NDLI: Numerical Analysis of DE-NOx Process from Diesel Exhaust Gases by Heterogeneous Discharge Model

Content Provider	IEEE Xplore Digital Library
Author	Shoyama, T. Yoshioka, Y.
Copyright Year	2005
Description	Author affiliation: Kanazawa Inst. of Technol., Ishikawa (Shoyama, T.; Yoshioka, Y.)
Abstract	Summary form only given. Non-thermal plasma applications for pollution control such as $de-NO_{x}$ process are currently being investigated in various places. Some of them are experimental works, and others are 19 theoretical works of the $de-NO_{x}$ process. We have been investigating methods which improve the energy efficiency of the $de-NO_{x}$ process by computer simulation. So far the computer simulation works of the $de-NO_{x}$ process were carried out using a homogeneous discharge model, however because the silent discharge is consisted of many micro-discharges, it is necessary to use heterogeneous discharge model. In our previous works, we developed a calculation model which takes the structure of silent discharge into account, and using the model we have analyzed the NO removal mechanism, chemical reaction passes etc. However, the model assumed that the micro-discharges move with the same speed as gas flow. In the present work, we have improved the simulation model so as to include the effect of gas flow. The newly developed simulation program is a two-dimensional model and it takes the diffusion of radicals and movement of the micro-discharge channels into consideration. This analysis does not consider the turbulence of gas flow. Using this model, we calculated the NO removal performance of the 2 cases. The first case is that channel of a pulse micro discharge moves only one direction, and the second one is that it moves in random directions. Calculation results were compared with the results of the previous works. As the results, it became evident that the NO removal efficiency and NO removal rate are improved considerably by moving the channel of micro-discharge. The reason of the efficiency improvement comes from the facts that NO formation reactions from $NO_{2}$ by O radicals decrease and ozone dissociations by electrons and excited states of oxygen decrease as well.
Sponsorship	Plasma Sci. Appl. Comm. IEEE Nucl. Plasma Sci. Soc.
Starting Page	319
Ending Page	319
File Size	1038822
Page Count	1
File Format	PDF
ISBN	0780393007
ISSN	07309244
DOI	10.1109/PLASMA.2005.359454
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Numerical analysis Gases Chemical analysis Metalworking machines Plasma displays Fluid flow Voltage Computer simulation Plasma temperature Computer aided engineering
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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