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Non-Thermal Plasma Reactor Working With Exhaust Gas System In Marine Diesel Engine

Borkowski T., Myśków J., Kalisiak S., Hołub M.

Journal of Polish CIMAC

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2008

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Vol. 3, no 1

9-13

EN

Recently, we HAVE BEEN faced with the regulation of NOx from combustion exhaust gases, because it have caused smog, acid rain, and some diseases. The largest pollution sources in the world belongs to big seagoing vessels. The vessels are responsible for an estimated 14% of emission of nitrogen from fossil fuels and 16% of the emissions of sulfur from petroleum uses into the atmosphere. The Protocol adopted in 1997 includes the new Annex VI of Marpol 73/78, which entered into force on 19 May 2005. Nitrogen oxide emissions from ships were put at around 5 million tons per year – about 7% of total global emissions. This paper describes the experimental method – using non-thermal plasma reactor to clean exhaust gases. NTP reactor was built as the aftertreatment module in exhaust gas system in marine diesel engine. The main aim is to analyze exhaust gas compounds during steady load of engine, before and after NTP module.

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Non-thermal plasma reactor use in marine diesel engine exhaust system

Borkowski T., Myśków J., Kalisiak S., Hołub M.

Journal of KONES

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2008

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Vol. 15, No. 3

37-44

EN

Large seagoing vessels are one of the largest pollution sources in the sea environment world. Marine engines operate with extremely low quality fuels contaminated by sulphur and aromatic compounds. Vessels are responsible for an estimated 14 percent total nitrogen oxide emission and 16 percent sulphur oxide, respectively. Nitrogen oxides emissions cause serious problems including acid rain in local areas such as harbours' vicinity. All diesel engine manufacturers have been working on reducing on NOx from ships. This paper describes one of the experimental methods - using non-thermal plasma reactor. NTP reactor was built as the after-treatment module in exhaust gas system in marine diesel engine. Emission measurements were carried out on the engine with and without demonstrator NTP module. The main aim was to analyze exhaust gas compounds during real engine operation, in accordance with test cycles procedureD-2 and E-2 (ISO-8178 rules). The experiment test bench gives the innovative role in the development exhaust gas after-treatment technology for marine systems. One of the most promising methods to decrease the number of toxic compounds from exhaust gas is implementing of NTP reactor as after main treatment module. As the next steps a two-stage plasma-chemical process for the control of harmful compounds: non-thermal plasma reactor and catalyst is proposed. This combination should be more effective and probably gives reduction with more efficiency of harmful exhaust gas compounds.

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The Experimental Analysis Of Non-Thermal Plasma Reactor Use For Marine Diesel Exhaust

Borkowski T., Myśków J., Hołub M., Kalisiak S., Müller S., Rolf-Jürgen Z.

Journal of Polish CIMAC

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2007

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Vol. 2, no 1

77-84

EN

The control of NOx (NO and NO2) emissions from marine engines remains a challenge. In recent years, there have been a number of reports show that plasma device combined with a catalyst can reduce as high as 90% of NOx in simulated diesel exhaust gas. In the case of real diesel exhaust, the beneficial role of a plasma treatment is now thought to be the oxidation of NO to NO2, and the formation of partially oxidized hydrocarbons that are more active for the catalytic reduction of NO2. This paper briefly describes research efforts aimed non-thermal plasma reactor development for ships use, and primary focused on NO oxidation conditions, functionally fitted to the engine mode of operation.

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Development of low temperature plasma nox control system for marine diesel engine

Borkowski T., Myśków J., Hołub M., Kalisiak S.

Journal of KONES

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2007

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Vol. 14, No. 3

91-99

EN

The control of nox emissions from marine engines proves a challenge. Diesel engine manufacturers have been investigating a variety of methods with aim of reducing nox emissions. Currently, the plasma technology is undergoing rapid development in application to diesel engine exhausts. A combination of non-thermal plasma with catalysts can be referred to plasma assisted catalysts technology. This paper briefly describes research efforts aimed at non-thermal plasma reactor development for ship use with primary focus on NO oxidation condition. The part scale plasma reactor models have been designed and manufactured for the purpose of this trial. Exhaust emission plasma after-treatment module was fitted on exhaust outlet path of the marine test bed engine for fractional exhaust gas stream examination. Subsequently, the comprehensive series of trials were performed to assess the exhaust flow properties of the main exhaust channel and plasma reactor by-pass duct. Emission measurements were carried out on engine at steady-state operation. The NO reaction activity was a major task of the experiment and throughout the measurements, the engine outlet nox levels (NO and NO2) were monitored with simultaneous NO, NO2, N2O level recording after NTP reactor.