| Summary: | The effect of cyclic carbonation–decarbonation operating parameters on Zr-doped CaO sorbent CO<sub>2</sub> uptake capacity evolution is examined. It is revealed that the capacity steady state value increases with the decrease in the carbonation temperature, CO<sub>2</sub> 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<sub>2</sub> and decarbonation is carried out at 742 °C, the sorbent shows the highest values of the initial and steady state CO<sub>2</sub> uptake capacity, namely, 10.7 mmol/g and 9.4 mmol/g, respectively.
|
|---|