Study on Reaction Products in Plasma-Assisted Selective Catalytic Reduction of NOx

Yoshizawa, Hayato; Tochikubo, Fumiyoshi; Uchida, Satoshi; Watanabe, Tsuneo

doi:10.1541/ieejfms.127.193

Cited by 2 publications

(2 citation statements)

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“…To solve this problem, plasma-enhanced HC-SCR, in which the gas discharge plasma is used as a pretreatment module to change the composition of exhaust gas for catalytic reaction, is actively studied. [4][5][6][7][8] In plasma-enhanced HC-SCR, the plasma is expected to have two roles; one is to oxidize NO into NO 2 , which is more easily reduced than NO by HC-SCR even in the low-temperature region. 4,6) Second is that the chemical byproducts from hydrocarbons in the plasma have a better performance as a reductant for HC-SCR of NO x .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Simulation of NO Oxidation in Dielectric Barrier Discharge with Microdischarge Formation

Tochikubo¹,

Uchida²,

Yasui

et al. 2009

jjap

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In this work, we developed a simulation model for plasma-enhanced chemical reaction in dielectric barrier discharge (DBD) in consideration of filamentary microdischarge formation. The first stage is the calculation of single filamentary microdischarge developed in DBD with parallel plate geometry using the fluid model. The second stage is the calculation of chemical processes with a set of rate equations using the radical production yield obtained in the filamentary microdischarge calculation. This model was applied to the NO oxidation process, which is often important in NO x removal using gas discharges, in atmospheric pressure N 2 /O 2 /NO mixtures under various discharge conditions. The calculated NO oxidation property has a quantitatively good agreement with the experimental one under wide discharge conditions. Therefore, the method used in this work is valid for the prediction of chemical processes in DBD. We also discuss the effect of gas temperature and gas residence time on NO oxidation.

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Section: Introductionmentioning

confidence: 99%

“…4,6) Second is that the chemical byproducts from hydrocarbons in the plasma have a better performance as a reductant for HC-SCR of NO x . 7,8) For the practical use of HC-SCR of NO x , the efficient oxidation of NO by the plasma is necessary as well as the improvement of catalyst ability.…”

Section: Introductionmentioning

confidence: 99%