Method for the removal of carbon dioxide present in gases

Details Method for the removal of carbon dioxide present in gases Method for the removal of carbon dioxide present in gases

1997-03-13

1999-05-18

Lewis, Michael

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423229, 95236, B01D53/62

Patent

active

059049081

ABSTRACT:
This invention provides a method for the removal of carbon dioxide present in gases which comprises bringing a CO.sub.2 -containing gas into contact with an aqueous solution containing at least one amine compound of the ##STR1## wherein R.sup.1 to R.sup.8 may be the same or different and each represent a hydrogen atom or an alkyl group of 1 to 4 carbon atoms, and m is 0 or 1. The method of the present invention makes it possible to remove carbon dioxide efficiently. In particular, since carbon dioxide can be easily desorbed by heating the aqueous solution having absorbed carbon dioxide, the thermal energy required for regeneration of the aqueous solution can be reduced.

REFERENCES:
patent: 3653804 (1972-04-01), Wehner et al.
patent: 4094957 (1978-06-01), Sartori et al.
patent: 4364915 (1982-12-01), Proctor et al.
patent: 4892674 (1990-01-01), Ho et al.

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