NOx Aftertreatment System for Diesel Engine Emission Using Thermal Desorption and Plasma Reduction Combined Process

Yoshida, Keiichiro; Mihalcioiu, A.; Okubo, Masaaki; Kuroki, Tomoyuki; Yamamoto, Toshiaki

doi:10.1109/ias.2007.285

Cited by 1 publication

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“…A novel system for diesel emissions control [1][2][3] currently under development is using NO x adsorption, thermal desorption, and subsequent reduction by non-thermal plasma. The NO x is first removed by adsorption from the high flow rate low concentration exhaust gas, then the adsorbent is regenerated by thermal desorption of a low flow rate high concentration gas using waste heat of the exhaust gas.…”

Section: Introductionmentioning

confidence: 99%

Design Factors for NOx Reduction in Nitrogen Plasma

Mihalcioiu

Okubo²,

Kuroki³

et al. 2007

2007 IEEE Industry Applications Annual Meeting

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The aim of this paper is to analyze the influence of plasma discharge reactor unit geometries on the efficiency of dry NO x reduction process in nitrogen plasma environments. The experimental setup consists of the versatile plasma discharge reactor unit powered by 10 kHz pulse HV supply and supplied by mass flow controllers with a simulated (NO+N 2 ) gas under different concentrations and flowing rates. The measurements are obtained by the means of a gas analyzer for NO/NO x concentration and a digital oscilloscope supplied with HV and current probes for discharge power computation. The number of surface discharge electrodes, the distance between them, their active area, the gas flow rate and concentration are studied while aiming at 30 g(NO 2 )/kWh energy efficiency and higher reduction efficiencies. These targets are keys to industrial application of plasma discharge reactor, as a way of reducing NO x from the regeneration phase, in the next generation diesel exhaust aftertreatment system and the results proved successful.

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Section: Introductionmentioning

confidence: 99%