typical after treatment methods for removing PM include using diesel particulate filter (DPF) or catalyst-based DPF (CB-DPF) [2][3][4] and nonthermal plasmas [5][6][7][8]. The first attempt for the reduction of the visible and thus disturbing black smoke by the use of particulate traps were taken early in the 60s.…”

Section: Introductionmentioning

confidence: 99%

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Uneven Dielectric Barrier Discharge Reactors for Diesel Particulate Matter Removal

Yao

Fushimi

Madokoro

et al. 2006

Plasma Chem Plasma Process

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Uneven dielectric barrier discharge (DBD) reactors driven by positivenegative pulse plasma discharges were investigated for particulate matter (PM) removal from a diesel engine. Two kinds of uneven alumina plates and three kinds of uneven stainless steel plates were used to assemble six kinds of uneven DBD reactors of discharge gaps 0.4-1.0 mm. The experimental results show that PM from diesel engines can be removed using the uneven DBD reactors. The maximum PM removal was 67% at 300 W energy injections using the DBD reactor of 0.4 mm gap distance. PM removal increased with decreasing gap distance. The energy efficiency using the uneven DBD reactor of a shorter gap distance was higher than that using the uneven DBD reactor of a longer gap distance as the uneven DBD reactor of a shorter gap distance has a higher PM deposition rate. The energy efficiency was typically in a range of 3-10.6 g/kWh at an energy density of 2-16 J/L. A comparison of this study with reports given by other research groups is given.

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Section: Methodsmentioning

confidence: 58%

Section: Introductionmentioning

confidence: 93%

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Uneven Dielectric Barrier Discharge Reactors for Diesel Particulate Matter Removal

Yao

Fushimi

Madokoro

et al. 2006

Plasma Chem Plasma Process

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“…Recently, the authors have developed an uneven dielectric barrier discharge (DBD) reactor driven by a pulse power supply for the removal of particulate matter (PM) emitted from a diesel engine. 2,3 The uneven DBD reactor was operated at an energy density as low as a value of 2-16 J/L. The energy efficiency (defined as the amount of removed PM per kW h electric power) of the DBD reactor achieved a level of 3-10.6 g/kWh, indicating that such a plasma PM removal method has potential for the practical use to remove PM from diesel engines.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on diesel PM removal using uneven DBD reactors

et al. 2007

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in Wiley InterScience (www.interscience.wiley.com).The removal of diesel particulate matter (PM) is experimentally carried out using two types of uneven dielectric barrier discharge (DBD) reactors driven by positivenegative pulse voltage power supplies. One uneven DBD reactor is fed with exhaust gases from a diesel engine at the exhaust gas temperature and another uneven DBD reactor is fed with PM dispersed in a gas mixture of oxygen and nitrogen at room temperature, where PM was collected from the exhaust gases of the diesel engine. PM emission rates, PM sizes, and PM oxidation products are measured using a PM emission rate monitor, a particle size spectrometer, and a gas chromatograph at various discharge energy densities. It has been found that most of PM is oxidized completely into gaseous products of CO and CO 2 under plasma discharge conditions.

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“…11 The DBD plasma has widely been applied for the generation of ozone; in ultraviolet (UV) sources and excimer lamps; in polymer treatment (particularly to enhance wettability, printability, and adhesion); for biological and medical applications; in CO 2 laser; in plasma-assisted combustion; and so on. [12][13][14] Above all, the surface treatment by plasma has attracted much attention of researchers in material processing fields because of its convenience, effectiveness, and low cost.…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic coating of silicate phosphor powder using atmospheric pressure dielectric barrier discharge plasma

2014

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A stable superhydrophobic coating was successfully deposited on commercial silicate-based orange phosphor by using atmospheric pressure dielectric barrier discharge plasma with hexamethyldisiloxane (HMDSO) and HMDSO/toluene mixture as precursors. Owning to the good optical properties, the deposited film acts not only as a hydrophobic protective layer but also as an antireflection optical thin film capable of improving the phosphor photoluminescence efficiency. The plasma-polymerized film based on SiAOASi backbone containing methyl and phenyl nonpolar functional groups exhibited high-water-repellent characteristics. It was found that the water contact angle gradually increased with increasing the aging time and remained unchanged at about 140 after 1-month aging. Besides, the thermal stability of the coated phosphor under high-temperature condition was substantially enhanced by the aging. The findings of this work can contribute to improving the durability and reliability of the phosphor, eventually the long-term stability of phosphor-based light emitting diodes in practical applications. V C 2014 American Institute of Chemical Engineers AIChE J, 60: [829][830][831][832][833][834][835][836][837][838] 2014

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Pulsed dielectric barrier discharge reactor for diesel particulate matter removal

Abstract: A dielectric barrier discharge (DBD)

Cited by 20 publications

References 26 publications

Uneven Dielectric Barrier Discharge Reactors for Diesel Particulate Matter Removal

Uneven Dielectric Barrier Discharge Reactors for Diesel Particulate Matter Removal

Experimental investigation on diesel PM removal using uneven DBD reactors

Hydrophobic coating of silicate phosphor powder using atmospheric pressure dielectric barrier discharge plasma

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