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SNCR for Low NO_x Emissions - Case Study of a Swedish Waste-to-Energy Plant -

All over the world people understand that reducing air pollution is essential to increase health and comfort of people. Nitrogen oxides (NO_x) are among the main components of pollutants caused by combustion processes. It is toxic by direct contact and it causes acid rain.

Therefore, most governments regulate the emission of nitrogen oxides in flue gas from plants of all kind by law and/or financial incentives. NO_x reduction by Selective Non Catalytic Reaction (SNCR) is next to the Selective Catalytic Reaction (SCR) the most common way to reduce NO_x in flue gases.

During the past years, the efficiency of SNCR Technology could be increased in such a way that it is possible to reduce NO_x by more than 70 percent in conventional Waste-to- Energy units. In addition, the application range of SNCR has been extended even for larger combustion plants due to ongoing developments. Today, it is one of the best available technologies for NO_x control in many countries world-wide.

Within this paper, a new high performance SNCR application being installed at a Swedish Waste-to-Energy plant will be presented including operational experiences and lessons learnt due to the specifics of this plant.

Copyright:	© Thomé-Kozmiensky Verlag GmbH
Quelle:	Waste Management, Volume 5 (Dezember 2015)
Seiten:	14
Preis:	€ 0,00
Autor:	Dr.-Ing. Wolfgang Schüttenhelm Philip Reynolds
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