Division 40
United Kingdom
When nitrates are used in the batch formulation, BAT is to reduce NOX emissions by minimising the use of these raw materials, in combination with primary or secondary techniques.
The BAT-AELs are set out in Table 29.
If nitrates are used in the batch formulation for a limited number of short campaigns or for melting furnaces with a capacity < 100 t/day producing special types of soda-lime glasses (clear/ultra-clear glass or coloured glass using selenium) and other special glasses (i.e. borosilicate, glass ceramics, opal glass, crystal and lead crystal), the BAT-AELs are set out in Table 30.
| A description of the technique is given in Section 1.10.2. | |
| Techniquef1 | Applicability |
|---|---|
| Primary techniques: | |
| The substitution of nitrates in the batch formulation may be limited by the high costs and/or higher environmental impact of the alternative materials |
Table 30
BAT-AELs for NOX emissions from the melting furnace in the domestic glass sector, when nitrates are used in the batch formulation for a limited number of short campaigns or for melting furnaces with a capacity < 100 t/day producing special types of soda-lime glasses (clear/ultra-clear glass or coloured glass using selenium) and other special glasses (i.e. borosilicate, glass ceramics, opal glass, crystal and lead crystal
| The conversion factor reported in Table 2 for soda-lime glass (2,5 × 10–3) has been applied. | |||
| Parameter | Type of furnace | BAT-AEL | |
|---|---|---|---|
| mg/Nm3 | kg/tonne melted glass | ||
| NOX expressed as NO2 | Fuel/air conventional furnaces | < 500 – 1 500 | < 1,25 – 3,75f2 |
| Electric melting | < 300 – 500 | < 8 – 10 | |
Annotations
Footnotes
- f1
-
A description of the technique is given in Section 1.10.2.
- f2
-
The conversion factor reported in Table 2 for soda-lime glass (2,5 × 10–3) has been applied.