What is dry ice?
Dry ice is a pristine white solid form of carbon dioxide (CO2), existing at a chilling -78.5 ºC. It originates from CO2 gas condensed into a colorless liquid under a formidable pressure of 62.50 bar. Through a swift process of throttling and depressurization, it is rapidly transformed into its solid state.
Physical properties: As a white crystalline material, dry ice sublimates effortlessly at room temperature, releasing a significant heat of vaporization. This capability allows it to swiftly lower ambient temperatures under atmospheric conditions. As it transitions from solid to gas, dry ice can liquefy and further condense water vapor in the air.
Visible white smoke is actually steam, a collection of water vapor droplets or tiny ice crystals attached to airborne dust. The crystalline structure of dry ice is simplistic yet fascinating, forming a basic cubic lattice within the realm of molecular crystals, represented by a singular carbon dioxide molecule.
Imagine dry ice crystals meticulously stacked in diverse orientations, stationed at the vertices and centers of a cube, creating a mesmerizing molecular alignment.
Chemical properties: Dry ice stands as a paragon of chemical stability. Scentless and non-toxic, it is also non-flammable and incapable of supporting combustion. Nevertheless, excessive carbon dioxide levels in the air may stimulate the respiratory system, leading to increased breathing rates and potential suffocation risks.
This condition, known as hypoxia, is due to the air's heightened CO2 levels. Carbon dioxide's extraordinary thermal stability is evident with only a minimal 1.8% decomposition even at scorching temperatures of 2000 ºC. As an acidic oxide, dry ice reacts with water to create carbonic acid.
How is dry ice made?
The journey of dry ice begins with liquid carbon dioxide, artfully extracted from its storage tank and introduced into the ice pressing chamber of a dry ice machine. Throttling through a precise nozzle evokes a transformation into copious amounts of gaseous CO2 and delicate snowflake-like dry ice solids.
Upon accumulating to a specific threshold, the hydraulic system springs into action, with a piston compressing the snowflake-shaped dry ice into formidable cubes and ushering them out through the die. Here, a rotating blade at the machine's end is set in motion, diligently fragmenting the elongated dry ice columns into manageable pieces.
Crafted to perfection, dry ice pellets reach their destined length.
There are three main principles of dry ice cleaning:
Energy transfer: With remarkable speed, dry ice collides with the target surface, dispersing kinetic energy upon impact. This rapid heat exchange between dry ice particles and the surface incites immediate CO2 sublimation, swiftly cooling and contracting the dirt until it becomes brittle.
Consequently, the surface is effectively stripped of its grime.
Low temperature cracking: The battle of thermal expansion coefficients ensues as contrasting materials encounter a temperature disparity. Dry ice pellets, chilled to -78.5 ºC, assail the treated surface, inducing the dirt to freeze and ultimately shatter.
As a result, cracks emerge, undermining the mechanical properties of the adhering dirt, and compelling it to detach.
Micro explosion: Invading the dirt's fissures, dry ice particles undergo a rapid sublimation within milliseconds, their volume expanding by an astonishing 600-800 times, forcefully dislodging dirt from the object's surface.
Brief explanation of the industry application of dry ice cleaning
Dry ice cleaning has revolutionized the maintenance of various surfaces, from metals and molds to production equipment and ancient relics. Its non-invasive approach eliminates the need for cooling or dismantling molds, thereby averting the corrosive and damaging effects of chemical cleaning.
Traditional mechanical cleaning methods often inflict mechanical damage, scratches, and compromise mold precision due to repeated handling. Here are illustrative examples of its advantages:
1.Petrochemical Industry: Revolutionize your cleaning processes with our advanced dry ice cleaning technology! Perfectly suited for removing rust and dust from crucial equipment like main fans, air compressors, exhaust fans, steam turbines, and blowers during petrochemical operations. No need to dismantle blades, which means you can skip the time-consuming recalibration for dynamic leveling. Experience the ease and efficiency in maintaining your petrochemical setup!
