Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Sulfur or sulfur containing component
Patent
1978-12-05
1980-05-06
Vertiz, O. R.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Sulfur or sulfur containing component
423431, 423356, 423563, 423574L, C01B 1700, C01C 102, C01F 524, C01B 1716
Patent
active
042017548
ABSTRACT:
A method for converting calcium sulfoxy compounds selected from the group consisting of CaSO.sub.x and Ca(HSO.sub.x).sub.2 and their hydrates wherein x is 3 or 4 into calcium carbonate, the method consisting essentially of; converting the Ca(HSO.sub.x).sub.2 compounds into CaSO.sub.x compounds by reacting the Ca(HSO.sub.x).sub.2 compounds with calcium carbonate in the presence of water, thereafter reacting the CaSO.sub.x compounds with ammonia and carbon dioxide in the presence of water to produce NH.sub.4 (HSO.sub.x) wherein x is 3 or 4 and calcium carbonate, thereafter separating the NH.sub.4 (HSO.sub.x) and calcium carbonate and reacting the NH.sub.4 (HSO.sub.x) with carbon to produce ammonia, hydrogen sulfide and carbon oxides.
REFERENCES:
patent: 931515 (1909-08-01), Sprague
patent: 3775532 (1973-11-01), Shah
patent: 3846539 (1974-11-01), Renault et al.
patent: 3989809 (1976-11-01), Stauffer
Continental Oil Company
Heller Gregory A.
Mikesell, Jr. W. A.
Scott F. Lindsey
Vertiz O. R.
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