Division BAT 13: In order to reduce emissions to air of NOX, CO, and SO2 from a thermal oxidiser, BAT is to use an appropriate combination of the techniques given below.
United Kingdom
| Technique | Description | Main pollutant targeted | Applicability | |
|---|---|---|---|---|
| a. | Removal of high levels of NOX precursors from the process off-gas streams | Remove (if possible, for reuse) high levels of NOX precursors prior to thermal treatment, e.g. by scrubbing, condensation or adsorption | NOX | Generally applicable |
| b. | Choice of support fuel | See Section 12.3 | NOX, SO2 | Generally applicable |
| c. | Low-NOX burner (LNB) | See Section 12.1 | NOX | Applicability to existing units may be restricted by design and/or operational constraints |
| d. | Regenerative thermal oxidiser (RTO) | See Section 12.1 | NOX | Applicability to existing units may be restricted by design and/or operational constraints |
| e. | Combustion optimisation | Design and operational techniques used to maximise the removal of organic compounds, while minimising emissions to air of CO and NOX (e.g. by controlling combustion parameters such as temperature and residence time) | CO, NOX | Generally applicable |
| f. | Selective catalytic reduction (SCR) | See Section 12.1 | NOX | Applicability to existing units may be restricted by space availability |
| g. | Selective non-catalytic reduction (SNCR) | See Section 12.1 | NOX | Applicability to existing units may be restricted by the residence time needed for the reaction |