Removal of oxalate ion from gas treating solutions

Details Removal of oxalate ion from gas treating solutions Removal of oxalate ion from gas treating solutions

1983-10-25

1984-11-27

Thomas, Earl C.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423226, C01B 1705, B01D 5334

Patent

active

044850824

ABSTRACT:
A process for removal of H.sub.2 S from gaseous streams is described, the process being characterized by division of the gaseous stream into major and minor portions, oxidation of the H.sub.2 S in the major portion with an oxidizing reactant solution comprising a polyvalent metal chelate or chelates of nitrilotriacetic acid, and utilization of the minor portion as a source of hydrogen ions to assist precipitation of ferrous oxalate from a bleed stream of the oxidizing reactant solution.

REFERENCES:
patent: 3068065 (1962-12-01), Hartley et al.
patent: 3226320 (1965-12-01), Meuly et al.
patent: 3933993 (1976-01-01), Salemme
patent: 4009251 (1977-02-01), Meuly
patent: 4091073 (1978-05-01), Winkler
patent: 4431616 (1984-02-01), Chou

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