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US 12,545,580 B2Granted
Method for production of elemental sulfur and sulfuric acid
AssigneeHaldor TopsøE A/S
InventorsMorten Thellefsen, Mads Lykke
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AssigneeHaldor TopsøE A/S
InventorsMorten Thellefsen, Mads Lykke
Estimating the term…
A process for production of elemental sulfur from a feedstock gas including from 15% to 100 vol % H2S and a stream of sulfuric acid, the process including: a) providing a Claus reaction furnace feed stream substoichiometric oxygen with respect to the Claus reaction, b) directing to a reaction furnace zone operating at elevated temperature such as above 900° C., c) directing to a sulfuric acid evaporation zone downstream said reaction furnace zone, d) cooling to provide a cooled Claus converter feed gas, e) directing to contact a material catalytically active in the Claus reaction, f) withdrawing a Claus tail gas and elemental sulfur, g) directing to a Claus tail gas treatment plant, with the associated benefit of a process involving injection of sulfuric acid in a sulfuric acid evaporation zone allowing high temperature combustion of said feedstock gas, including impurities, without cooling from evaporation and decomposition of sulfuric acid.
A process for production of elemental sulfur from a feedstock gas comprising from 15% to 100 vol % H2S and a stream of sulfuric acid, the process comprising
A process plant comprising a reaction furnace zone, a sulfuric acid evaporation zone, a Claus waste heat boiler, a Claus conversion section, a means for sulfur oxidation and a sulfuric acid section,
Dependencies are inferred from the claim text.