Division 10

United Kingdom

BAT is to limit ammonia (NH₃) emissions, when applying selective catalytic reduction (SCR) or selective non-catalytic reduction (SNCR) techniques for a high efficiency NO_X emissions reduction

Technique	Applicability
The technique consists of adopting and maintaining suitable operating conditions of the SCR or SNCR waste gas treatment systems, with the aim of limiting emissions of unreacted ammonia	Applicable to melting furnaces fitted with SCR or SNCR

Table 4

BAT-AELs for ammonia emissions, when SCR or SNCR techniques are applied

Parameter	BAT-AELs^f1
The higher levels are associated with higher inlet NO_X concentrations, higher reduction rates and the ageing of the catalyst.
Ammonia, expressed as NH₃	< 5 – 30 mg/Nm³

Annotations

Footnotes

f1: The higher levels are associated with higher inlet NO_X concentrations, higher reduction rates and the ageing of the catalyst.