The lattice-Boltzmann method was used to simulate the characteristics of flow and mass transfer of CO2 adsorption process in MgO particle. Effects of porosity and particle size of the MgO particle on the percolation velocity, CO2 concentration, CO2 adsorption rate, and adsorbent conversion rate were simulated based on the second-order reaction kinetic model. The results show that the CO2 concentration and adsorbent conversion rate decreased gradually along the gas flow direction in MgO particle. For the same adsorption time, the bigger the particle size was, the lower the percolation velocity, CO2 adsorption rate, and adsorbent conversion rate in particle were. For the same adsorption time and particle size, with the increase in the porosity of the particle, the absorbent conversion rate and CO2 concentration increased and the average adsorption rate also sped up.
LIU Bo
,
DING Yudong
,
LIAO Qiang
,
ZHU Xun
,
WANG Hong
. Lattice Boltzmann simulation of flow and mass transfer of CO2 adsorption in porous MgO particle[J]. Journal of University of Chinese Academy of Sciences, 2020
, 37(2)
: 248
-254
.
DOI: 10.7523/j.issn.2095-6134.2020.02.015
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