Lattice Boltzmann simulation of flow and mass transfer of CO2 adsorption in porous MgO particle

doi:10.7523/j.issn.2095-6134.2020.02.015

›› 2020, Vol. 37 ›› Issue (2): 248-254.DOI: 10.7523/j.issn.2095-6134.2020.02.015

• Columns of Multi-phase Flow • Previous Articles Next Articles

Lattice Boltzmann simulation of flow and mass transfer of CO₂ adsorption in porous MgO particle

LIU Bo, DING Yudong, LIAO Qiang, ZHU Xun, WANG Hong

Key Laboratory of Low-grade Energy Utilization Technologies and Systems of Ministry of Education, Institute of Engineering Thermophysics, Chongqing University, Chongqing 400030, China

Received:2019-01-23 Revised:2019-05-15 Online:2020-03-15

Abstract

Abstract: 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.

Key words: lattice-Boltzmann method, porous adsorbent, CO₂ adsorption, MgO particle, gas-solid reaction

CLC Number:

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]. , 2020, 37(2): 248-254.

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Lattice Boltzmann simulation of flow and mass transfer of CO₂ adsorption in porous MgO particle

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