SO₃ PRODUCTION (SO-2)

The sulphur, from the liquid sulphur storage or from the melting tank, is filtered and metered to the combustion furnace together with the proper amount of dry air.

For complete combustion the furnace holds piles of refractary bricks to offer a large contact surface between the liquid sulphur and the process air for complete and controlled combustion.

Subsequently, the SO₂/air mixture is sent to the converter, where SO₂/SO₃ conversion takes place. The Vanadium Pentoxide catalyst assists to achieve a yield up to 98,5 %. The final SO₃/air mixture is cooled and then diluted with dry air to the SO₃ concentration specified for the individual organic raw material to be sulph(on)ated.