Importance

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Abstract

A sour gas stream is sub-stoichiometrically combusted to produce soot and a sour syngas stream. At least 10% of the carbon in the sour gas stream is converted into the soot. At least a portion of the hydrogen sulfide of the sour syngas stream is reacted with sulfur dioxide to produce a syngas stream comprising the carbon dioxide, the carbon monoxide, the hydrogen, water, elemental sulfur vapor, a residual portion of the hydrogen sulfide, and a residual portion of the sulfur dioxide. The syngas stream is reacted with steam to produce a shifted sour gas stream including more carbon dioxide, more hydrogen, more hydrogen sulfide, and less carbon monoxide in comparison to the syngas stream. Water and hydrogen sulfide is separated from the shifted sour gas stream to produce a sweet gas stream. The sweet gas stream is separated into a hydrogen product stream and an exhaust stream.

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First Claim