Effect of support material on the performance of K2CO3-based pellets for cyclic CO2 capture

Changlei Qin, Junjun Yin, Jingyu Ran, Li Zhang and Bo Feng

Applied Energy, 2014, vol. 136, issue C, 280-288

Abstract: The K2CO3-based sorbent is promising for CO2 capture from the flue gas of fossil-fuel-fired power plant. In this work, various support/binder materials were utilized to prepare K2CO3-based sorbent pellets by an extrusion method, and their mechanical strength and CO2 capture performance were studied with different techniques. Results show that both the type of support/binder used and the content of K2CO3 have significant impact on the performance of the sorbents for CO2 capture. Among the sorbents prepared, K2CO3/Al2O3 exhibited the highest CO2 capture capacity of 71mg-CO2/g-sorbent, while K2CO3/clay demonstrated a much better compressive strength (25.2MPa), resistance to attrition and an interesting phenomenon of increased CO2 capture capacity with the number of cycles. It was also found that the support/binder material affects the physical properties of the pellets significantly.

Keywords: K2CO3-based sorbents; CO2 capture; Sorbent pellets (search for similar items in EconPapers)
Date: 2014
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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DOI: 10.1016/j.apenergy.2014.09.043

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