Pilot-Scale Aftertreatment Using Nonthermal Plasma Reduction of Adsorbed NO in Marine Diesel-Engine Exhaust Gas

Kuwahara, Takuya; Yoshida, Keiichiro; Kuroki, Tomoyuki; Hanamoto, Kenichi; Sato, Kazutoshi; Okubo, Masaaki
January 2014
Plasma Chemistry & Plasma Processing;Jan2014, Vol. 34 Issue 1, p65
Academic Journal
Regulations governing marine diesel engine NO emissions have recently become more stringent. As it is difficult to fulfill these requirements by combustion improvements alone, effective aftertreatment technologies are needed to achieve efficient NO reductions. In this study, we develop an effective NO-reduction aftertreatment system for a marine diesel engine that employs combined nonthermal plasma (NTP) and adsorption. Compared with selective catalytic reduction, the proposed technology offers the advantages of not requiring a urea solution or harmful heavy-metal catalysts and low operating temperatures of less than 150 °C. The NO reduction comprises repeated adsorption and desorption flow processes using NTP combined with NO adsorbents made of MnO-CuO. High concentrations of NO are treated by NTP after NO adsorption and desorption, and this aftertreatment system demonstrates excellent energy efficiencies of 161 g(NO)/kWh, which fulfills the most recent International Maritime Organization emission NO standards in the Tier II-III regulations for 2016 and requires only 4.3 % of the engine output power.


Related Articles

  • Reduction of the particulate and nitric oxide from the diesel engine using a plasma chemical hybrid system. Chae, J. O.; Hwang, J. W.; Jung, J. Y.; Han, J. H.; Hwang, H. J.; Kim, S.; Demidiouk, V. I. // Physics of Plasmas;Apr2001, Vol. 8 Issue 4, p1403 

    A new plasma/catalyst continuously regenerative hybrid system (PCRHS) is introduced to reduce diesel particulate matter (DPM), NOx, CO, etc., contained in diesel exhaust gas. The catalyst temperature, plasma energy density, and exhaust gas characteristics were investigated with a passenger...

  • Using Water-Plate Collector and Water Spray on ESP to Reduce Marine Diesel Exhaust Emission. Ariana, I Made; Fujita, Hirotsugu; Nishida, Osami; Harano, Wataru // Journal of Marine Environmental Engineering;2007, Vol. 9 Issue 1, p35 

    Electrostatic Precipitator (ESP), one of the methods to reduce particulate matter, can decrease particulate concentration in the marine diesel exhaust gas. Unburned hydrocarbon of particulate matter that is collected on the plate and electrode of ESP is difficult to remove using rapping method....

  • Field Measurement of Diesel Particulate Matter Emissions. Jon C. Volkwein; Steven E. Mischler; Brian Davies; Clive Ellis // Annals of Occupational Hygiene;Mar2008, Vol. 52 Issue 2, p99 

    A primary means to reduce environmental levels of diesel particulate matter (DPM) exposure to miners is to reduce the amount of DPM emission from the engine. A quick and economic method to estimate engine particulate emission levels has been developed. The method relies on the measurement of...

  • Selective approach meets interim emission standards. Vogt, Willie // Prairie Farmer;Feb2011, p24 

    The article reports on the approaches took by engine makers in the farm market to attain the Tier 4A emission standards in the U.S. in 2011. It mentions that selective catalytic reduction (SCR) provides one emissions-cutting approach and the diesel exhaust fluid (DEF) is a primary component to...

  • Use of plasma reforming of fuel for reduction of the toxicity of diesel engines. Zhdanok, S. A.; Vasil's, G. M.; Vasetskii, V. A.; Khavets, A. V. // Journal of Engineering Physics & Thermophysics;Jan2005, Vol. 78 Issue 1, p179 

    Problems in the use of plasma reforming of Diesel fuel for reduction of the toxicity of exhaust gases are considered. Results of experiments on the decomposition of Diesel fuel in nonequilibrium plasma of a spark discharge are given. It is shown that under these conditions the content of...

  • Spray to avoid DPF clogging.  // Motor Transport;6/7/2007, p10 

    The article focuses on the plasma-sprayed zirconia ceramic coating method, developed by Zircotec to prevent the diesel particulate filters (DPF) from clogging. According to the company, which supplies the nuclear industry and several Formula One racing teams, the method is applied to exhaust...

  • Alternative diagnostic method applied on marine diesel engines having limited monitoring susceptibility. Korczewski, Zbigniew; Zacharewicz, Marcin // Transactions of the Institute of Measurement & Control;Dec2012, Vol. 34 Issue 8, p937 

    The paper presents a method of technical state evaluation of working spaces of a marine diesel engine at the limited control susceptibility. The method foresees making a diagnosis of the engine’s working spaces on the basis of measurements of the exhaust gas pressure in the channels...

  • Computational Fluid Dynamics Analysis of the Scavenging Process in the MAN B&W 7S50MC Two-Stroke Marine Diesel Engine. Lamas, Marií Isabel; Rodríguez Vidal, Carlos Gervasio // Journal of Ship Research;Sep2012, Vol. 56 Issue 3, p154 

    This paper focuses on a computational fluid dynamics (CFD) analysis to simulate the scavenging process in the MAN B&W 7S50MC. This is a two-stroke diesel engine with uniflow scavenging. In recent years, low-speed, MC type two-stroke engines have become very popular in a huge number of different...

  • Evaluation of Catalyzed and Electrically Heated Filters for Removal of Particulate Emissions from Diesel-A- and JP-8-Fueled Engines. Kelly, Kerry E.; Wagner, David A.; Lighty, JoAnn S.; Sarofim, Adel F.; Bretecher, Brad; Holden, Bruce; Helgeson, Norm; Sahay, Keshav; Nardi, Zack // Journal of the Air & Waste Management Association (Air & Waste M;Jan2004, Vol. 54 Issue 1, p83 

    In-service diesel engines are a significant source of particulate matter (PM) emissions, and they have been subjected to increasingly strict emissions standards. Consequently, the wide-scale use of some type of particulate filter is expected. This study evaluated the effect of an Engelhard...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics