Simultaneous removal of NO_x and fine diesel particulate matter (DPM) by electrostatic water spraying scrubber

Authors: Ha, Tran Hong; Nishida, Osami; Fujita, Hirotsugu; Wataru, Harano

Source: Proceedings of IMarEST - Part A - Journal of Marine Engineering and Technology, Volume 2009, Number 15, September 2009 , pp. 45-53(9)

Publisher: IMarEST

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Abstract:

In this study, experiments were performed with an electrostatic water spraying scrubber to evaluate its effectiveness for simultaneous removal of NO_x and Diesel Particulate Matter (DPM) emissions in marine exhaust gas. The effects of several parameters, such corona power, gas flow rate and engine load, on the contaminant removals have been investigated intensively. The present study shows that for a given gas flow rate, the removal of DPM is enhanced with the increase of applied voltage. Total DPM removal efficiency was higher than 97% by electrostatic attraction, DPM with a range smaller than 1 μm is removed for higher efficiency. NO, NO_x were removed with values higher than 20%, depending on Cl^- concentration in the seawater and engine loads. As a result, the electrostatic water spraying scrubber would appear to be a promising alternative method for control of mass-based, as well as number-based DPM emissions.

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Document Type: Research article

Publication date: 2009-09-01

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