Plasma-assisted process for removing NO/NOx from gas streams with C2H4 as additive

被引：11

作者：

Lee, HM ^{[1
]}

Chang, MB ^{[1
]}

Yang, SC ^{[1
]}

机构：

[1] Natl Cent Univ, Grad Inst Environm Engn, Chungli 320, Taiwan

来源：

JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE | 2003年 / 129卷 / 09期

关键词：

vapor; abatement and removal; air pollution; contaminants;

D O I：

10.1061/(ASCE)0733-9372(2003)129:9(800)

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

NOx removal from gas streams via dielectric barrier discharges (DBDs) has been experimentally evaluated. This paper investigates the effect of injecting C2H4 as an additive with respect to the De-NOx chemistry and the effect of gas composition on NO/NOx removal efficiencies. Experimental results indicate that both removal efficiencies of NO and NOx are enhanced with increasing applied voltage, gas temperature, and water vapor. Water vapor in gas streams has a distinct influence on NOx, removal by generating OR radicals to convert NO2 to form HNO3. NOx removal decreases with increasing oxygen content although NO removal increases with increasing oxygen content. As high as 100% of NO and 57% of NOx are removed at 140degreesC for the gas stream containing [NO]:[C2H4]:[H2O(g)]:[O-2]:[N-2]=0.05:0.2:3.0:5.0:91.75. Major mechanisins. for NO and NOx removals in DBD processing with C2H4 as an additive are described in the text.

引用

页码：800 / 810

页数：11

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