Supercritical CO2 technology has been used to extract natural substances since the second half of the 20th century.
Thanks to our machines and know-how, this technology is now open and accessible to a wide range of industries.
After heating and pressurizing the carbon dioxide (above 31°C and 73 bar), it reaches the critical point. Once beyond this point, CO2 is in an intermediate phase between the liquid and gaseous states, benefiting from the properties of both.
It is almost as dense as a liquid and adopts the transport, viscosity and diffusion properties characteristic of gases. It can therefore be used as an apolar solvent.
It is to this solvent that the parts to be treated are exposed for cleaning and decontamination in our machines.
As a manufacturer of special machines, our job is to concentrate complex technology in a machine that is ultra-easy to use and accessible to all.
Originally developed by the French Alternative Energies and Atomic Energy Commission (CEA) for nuclear decontamination, this cutting-edge technology is the subject of 8 patents, with 1 being exclusively licensed by Dense Fluid Degreasing.
The innovations incorporated into our initial cleaning or extraction machines have led to an additional 4 patents.
Supercritical CO2 is non-toxic, eliminating the risks associated with chlorinated or petroleum solvents. Its intrinsic safety makes it ideal for demanding industries such as the medical, precision engineering, and textile and recycling industries.
Supercritical CO2 is non-flammable, reducing the risks of fire and security costs in industries where flammable materials are common.
Supercritical CO2 is chemically inert and non-corrosive, preserving the integrity of products and extending the lifespan of equipment used.
This green solvent, odorless and colorless, is an eco-friendly solution with no emissions of volatile organic compounds (VOCs). It requires neither authorization nor declaration for Classified Installations for Environmental Protection (ICPE) and is not classified as ATEX, eliminating the risks associated with explosive atmospheres. Furthermore, it is free from co-distillation risk and complies with REACH regulations as well as recommendations from CARSAT and DREAL, ensuring its safety for health and the environment.
The process doesn't use water and therefore requires no drying. It combines the low viscosity and high diffusivity of a gas with the high density of a liquid. Throughout the entire cleaning cycle, supercritical CO2 is purified by gravity separation, and all pollutants are extracted in their pure form to be processed in specialized recycling channels.
The process is suitable for treating all metals and most polymers. It is particularly well-suited for handling complex part geometries, including parts with blind holes, internal passages, assembled components, very small internal diameters, textiles, and more.