# 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 iron and steel production (notified under document C(2012) 903) (Text with EEA relevance) (2012/135/EU), Division 49

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

BAT for the coke oven underfiring is to reduce the emissions by using the following techniques:
I.. preventing leakage between the oven chamber and the heating chamber by means of regular coke oven operation
II.. repairing leakage between the oven chamber and the heating chamber (only applicable to existing plants)
III.. incorporating low-nitrogen oxides (NOX) techniques in the construction of new batteries, such as staged combustion and the use of thinner bricks and refractory with a better thermal conductivity (only applicable to new plants)
IV.. using desulphurised coke oven gas (COG) process gases.
The BAT-associated emission levels, determined as daily mean values and relating to an oxygen content of 5 % are:
sulphur oxides (SOX), expressed as sulphur dioxide (SO2) < 200 – 500 mg/Nm3
dust < 1 – 20 mg/Nm3
nitrogen oxides (NOX), expressed as nitrogen dioxide (NO2) < 350 – 500 mg/Nm3 for new or substantially revamped plants (less than 10 years old) and 500 – 650 mg/Nm3 for older plants with well maintained batteries and incorporated low- nitrogen oxides (NOX) techniques.

---
Source: https://www.legislation.gov.uk/eudn/2012/135/annex/division/3/division/1.4/division/1/division/49 (the official version)
Page: https://openlegislation.uk/eu-decision-2012-135/annex/division-3/division-1.4/division-1/division-49
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.