Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon dioxide or hydrogen sulfide component
Patent
1971-03-15
1981-06-02
Thomas, Earl G.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Carbon dioxide or hydrogen sulfide component
423228, 423229, 423232, B01D 5334
Patent
active
042711320
ABSTRACT:
The invention relates to an absorption desorption composition and process employing said composition for selectively removing acidic gases, particularly carbon dioxide (CO.sub.2) and hydrogen sulphide (H.sub.2 S) from gaseous mixtures, said composition comprising an aqueous solution containing a major proportion of alkali metal salts, potassium carbonate and potassium borate, a minor proportion of a catalytic activator, and a corrosion inhibitor when required, with provision for maintaining the inhibitor in an effective condition and in condition to perform its corrosion reducing function; the process characterized by two stages of absorption and desorption connected in a circulating system for the fluids being processed with suitable temperature and pressure controls, whereby an increased amount of the contaminating gases are removed and corrosive and side reaction difficulties reduced to a minimum.
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American Chemical Society Monograph No.72, (1936), pp. 162-164.
Ellis, "Correlation of Absorption Rates of Carbon Dioxide by Alkaline and Amine Solutions in Packed Columns", Trans. Instn. Chem. Engrs., vol. 38, 1960, pp. 216-224.
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