Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon dioxide or hydrogen sulfide component
Patent
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.
Iijima Masaki
Iwaki Toru
Mimura Tomio
Mitsuoka Shigeaki
Suzuki Hitomi
DiMauro Peter
Lewis Michael
Mitsubishi Heavy Industries Ltd.
The Kansai Electric Power Co. Inc.
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