What is Dry Ice?
Dry ice is solid carbon dioxide (CO2). It is made by pressurising, compressing and cooling gaseous CO2. Expansion converts the liquid into the snow form. The snow is then compressed into dry ice blocks, slices and extruded into pellet form.
It is totally moisture free ( contains NO water) & is -79 °
What is Dry Ice Blasting?
Dry Ice Blasting is an efficient and cost-effective way for industries to maximize production capability, reduce carbon footprinting and extend the life-span of hi value capital equipment.
In Dry Ice blasting, solid dry ice pellets or blocks are accelerated in a pressurized air stream to impact a surface to be cleaned or prepared.
Dry Ice Blasting is also known as Dry Ice Cleaning or Cryogenic Cleaning and is an eco-friendly cleaning process for industry which helps reduce downtime by up to 80%, increase equipment efficiencies, increase production and reduces the need for additional cleaning or preparatory work.
Dry Ice Blasting is a 3 step process:
- Kinetic– When Dry Ice Pellets are accelerated in a jet of compressed air & strike a surface at the speed of sound, they crack & loosen the coating of dirt on the surface being treated.
- Thermal – The low temperature of the Dry Ice Pellets (-79°C) makes the coating brittle, cracks it & loosens it. This allows Dry Ice to permeate the coating.
- Sublimation – Dry Ice penetrates the coating & immediately sublimates (passes directly from solid form to vapour state). This results in a 540 fold increase in volume which creates an explosive effect which lifts the coating off the treated surface while producing no secondary waste.
Key Features of Dry Ice Blasting
- Non-Conductive: meaning it can be used on electrical control panels, circuit boards
- Non-Abrasive: does not damage the surface of equipment being cleaned
- Non-Toxic: contains no chemicals
- Generates No Secondary Waste: changes from solid to gas form so only waste to be collected is the original contaminant
- Carbon neutral product: meaning it is environmentally responsible
As the process is completely dry, non-conductive and non-abrasive, surfaces are therefore treated very gently. Dry Ice Cleaning can therefore be used on easily-damaged surfaces like nickel, chromium, soft aluminium, graphite, rubber, plastics and even paper.
What are the Environmental Benefits of Dry Ice Blasting?
Dry Ice is obtained as a byproduct of other industrial processes made from reclaimed / recycled CO2. The Dry Ice Blasting process does not produce CO2 or add CO2 to the atmosphere and therefore does not contribute to the greenhouse effect thus making it totally carbon neutral.
Dry Ice Blasting is an approved cleaning process by the EPA, FDA and the USDA.
Using Polar IceTech’s Cryogenic Cleaning Technology has major advantages to the environment over traditional methods of cleaning including:
- Safely cleans waste from equipment which would otherwise be classed as hazardous waste.
- No chemicals, solvents, detergents are used in the Dry Ice Blasting Process.
- Cleaning a surface with Dry Ice Blasting decontaminates killing 99.9% of bacteria thus eliminating the need for secondary wipe down with chemical wipes on surfaces within the Food & beverage, pharmaceutical industry.
- Dry Ice Blasting creates a much safer workplace as workers are not exposed to potentially harmful airborne substances created through using chemicals or solvents.
While traditional industrial cleaning methods can result in the disposal and removal of ‘secondary waste’, consisting of chemicals, solvents, sand etc., the cleaning agent itself becomes a secondary contaminant that needs to be disposed of immediately.
Dry Ice Blasting eliminates the ‘secondary waste’ by simply sublimating / disappearing back into the atmosphere, eliminating the costs associated with the safe disposal of toxic / hazardous waste.