MODELING IN-FURNACE SORBENT INJECTION FOR CONTROL OF SULFUR-DIOXIDE

A process model has been developed which is able to predict with confi dence the sulphur-dioxide removal performance of sorbent injected into the furnace for control of SO2. The model requires limited input info rmation on the boiler plant conditions and the sorbent. It has been va lidated against laboratory and industrial-scale plant data, and gives a good prediction of sulphur-dioxide removal for both limestone and do lomitic sorbents. Therefore this model provides industrial plant desig ners and process operators with a valuable tool, enabling them to asse ss the performance of in-furnace sorbent injection for their plant, as well as selecting the most suitable sorbent and identifying the optim um location for the addition of sorbent.