Division BAT 48
United Kingdom
In order to reduce PCDD/F emissions to air from the pyrolytic treatment of copper turnings, smelting, melting, fire refining and converting operations in secondary copper production, BAT is to use one or a combination of the techniques given below.
| Descriptions of the techniques are given in Section 1.10. | |
| Technique | |
|---|---|
| a | Select and feed the raw materials according to the furnace and the abatement techniques used |
| b | Optimise combustion conditions to reduce the emissions of organic compounds |
| c | Use charging systems, for a semi-closed furnace, to give small additions of raw material |
| d | Thermal destruction of PCDD/F in the furnace at high temperatures (> 850 °C) |
| e | Use oxygen injection in the upper zone of the furnace |
| f | Internal burner system |
| g | Post-combustion chamber or afterburner or regenerative thermal oxidiserf1 |
| h | Avoid exhaust systems with a high dust build-up for temperatures > 250 °C |
| i | Rapid quenching |
| j | Injection of adsorption agent in combination with an efficient dust collection system |
BAT-associated emission levels: See Table 5.
Table 5
BAT-associated emission levels for PCDD/F emissions to air from the pyrolytic treatment of copper turnings, smelting, melting, fire refining and converting operations in secondary copper production
| As an average over a sampling period of at least six hours. | |
| Parameter | BAT-AEL (ng I-TEQ/Nm3)f2 |
|---|---|
| PCDD/F | ≤ 0,1 |
Annotations
Footnotes
- f1
-
Descriptions of the techniques are given in Section 1.10.
- f2
-
As an average over a sampling period of at least six hours.