کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9623800 | 456586 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improvement in selective catalytic reduction of nitrogen oxides by using dielectric barrier discharge
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
The behavior of the selective catalytic reduction of nitrogen oxides (NOx) assisted by a dielectric barrier discharge was investigated. The principal function of the dielectric barrier discharge in the present system is to generate ozone, which is continuously fed to a chamber where the ozone and NO-rich exhaust gas (NO forms the large majority of NOx) are mixed. In the ozonization chamber, a part of NO contained in the exhaust gas is oxidized to NO2, and then the mixture of NO and NO2 enters the catalytic reactor. The ozonization method proposed in this study was found to be more energy-efficient for the oxidation of NO to NO2 than the typical nonthermal plasma process. The degree of NO oxidation was approximately equal to the amount of ozone added to the exhaust gas, implying that the decomposition of ozone into molecular oxygen was relatively slow, compared to its reaction with NO. When the exhaust gas was first treated by ozone to produce a mixture of NO and NO2, a remarkable enhancement in the catalytic reduction of nitrogen oxides was observed. Neither NO3 nor N2O5 was formed in the present system, but small amounts of ozone and N2O (less than 5Â ppm) were detected in the outlet gas.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 110, Issues 1â3, 1 June 2005, Pages 79-85
Journal: Chemical Engineering Journal - Volume 110, Issues 1â3, 1 June 2005, Pages 79-85
نویسندگان
Young Sun Mok, Heon-Ju Lee, MirosÅaw Dors, Jerzy Mizeraczyk,