Recovery of carbon dioxide from combustion exhaust gas

• Main Authors: HOTTA, YOSHITSUGU, KARASAKI, MUTSUNORI, YOSHIDA, KUNIHIKO, FUJII, MASUMI, SHIMOJO, SHIGERU, MITSUOKA SHIGEAKI, SUDA, TAIICHIRO, KOBAYASHI KENJI, IIJIMA, MASAKI, SETO, TOORU
• Format: Patent
• Language: English; French; German
• Published: 22.07.2009
• Subjects: CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSEGASES [GHG]; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

A method for recovering carbon dioxide gas present in combustion exhaust gas. More specifically, the present invention solves problems associated with the absorption of carbon dioxide from combustion exhaust gas using a monoethanolamine solution. First, with the provision of storage units for the monoethanolamine solution which has absorbed carbon dioxide and for the monoethanolamine solution which has been regenerated, variations in power demand at power generation facilities are utilized effectively. Also, provided is a method of recovering carbon dioxide wherein a monoethanolamine solution is made inflammable. Further, the optimization of exhaust gas from which carbon dioxide is recovered is achieved.