# Commission Implementing Decision (EU) 2017/2117 of 21 November 2017 establishing best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council, for the production of large volume organic chemicals (notified under document C(2017) 7469) (Text with EEA relevance), Division BAT 13:: In order to reduce emissions to air of NOX, CO, and SO2 from a thermal oxidiser, BAT is to use an appropriate combination of the techniques given below.

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

Technique
Description
Main pollutant targeted
Applicability
a.
Removal of high levels of NOX precursors from the process off-gas streams
Remove (if possible, for reuse) high levels of NOX precursors prior to thermal treatment, e.g. by scrubbing, condensation or adsorption
NOX
Generally applicable
b.
Choice of support fuel
See Section 12.3
NOX, SO2
Generally applicable
c.
Low-NOX burner (LNB)
See Section 12.1
NOX
Applicability to existing units may be restricted by design and/or operational constraints
d.
Regenerative thermal oxidiser (RTO)
See Section 12.1
NOX
Applicability to existing units may be restricted by design and/or operational constraints
e.
Combustion optimisation
Design and operational techniques used to maximise the removal of organic compounds, while minimising emissions to air of CO and NOX (e.g. by controlling combustion parameters such as temperature and residence time)
CO, NOX
Generally applicable
f.
Selective catalytic reduction (SCR)
See Section 12.1
NOX
Applicability to existing units may be restricted by space availability
g.
Selective non-catalytic reduction (SNCR)
See Section 12.1
NOX
Applicability to existing units may be restricted by the residence time needed for the reaction

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Source: https://www.legislation.gov.uk/eudn/2017/2117/annex/division/1/division/1.2/division/1.2.3/division/1.2.3.2/division/BAT (the official version)
Page: https://openlegislation.uk/eu-decision-2017-2117/annex/division-1/division-1.2/division-1.2.3/division-1.2.3.2/division-BAT
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.