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Division BAT 34

United Kingdom

Original text. Later amendments are not shown.

In order to prevent or reduce NOX emissions to air from the combustion units, BAT is to use one or a combination of the techniques given below.

Notes on Division

Footnotes

f1

BAT-AEL refers to combined emissions from the gas turbine and the supplementary firing recovery boiler, where present.

f2

For fuel with high H2 content (i.e. above 10 %), the upper end of the range is 75 mg/Nm3.

f3

For an existing unit using high air pre-heat (i.e. > 200 °C) or with H2 content in the fuel gas higher than 50 %, the upper end of the BAT-AEL range is 200 mg/Nm3.

f4

For existing units < 100 MW firing fuel oil with a nitrogen content higher than 0,5 % (w/w) or with liquid firing > 50 % or using air preheating, values up to 450 mg/Nm3 may occur.

f5

The lower end of the range can be achieved by using the SCR technique.