High temperature regenerable hydrogen sulfide removal agents

Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Waste gas purifier

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422177, 422170, 422139, 422216, B01D 5302

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active

052719073

ABSTRACT:
A system for high temperature desulfurization of coal-derived gases using regenerable sorbents. One sorbent is stannic oxide (tin oxide, SnO.sub.2), the other sorbent is a metal oxide or mixed metal oxide such as zinc ferrite (ZnFe.sub.2 O.sub.4). Certain otherwise undesirable by-products, including hydrogen sulfide (H.sub.2 S) and sulfur dioxide (SO.sub.2) are reused by the system, and elemental sulfur is produced in the regeneration reaction. A system for refabricating the sorbent pellets is also described.

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Nielsen, et al., Steam Regenerable Sulfur Absorption Masses and Their Application in IGCC Plants Oct. 1991 (All).

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