What is dry ice?
Dry ice, the intriguing white solid form of carbon dioxide (CO2), exists at a chilling -78.5 ºC. Normally, CO2 is initially condensed into a colorless liquid at a high pressure of 62.50 bar. It then undergoes rapid transformation into a solid state under low pressure conditions through throttling and depressurization.
Physical properties: Dry ice is presented as enchanting white crystals that can easily sublimate at room temperature. With its exceptionally high heat of vaporization, it swiftly reduces the surrounding temperature as it sublimates under atmospheric pressure. Consequently, dry ice facilitates the liquefaction and further condensation of atmospheric water, forming a mesmerizing mist.
The steam, captivatingly visible as white smoke, is composed of water vapor droplets or small ice crystals clinging to dust in the air. The crystal structure of dry ice is a simple cubic formation, categorized under molecular crystals, with each vertex and center of the cube aligned with a single carbon dioxide molecule.
In this intricate structure, dry ice crystals are stacked in varied orientations at both vertices and centers of the cube, embodying a marvel of natural design.
Chemical properties: Dry ice stands as a paragon of chemical stability; it is odorless, non-toxic, non-combustible, and does not support combustion. However, elevated carbon dioxide levels in the air can lead to respiratory stimulation, faster breathing, and potential suffocation risks.
This phenomenon is known as hypoxia. Carbon dioxide boasts remarkable thermal stability, resisting decomposition (only 1.8%) even at a scorching 2000 ºC. As an acidic oxide, dry ice reacts with water to yield carbonic acid, further emphasizing its unique chemical attributes.
How is dry ice made?
Liquid carbon dioxide is meticulously extracted from a storage tank and sprayed into the ice pressing chamber of the dry ice machine. Here, it undergoes throttling through a nozzle, producing an abundance of carbon dioxide gas and enchanting snowflake-like dry ice solids. As these solid forms of dry ice accumulate,
Once reaching a specified quantity, the hydraulic system springs into action. The piston compresses these snowflake-shaped dry ice particles into cohesive dry ice cubes, which are subsequently expelled from the machine's die end. At this moment, the rotating blade of the dry ice machine engages, transforming the stretched dry ice column into expertly fragmented pieces.
These pieces are refined into dry ice pellets of the exact desired length.
There are three main principles of dry ice cleaning:
Energy transfer: Dry ice particles impact the surface to be cleaned with high velocity, dissipating their kinetic energy. This impact promotes a rapid heat transfer, causing the dry ice to sublime instantaneously. The cleaned surface's dirt is quickly cooled, contracts, and ultimately becomes brittle,
and is efficiently washed away.
Low temperature cracking: The striking temperature difference between two materials with differing thermal expansion coefficients disrupts their bond. Dry ice pellets, at a chilling -78.5 ºC, hit the surface, freezing the dirt until it becomes brittle,
melting, and bursting. This results in 'cracks' that compromise the mechanical integrity of the adhered dirt, facilitating its detachment.
Micro explosion: As dry ice particles delve into dirt crevices, they sublimate in mere milliseconds, expanding their volume by 600-800 times. This explosive expansion effectively removes dirt from the object's surface.
Brief explanation of the industry application of dry ice cleaning
Dry ice cleaning finds widespread application across various industries, effectively removing surface stains from metals, molds, production equipment, venerable historical relics, and more. This cleaning method negates the need for mold cooling or disassembly, thereby preventing corrosion and chemical damage that can arise with traditional cleaning methods.
In contrast, mechanical cleaning can lead to detrimental outcomes like mold scratching, mechanical damage, and decreased mold precision due to repeated handling. Here are some notable examples:
1.Petrochemical Industry: Embrace the revolutionary dry ice cleaning technology to effortlessly eradicate rust and dust from critical equipment such as main fans, air compressors, exhaust fans, steam turbines, and blowers utilized in petrochemical processes. This advanced solution negates the need for blade removal, thus eliminating the necessity for dynamic leveling recalibration, ensuring efficiency and precision.
Witness the unmatched efficiency in weighing steps and the removal of stubborn coking deposits from diverse heating furnaces, reactors, and more. Experience pristine cleaning of polyvinyl chloride resin on heat exchangers and the seamless removal of oil and rust stains from vital equipment including compressors, storage tanks, boilers, reactors, condensers, and intricate machinery, enhancing their longevity and performance.
