How denitration spray guns choose denitrification spray guns as the key equipment in the SNCR denitrification process, how to correctly select denitration spray guns, so that the denitration system has the best denitration efficiency, is the first question to be considered when using SNCR denitration process.
Select denitration spray gun, need to consider from the following perspectives.
First, the material because the denitration spray gun in the use of corrosive reducing agent sprayed into the boiler furnace in the 850 °C -1050 °C area, it is necessary to use corrosion-resistant, high temperature materials. Coupled with the rapid flow of dust in the flue gas during the denitrification of the flue gas, wear of the denitration spray gun is caused, so wear resistance of the spray gun material must also be considered.
Second, the atomization effect The denitrification spray gun atomization effect mainly includes the atomization particle size and the atomization coverage.
The particle size of the atomized particles of the denitration spray gun needs to be moderate, not too large or too small. When the particles are too large, the spray particles cannot fully contact with the flue gas, affecting the efficiency of denitrification. In severe cases, droplets may be formed due to incomplete vaporization, which may cause the furnace to burst; when the particles are too small, the ability to penetrate is poor. Reduce the efficiency of denitrification.
In addition, the ability to adjust the denitration spray gun also needs to be considered. Denitration spray guns generally have fixed and telescopic installation methods. For some intermittent denitrification projects, telescopic installations can be used. When they are not needed, the guns can be withdrawn from the furnace to extend the service life. The spray gun can be mounted on the spray head to ensure long-term effective use of the spray gun.
Select denitration spray gun, need to consider from the following perspectives.
First, the material because the denitration spray gun in the use of corrosive reducing agent sprayed into the boiler furnace in the 850 °C -1050 °C area, it is necessary to use corrosion-resistant, high temperature materials. Coupled with the rapid flow of dust in the flue gas during the denitrification of the flue gas, wear of the denitration spray gun is caused, so wear resistance of the spray gun material must also be considered.
Second, the atomization effect The denitrification spray gun atomization effect mainly includes the atomization particle size and the atomization coverage.
The particle size of the atomized particles of the denitration spray gun needs to be moderate, not too large or too small. When the particles are too large, the spray particles cannot fully contact with the flue gas, affecting the efficiency of denitrification. In severe cases, droplets may be formed due to incomplete vaporization, which may cause the furnace to burst; when the particles are too small, the ability to penetrate is poor. Reduce the efficiency of denitrification.
In addition, the ability to adjust the denitration spray gun also needs to be considered. Denitration spray guns generally have fixed and telescopic installation methods. For some intermittent denitrification projects, telescopic installations can be used. When they are not needed, the guns can be withdrawn from the furnace to extend the service life. The spray gun can be mounted on the spray head to ensure long-term effective use of the spray gun.
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