# 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 51:: In order to reduce emissions of organic compounds to air from the desorption of CO2 from the scrubbing medium used in the EO plant, BAT is to use a combination of the techniques given below.

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

Technique
Description
Applicability
Process-integrated techniques
a.
Staged CO2 desorption
The technique consists of conducting the depressurisation necessary to liberate the carbon dioxide from the absorption medium in two steps rather than one. This allows an initial hydrocarbon-rich stream to be isolated for potential recirculation, leaving a relatively clean carbon dioxide stream for further treatment.
Only applicable to new plants or major plant upgrades
Abatement techniques
b.
Catalytic oxidiser
See Section 12.1
Generally applicable
c.
Thermal oxidiser
See Section 12.1
Generally applicable
Table 6.1
BAT-AEL for emissions of organic compounds to air from the desorption of CO2 from the scrubbing medium used in the EO plant
The BAT-AEL is expressed as an average of values obtained during 1 year.
In the case of significant methane content in the emission, methane monitored according to EN ISO 25140 or EN ISO 25139 is subtracted from the result.
EO produced is defined as the sum of EO produced for sale and as an intermediate.
Parameter
BAT-AEL
TVOC
1–10 g/t of EO produced
The associated monitoring is in BAT 2.

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Source: https://www.legislation.gov.uk/eudn/2017/2117/annex/division/6/division/6.2/division/BAT+51 (the official version)
Page: https://openlegislation.uk/eu-decision-2017-2117/annex/division-6/division-6.2/division-BAT+51
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.