Method for the removal of carbon dioxide present in gases and ab

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

1998-06-29

2000-04-18

Anthony, Joseph D.

Compositions

Co, s, negative element, or acid, bindant containing

With absorbents

252189, 252184, 423228, 423229, C09K 300, B01D 5362

Patent

active

060511613

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 general formula ##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: 4393005 (1983-07-01), Patsch et al.
patent: 4567181 (1986-01-01), Maler et al.
patent: 4742068 (1988-05-01), Kukla
patent: 4766229 (1988-08-01), Kobayashi et al.
patent: 5102777 (1992-04-01), Lin et al.
patent: 5476597 (1995-12-01), Sakata et al.
patent: 5904908 (1999-05-01), Suzuki et al.

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