Reduction of nitrogen oxides with a flue gas desulphurization residue

In flue gas desulphurization processes which use ammonia as sorbent, the by-product typically consists of ammonia-sulphur compounds and ideally can be used as a fertilizer.

If the desulphurization product is separated together with the fly ash from the flue gas, the increased content of heavy metals can prohibit a general use. In this paper a new route for utilization is described for a desulphurization residue produced in the refinery of Schwechat. Due to the fly ash content the residue has higher concentrations of vanadium and nickel and hence has to be disposed of as hazardous waste underground. During the research it was shown, that this desulphurization residue is suitable for reduction of nitrogen oxides in the flue gas of a cement plant.



Copyright: © Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben
Quelle: DepoTech 2006: Abstracts in English (November 2006)
Seiten: 1
Preis: € 0,00
Autor: O.Univ.Prof., Dipl.-Ing., Dr.techn. Werner Kepplinger
Dipl.-Ing. Bernd Hollauf
M. Ernecker
 
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