Loading patent…
AssigneeTopsoe A/S
InventorsMårten Nils Rickard GRANROTH, Per Aggerholm SØRENSEN, James Bernard ROSENFELDT
Estimating the term…
A process and a process plant for conversion of SO2 to H2SO4 including a. directing a process gas stream including at least 15 vol % SO2, and an amount of O2 originating from a source of purified O2 or O2 enriched air to contact a first material catalytically active in oxidation of SO2 to SO3 under oxidation conditions involving a maximum steady state temperature of the catalytically active material above 700° C., to provide an oxidized process gas stream, wherein the material catalytically active in oxidation of SO2 to SO3 includes an active phase in which the weight ration of vanadium to other metals is at least 2:1 supported on a porous carrier comprising at least 25 wt % crystalline silica, b. absorbing at least an amount of the produced SO3 in a stream of lean sulfuric acid to provide a stream of liquid sulfuric acid.
A process for conversion of SO2 to H2SO4 comprising the steps of
A process plant for production of H2SO4 comprising a means for production of an O2 enriched stream having an O2 enriched stream outlet, an optional sulfur incinerator having at least one inlet and an outlet, a reactor containing a material catalytically active in SO2 oxidation at temperatures above 700° C. having an inlet and an outlet in fluid communication with the gas inlet of an absorber, having a liquid inlet for lean sulfuric acid, a liquid outlet for withdrawal of concentrated sulfuric acid and a gas outlet, wherein the O2 enriched stream outlet is in fluid communication with the inlet of the reactor, or if the optional sulfur incinerator is present, with an inlet to the sulfur incinerator, having the outlet in fluid communication with the inlet of the reactor.
Dependencies are inferred from the claim text.