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US 5,350,431 AGranted
Process for chemical desulfurization of coal
AssigneeIdemitsu Kosan Co., Ltd.
InventorToru Yamashita
Life of this patent
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Abstract
A process for chemical desulfurization of coal, in which coal is brought into contact with a desulfurizing agent after or while the coal is irradiated with ultraviolet light, thereby to give remarkably high desulfurization ratios and remarkably high yields of low sulfur coal.
Claims19
A process for chemical desulfurization of coal, which comprises bringing coal into contact with a desulfurizing agent after or while the coal is irradiated with ultraviolet light for 1 minute to 10 hours.
Dependencies are inferred from the claim text.