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.
