Division 48

United Kingdom

BAT is to reduce dust emissions from the waste gases of the melting furnace by using one or a combination of the following techniques:

Technique^f1	Applicability
A description of the techniques is given in Section 1.10.1.
(i) Reduction of the volatile components by raw material modifications The formulation of the batch composition may contain very volatile components (e.g. boron, fluorides) which represent the main constituents of dust emitted from the melting furnace	The technique is generally applicable within the constraints of the quality of the glass produced
(ii) Electric melting	Not applicable for large volume glass productions (> 300 tonnes/day) Not applicable for productions requiring large pull variations The implementation requires a complete furnace rebuild
(iii) Filtration system: electrostatic precipitator or bag filter	The technique is generally applicable

Table 38

BAT-AELs for dust emissions from the melting furnace in the special glass sector

Parameter	BAT-AEL
The conversions factors of 2,5 × 10^–3 and 6,5 × 10^–3 have been used for the determination of the lower and upper value of the BAT-AELs range (see Table 2), with some values being approximated. However, a-case-by-case conversion factor needs to be applied, depending on the type of glass produced (see Table 2).
The BAT-AELs apply to batch formulations containing significant amounts of constituents meeting the criteria as dangerous substances, in accordance with Regulation (EC) No 1272/2008.
Parameter	mg/Nm³	kg/tonne melted glass^f2
Dust	< 10 – 20	< 0,03 – 0,13
Dust	< 1 – 10^f3	< 0,003 – 0,065

Annotations

f1: A description of the techniques is given in Section 1.10.1.
f2: The conversions factors of 2,5 × 10^–3 and 6,5 × 10^–3 have been used for the determination of the lower and upper value of the BAT-AELs range (see Table 2), with some values being approximated. However, a-case-by-case conversion factor needs to be applied, depending on the type of glass produced (see Table 2).
f3: The BAT-AELs apply to batch formulations containing significant amounts of constituents meeting the criteria as dangerous substances, in accordance with Regulation (EC) No 1272/2008.