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AssigneeInstitut Francais du Petrole
InventorsEtienne Lebas, Gérard Martin, Christian Streicher
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Process and device for regeneration of a used absorbent from a desulfurization zone or from the desulfurization of a gas containing sulfur oxides, comprising regeneration simultaneously with filtering of the absorbent, in a reducing atmosphere, wherein partial combustion of a regeneration gas is also carried out upstream from regeneration, the products of the partial combustion being mixed with the used absorbent prior to the regeneration-filtration stage. The absorbent may be, e.g., solid absorbents based on magnesium oxide. The regeneration gas may be hydrogen sulfide and/or a hydrocarbon. For example, H2S can be partially combusted and the products of the partial combustion, including H2S, H2, SO2 and sulfur, mixed with the used absorbent prior to the regeneration-filtration stage.
A regeneration device for regeneration of a used absorbent including a catalyst from a thermal desulfurization zone, comprising a regeneration means working in a reducing atmosphere by contacting a regeneration gas with the used absorbent, said regeneration means comprising filtering elements, an inlet for the used absorbent, an outlet for the gases, and an outlet for the regenerated absorbent, a means for partial combustion of a gas to provide the regeneration gas and a means for mixing the regeneration gas with the used absorbent, arranged upstream from the filtering elements of said regeneration means, and a means for fractionating the used absorbent, arranged upstream of the means for mixing, into at least two fractions, some of said fractions being rich in catalyst, the other being poor in catalyst, wherein said means for mixing mixes the regeneration gas with the other fraction poor in catalyst.
A regeneration device for regeneration of a used absorbent including a catalyst from a thermal desulfurization zone, comprising:
Dependencies are inferred from the claim text.