BOC has initiated a new, flexible industrial cleaning method which combines dry ice blasting, using carbon dioxide (CO2) dry ice crystals, and sand blasting.

Developed by the UK-based company and its parent, the Linde Group, the CRYOCLEAN® snow+ industrial cleaning process is a completely dry cleaning process in which liquid CO2 is pressurised to 60 bar, creating tiny dry ice crystals. These are then blasted onto components using compressed air and lifts contaminants off the surface, expelling the excess through exhaust systems.

By changing the ratio of CO2 and abrasive material, the operator can adjust the intensity of the cleaning process to match the condition of the surface. BOC has regulated this flexibility to be able to handle relatively clean areas followed by heavily contaminated, chemically altered or even corroded zones, in one single process.

Cryoclean boc dry ice


A key positive for CRYOCLEAN, is that it boasts a friendlier carbon footprint of around 20m2,with a cleaning time of roughly 30 seconds compared to traditional water-based methods, where processes can take up to 10 minutes and can generate a footprint of around 100m2. Additionally, the CO2 used in the method is a by-product from BOC’s existing customer manufacturing processes which has been purified before being re-used with the CRYOCLEAN process, and it achieves the required cleaning results by using only the correct amount of abrasives in order to reduce wastage.

Stuart Wilders, BOC’s Market Sector Manager for Advanced Manufacturing, highlighted, “This innovative new technology delivers the same standard of cleaning faster and more efficiently than traditional wet cleaning. It is also more environmentally friendly and requires a smaller footprint.”

This process is designed to cater for several sectors such as the automotive, metal and machine construction, plastic manufacturing and steel industries, in order to clean industrial products like machinery, process equipment and conveyor belts.