# 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 33

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

BAT is to reduce NOX emissions from the melting furnace by using one or a combination of the following techniques:
A description of the techniques is given in Section 1.10.2.
Technique
Applicability
(i) Combustion modifications
(a)
Reduction of air/fuel ratio
Applicable to air/fuel conventional furnaces.
Full benefits are achieved at normal or complete furnace rebuild, when combined with optimum furnace design and geometry
(b)
Reduced combustion air temperature
Applicable to air/fuel conventional furnaces within the constraints of the furnace energy efficiency and higher fuel demand. Most furnaces are already of the recuperative type.
(c)
Staged combustion:
(d) Air staging
(e) Fuel staging
Fuel staging is applicable to most air/fuel, oxy-fuel furnaces.
Air staging has very limited applicability due to its technical complexity
(d)
Flue-gas recirculation
The applicability of this technique is limited to the use of special burners with automatic recirculation of the waste gas
(e)
Low-NOX burners
The technique is generally applicable.
Full benefits are achieved at normal or complete furnace rebuild, when combined with optimum furnace design and geometry
(f)
Fuel choice
The applicability is limited by the constraints associated with the availability of different types of fuel, which may be impacted by the energy policy of the Member State
(ii)
Oxy-fuel melting
The maximum environmental benefits are achieved for applications at the time of a complete furnace rebuild
Table 23
BAT-AELs for NOX 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 achievable levels depend on the quality of the natural gas and oxygen available (nitrogen content).
Parameter
BAT
BAT-AEL
mg/Nm3
kg/tonne melted glass
NOX expressed as NO2
Combustion modifications
< 600 – 1 000
< 2,7 – 4,5
Oxy-fuel melting
Not applicable
< 0,5 – 1,5

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Source: https://www.legislation.gov.uk/eudn/2012/134/annex/division/5/division/1.4/division/1.4.2/division/33 (the official version)
Page: https://openlegislation.uk/eu-decision-2012-134/annex/division-5/division-1.4/division-1.4.2/division-33
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.