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Title: Effects of CH{sub 4} and CO on the reduction of nitric oxide to nitrogen in a discharge reactor

Abstract

Additives are often added to enhance the efficiency of NO removal. This study uses a radio frequency (rf) discharge to consider the effect of added CH{sub 4} and CO to simulated NO/N{sub 2}/O{sub 2}/H{sub 2}O mixtures on the elevation of NO conversion and the reduction of NO into N{sub 2}. The enhancement levels of NO conversion when using various additives were found to be in this order: +CH{sub 4}>+CO>no additive. NO conversion reached 99.3%, 86.2%, and 77.6% when adding CH{sub 4}, CO, and without additive, respectively, at inlet additive/NO molar ratio (R) = 5 and at 120 W. Moreover, the fraction of total N atoms converted from NO into N{sub 2} (F{sub N2}) was very high, reaching 99.4% and 99.5% when adding CH{sub 2}4 and CO, respectively, at R = 1 and at 120 W. The better operating conditions are using CH{sub 4} as the additive at R = 1 and a power of >60 W to reach a higher NO conversion with a higher F{sub N2}. However, it should be noted that this rf plasma approach is not practical at this stage because of its relative low pressure. 25 refs., 2 figs., 3 tabs.

Authors:
; ; ; ;  [1]
  1. National Kaohsiung University of Applied Sciences, Kaohsiung (Taiwan). Department of Chemical and Material Engineering
Publication Date:
OSTI Identifier:
20847483
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of the Air and Waste Management Association; Journal Volume: 57; Journal Issue: 1; Other Information: chtsai@cc.kuas.edu.tw
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; NITRIC OXIDE; REMOVAL; ADDITIVES; EFFICIENCY; PLASMA; RF SYSTEMS; AIR POLLUTION CONTROL; CORONA DISCHARGES; METHANE; MIXTURES; NITROGEN; REDUCTION; ELECTRIC POWER; AMMONIA; CALCIUM HYDROXIDES; BENCH-SCALE EXPERIMENTS; CHEMICAL REACTORS

Citation Formats

Cheng-Hsien Tsai, Lien-Te Hsieh, Juu-En Chang, Yi-Ming Kuo, and Ying-I Tsai. Effects of CH{sub 4} and CO on the reduction of nitric oxide to nitrogen in a discharge reactor. United States: N. p., 2007. Web. doi:10.1080/10473289.2007.10465298.
Cheng-Hsien Tsai, Lien-Te Hsieh, Juu-En Chang, Yi-Ming Kuo, & Ying-I Tsai. Effects of CH{sub 4} and CO on the reduction of nitric oxide to nitrogen in a discharge reactor. United States. doi:10.1080/10473289.2007.10465298.
Cheng-Hsien Tsai, Lien-Te Hsieh, Juu-En Chang, Yi-Ming Kuo, and Ying-I Tsai. Mon . "Effects of CH{sub 4} and CO on the reduction of nitric oxide to nitrogen in a discharge reactor". United States. doi:10.1080/10473289.2007.10465298.
@article{osti_20847483,
title = {Effects of CH{sub 4} and CO on the reduction of nitric oxide to nitrogen in a discharge reactor},
author = {Cheng-Hsien Tsai and Lien-Te Hsieh and Juu-En Chang and Yi-Ming Kuo and Ying-I Tsai},
abstractNote = {Additives are often added to enhance the efficiency of NO removal. This study uses a radio frequency (rf) discharge to consider the effect of added CH{sub 4} and CO to simulated NO/N{sub 2}/O{sub 2}/H{sub 2}O mixtures on the elevation of NO conversion and the reduction of NO into N{sub 2}. The enhancement levels of NO conversion when using various additives were found to be in this order: +CH{sub 4}>+CO>no additive. NO conversion reached 99.3%, 86.2%, and 77.6% when adding CH{sub 4}, CO, and without additive, respectively, at inlet additive/NO molar ratio (R) = 5 and at 120 W. Moreover, the fraction of total N atoms converted from NO into N{sub 2} (F{sub N2}) was very high, reaching 99.4% and 99.5% when adding CH{sub 2}4 and CO, respectively, at R = 1 and at 120 W. The better operating conditions are using CH{sub 4} as the additive at R = 1 and a power of >60 W to reach a higher NO conversion with a higher F{sub N2}. However, it should be noted that this rf plasma approach is not practical at this stage because of its relative low pressure. 25 refs., 2 figs., 3 tabs.},
doi = {10.1080/10473289.2007.10465298},
journal = {Journal of the Air and Waste Management Association},
number = 1,
volume = 57,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}