Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon dioxide or hydrogen sulfide component
Patent
1975-09-29
1977-12-06
Thomas, Earl C.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Carbon dioxide or hydrogen sulfide component
423223, 423226, 423229, 423232, B01D 5334
Patent
active
040617149
ABSTRACT:
A process for separating acid gases from gaseous mixtures by absorption in alkaline solutions such as potassium carbonate solution wherin corrosion caused by the absorbing solution is reduced by inclusion therein of an aromatic compound. The aromatic compound has at least one nitro group and at least one hydroxyl group substituted in the same benzene nucleus. The invention is particularly applicable when the absorbent is a potassium carbonate solution activated by arsenic ions.
REFERENCES:
patent: 1719726 (1929-07-01), Gollman
patent: 3099535 (1963-07-01), Maezawa et al.
Imperial Chemical Industries Limited
Thomas Earl C.
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