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U.S. Department of Energy
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Desulfurization of carbonaceous materials

Patent ·
OSTI ID:6220658
Solid carbonaceous material, especially coal or coal char, is desulfurized by sequential treatment with steam, hydrogen, and steam. The partially desulfurized char from the first steam treatment zone is used to remove hydrogen sulfide from the effluent gas from the hydrogen treatment zone. Both the treated effluent gas and the spent char are recycled, thereby providing an efficient process for desulfurization.
Assignee:
Occidental Research Corp
Patent Number(s):
US 4270928
OSTI ID:
6220658
Country of Publication:
United States
Language:
English