{
  "url": "https://openlegislation.uk/eu-decision-2017-2117/annex/division-1/division-1.2/division-1.2.3/division-1.2.3.1/division-BAT+8",
  "json_url": "https://openlegislation.uk/eu-decision-2017-2117/annex/division-1/division-1.2/division-1.2.3/division-1.2.3.1/division-BAT+8.json",
  "legislation": "eudn/2017/2117",
  "legislation_title": "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)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2017-2117",
  "path": "annex/division/1/division/1.2/division/1.2.3/division/1.2.3.1/division/BAT+8",
  "kind": "division",
  "number": "BAT 8:",
  "heading": "In order to reduce the load of pollutants sent to the final waste gas treatment, and to increase resource efficiency, BAT is to use an appropriate combination of the techniques given below for process off-gas streams.",
  "text": "Technique\nDescription\nApplicability\na.\nRecovery and use of excess or generated hydrogen\nRecovery and use of excess hydrogen or hydrogen generated from chemical reactions (e.g. for hydrogenation reactions). Recovery techniques such as pressure swing adsorption or membrane separation may be used to increase the hydrogen content\nApplicability may be restricted where the energy demand for recovery is excessive due to the low hydrogen content or when there is no demand for hydrogen\nb.\nRecovery and use of organic solvents and unreacted organic raw materials\nRecovery techniques such as compression, condensation, cryogenic condensation, membrane separation and adsorption may be used. The choice of technique may be influenced by safety considerations, e.g. presence of other substances or contaminants\nApplicability may be restricted where the energy demand for recovery is excessive due to the low organic content\nc.\nUse of spent air\nThe large volume of spent air from oxidation reactions is treated and used as low-purity nitrogen\nOnly applicable where there are available uses for low-purity nitrogen which do not compromise process safety\nd.\nRecovery of HCl by wet scrubbing for subsequent use\nGaseous HCl is absorbed in water using a wet scrubber, which may be followed by purification (e.g. using adsorption) and/or concentration (e.g. using distillation) (see Section 12.1 for the technique descriptions). The recovered HCl is then used (e.g. as acid or to produce chlorine)\nApplicability may be restricted in the case of low HCl loads\ne.\nRecovery of H2S by regenerative amine scrubbing for subsequent use\nRegenerative amine scrubbing is used for recovering H2S from process off-gas streams and from the acidic off-gases of sour water stripping units. H2S is then typically converted to elemental sulphur in a sulphur recovery unit in a refinery (Claus process).\nOnly applicable if a refinery is located nearby\nf.\nTechniques to reduce solids and/or liquids entrainment\nSee Section 12.1\nGenerally applicable",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2017/2117/annex/division/1/division/1.2/division/1.2.3/division/1.2.3.1/division/BAT+8",
    "retrieved_at": "2026-11-01T15:13:18.480772+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}