# Commission Implementing Decision of 26 September 2014 establishing the best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council, for the production of pulp, paper and board (notified under document C(2014) 6750) (Text with EEA relevance) (2014/687/EU), Division BAT 36: In order to reduce NOx emissions from a recovery boiler, BAT is to use an optimised firing system including one or a combination of the techniques given below.

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

Technique
Description
Applicability
a
Optimising the recovery boiler by controlling the firing conditions
See Section 1.7.1.2
Generally applicable
b
Staged injection of spent liquor
Applicable to new large recovery boilers and major recovery boilers refurbishments
c
Selective non-catalytic reduction (SNCR)
Retrofitting of existing recovery boilers may be limited due to scaling problems and associated increased cleaning and maintenance requirements. For ammonium-based mills, no application was reported; but due to specific conditions in the waste gas, SNCR is expected to be without effect. Not applicable to sodium-based mills due to explosion risk

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Source: https://www.legislation.gov.uk/eudn/2014/687/annex/division/9/division/1.3/division/1.3.2/division/bat+36 (the official version)
Page: https://openlegislation.uk/eu-decision-2014-687/annex/division-9/division-1.3/division-1.3.2/division-bat+36
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.