Dry ice is the generic name for solid carbon dioxide (CO2), a natural component of earth’s atmosphere.
Dry ice is pure, solid carbon dioxide (CO2). As a gas, CO2 exists naturally in our environment. Dry ice goes directly from a solid to a gas in a process called sublimation. CO2 used to make dry ice is recycled from Refining Waste Gas and Ammonia manufacturing, and ethanol. CO2 is captured, compressed into a liquid, and then shipped to many industries, including dry ice production facilities. Dry ice keeps items colder for much longer than traditional “wet ice” because dry ice is extremely cold, -109 degrees F (-78.5° C).
Dry ice sublimates into carbon dioxide gas instead of melting, leaving no liquid mess to clean up which is why dry ice blasting is a popular and environmentally friendly way to clean.
DRY ICE BLASTING FOR CLEANING
Dry ice blasting is an innovatory blasting technique that uses solid dry ice as the blasting media.
Environmentally responsible dry-ice-blast cleaning and product finishing systems eliminate the use of harmful solvents and other waste-generating cleaning processes. Dry ice is the solid form of carbon dioxide (CO2), which is colorless, tasteless, odorless gas found in the atmosphere with the temperature of minus 79 degree Celsius. It is non poisonous and are made from food grade carbon dioxide the same used in food and beverage industry.
Dry-ice-blast cleaning utilizes a unique combination of forces to powerfully lift surface contaminants without causing damage or creating harmful secondary waste. Similar to sand, bead and soda blasting, dry-ice-blast cleaning prepares and cleans surfaces using a medium accelerated in a pressurized air stream. pressurized air stream.
Instead of abrasive media to grind surfaces (and damage them), Cold Jet systems use dry ice (solid CO2) accelerated at supersonic speeds that sublimate upon impact and lift contaminates from substrates. Treated surfaces are therefore left dry and clean, without residues or blasting materials. Dry ice blast cleaning is a non-abrasive, non-flammable non-conductive and non-toxic cleaning method.
From gently restoring smoke damaged books, to cleaning multi-million dollar production equipment in place, Cold Jet dry-ice-blast cleaning equipment systems, nozzles and accessories can tackle your toughest cleaning challenges head on.
Dry ice blasting systems can be used for general and preventative maintenance, cleaning power cabinets, splatters on walls paint, etc. It can also be incorporated into a preventative maintenance plan. When consistently used it has been proven to extend machine life span, reduce part breakage and overall it makes sure that machines are reliable to keep up with production demand.
How Does Dry Ice Blasting Work?
High Motive Power Effect (Pellet Kinetic Energy)
A high motive power is applied (Pellet Kinetic) for removal of substrates. The high motive power has a great impact force that propels CO2 pellets to high velocity attained in the blasting industry but has minimal effect on these solid CO2 pellets as compared to other medium such as sand or grit.
Rapid temperature Change Effect (Thermal Shock Effect)
Rapid temperature transformation of CO2 pellets changes the pellets from a solid form to gas. This allows maximum heat to be absorbed into micro-layers within the coating/contaminant resulting it to fall loose from the surface of the substrate.
Synergised Energy Effect (Thermal-Kinetic Effect)
The synergy of both high motive power (pellet kinetic energy) and rapid temperature change effects (thermal shock effect) between the pellet and surface of the substrate causes the CO2 gas to expand outwards at a rapid pace. This results in a high-pressured ‘micro blast’ which efficiently lifts/removes the particles away from the surface of the substrate.