Performance and Durability of the Zr-Doped CaO Sorbent under Cyclic Carbonation–Decarbonation at Different Operating Parameters

Vyacheslav V. Rodaev and Svetlana S. Razlivalova
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Vyacheslav V. Rodaev: Institute for Nanotechnology and Nanomaterials, Derzhavin Tambov State University, Internatsionalnaya Str. 33, 392000 Tambov, Russia
Svetlana S. Razlivalova: Institute for Nanotechnology and Nanomaterials, Derzhavin Tambov State University, Internatsionalnaya Str. 33, 392000 Tambov, Russia

Energies, 2021, vol. 14, issue 16, 1-9

Abstract: The effect of cyclic carbonation–decarbonation operating parameters on Zr-doped CaO sorbent CO 2 uptake capacity evolution is examined. It is revealed that the capacity steady state value increases with the decrease in the carbonation temperature, CO 2 concentration in the gas flow upon carbonation and with the increase in the heating rate from the carbonation to the decarbonation stages. The rise in decarbonation temperature leads to a dramatic decrease in the sorbent performance. It is found that if carbonation occurs at 630 °C in the gas flow containing 15 vol.% CO 2 and decarbonation is carried out at 742 °C, the sorbent shows the highest values of the initial and steady state CO 2 uptake capacity, namely, 10.7 mmol/g and 9.4 mmol/g, respectively.

Keywords: CaO-based sorbent; high-energy milling; CO 2 capture; cyclic carbonation–decarbonation; sorbent sintering (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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