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New Developments of an Effective SNCR Control System Incorporating the NO_x Mass Flow Profile

The NO_x reduction rates which have been achieved in recent years using non-catalytic technologies (SNCR) have proved to be reliable even in applications which were believed to work only with the more costly SCR process in the past. In the meantime, SNCR has advanced to be the Best Available Technology (BAT) in grate-fired combustion plants.

In power plants, NO_x emissions of 200 to 250 mg/Nm³ in the flue gases can be obtained by applying primary measures alone. An additional reduction below the actual emission level of 200 mg/Nm³ is more and more often realized by using SNCR technology. Due to their size and operating conditions power plant boilers have more complex requirements than Waste-to-Energy plants. Therefore, further steps are needed to catch up with the advances that the SCR process still has over SNCR. This paper describes where the SNCR technology stands today and in which areas there is further potential.

Copyright:	© Thomé-Kozmiensky Verlag GmbH
Quelle:	Waste Management, Volume 5 (Dezember 2015)
Seiten:	12
Preis:	€ 0,00
Autor:	Dipl.-Ing. Bernd von der Heide
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