Division 20

United Kingdom

BAT is to reduce HCl and HF emissions from the melting furnace (possibly combined with flue-gases from hot-end coating activities) by using one or a combination of the following techniques:

Technique^f1	Applicability
A description of the techniques is given in Section 1.10.4.
(i) Selection of raw materials for the batch formulation with a low content of chlorine and fluorine	The applicability may be limited by the constraints of the type of glass produced at the installation and the availability of raw materials
(ii) Dry or semi-dry scrubbing, in combination with a filtration system	The technique is generally applicable

Table 10

BAT-AELs for HCl and HF emissions from the melting furnace in the container glass sector

Parameter	BAT-AEL
The conversion factor for general cases, reported in Table 2 (1,5 × 10^–3) has been applied.
The higher levels are associated with the simultaneous treatment of flue-gases from hot-end coating operations.
Parameter	mg/Nm³	kg/tonne melted glass^f2
Hydrogen chloride, expressed as HCl^f3	< 10 – 20	< 0,02 – 0,03
Hydrogen fluoride, expressed as HF	< 1 – 5	< 0,001 – 0,008

Annotations

Footnotes

f1: A description of the techniques is given in Section 1.10.4.
f2: The conversion factor for general cases, reported in Table 2 (1,5 × 10^–3) has been applied.
f3: The higher levels are associated with the simultaneous treatment of flue-gases from hot-end coating operations.