Ensuring a dust-free environment;
2.Power System: Experience unparalleled cleaning of both indoor and outdoor transformers, insulators, distribution cabinets, wires, and cables, even under live load conditions (below 37 kV). Seamlessly clean generators, motors, rotors, stators, and other components without any damage, ensuring safety and extending the lifecycle of power assets.
3.Food Production: Harness the extraordinary power of dry ice cleaning to deftly remove baking residues, gelatinous substances, oil stains, and fresh product mixtures before the baking process. This method guarantees meticulous cleaning of ovens, mixing and stirring equipment, conveyor belts, and molded products, ensuring sanitation and quality in food production.
Achieve impeccable hygiene standards with dry ice cleaning for packaging equipment, furnace racks, furnace plates, containers, rollers, refrigerator inner walls, biscuit grates, and other essential equipment;
4.Automotive and Shipping Industry: Experience the pinnacle of innovation in cleaning car door covers, canopies, carriages, and eliminating bottom oil stains without any water residue, ensuring no water pollution. Revolutionize car carburetor cleaning and paint removal from car surfaces, while adeptly eliminating engine carbon deposits on vehicles and ships with potent chemical agents.
With traditional methods, processing time extends to a lengthy 48 hours, posing health risks. In stark contrast, dry ice cleaning eradicates carbon deposits within a swift 10 minutes, thus dramatically saving time, slashing costs, and achieving a stellar descaling rate of up to 100%;
Efficiently clean hulls, seawater intake valves, seawater condensers, heat exchangers, engine rooms, mechanical and electrical equipment, ensuring optimal protection and maintenance;
5.Aerospace Field: Elevate your pre-production processes with precision cleaning in missile and aircraft painting and final assembly stages. Skillfully remove paint from composite molds and special aircraft, conduct engine carbon cleaning, and undertake essential maintenance and cleaning, especially in the landing gear wheel compartment area. Accurately execute paint removal of aircraft shells with ease;
Revolutionize the jet engine conversion system. Operate directly on the body, saving precious time and resources while maximizing operational efficiency;
6.Printing Industry: Dry ice cleaning emerges as an adept solution to remove various oil-based and water-based inks and varnishes, meticulously cleaning oil stains, ink deposits, and dyes on gears, rails, and nozzles. This ensures not only the superior quality of printed products but also guarantees the enduring preservation of printing equipment.
Printing equipment experiences no wear and tear, ensuring undiminished performance.
Cultural Relic Cleaning: Dry ice cleaning technology stands out as an efficient, non-destructive technique to meticulously clean pollutants such as soil, soluble salts, mold, and sedimentary films from cultural relic specimens. This method significantly enhances cleaning efficiency and quality while being exceptionally friendly to the environment and safeguarding the health of workers.
It elevates cleaning efficiency and quality to new heights, offering an eco-friendly and worker-safety-conscious solution.
Cleaning Method and Working Principle of CHIRUI Pellet Dry Ice Cleaning
Analogous to spraying steel sand, glass sand, plastic sand, and baking soda, our dry ice blasting medium accelerates dry ice particles within high-pressure airflow to impact the cleaning surface. The exceptional advantage of dry ice cleaning,
Lies in its ability to vaporize dry ice particles instantaneously upon impact. The momentum of these particles dissipates at the point of impact, triggering rapid heat exchange with the cleaning surface. This causes
Solid CO2 to sublimely transition into gas, with dry ice particles expanding nearly 800 times in volume in mere milliseconds, culminating in a 'micro explosion' at the impact point. The volatile nature of CO2
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| Model |
GT05 |
GT10 |
| Compressed air flow rate |
> 1.1³ /min |
> 2.5³ /min |
| air supply pressure |
0.4-1.0Mpa |
0.6-1.0Mpa |
| Dry ice blasting rate |
0-0.5KG/min |
0-1.0KG/min |
| Dry ice capacity |
5-7.5KG |
12-15KG |
| Dry ice state |
3mm granular |
3mm granular |
| Motor power |
0.37kw |
0.37kw |
| Dimensions (L x W x H) |
512 * 643 * 800 (mm) |
650 * 693 * 900 (mm) |
| Equipment weight |
65KG |
80KG |
| Power supply equipped with |
AC220V/50HZ |
AC220V/50HZ |
| Standard accessory 1 (air connection pipe) |
8m Φ 12mm compressed |
8m Φ 12mm compressed |
| Standard accessory 2 |
Gun handle |
Gun handle |
| Standard accessory 3 |
straight nozzle |
straight nozzle |
Audited Supplier 
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