# 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 35

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 Sections 1.10.4 and 1.10.6.
Technique
Applicability
(i)
Selection of raw materials for the batch formulation with a low content of chlorine and fluorine
The technique is generally applicable within the constraints of the batch formulation and the availability of raw materials
(ii)
Minimisation of the fluorine content in the batch formulation
The minimisation of fluorine emissions from the melting process may be achieved as follows:
minimising/reducing the quantity of fluorine compounds (e.g. fluorspar) used in the batch formulation to the minimum commensurate with the quality of the final product. Fluorine compounds are used to optimise the melting process, help fiberisation and minimise filament breakage
substituting fluorine compounds with alternative materials (e.g. sulphates)
The substitution of fluorine compounds with alternative materials is limited by quality requirements of the product
(iii)
dry or semi-dry scrubbing, in combination with a filtration system
The technique is generally applicable
(iv)
wet scrubbing
The technique is generally applicable within technical constraints; i.e. need for a specific waste water treatment plant.
Table 25
BAT-AELs for HCl and HF emissions from the melting furnace in the continuous filament glass fibre sector
The conversion factor reported in Table 2 (4,5 × 10–3) has been applied.
The higher levels of the range are associated with the use of fluorine compounds in the batch formulation.
Parameter
BAT-AEL
mg/Nm3
kg/tonne melted glass
Hydrogen chloride, expressed as HCl
< 10
< 0,05
Hydrogen fluoride, expressed as HF
< 5 – 15
< 0,02 – 0,07

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Source: https://www.legislation.gov.uk/eudn/2012/134/annex/division/5/division/1.4/division/1.4.4/division/35 (the official version)
Page: https://openlegislation.uk/eu-decision-2012-134/annex/division-5/division-1.4/division-1.4.4/division-35
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.