What is the working principle of dry ice cleaning machine's equipment?

In fact, the working mode of dry ice cleaning equipment in industrial equipment cleaning is similar to that of sand blasting and other cleaning equipment, except that there is no equipment similar to dry ice cleaning machine principle in industrial cleaning. Dry ice cleaning equipment uses tiny dry ice particles (spheres) to clean by spraying them on the surface at high speed.

Working principle of dry ice cleaning equipment;

Thermal shock: the unique principle of dry ice cleaning equipment lies in the temperature difference between pollutants and the surface of objects (cold shock -79 degrees Celsius). The surface of pollutants is rapidly cooled to -79C by dry ice particles, which makes the dust freeze and brittle. Adhesion to clean surfaces drops sharply.

Mechanical kinetic energy: dry ice particles impact the cleaned surface at high speed, and the hardness of dry ice particles is low (Mohs 2) at high speed, which will not damage the surface.

Physical sublimation: When dry ice particles touch a clean surface, they will sublimate immediately. In other words, dry ice changes from solid to gas. The volume of dry ice particles has increased by 800 times. This cleaning will not damage the surface to be cleaned, but will be blown away to remove dust. Particles will remove contaminants and fall off the surface without damaging the surface. The whole process does not produce water and does not need any chemicals.