Optimize your operations with precise cleaning of coking build-up in various heating furnaces and reactors. Also, effortlessly clear polyvinyl chloride resin from heat exchangers, ensuring seamless functionality. Our technology excels in removing oil and rust from intricate equipment such as compressors, storage tanks, boilers, reactors, condensers, and complex machinery, maintaining peak performance in your industrial environment.
Dust, and more;
2.Power System: Experience transformative cleaning for both indoor and outdoor transformers, insulators, distribution cabinets, wires, and cables even with a live load up to 37 kV. This innovative cleaning solution ensures your generator, motor, rotor, stator, and other components remain damage-free, maintaining their operational integrity and prolonging lifespan.
3.Food Production: Elevate your hygiene standards with dry ice cleaning, effectively removing baking residue, gelatinous substances, and oil stains. Clean ovens, mixing and stirring equipment, conveyor belts, and molded products before they hit the heat. Our solution is ideal for maintaining the pristine condition of your food production equipment.
Flawlessly clean packaging equipment, furnace racks, furnace plates, containers, rollers, refrigerator walls, biscuit grates, and beyond, ensuring impeccable hygiene and operational efficiency in your food production line.
4.Automotive and Shipping Industry: Achieve a spotless clean without a trace of water residue! Perfect for cleaning car door covers, canopies, carriages, and bottom oil stains without any risk of water pollution. Say goodbye to cumbersome carburetor cleaning and effortlessly remove paint from car surfaces. Swiftly tackle engine carbon deposits on both vehicles and ships with unmatched precision.
Our revolutionary dry ice cleaning drastically cuts down cleaning time to a mere 10 minutes, solving carbon deposit problems efficiently and cost-effectively. Benefit from a perfect descaling rate of up to 100%, saving time and resources.
Clean the hull, seawater intake valve, seawater condenser and heat exchanger, engine room, mechanical and electrical equipment, and more, ensuring your marine operations are smooth and efficient.
5.Aerospace Field: Promote excellence in the aerospace sector, from missile and aircraft painting to final assembly. Our dry ice cleaning prepares surfaces to perfection, efficiently removing paint from composite molds and aircraft. Tackle engine carbon cleaning and perform maintenance, especially in complex areas like landing gear compartments, with finesse and precision.
Jet engine conversion systems can be cleaned directly on the body, saving precious time and ensuring your aerospace operations are flawlessly maintained.
6.Printing Industry: Ensure impeccable print quality with our dry ice cleaning technology. Effortlessly remove both oil-based and water-based inks, varnishes, and stubborn ink deposits from gears, rails, and nozzles. By maintaining your printing equipment, you guarantee the superior quality and durability of your printed products.
Protect your printing equipment from wear and tear, prolonging its useful life and ensuring consistent, high-quality output.
Cultural Relic Cleaning: Preserve history with our non-destructive dry ice cleaning technology that efficiently removes soil, soluble salts, mold, and sedimentary films from cultural relics. This modern approach outperforms traditional methods, offering increased efficiency and quality while being kinder to the environment and the health of conservators.
Our cleaning method guarantees superior environmental friendliness and improves worker safety, setting new benchmarks for cultural relic preservation.
Cleaning Method and Working Principle of CHIRUI Pellet Dry Ice Cleaning
Similar to traditional methods like steel sand, glass sand, and plastic sand blasting, our dry ice blasting medium propels dry ice particles at high speed to impact and clean surfaces. The brilliance of dry ice cleaning is revealed as the dry ice particles vaporize instantly upon impact.
The uniqueness of our method lies in the immediate sublimation of dry ice particles. At the moment of impact, a rapid heat exchange occurs, causing dry ice particles to disappear and expand into a gas.
Solid CO2 sublimates explosively, expanding nearly 800 times in volume in milliseconds, creating a 'micro explosion' at the impact point. Due to CO2's volatility, this process ensures thorough, efficient cleaning.
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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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