The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2000
Filed:
Jun. 29, 1998
Hitomi Suzuki, Matsuyama, JP;
Tomio Mimura, Osaka, JP;
Toru Iwaki, Hiroshima, JP;
Shigeaki Mitsuoka, Hiroshima, JP;
Hiroshi Tanaka, Hiroshima, JP;
Masaki Iijima, Tokyo, JP;
The Kansai Electric Power Co., Inc., Osaka, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
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.