What is dry ice?
Dry Ice, a marvel in solid form, is simply the crystallized state of carbon dioxide (CO2), brilliantly crafted at a chilling -78.5 ºC. Typically, CO2 is condensed into a pristine, colorless liquid at a robust pressure of 62.50 bar. Upon encountering low-pressure environments, it swiftly solidifies, creating the dry ice we know so well.
Physical Properties: Presenting as white, crystalline beauty, dry ice sublimates gracefully at room temperature. Its substantial heat of vaporization lets it dramatically cool its surroundings under atmospheric pressure conditions. Thus, as dry ice sublimates, it elegantly captures moisture from the air, potentially liquefying and further condensing water vapor.
As dry ice sublimates, it produces a stunning visual of white smoke, a result of water vapor droplets or tiny ice crystals clinging to airborne dust. Its simple cubic crystal structure, a remarkable example of molecular crystals, holds each carbon dioxide molecule in perfect alignment.
Dry ice crystals are meticulously arranged, each positioned at the vertices and centers of a cube, showcasing a pristine stacking orientation.
Chemical Properties: Dry ice, the epitome of chemical stability, is odorless, non-toxic, and inherently safe from combustion. However, in environments with elevated carbon dioxide levels, it may provoke the respiratory system, leading to rapid breathing and, in extremes, a risk of suffocation.
Carbon dioxide, famed for its high thermal stability, exhibits a mere 1.8% decomposition even at the intense heat of 2000 ºC. As an acidic oxide, dry ice contributes its acidic properties by forming carbonic acid upon contact with water.
How is dry ice made?
The creation of dry ice begins as liquid carbon dioxide is sourced from a storage tank and meticulously introduced into the ice pressing chamber of a dry ice production machine. As it passes through the nozzle, a dramatic transformation occurs, generating a cloud of gas and snowflake-like dry ice solids.
Once a sufficient quantity of solid dry ice is gathered, the machine's hydraulic system springs to life, compressing these delicate snowflakes into robust dry ice cubes, which are then extruded from the die's end. At this moment, the machine's rotating blade activates, skillfully breaking the elongated dry ice column into manageable pieces.
These fragmented dry ice particles are crafted into the desired pellet length, ready for use in a range of applications.
There are three main principles of dry ice cleaning:
Energy Transfer: At the heart of dry ice cleaning lies the principle of energy transfer. Upon high-speed impact with a surface, dry ice channels kinetic energy into the task. The rapid heat exchange causes carbon dioxide to sublime, leading to a swift contraction and brittleness in the dirt, easing its removal.
Thus, the dirt is effortlessly washed away.
Low Temperature Cracking: Varying coefficients of thermal expansion in different materials generate significant temperature disparities, obliterating bonds. Dry ice pellets at -78.5 ºC strike the surface, freezing and embrittling the dirt, leading to its eventual crack and shedding.
The subsequent melting and fragmentation produce 'cracks' that compromise the dirt's mechanical integrity, encouraging its detachment.
Micro Explosion: As dry ice particles infiltrate dirt fractures, their sublimation occurs within mere milliseconds, volumetrically expanding by 600-800 times, effectively dislodging dirt from the object's surface.
Brief explanation of the industry application of dry ice cleaning
Dry ice cleaning boasts a vast array of applications, effortlessly tackling stains on metal, molds, production equipment, and even ancient relics. Its prowess negates the need for mold cooling or disassembly, preventing corrosion and damage typical of chemical cleaning methods.
Unlike traditional mechanical cleaning, which often results in scratches and diminished mold accuracy due to repeated handling, dry ice cleaning ensures preservation and precision. Here are some exemplary instances:
1.Petrochemical industry: Unlock the power of innovation with dry ice cleaning technology, expertly designed to tackle rust and dust on key equipment like main fans, air compressors, exhaust fans, steam turbines, and blowers involved in the petrochemical process. Enjoy the luxury of cleaning without dismantling blades, thus eliminating the tedious recalibration for dynamic leveling.
Efficiently handle the weighing steps, and effortlessly remove coking from a variety of heating furnaces, reactors, and more. Experience pristine cleaning of polyvinyl chloride resin on heat exchangers and achieve spotless oil and rust removal from equipment such as compressors, storage tanks, boilers, reactors, and complex machinery, ensuring optimal performance.
and dust effortlessly.
2.Power system: Introducing a revolutionary cleaning method that allows you to clean indoor and outdoor transformers, insulators, distribution cabinets, wires, and cables safely, even with a live load (under 37 kV). Protect and maintain the integrity of generators, motors, rotors, stators, and other components without any damage.
3.Food production: Elevate your sanitation standards with dry ice cleaning, capable of removing stubborn baking residues, gelatinous substances, oil stains, and fresh product mixtures pre-baking. Discover a world-class solution for cleaning ovens, mixers, conveyor belts, molded products, and more, ensuring hygiene and quality.
Delight in the immaculate cleaning of packaging equipment, furnace racks, plates, containers, rollers, refrigerator walls, biscuit grates, and a plethora of other essentials.
4.Automotive and shipping industry: Revolutionize cleaning with dry ice technology, which effectively cleans car door covers, canopies, carriages, and bottom oil stains without any water residue, thus preventing water pollution. Effortlessly clean carburetors, remove paint from car surfaces, and eliminate engine carbon deposits on vehicles and ships.
Say goodbye to prolonged processing times and harmful chemicals with a process that resolves carbon deposition remarkably within 10 minutes. Witness unparalleled efficiency with a descaling rate of up to 100%, significantly saving time and costs.
Achieve superior cleanliness on the hull, seawater intake valve, seawater condenser and heat exchanger, engine room, and mechanical and electrical equipment.
5.Aerospace field: As a sophisticated solution for the aerospace industry, dry ice cleaning enhances pre-production processes such as missile and aircraft painting and final assembly. Seamlessly remove paint from composite molds and special aircraft, clean engine carbon, and maintain critical areas like the landing gear wheel compartment. Efficiently strip paint off aircraft shells.
Optimize your jet engine conversion system with the ability to work directly on the body, saving you precious time.
6.Printing industry: Dry ice cleaning expertly removes both oil-based and water-based inks, varnishes, and persistent ink deposits. Maintain the pristine quality of printed products while ensuring longevity and performance of printing equipment by preventing wear and tear.
Safeguard your printing equipment from wear, enhancing both quality and efficiency.
Cultural relic cleaning: Experience the ultimate non-destructive cleaning method for cultural relics with dry ice technology, adept at removing pollutants like soil, soluble salts, mold, and sedimentary films. Compared to traditional methods, it enhances cleaning efficiency and quality while being environmentally friendly and safe for workers' health.
Combine excellent cleaning efficiency and quality with a sustainable approach that cares for the environment and worker health.
Cleaning method and working principle of CHIRUI pellet dry ice cleaning
Similar to abrasive methods like spraying steel sand or glass sand, dry ice blasting propels dry ice particles at high-pressure to impact and cleanse surfaces. This method stands out because...
The uniqueness lies in the remarkable vaporization of dry ice particles upon impact. This instantaneous momentum shift as dry ice particles transition during impact facilitates rapid thermal exchange with the cleaning surface, resulting in...
The swift sublimation of solid CO2 into gas, where dry ice particles expand approximately 800 times their size in a fraction of a second. This dramatic 'micro explosion' at the impact point highlights the distinct volatility 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 |
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