High Calcium Utilization and Gypsum Formation for Dry Desulfurization Process

摘要

The high-active sorbent for SO_2 remvoal was developed by mxing CaO particles with fly ash in water at ambient temeprature. The calcium utlization rate in the sorbent was acheived to 60/100 after the desulfurization reaction at 450 deg C for 90 min, while the utiliation rate for original pure CaO particles was only 21/100 under the identical conditions. The surface of the sorbent was examined by SEM, EDX, and BET analysis to study the activation mechanism.