{
  "url": "https://openlegislation.uk/eu-decision-2017-1442/annex/division-7/division-7.1.2/division-1",
  "json_url": "https://openlegislation.uk/eu-decision-2017-1442/annex/division-7/division-7.1.2/division-1.json",
  "legislation": "eudn/2017/1442",
  "legislation_title": "Commission Implementing Decision (EU) 2017/1442 of 31 July 2017 establishing best available techniques (BAT) conclusions, under Directive 2010/75/EU of the European Parliament and of the Council, for large combustion plants (notified under document C(2017) 5225) (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2017-1442",
  "path": "annex/division/7/division/7.1.2/division/1",
  "kind": "division",
  "number": "BAT 73",
  "heading": "In order to prevent and/or reduce NOX emissions to air while limiting CO emissions to air from IGCC plants, BAT is to use one or a combination of the techniques given below.",
  "text": "Technique\nDescription\nApplicability\na.\nCombustion optimisation\nSee description in Section 8.3\nGenerally applicable\nb.\nWater/steam addition\nSee description in Section 8.3.\nSome intermediate-pressure steam from the steam turbine is reused for this purpose\nOnly applicable to the gas turbine part of the IGCC plant.\nThe applicability may be limited due to water availability\nc.\nDry low-NOX burners (DLN)\nSee description in Section 8.3\nOnly applicable to the gas turbine part of the IGCC plant.\nGenerally applicable to new IGCC plants.\nApplicable on a case-by-case basis for existing IGCC plants, depending on the availability of a retrofit package. Not applicable for syngas with a hydrogen content of > 15 %\nd.\nSyngas dilution with waste nitrogen from the air supply unit (ASU)\nThe ASU separates the oxygen from the nitrogen in the air, in order to supply high-quality oxygen to the gasifier. The waste nitrogen from the ASU is reused to reduce the combustion temperature in the gas turbine, by being premixed with the syngas before combustion\nOnly applicable when an ASU is used for the gasification process\ne.\nSelective catalytic reduction (SCR)\nSee description in Section 8.3\nNot applicable to IGCC plants operated < 500 h/yr.\nRetrofitting existing IGCC plants may be constrained by the availability of sufficient space.\nThere may be technical and economic restrictions for retrofitting existing IGCC plants operated between 500 h/yr and 1 500 h/yr\nTable 43\nBAT-associated emission levels (BAT-AELs) for NOX emissions to air from IGCC plants\nIGCC plant total rated thermal input(MWth)\nBAT-AELs (mg/Nm3)\nYearly average\nDaily average or average over the sampling period\nNew plant\nExisting plant\nNew plant\nExisting plant\n≥ 100\n10–25\n12–45\n1–35\n1–60\nAs an indication, the yearly average CO emission levels for existing plants operated ≥ 1 500 h/yr and for new plants will generally be < 5–30 mg/Nm3.",
  "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/2017/1442/annex/division/7/division/7.1.2/division/1",
    "retrieved_at": "2026-11-01T15:13:23.628050+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."
}