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:
Feb. 04, 2025
Filed:
May. 26, 2020
Tokuyama Corporation, Shunan, JP;
Masao Kusunoki, Shunan, JP;
Hiroki Tanaka, Shunan, JP;
Yoshimi Tamaki, Shunan, JP;
Dai Tsunoda, Shunan, JP;
TOKUYAMA CORPORATION, Shunan, JP;
Abstract
The present invention provides a method including: a gas absorption step of bringing exhaust gas into contact with an aqueous solution containing alkaline carbonate, so that carbon dioxide gas in the exhaust gas is allowed to react therewith, thereby obtaining an aqueous solution containing alkaline bicarbonate; a gas recovery step of recovering a gas containing nitrogen gas and oxygen gas obtained as a result of the gas absorption step; a decomposition step of decomposing at least a part of the alkaline bicarbonate obtained in the gas absorption step into the alkaline carbonate and the carbon dioxide gas; a circulation step of circulating at least a part of the alkaline carbonate obtained in the decomposition step to the gas absorption step; and a carbon dioxide gas recovery step of bringing a gas containing the carbon dioxide gas obtained as a result of the decomposition step into contact with an aqueous solution, thereby recovering the carbon dioxide gas obtained in the decomposition step.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile