# Commission Implementing Decision of 28 February 2012 establishing the best available techniques (BAT) conclusions under Directive 2010/75/EU of the European Parliament and of the Council on industrial emissions for the manufacture of glass (notified under document C(2012) 865) (Text with EEA relevance) (2012/134/EU), Division 52

Extent: E+W+S+N.I.

BAT is to reduce HCl and HF emissions from the melting furnace by using one or a combination of the following techniques:
A description of the techniques is given in Section 1.10.4.
Technique
Applicability
(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 batch formulation for the type of glass produced at the installation and the availability of raw materials
(ii)
Minimisation of the fluorine and/or chlorine compounds in the batch formulation and optimisation of the fluorine and/or chlorine mass balance
Fluorine compounds are used to confer particular characteristics to special glasses (i.e. opaque lighting glass, optical glass).
Chlorine compounds may be used as fining agents for borosilicate glass production
The technique is generally applicable within the constraints of the quality requirements for the final product.
(iii)
Dry or semi-dry scrubbing, in combination with a filtration system
The technique is generally applicable
Table 42
BAT-AELs for HCl and HF emissions from the melting furnace in the special glass sector
The conversion factor of 2,5 × 10–3 (see Table 2) has been used; with some values being approximated. A case-by-case conversion factor may have to be applied based on the type of production.
The higher levels are associated with the use of materials containing chlorine in the batch formulation.
The upper value of the range has been derived from specific reported data.
Parameter
BAT-AEL
mg/Nm3
kg/tonne melted glass
Hydrogen chloride, expressed as HCl
< 10 – 20
< 0,03 – 0,05
Hydrogen fluoride, expressed as HF
< 1 – 5
< 0,003 – 0,04

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Source: https://www.legislation.gov.uk/eudn/2012/134/annex/division/5/division/1.6/division/1.6.4/division/52 (the official version)
Page: https://openlegislation.uk/eu-decision-2012-134/annex/division-5/division-1.6/division-1.6.4/division-52
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.