Process for regenerating absorbent solutions used for removing g

Details Process for regenerating absorbent solutions used for removing g Process for regenerating absorbent solutions used for removing g

1974-02-19

1976-06-08

Sofer, Jack

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

55 36, 55 37, 55 38, 203 42, 203 96, 423223, 423226, 423227, 423229, 423232, 423236, 423242, 423243, C01B 1716, C01B 3120

Patent

active

039624048

ABSTRACT:
A process for regenerating absorbent solutions used for removing gaseous impurities such as CO.sub.2, H.sub.2 S,HCN, SO.sub.2 and other acidic gases from gaseous mixtures by stripping with steam, which comprises
A. dividing the solution to be regenerated into a principal and a secondary fraction (p and s) and regenerating these fractions separately from each other in a principal and a secondary regeneration column (P and S), the principal regeneration column being operated at a pressure of at least about 0.2 to 0.5 atm above the pressure of the secondary regeneration column,
B. regenerating the principal fraction in the principal regeneration column by heat which is fed from outside into the lower part of the column,
C. regenerating the secondary fraction in the secondary regeneration column by heat which has been removed from the regenerated solution leaving the principal regeneration column and
D. passing the regenerated fractions to the absorber.

REFERENCES:
patent: 2437288 (1948-03-01), Anderson
patent: 3532152 (1970-10-01), Cartinhour
patent: 3563695 (1971-02-01), Benson
patent: 3642430 (1972-02-01), Benson
patent: 3685960 (1972-08-01), Benson
patent: 3714327 (1973-01-01), Giammarco
patent: 3851041 (1974-11-01), Eichmeyer

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