Dry ice cleaning principle, equipment, advantages and disadvantages

- Apr 18, 2019-

"energy transfer". The dry ice hits the surface to be cleaned at high speed, the impact kinetic energy is dissipated, and the dry ice particles and the cleaning surface undergo extremely rapid heat transfer, and the carbon dioxide is sublimated instantaneously.

"Cryogenic cracking". Two different materials with different coefficients of thermal expansion, the temperature difference between them will destroy the bond between the two materials. Dry ice particles (-78.5 ° C) impact the surface of the treated material, causing the dirt to freeze to embrittlement and burst, resulting in "cracking" and affecting the mechanical properties of adhering dirt.

Dry ice cleaning principle

"Micro explosion". After the dry ice particles are drilled into the dirt crack, they are vaporized in a few thousandths of a second, and their volume is instantly expanded 600-800 times, and the dirt is peeled off the surface of the object.

The dry ice cleaning process uses compressed air as the power to spray the dry ice particles to the surface of the object to be cleaned at supersonic speed, but instead of relying solely on the kinetic energy of the dry ice particles, the ultra-low temperature performance of the dry ice is used to achieve the purpose of decontamination.

Dry ice cleaning equipment

Dry ice cleaning equipment can generally be divided into two parts:

(1) Dry ice pellet machine. The liquid CO2 is made into dry ice particles of a certain size, which are usually high density dry ice particles having a diameter of 3 mm and a length of 2.5 mm to 10 mm.

Dry ice pellet maker dry ice machine

(2) Dry ice washing machine. The equipment generally requires a clean compressed air source of 4.5 bar or more and 3 m3/min or more, and is loaded with high-density dry ice particles in the washing machine. Under the driving of compressed air, with compressed air, it is mixed through a specially designed spray gun system. Accelerate and spray onto the surface of the object being cleaned.

Dry ice pellet maker dry ice machine

Users can purchase 1 dry ice washing machine as needed. The purchased dry ice granules are placed in a dry ice washing machine for cleaning. 2 Purchase dry ice granulator and dry ice cleaner, but use them separately. The dry ice pellets produced by the dry ice pellet machine are stored in a special sealed container, transported to the construction site, and loaded into a dry ice washing machine for cleaning. 3 The dry ice granulator and the dry ice washing machine are matched into one system.

Dry ice cleaning advantages

Decontamination broad

Oil stains, inks, paints, adhesives, carbon deposits, asphalt, scale, resin, mold release layer, surface rust, etc.

Cost effective

Fast cleaning and best results.

Does not damage the surface of the object to be cleaned, extending its service life.

No residue, no pollution, eliminating the cost of cleaning pollution.

Online cleaning, no need to dismantle, no need to stop work, avoid damage and increase production capacity.

Safety and environmental protection

High operational safety.

There is no secondary pollution during the cleaning process.

Wide range of applications

Widely used in military, nuclear, metallurgy, foundry, petroleum, chemical, rubber, plastics, ships, automobiles, food, medicine, machinery, printing, electricity, electronics and other fields.www.wxytgas.com