Three-dimensional cfd simulation of the regeneration of mgo-based sorbent in a carbon capture process

摘要

1.Computational Fluid Dynamics (CFD) along with drag expression based on EMMS approach and Shrinking core model described well CO_2 regeneration process using MgO-based sorbents. 2.Our simulation showed that operating the regenerator at high pressures (e.g. 50 atm) allowed us to use higher gas velocity and solid circulating rate without back-mixing of the solids which occurred at moderate pressures. 3.Higher steam velocity in the system was shown to dilute the system with regard to CO_2 mole fraction and resulted in an improvement in sorbent regeneration. □ Higher solid circulating rate was shown to increase the amount of CO_2 leaving the system from the bottom of the reactor with regenerated sorbents.