How the airflow atomizer works

The working principle of the airflow atomizer:

The airflow atomizer works by using a high velocity gas stream to split the liquid film. High-speed airflow can be either compressed air or steam, which is more economical than compressed air (steam is limited by the heat resistance of the material). Therefore, it can be used only when the heat resistance temperature of the material allows. When compressed air or steam is ejected from the atomizer at a very high annulus velocity, there is a high relative velocity between the two due to the low flow rate of the feed. The friction and shear forces are generated between the gas and the liquid, and the liquid is drawn into a long and thin line at an instant, and then the liquid filaments are quickly broken at a fine place to form minute droplets. The existence time of the filament depends on the relative velocity between the gas and the liquid and the physical properties of the liquid. The higher the relative velocity, the finer the liquid filament produced, the shorter the time of existence, and the higher the dispersion of the droplet.

The dispersion of the airflow spray depends on the jet velocity of the gas from the atomizer and the physical properties of the feed and gas, the geometry of the atomizer, and the gas to liquid ratio, a mixture of gas and liquid phases. In general, for a liquid having a higher atomization viscosity, a finer droplet can be obtained by increasing the gas-liquid ratio.

Factors affecting the atomization effect:

1 , the influence of gas-liquid ratio

2 , the impact of relative speed

3 , the influence of liquid viscosity

4 , the surface tension of the liquid

5 , the impact of airflow speed

6 , the impact of air density

Tower type is determined:

1 , spray and flow

2 , spray down the countercurrent

3 , spray down and flow

4 , under the spray mixed flow