Flue gas desulfurization sorbent and process
AssigneeExxon Research & Engineering Co.
InventorNeville L. Cull
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Abstract
Sulfur dioxide is removed from flue gases by contacting the flue gas at elevated temperature with a sorbent comprising a shaped refractory substrate of low surface area and an adherent oxide film impregnated with a transition metal or metal oxide which is selective for the removal of sulfur oxide from gas mixtures on the external surface of the substrate. A technique for laying down the adherent oxide film on the refractory substrate is also disclosed.
Claims14
In a process wherein sulfur dioxide is separated from a gaseous mixture containing the same by contacting said gaseous mixture, under desulfurization conditions, with a solid sorbent comprising a carrier and an active material supported thereon, which active material will selectively react with sulfur dioxide at the desulfurization conditions employed, the improvement wherein said carrier comprises a low surface area substrate coated with an adherent refractory oxide film.
Dependencies are inferred from the claim text.