What is dry ice?
Dry ice is a fascinating substance, known scientifically as solid carbon dioxide (CO2). At a chilling temperature of -78.5 ºC, this white, solid marvel is typically compressed into a colorless liquid at a significant pressure of 62.50 bar. Through a process of throttling and depressurization, it is quickly solidified at lower pressures. Unleash the power of dry ice and dive into its unique properties!
Physical Properties: Dry ice presents itself as a captivating white crystalline structure that sublimates effortlessly at room temperature. This sublime transformation is marked by a high heat of vaporization, allowing it to drastically lower the surrounding temperature upon sublimation at atmospheric pressure. As it transitions, dry ice can liquefy and further condense atmospheric moisture, unveiling a spectacle of natural cooling.
The mesmerizing steam, or the visible white smoke, is formed by water vapor droplets or tiny ice crystals clinging to dust particles in the air. Dry ice boasts a simple cubic crystal structure, attributing to its classification among molecular crystals. Each cube is a meticulous arrangement of single carbon dioxide molecules at the vertices and centers.
Stacking dry ice crystals in varied orientations, both at the vertices and centralized within the cube, creates a uniform formation of this wondrous material.
Chemical Properties: Dry ice stands as a paragon of chemical stability; it is odorless, non-toxic, and non-combustible, signifying it does not support combustion. However, when the carbon dioxide concentration in air surges, it may irritate the respiratory system, accelerating breathing, and potentially leading to suffocation in extreme cases. This is an important consideration when using dry ice in enclosed spaces.
Moreover, carbon dioxide exhibits exceptional thermal stability, decomposing a mere 1.8% even at a searing 2000 ºC. Being an acidic oxide, dry ice mingles with water to form carbonic acid, showcasing its intriguing chemical interplay.
How is dry ice made?
The creation of dry ice begins with extracting liquid carbon dioxide from its storage tank. This liquid is then deftly sprayed into the ice pressing chamber of a dry ice machine. As it passes through a nozzle, a substantial volume of gaseous carbon dioxide emerges, creating snowflake-like dry ice solids. These delicate crystals embody the beauty of rapid phase transitions.
As the accumulation of solid dry ice reaches a critical mass, the hydraulic system springs to life, compressing the snowflakes into sturdy dry ice cubes. Ejected from the die end, these cubes are subjected to the activated rotating blade at the machine's terminus, which shatters the elongated dry ice columns into smaller, user-friendly pieces.
These pieces are transformed into dry ice pellets of a specified length, ready to tackle any cleaning challenge with precision.
There are three main principles of dry ice cleaning:
Energy Transfer: Harness the dynamic force of dry ice impacting a surface at incredible speed. The kinetic energy from the impact dissipates rapidly, enabling instant heat transfer between dry ice particles and the surface, causing sublime sublimation of carbon dioxide. This rapid cooling and contraction render dirt brittle, ready for swift removal.
The dirt is effortlessly washed away, leaving surfaces pristine.
Low Temperature Cracking: When two materials with differing thermal expansion coefficients meet, the temperature disparity disrupts their bond. Dry ice pellets, at a frosty -78.5 ºC, collide with the surface, freezing the dirt until it becomes fragile. This method artfully exploits thermal stress to detach stubborn grime.
As the materials separate, 'cracks' form, altering the mechanical traits of adhering dirt, causing it to release and fall off effortlessly.
Micro Explosion: After dry ice particles infiltrate the cracks in stubborn dirt, they sublimate in mere milliseconds, exponentially expanding up to 600-800 times their original volume. This explosive growth powerfully peels dirt from the object's surface, ensuring in-depth cleaning.
Brief explanation of the industry application of dry ice cleaning
Dry ice cleaning is revolutionizing industries with its ability to eradicate surface stains from a multitude of materials, such as metals, molds, production equipment, and even ancient artifacts. This innovative process eliminates the need for cooling or mold disassembly, averting the corrosive damage often caused by chemical cleaning. Experience the new age of cleaning without compromise!
Unlike mechanical cleaning, which risks scratching molds and degrading precision through repeated handling, dry ice cleaning preserves integrity. Explore these industry examples and witness the transformative power of dry ice cleaning in action:
1.Petrochemical industry: Harness the innovative power of dry ice cleaning technology to effortlessly eliminate rust and dust from critical equipment like main fans, air compressors, exhaust fans, steam turbines, and blowers integral to the petrochemical process. This advancement eliminates the cumbersome blade removal and the subsequent recalibration for dynamic leveling, ensuring seamless operations.
