Loading patent…
AssigneeHaldor TopsøE A/S
InventorsMorten THELLEFSEN, Martin MØLLERHØJ, Mads LYKKE
Estimating the term…
A process and a process plant for production of elemental sulfur from a feedstock gas including from 15 vol % to 100 vol % H2S and a stream of sulfuric acid, the process including a) providing a Claus reaction furnace feed stream with a substoichiometric amount of oxygen, b) directing s to a reaction furnace operating at elevated temperature, c) cooling, d) directing to contact a material catalytically active in the Claus reaction, e) withdrawing a Claus tail gas and elemental sulfur, f) directing to a means for sulfur oxidation, g) directing to contact a material catalytically active in SO2 oxidation to SO3, h) converting to concentrated sulfuric acid, i) recycling to the Claus reaction furnace, wherein an amount of combustibles, in the Claus tail gas, is oxidized in the presence of a material catalytically active in sulfur oxidation, at an inlet temperature below 400° C.
A process for production of elemental sulfur from a feedstock gas comprising from 15 vol %, to 100 vol % H2S and a stream of sulfuric acid, the process comprising
A process plant comprising a Claus reaction furnace, a Claus waste heat boiler, a Claus conversion section, a means for sulfur oxidation and a sulfuric acid section, wherein the Claus reaction furnace has a feedstock inlet a sulfuric acid inlet and an outlet, the Claus waste heat boiler has a gas inlet, a gas outlet and an elemental sulfur outlet, the Claus conversion section has a gas inlet, a gas outlet and an elemental sulfur outlet, the means for sulfur oxidation comprises a material catalytically active in sulfur oxidation and has an inlet and an outlet and the sulfuric acid section has a gas inlet, a gas outlet and a sulfuric acid outlet, and wherein the feedstock inlet of the reaction furnace is configured for receiving a feedstock gas and an oxidant, wherein the outlet the Claus reaction furnace is configured for being in fluid communication with the gas inlet of the Claus waste heat boiler, wherein the gas outlet the Claus waste heat boiler is configured for being in fluid communication with the gas inlet of the Claus conversion section, wherein the inlet of the means for sulfur oxidation is configured for being in fluid connection with the gas outlet of said Claus conversion section gas, and wherein the outlet of the means for sulfur oxidation is configured for being in fluid connection with the gas inlet of the sulfuric acid section, wherein the sulfuric acid outlet of the sulfuric acid section is in fluid connection with the sulfuric acid inlet of said Claus reaction furnace.
Dependencies are inferred from the claim text.