The effects of baffle plates installed in entrance of selective catalystic reduction (SCR)denitrification reactor are:making the velocity of flue gas to be uniform

and making the flow rate distribution of flue gas through the catalysts to be reasonable as possible.For this

taking baffle plates installed in SCR denitrification reactor of 300 MW unit in one power plant as object of study

and adopting FLUENT software

the optimal structure of baffle plates and optimal distribution of flow field have been obtained through numerical simulation of flow field resulted from baffle plate of different structure

as well as comparison and analysis of many operation conditions.