Elevate your cleaning operations: Effectively tackle the toughest challenges like coking and scale removal in a variety of heating furnaces, reactors, and more. Keep your heat exchangers in top condition by cleaning polyvinyl chloride resin with precision. Remove oil and rust stains effortlessly from compressors, storage tanks, boilers, reactors, condensers, and complex machinery, ensuring optimal performance and longevity.
And dust;
2.Power system: Experience the transformative power of dry ice cleaning with its ability to directly clean indoor and outdoor transformers, insulators, distribution cabinets, wires, and cables even under live load (up to 37 kV). Safeguard your components-generators, motors, rotors, stators-ensuring they are cleaned without damage, optimizing performance and extending their lifespan.
3.Food production: Revolutionize your cleaning process by using dry ice to effectively remove baking residue, gelatinous substances, oil stains, and fresh product mixtures prior to baking. Ensure your ovens, mixing and stirring equipment, conveyor belts, and molded products shine with cleanliness.
Packaging equipment, furnace racks, furnace plates, containers, rollers, inner walls of refrigerators, biscuit grates, and more are impeccably cleaned, ensuring hygiene and operational efficiency.
4.Automotive and shipping industry: Achieve pristine cleanliness in your vehicles by cleaning car door covers, canopies, carriages, and bottom oil stains without any water residue, preventing water pollution. Efficiently clean carburetors and remove paint from car surfaces. Swiftly address engine carbon deposits on vehicles and ships, avoiding the lengthy 48-hour processes and harmful chemicals, all while achieving a remarkable 100% descaling rate in merely 10 minutes.
Revolutionize your maintenance routine with dry ice cleaning. Say goodbye to prolonged processing times and hazardous chemicals. Enjoy the swift and thorough removal of carbon deposits, minimizing downtime and operational costs.
Maintain a sparkling clean environment in your ship's hull, seawater intake valve, seawater condenser and heat exchanger, engine room, mechanical, and electrical equipment with unparalleled efficiency.
5.Aerospace field: Propel your operations into the future with dry ice cleaning during pre-production processes for missile and aircraft painting and final assembly. Remove paint from composite molds and special aircraft effortlessly. Keep engines spotless with carbon cleaning, especially in crucial areas like the landing gear wheel compartment, and achieve immaculate paint removal from aircraft shells.
Transform your jet engine conversion system with dry ice cleaning, allowing you to work directly on the body, saving precious time and resources.
6.Printing industry: Elevate your printing operations with the precision of dry ice cleaning. Effectively remove oil-based and water-based inks and varnishes, clean oils, ink deposits, and dyes on gears, rails, and nozzles. This ensures not only the superior quality of printed products but also prolongs the lifespan of your printing equipment without the risk of wear.
Preserve the integrity of your printing equipment with dry ice cleaning that prevents wear and tear, ensuring long-lasting operation.
Cultural relic cleaning: Preserve the past with cutting-edge dry ice cleaning technology-efficiently and non-destructively cleanse pollutants like soil, soluble salts, mold, and sedimentary films from the surface of cultural relic specimens. This advanced method surpasses traditional physical and chemical cleaning, greatly enhancing cleaning efficiency and quality while prioritizing environmental friendliness and worker health.
Embrace the future of cleaning with a method that balances efficiency, quality, environmental responsibility, and worker safety.
Cleaning method and working principle of CHIRUI pellet dry ice cleaning
Similar to blasting with steel sand, glass sand, or baking soda, dry ice blasting accelerates dry ice particles in high-pressure airflow to impact the surface requiring cleaning. This method stands out with its unique characteristics.
The uniqueness shines in the immediate vaporization of dry ice particles at the moment of impact. This rapid action causes the momentum of dry ice particles to vanish instantly, initiating a swift heat exchange with the cleaning surface. This process ignites
Solid CO2's rapid sublimation into gas. Within mere milliseconds, dry ice particles expand nearly 800-fold in volume, creating a spectacular 'micro explosion' at the impact point. Harness the natural volatility of CO2 for unparalleled cleaning power.
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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 |
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