Division 18

United Kingdom

When nitrates are used in the batch formulation and/or special oxidising combustion conditions are required in the melting furnace for ensuring the quality of the final product, BAT is to reduce NO_X emissions by minimising the use of these raw materials, in combination with primary or secondary techniques

The BAT-AELs are set out in Table 7.

If nitrates are used in the batch formulation for short campaigns or for melting furnaces with a capacity of < 100 t/day, the BAT-AEL is set out in Table 8.

A description of the techniques is given in Section 1.10.2.
Technique^f1	Applicability
Primary techniques: Minimising the use of nitrates in the batch formulation The use of nitrates is applied for very high quality products (i.e. flacconage, perfume bottles and cosmetic containers). Effective alternative materials are sulphates, arsenic oxides, cerium oxide. The application of process modifications (e.g. special oxidising combustion conditions) represents an alternative to the use of nitrates	The substitution of nitrates in the batch formulation may be limited by the high costs and/or higher environmental impact of the alternative materials

A description of the techniques is given in Section 1.10.2.

Technique^f1

Applicability

Primary techniques:

Minimising the use of nitrates in the batch formulation

The use of nitrates is applied for very high quality products (i.e. flacconage, perfume bottles and cosmetic containers).

Effective alternative materials are sulphates, arsenic oxides, cerium oxide.

The application of process modifications (e.g. special oxidising combustion conditions) represents an alternative to the use of nitrates

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 8

BAT-AEL for NO_X emissions from the melting furnace in the container glass sector, when nitrates are used in the batch formulation and/or special oxidising combustion conditions in cases of short campaigns or for melting furnaces with a capacity of < 100 t/day

Parameter	BAT	BAT-AEL
The conversion factor reported in Table 2 for specific cases (3 × 10^–3) has been applied.
Parameter	BAT	mg/Nm³	kg/tonne melted glass^f2
NO_X expressed as NO₂	Primary techniques	< 1 000	< 3

Annotations

Footnotes

f1: A description of the techniques is given in Section 1.10.2.
f2: The conversion factor reported in Table 2 for specific cases (3 × 10^–3) has been applied.