The atomization characteristics of the nozzle in SNCR system directly affect the denitration efficiency.The spray angle

spray distance and some other macroscopic parameters can be measured through spray experiments.The Fluent software was adopted to simulate the air-blast atomizer in SNCR system

and the influence of gas-liquid pressure on flow characteristics and atomization effect was put forward.With a constant gas pressure

as the water pressure increases

the spraying volume increases while the gas consumption rate decreases.The opposite trend was obtained when the liquid pressure is fixed.This conclusion agrees well with the experimental results.