Plasma-based process for reducing emissions from marine diesel engines

Project leader: Prof. Dr. W. Maus-Friedrichs

Fundingperiod: 01/2015 - 12/2015 Funding body: Alfred Kärcher-Förderstiftung Funding code: -

Researcher: M.Sc. Lisa Wurlitzer

The aim of this project is to build a laboratory-scale plasma-based filter system based on dielectrically hindered discharge (DBE). In addition, the collection of gas samples from the exhaust gas of running marine diesel engines will be prepared and carried out. Based on these gas samples, a parameter study of the plasma system will then be completed using the real exhaust gas samples. This should enable subsequent industrial production for the manufacture of initial prototypes.

The purification of such an exhaust gas with sulfur, nitrogen oxide and soot emissions is to be carried out in a three-stage process for this purpose. In the first step, the soot particles are gasified to carbon dioxide and the sulfur is precipitated by means of an initial plasma discharge. The sulfur particles thus precipitated are then transferred in the gas stream to a storage tank. In a second discharge at the outlet of the container, the remaining sulfur residues are plasma-chemically stored in a powdery bulk material before a catalyst decomposes the nitrogen oxides in the afterglow of the plasma.