Division BAT 18 In order to prevent or reduce NOX emissions to air from directly heated dryers, BAT is to use technique (a) or technique (a) in combination with technique (b).
United Kingdom
| Technique | Applicability | |
|---|---|---|
| a | Efficient operation of the combustion process using air- and fuel-staged combustion, while applying pulverised combustion, fluidised bed boilers or moving grate firing | Generally applicable |
| b | Selective non-catalytic reduction (SNCR) by injection and reaction with urea or liquid ammonia | Applicability may be limited by highly variable combustion conditions |
Table 2
BAT-associated emission levels (BAT-AELs) for NOX emissions to air from a directly heated dryer
| Parameter | Unit | BAT-AELs(average over the sampling period) |
|---|---|---|
| NOX | mg/Nm3 | 30–250 |
The associated monitoring is in BAT 14.
Notes on Division 1.2.1
Footnotes
- f1
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When a bag filter or a cyclofilter is not applicable, the upper end of the range can be up to 10 mg/Nm3.