Method for improving the long-term stability of H.sub.2 S absorp

Details Method for improving the long-term stability of H.sub.2 S absorp Method for improving the long-term stability of H.sub.2 S absorp

1988-09-12

1990-01-09

Heller, Gregory A.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

4232451, 423574R, 4235764, 4235766, 4235767, C01B 1702

Patent

active

048927236

ABSTRACT:
The long term stability of process solutions used in H.sub.2 S-to-sulfur absorption/oxidation process, wherein the incoming hydrogen sulfide-containing gas stream is contaminated with hydrocarbons and/or organic oxygenated compounds and the process is generating an excessive amount of thiosulfate in the process solution, is improved by a method comprising contacting the gas stream and/or the process solution with charcoal to remove both the contamination and at least a portion of the thiosulfate therefrom.

REFERENCES:
patent: 3736726 (1973-06-01), Grimm et al.
patent: 3810833 (1974-05-01), Nicklin
patent: 4385044 (1983-05-01), Wolcott
patent: 4427630 (1984-01-01), Aibe et al.
patent: 4595575 (1986-06-01), Oeste et al.

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