Division 11
United Kingdom
BAT is to reduce boron emissions from the melting furnace, when boron compounds are used in the batch formulation, by using one or a combination of the following techniques:
| A description of the techniques is given in Sections 1.10.1, 1.10.4 and 1.10.6. | |
| Techniquef1 | Applicability |
|---|---|
| (i) Operation of a filtration system at a suitable temperature for enhancing the separation of boron compounds in the solid state, taking into account that some boric acid species may be present in the flue-gas as gaseous compounds at temperatures below 200 °C, but also as low as 60 °C | The applicability to existing plants may be limited by technical constraints associated with the position and characteristics of the existing filter system |
| (ii) Use of dry or semi-dry scrubbing in combination with a filtration system | The applicability may be limited by a decreased removal efficiency of other gaseous pollutants (SOX, HCl, HF) caused by the deposition of boron compounds on the surface of the dry alkaline reagent |
| (iii) Use of wet scrubbing | The applicability to existing plants may be limited by the need of a specific waste water treatment |
Annotations
Footnotes
- f1
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A description of the techniques is given in Sections 1.10.1, 1.10.4 and 1.10.6.