Hydrocarbon Assisted NO Oxidation with Non-thermal Plasma in Simulated Marine Diesel Exhaust Gases

Schmidt, Michael; Basner, R.; Brandenburg, Ronny

doi:10.1007/s11090-012-9424-6

Cited by 30 publications

(15 citation statements)

References 20 publications

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“…In view of these circumstances concerning marine diesel emissions, the issue of NO x treatment requires urgent attention [23]- [25]. In 2011, the main manufacturers of marine diesel engines successfully reached Tier-II NO x emission standards solely by combustion or engine incineration improvements.…”

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confidence: 99%

A Pilot-Scale Experiment for Total Marine Diesel Emission Control Using Ozone Injection and Nonthermal Plasma Reduction

Kuwahara

Yoshida

Hanamoto

et al. 2015

IEEE Trans. on Ind. Applicat.

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Due to the fact that it is difficult to fulfill the recent stringent regulations governing marine diesel engine emission by means of combustion improvement alone, an effective aftertreatment technology is required to achieve the efficient simultaneous removal of NO x and particulate matter (PM). In the present study, we designed and investigated an effective aftertreatment system that employs a combination of ozone injection and nonthermal plasma (NTP) reduction for a marine diesel engine. The proposed technology offers the advantage of not requiring precious-metal catalysts and harmful heavy-metal catalysts as well as urea solution. In this aftertreatment system, PM in the exhaust gas is first captured by a ceramic diesel particulate filter. Subsequently, the deposited PM is oxidized and removed by NTP-induced ozone injection. After the PM treatment, NO x in the exhaust gas is treated by adsorption followed by NTP-combined desorption and reduction processes. These processes are repeated periodically, and total emission control is achieved. Since the deposited PM and the desorbed NO x are treated at a high-concentration state by ozone and oxygen-lean NTP, a higher performance for total marine diesel emission control is recorded. The maximum efficiencies of NO x and PM reduction were 94% and 95%, respectively.Index Terms-Adsorbent, aftertreatment, diesel particulate filters (DPFs), marine diesel engine, marine diesel oil (MDO), nonthermal plasma (NTP), NO x , ozone, particulate matter (PM).

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mentioning

confidence: 99%

A Pilot-Scale Experiment for Total Marine Diesel Emission Control Using Ozone Injection and Nonthermal Plasma Reduction

Kuwahara

Yoshida

Hanamoto

et al. 2015

IEEE Trans. on Ind. Applicat.

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“…The experimental results were expressed in terms of NO and SO 2 removal efficiency by plasma, which were defined as follows: In order to study the energy efficiency of DBD reactor for NO and SO 2 removal, the removal energy per molecule is calculated by [21]: Energy per NO removed ½eV=NO� ¼ 232…”

Section: Methodsmentioning

confidence: 99%

Experimental study on the influence of H ₂ O vapor and O ₂ for desulfurization and denitrification of the diesel exhaust in marine application by non‐thermal plasma

Cai

Lü

2021

High Voltage

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To improve the pollutant removal efficiency by non-thermal plasma (NTP), the effect of H 2 O vapor and O 2 on removal efficiency of NO and SO 2 as well as the reduction of CO was investigated in H 2 O/O 2 /SO 2 /NO/C 3 H 6 /CO 2 /N 2 system. To analyse the reaction mechanism, the effects of H 2 O vapor and O 2 on the emission intensity of Oð3p 5 P → 3s 5 S 0 2 Þ and OHðA 2 ∑ þ → X 2 ∏Þ were investigated. The experimental results show that the increase of H 2 O vapour (0%-9.8%) promotes the generation of OH radicals, increases the removal efficiency of NO from 18.9% to 57.3%, decreases the energy per NO removed from 449.0 to 148.1 eV/NO, increases SO 2 removal efficiency from 4.8% to 35.3%, decreases the energy per SO 2 removed decreases from 2784.0 to 582.9 eV/SO 2 , and reduces the generation of CO from 460 to 229 ppm. In the range of 0%-15%, the increase of O 2 content promotes the formation of O radicals, increases the removal efficiency of NO from 8.5% to 54.2%, and decreases the energy per NO removed from 994.3 to 156.4 eV/NO. In the range of 0%-5%, increasing O 2 content promotes SO 2 removal efficiency from 8.7% to 24.8%, and decreases the energy per SO 2 removed from 2485.7 to 876.6 eV/SO 2 . However, CO generation increases from 200 to 350 ppm with the increase of O 2 in 0%-5% due to the incomplete oxidation of C 3 H 6 . In the range of 5%-15%, the increase of O 2 produces more O radicals, decreases the removal efficiency of SO 2 from 24.8% to 23.5% and the generates of CO from 350 to 311 ppm. This study is helpful for improving the efficiency of NTP for desulfurization and denitrification, while reducing the by-product CO.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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“…Besides, the non-thermal plasma has showed promising results in the field of human health protection by using non-thermal plasma for disinfection [21,22] and the environment by improving air and water quality [23][24][25][26]. Moreover, plasma was applied to remove NO X from real flue gases of power plants and diesel engines [17,18,27] or synthetic flue gases representing certain types of real flue gas [14][15][16][28][29][30][31]. Most often, the used gases represent exhausts from diesel engines or coal power plants which contain relatively large concentrations of nitrogen oxides and hydrocarbons.…”

