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:
Jun. 03, 2014
Filed:
Dec. 28, 2009
Koichi Yokoyama, Kure, JP;
Eiji Miyamoto, Kure, JP;
Hirofumi Kikkawa, Kure, JP;
Shigehito Takamoto, Kure, JP;
Toshio Katsube, Kure, JP;
Naoki Oda, Kure, JP;
Jun Shimamura, Kure, JP;
Masaharu Kuramoto, Kure, JP;
Koichi Yokoyama, Kure, JP;
Eiji Miyamoto, Kure, JP;
Hirofumi Kikkawa, Kure, JP;
Shigehito Takamoto, Kure, JP;
Toshio Katsube, Kure, JP;
Naoki Oda, Kure, JP;
Jun Shimamura, Kure, JP;
Masaharu Kuramoto, Kure, JP;
Babcock-Hitachi Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of recovering carbon dioxide, includes bringing gas to be processed containing carbon dioxide (CO) and oxygen into contact with the CO-absorbing solution in an absorption column to form a CO-rich solution; circulating the solution in a regeneration column to thermally release and recover COand recirculating the absorbing solution as a CO-poor solution inside the absorption column; and performing heat exchange between the solution being delivered from the absorption column to the regeneration column and the solution recirculated from the regeneration column to the absorption column, wherein an alkanolamine aqueous solution containing a silicone oil and/or an organosulfur compound is added to the solution inside the absorption column and/or the solution recirculated from the regeneration column to the absorption column to adjust the composition of the absorbing solution inside the absorption column.