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U.S. Department of Energy
Office of Scientific and Technical Information

Removal of hydrogen sulfide from reducing gases

Patent ·
OSTI ID:6775364
IGT's method of removing sulfur compounds from hot reducing fuel-gas streams requires no preliminary cooling and subsequent reheating of the gases. A melt of molten lead and a metal sulfide is contacted with the hot reducing gases to remove compounds such as hydrogen sulfide, carbonyl sulfide, and mercaptans. The lead and elemental sulfur are regenerated from the formed lead sulfide so that the lead can be recycled in excess amounts for subsequent reaction with the sulfur compounds in the hot reducing gases, while reducing the amount of formed metal sulfide slurry in the molten metal to obtain a pumpable mixture.
Assignee:
Inst. of Gas Technology
Patent Number(s):
US 3954938
OSTI ID:
6775364
Country of Publication:
United States
Language:
English