Selective recovery of carbon dioxide

Details Selective recovery of carbon dioxide Selective recovery of carbon dioxide

1986-05-05

1987-12-01

Doll, John

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423 6, C01B 1716, C01B 3120

Patent

active

047103620

ABSTRACT:
Carbon dioxide is selectively removed from an acid gas stream containing carbon dioxide and sulfur-containing components including hydrogen sulfide by counter-currently contacting the acid gas stream with an aqueous solution of a treating agent in order to selectively absorb carbon dioxide from the gas stream, the treating agent being an aqueous solution of a polyoxypropylene triamine having the formula: ##STR1## wherein R' represents a methylene group and R" represents hydrogen or methyl or ethyl and wherein the sum of x+y+z is a positive integer having a value of from about 4 to about 6.

REFERENCES:
patent: 4344863 (1982-08-01), Robbins et al.
patent: 4362856 (1982-12-01), Kluger
patent: 4392866 (1983-07-01), Sung et al.
patent: 4392867 (1983-07-01), Sung et al.
patent: 4436891 (1984-03-01), Umeda et al.

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