CFD modeling of a carbonation reactor with a K-based dry sorbent for co₂ capture

A 2D CFD simulation of the carbonation reactor is carried out to evaluate the performance of potassium-based dry sorbent during the CO₂ capture process. A multiscale drag coefficient model is incorporated into the two-fluid model to take the effects of clusters into account. The influence of several parameters on CO₂ removal is investigated. The results indicate that increasing the reactor height and reducing the gas velocity can lengthen the residence time of particles and enhance the CO₂ removal. The operating pressure has a significant influence on the performance of solid sorbents. A higher pressure will decrease the CO₂ removal efficiency.