Process for the removal of H.sub.2 S and CO.sub.2 from gaseous s

Details Process for the removal of H.sub.2 S and CO.sub.2 from gaseous s Process for the removal of H.sub.2 S and CO.sub.2 from gaseous s

1975-08-29

1978-05-23

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423573G, 55 68, 55 73, B01D 5334

Patent

active

040910733

ABSTRACT:
A cyclic process for the simultaneous removal of hydrogen sulfide and carbon dioxide from a variety of gas streams is disclosed. The gas stream containing the sour gases is contacted with a solution of the Fe (III) chelate of N-(2-hydroxyethyl) ethylene diamine triacetic acid in a CO.sub.2 selective solvent. The hydrogen sulfide is converted to sulfur, the CO.sub.2 is absorbed to produce a purified gas stream, and the Fe (III) chelate is converted to the Fe (II) chelate. The process includes sulfur removal and simultaneous regeneration of the solvent and the Fe (III) chelate.

REFERENCES:
patent: 2926751 (1960-03-01), Kohl et al.
patent: 3226320 (1965-12-01), Meuly et al.
patent: 3347621 (1967-10-01), Papadopoulos et al.
patent: 3622273 (1971-11-01), Roberts et al.
patent: 3681015 (1972-08-01), Gelbein et al.

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