Section: Introductionmentioning

confidence: 99%

“…The presence of water may improve the NO X removal [36,37] by converting NO 2 to HNO 2 and HNO 3 [32,36,38]. Efficiency of NO conversion to NO 2 and NO X removal may be further increased in the presence of hydrocarbons [28][29][30][31]. Another possibility to improve the NO X oxidation efficiency at high NO X concentrations is to use ozone instead of the direct plasma oxidation [20].…”

Section: Introductionmentioning

confidence: 99%

Application of Non-Thermal Plasma for NOx Reduction in the Flue Gases

et al. 2019

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Over the years, ever more stringent requirements on the pollutant emissions, especially NO X , from combustion systems burning natural gas are introduced by the European Union (EU). Among all NO X reduction methods, the flue gas treatment by plasma is widely applied and could be used for both small scale and domestic combustion systems. However, the removal efficiency depends on concentrations of oxygen, water vapor, traces of hydrocarbons, and nitrogen oxides in flue gas. In order to analyze the application of the NO X reduction for small-scale or domestic combustion systems, experiments of NO X reduction by non-thermal plasma from real flue gases originating from premixed methane combustion at different equivalence ratio (ER) values were performed. It was determined that the residual oxygen in flue gas plays an important role for improvement of NO to NO 2 oxidation efficiency when O 2 concentrations are equal to or higher than 6%. The power consumption for the plasma oxidation constituted approximately 1% of the burner power. In the case of ozone treatment, the addition of O 3 to flue gas showed even more promising results as NO formed during combustion was fully oxidized to NO 2 at all ER values.

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Hydrocarbon Assisted NO Oxidation with Non-thermal Plasma in Simulated Marine Diesel Exhaust Gases

Cited by 30 publications

References 20 publications

A Pilot-Scale Experiment for Total Marine Diesel Emission Control Using Ozone Injection and Nonthermal Plasma Reduction

A Pilot-Scale Experiment for Total Marine Diesel Emission Control Using Ozone Injection and Nonthermal Plasma Reduction

Experimental study on the influence of H ₂ O vapor and O ₂ for desulfurization and denitrification of the diesel exhaust in marine application by non‐thermal plasma

Application of Non-Thermal Plasma for NOx Reduction in the Flue Gases

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Hydrocarbon Assisted NO Oxidation with Non-thermal Plasma in Simulated Marine Diesel Exhaust Gases

Cited by 30 publications

References 20 publications

A Pilot-Scale Experiment for Total Marine Diesel Emission Control Using Ozone Injection and Nonthermal Plasma Reduction

A Pilot-Scale Experiment for Total Marine Diesel Emission Control Using Ozone Injection and Nonthermal Plasma Reduction

Experimental study on the influence of H 2 O vapor and O 2 for desulfurization and denitrification of the diesel exhaust in marine application by non‐thermal plasma

Application of Non-Thermal Plasma for NOx Reduction in the Flue Gases

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Experimental study on the influence of H ₂ O vapor and O ₂ for desulfurization and denitrification of the diesel exhaust in marine application by non‐thermal plasma