Process for condensation of sulphuric acid vapours to produce sulphuric acid
AssigneeHaldor Topsoe A/S
InventorsKurt Agerbæk Christensen, Peter Schoubye
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Abstract
A process for production of sulphuric acid comprising condensing sulphuric acid vapour from a gas mixture containing 0.01 to 10 vol. % of H2SO4 vapour calculated at complete hydration of SO3 in the gas to H2SO4 and 0 to 50 vol. % of water vapour by cooling of the gas in a sulphuric acid tower, wherein a stream containing NH3 is added upstream of the tower in an amount corresponding to 0.01-100 ppm NH3 by vol. in the gas stream at the entry of the tower.
Claims8
A process for production of sulphuric acid comprising condensing sulphuric acid vapour from a gas mixture containing 0.01 to 10 vol. % of H2SO4 vapour calculated at complete hydration of SO3 in the gas to H2SO4 and 0 to 50 vol. % of water vapour by cooling of the gas in a sulphuric acid tower, wherein a stream containing NH3 is added to a gas stream entering the tower in an amount corresponding to 0.01-100 ppm NH3 by vol. of the gas stream entering the tower.
Dependencies are inferred from the claim text.