Temperature moderation of an oxygen enriched claus sulfur plant using an ejector
AssigneesGAA Engineered Systems, Inc., Air Products and Chemicals, Inc.
InventorElmo Nasato
Life of this patent
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Abstract
A process is set forth for improving an oxygen-enriched Claus plant by recycling through an ejector effluent from the first condenser back to the reaction furnace to moderate oxygen induced high temperatures and thus allow additional oxygen-enrichment and attendant throughput in the Claus plant.
Claims12
In a process for recovering sulfur from a feed gas stream rich in hydrogen sulfide wherein the gas stream is partially combusted with an oxygen-enriched gas in a Claus reaction furnace zone, the combustion effluent is cooled with the attendant condensation and separation of sulfur in a first condensation zone and the remaining effluent stream is passed through at least one stage of reheating, conversion in a catalytic Claus reaction zone and cooling with attendant condensation and separation of sulfur in an additional condensation zone, and recycling a portion of the combustion effluent to the reaction furnace zone in order to moderate the temperature of the reaction furnace zone, the improvement comprising performing the recycle with the motive power of a high pressure stream in an ejector where the recycle stream is the suction stream to the ejector.
Dependencies are inferred from the claim text.