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Influence of gas flow rate for K2CO3 based CO2 capture

https://doi.org/10.1016/j.ccst.2021.100011

Superficial gas velocity or GHSV could be one important operating parameter in continuous CO2 removal in circulating fluidized bed, considering the optimum residence time required for gas-solid reaction (Boonprasop et al., 2019Sengupta et al., 2018). The increase in inlet gas velocity from 0.06 m/s to 0.11 m/s had resulted in the decline in CO2 removal of K2CO3/Al2O3 from 76.6% to 66.7%, when the adsorbent was tested in a circulating fluidized bed. This was attributed to the decrease in gas-solid contact time (Sengupta et al., 2018). As a consequence, gas velocity should be carefully optimized to an appropriate value, so as to provide an effective bubbling fluidization regime for sufficient gas-solid contact in the reactor.”

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