Experimental Study on Influences of $ C_{3} %$ H_{6} $ and $ CO_{2} $ in Diesel Exhaust on Desulfurization and Denitrification by Nonthermal Plasma
Abstract Effects of $ C_{3} %$ H_{6} $ and $ CO_{2} $ on desulfurization and denitrification by nonthermal plasma (NTP) and formation of the by-product CO were investigated under the simulated diesel exhaust condition. Optical emission spectroscopy (OES) was employed to observe the plasma process, and effects of $ C_{3} %$ H_{6} $ and $ CO_{2} $ on the emission intensities of O %${\text{(3p}}^{{5}} {\text{P}} \to {\text{3s}}^{{5}} {\text{S}}_{{2}}^{{0}} {)}%$ and OH %$({A}^{2}{\sum }^{+}\to {\mathrm{X}}^{2}\prod )%$ were detected. The experimental result shows that the $ CO_{2} $ concentration has negligible effect on formation of O and OH radicals, and the change in the $ CO_{2} $ concentration has no significant impact on the removal of NO and $ SO_{2} $, but every 1% increase of the $ CO_{2} $ concentration will raise the CO by about 22.5 ppm. When the $ C_{3} %$ H_{6} $ concentration increases from 0 to 600 ppm, the NO removal efficiency increases from 42.8 to 70.5%. However, the existence of $ C_{3} %$ H_{6} $ has marginal effect on the $ SO_{2} $ removal. $ C_{3} %$ H_{6} $ is an effective additive for the oxidative removal of NO, which can react with O and OH radicals in DBD reactor and generate a lot of oxidative radicals including $ HO_{2} $ and $ RO_{2} $ ($ C_{2} %$ H_{5} %$ O_{2} $, $ CH_{3} %$ O_{2} $, $ HOC_{3} %$ H_{6} %$ O_{2} $). The generated $ HO_{2} $ and $ RO_{2} $ will replace O and OH radicals as the main species to realize the oxidative removal of NO. However, the by-product CO formed in the plasma process and the unreacted $ C_{3} %$ H_{6} $ also need to be concerned. Through analyzing the mechanism of $ CO_{2} $ and $ C_{3} %$ H_{6} $ promoting the removal of NO and $ SO_{2} $ in a more realistic simulated gas atmosphere based on OES, the present study can provide guidance for improving the efficiencies of desulfurization and denitrification for marine diesel exhaust by NTP..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:43 |
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| Enthalten in: |
Plasma chemistry and plasma processing - 43(2023), 3 vom: 15. März, Seite 619-633 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Cai, Yunkai [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| Themen: |
C |
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| Anmerkungen: |
© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. |
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| doi: |
10.1007/s11090-023-10321-2 |
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| Förderinstitution / Projekttitel: |
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SPR050092987 |
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| 100 | 1 | |a Cai, Yunkai |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Experimental Study on Influences of $ C_{3} %$ H_{6} $ and $ CO_{2} $ in Diesel Exhaust on Desulfurization and Denitrification by Nonthermal Plasma |
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| 520 | |a Abstract Effects of $ C_{3} %$ H_{6} $ and $ CO_{2} $ on desulfurization and denitrification by nonthermal plasma (NTP) and formation of the by-product CO were investigated under the simulated diesel exhaust condition. Optical emission spectroscopy (OES) was employed to observe the plasma process, and effects of $ C_{3} %$ H_{6} $ and $ CO_{2} $ on the emission intensities of O %${\text{(3p}}^{{5}} {\text{P}} \to {\text{3s}}^{{5}} {\text{S}}_{{2}}^{{0}} {)}%$ and OH %$({A}^{2}{\sum }^{+}\to {\mathrm{X}}^{2}\prod )%$ were detected. The experimental result shows that the $ CO_{2} $ concentration has negligible effect on formation of O and OH radicals, and the change in the $ CO_{2} $ concentration has no significant impact on the removal of NO and $ SO_{2} $, but every 1% increase of the $ CO_{2} $ concentration will raise the CO by about 22.5 ppm. When the $ C_{3} %$ H_{6} $ concentration increases from 0 to 600 ppm, the NO removal efficiency increases from 42.8 to 70.5%. However, the existence of $ C_{3} %$ H_{6} $ has marginal effect on the $ SO_{2} $ removal. $ C_{3} %$ H_{6} $ is an effective additive for the oxidative removal of NO, which can react with O and OH radicals in DBD reactor and generate a lot of oxidative radicals including $ HO_{2} $ and $ RO_{2} $ ($ C_{2} %$ H_{5} %$ O_{2} $, $ CH_{3} %$ O_{2} $, $ HOC_{3} %$ H_{6} %$ O_{2} $). The generated $ HO_{2} $ and $ RO_{2} $ will replace O and OH radicals as the main species to realize the oxidative removal of NO. However, the by-product CO formed in the plasma process and the unreacted $ C_{3} %$ H_{6} $ also need to be concerned. Through analyzing the mechanism of $ CO_{2} $ and $ C_{3} %$ H_{6} $ promoting the removal of NO and $ SO_{2} $ in a more realistic simulated gas atmosphere based on OES, the present study can provide guidance for improving the efficiencies of desulfurization and denitrification for marine diesel exhaust by NTP. | ||
| 650 | 4 | |a Nonthermal plasma |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Desulfurization |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Denitrification |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a C |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a H |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a CO |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a O and OH radicals |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Xiang, Chuang |4 aut | |
| 700 | 1 | |a Zhu, Neng |4 aut | |
| 700 | 1 | |a Lv, Lin |4 aut | |
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