The uniform flow field in denitrification reactor is rather important for the denitrification system

while the performance of baffle plate above the bed layer of catalyst is the key regarding uniformity of the flow field.By using fluid mechanics calculating software CFD and changing the structure parameters

such as interval between baffle plates

the length of baffle plate

the included angle with the Z axis

as well as the distance between first baffle plate and side-wall of the reactor etc.

the gas straightening grattings(GSG) have been simulated

thereby

the influence of GSG structure parameters upon the flow field distribution in the reactor being analysed.Results show that the variation of distance between first baffle plate and side-wall of the reactor has very little influence upon the flow field performance

and thus can be ignored.The value of structure parameters has a range which makes flow field in the reactor to be the best.The original scheme is optimal in aspects of uniformity

vector index of the gas flow velocity

and the pressure drop etc.

can be used as the basis of design.