rb bertomeu, S.L.

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E-22520 Fraga, Huesca (Spain)

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TECHNICAL BULLETIN

n. 18    

CALCULATION OF THEORETICAL SO2 LEVELS TO BE EMITTED IN COMBUSTION GASES BASED ON THE SULPHUR CONTENT OF THE FUEL

Environmental legislation imposes restrictions, to increasingly lower values, on SO2 emissions in combustion gases from industrial installations using any type of fuel, to reduce the effect of acid rain that these emissions cause.

In parallel with this, government authorities impose limits on the content of sulphur in fuels, especially fuel oil, for use in small and medium-sized combustion installations that are not normally equipped with units to scrub the combustion gases emitted into the atmosphere.

The European Union currently sets the limit on these emissions at 1,700 mg/Nm3 of dry gases, referenced to an oxygen content of 3 %. Equally, and in stechiometric consonance with this value, it is prohibited to use a fuel with over 1% sulphur, except where it can be demonstrated that the combustion installation has scrubbing systems that safeguard this maximum value for emissions of SO2.

It is often useful to be able to produce an a priori calculation of the theoretical content in SO2 in the gases emitted, based on the content of sulphur in the fuel. By way of an example, the calculation is worked through for fuel oil and Diesel fuel, based on typical breakdowns of composition, in a combustion installation. The calculation, which assumes that all the sulphur in the fuel is oxidised to SO2 and is expelled with the combustion gases, is applicable to any other type of fuel.

To access the calculation methodes, consult the following documents compiled by rb bertomeu (by clicking on the chosen title):

 

 

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