Division Table 19 BAT-associated emission levels for SO2 emissions to air when applying BAT 58

United Kingdom

The BAT-AEL for SO₂ emissions from the units concerned by BAT 58, expressed in mg/Nm³ as a monthly average value, is equal to or less than the weighted average of the SO₂ concentrations (expressed in mg/Nm³ as a monthly average) that would be achieved by applying in practice at each of those units techniques that would enable the units concerned to meet the following:

(a)

for catalytic cracking process (regenerator) units: the BAT-AEL ranges set out in Table 6 (BAT 26);
(b)

for combustion units burning refinery fuels alone or simultaneously with other fuels: the BAT-AEL ranges set out in Table 13 and in Table 14 (BAT 36); and
(c)

for waste gas sulphur recovery units: the BAT-AEPL ranges set out in Table 17 (BAT 54).

This BAT-AEL is expressed by the following formula:

\frac{Σ [(flue gas flow rate of the unit concerned) \times ({SO}_{2} concentration that would be achieved for that unit)]}{Σ (flue gas flow rate of all units concerned)}