A mathematic model to for flue gas denitrification in circulating fluidized beddenitrification of flue gas circulating fluidized bed on with highly active absorbent

Abstract

The simultaneous desulfurization and denitrification experiments are carried out by using highly active absorbents prepared from CaO, fly-ash and additives at a circulating fluidized bed (CFB), physical model of circulating fluidized bed under fast fluidization is established by the analysis of velocity field and concentration field distribution in reactor. On this basis, the Mechanism of Flue gas denitrification by CFB denitrification mechanism of gas CFB is analysed and the denitrification model of gas CFB is established. Moreover, T the effects of various parameters on denitrification efficiencies isare simulated using the model in the meantime. The higher accuracy of the model is exhibited within a error of 5.2% that is verified by the experimentis experimentally verified and is within an error of 5.2%. The model has an important significance foris very helpful in revealing understanding the details of CFB denitrification based onwith highly active absorbent under the fast fluidization conditions.