Design of energy-saving carbon dioxide separation process using fluidized bed. (5th November 2017)

• Record Type: Journal Article
• Authors: Kansha, Yasuki; Ishizuka, Masanori; Mizuno, Hiroyuki; Tsutsumi, Atsushi
• Is Part Of: Applied thermal engineering. Volume 126(2017)
• Page Start: 134
• Page End: 138
• Publication Date: 2017-11-05
• Subjects: CO2 capture -- Energy saving -- Process design -- Exergy; Heat engineering -- Periodicals; Heating -- Equipment and supplies -- Periodicals; Periodicals; 621.40205
• DOI: 10.1016/j.applthermaleng.2017.07.156
• Languages: English
• ISSNs: 1359-4311

Abstract

Highlights: An energy-saving CO2 separation process is proposed. Energy-saving and separation performance are examined. New process design has energy-saving potential for CO2 capture. Abstract: Carbon dioxide capture and storage technology has attracted recent attention for the mitigation of CO2 emissions; however, to facilitate its commercial implementation, its capture cost should be further decreased. This research proposes an innovative energy-saving process using chemical absorption by a solid in a circulating fluidized bed. In this process, the reaction heat that accompanies absorption is successfully supplied through a heat pump to achieve thermal decomposition in a regenerator, thereby leading to recirculation of all process heat. Absorption and fluidization experiments were conducted to determine the separation performance. An energy balance of the proposed process was simulated using the experimental data with a commercial process simulator. The simulation results indicate that the proposed CO2 separation process has large energy-saving potential when compared with conventional approaches.