NDLI: Improvement of N0x Reduction Efficiency in High Temperature System by Aerosol Assisted Non-Thermal Plasma Technique

Content Provider	IEEE Xplore Digital Library
Author	Yamada, K. Mitsuyoshi, K. Itoh, M.
Copyright Year	2005
Description	Author affiliation: Dept. of Chem. Eng. & Mater. Sci., Doshisha Univ., Kyoto (Yamada, K.; Mitsuyoshi, K.; Itoh, M.)
Abstract	Summary form only given. Disposal of $NO_{x}$ by the chemical reaction with radicals and ion radicals $(NH_{2},$ NH, OH and H) by non-thermal plasma technique (NTPT) is mainly proceeded with the particulate process of $NH_{4}NO_{3}$ vapor via homogeneous nucleation, condensation and coagulation. In the homogeneous nucleation and condensation, the activity (=(vapor pressure)/(saturated vapor pressure)) of the vapor is the essential parameter, and it should exceed unity even for condensation. But the activity becomes small at high temperature because of increase of saturated vapor pressure at high temperature like in a diesel dynamo. On the other hand, heterogeneous nucleation, which requires much less activity, is very effective for the condensational disposal of such gases, and heterogeneous nucleation process of $NH_{4}NO_{3}$ vapors on to foreign aerosol particles adding to the system from outside should be considered as the associated process of NTPT at high temperature. Removal of $NO_{x}$ by the association of aerosol particles in NTPT at high temperature was examined from the viewpoint of the improvement of reduction efficiency of exhaust gas. NO standard gas was supplied from a gas cylinder and adjusted the concentration in a dilution chamber with fleshed filtered air from a compressor. $N_{2},$ $O_{2}$ and $NH_{3}$ $(O_{2}:20%,$ $NH_{3}:1.0%)$ were also supplied from standard gas cylinders. To produce $NH_{x}$ radical shower, $NH_{3}$ balanced with $O_{2}$ diluted by $N_{2}$ was passed through a corona discharger and injected into a reaction chamber. Foreign aerosol particles were generated with an electric wire heating method. The number concentration and the size distribution of the nichrome aerosol particles were measured by CNC (TSI, Model-3020) with a diffusion battery. The generated aerosols were directly transported to an inlet of a reaction chamber without any additional treatment to keep the initial characteristics of the generated particles. The reaction chamber consisting of a ceramic tubular reactor (outer diameter: 75 mm, inner diameter: 68 mm, length: 1000 mm) to avoid uncertain reaction before the reaction chamber was set at the center of an electric furnace. Temperature of the electric furnace was varied from 100 to 350degC in this series experiments. From these experiments, the efficiency of NTPT was improved more than 20% with the association of foreign aerosol particles even at higher temperature more than 350degC. Total surface of aerosol particles annexing in exhausted gases containing $NO_{x}$ showed strong dependence on the improvement of reduction rate of such pollutant gases with NTPT. It suggested that the removal process of $NO_{x}$ should be progressed under the association of annexed aerosol particles.
Sponsorship	Plasma Sci. Appl. Comm. IEEE Nucl. Plasma Sci. Soc.
Starting Page	322
Ending Page	322
File Size	1190009
Page Count	1
File Format	PDF
ISBN	0780393007
ISSN	07309244
DOI	10.1109/PLASMA.2005.359459
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	Plasma temperature Aerosols Gases Plasma chemistry Character generation Furnaces Chemical processes Coagulation Magnetohydrodynamic power generation Air cleaners
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in