Division 22
United Kingdom
When tin, organotin or titanium compounds are used for hot-end coating operations, BAT is to reduce emissions by using one or a combination of the following techniques:
| A description of the techniques is given in Sections 1.10.4 and 1.10.7. | |
| Technique | Applicability |
|---|---|
| (i) Minimising the losses of the coating product by ensuring a good sealing of the application system and applying an effective extracting hood. A good construction and sealing of the application system is essential for minimising losses of unreacted product into the air | The technique is generally applicable |
| (ii) Combining the flue-gas from the coating operations with the waste gas from the melting furnace or with the combustion air of the furnace, when a secondary treatment system is applied (filter and dry or semi-dry scrubber). Based on the chemical compatibility, the waste gases from the coating operations may be combined with other flue-gases before treatment. These two options may be applied:
| The combination with flue gases from the melting furnace is generally applicable. The combination with combustion air may be affected by technical constraints due to some potential effects on the glass chemistry and on the regenerator materials |
| (iii) Applying a secondary technique, e.g. wet scrubbing, dry scrubbing plus filtrationf1 | The techniques are generally applicable |
Table 12
BAT-AELs for air emissions from hot-end coating activities in the container glass sector when the flue-gases from downstream operations are treated separately
| Parameter | BAT-AEL |
|---|---|
| mg/Nm3 | |
| Dust | < 10 |
| Titanium compounds expressed as Ti | < 5 |
| Tin compounds, including organotin, expressed as Sn | < 5 |
| Hydrogen chloride, expressed as HCl | < 30 |
Annotations
Footnotes
- f1
-
A description of the techniques is given in Sections 1.10.4 and 1.10.7.