Our supercritical CO cleaning machines

Their capacity and cleaning and decontamination conditions, as well as the number of autoclaves, are adapted to the needs of each manufacturer and are the subject of specific specifications. The size of the machines and the cleaning chamber can vary according to production rates and part dimensions.

Dedicated machine ranges for every application

Implant dentaire

Machines specially designed for the decontamination of medical devices

Our machines are designed for cleanroom cleaning and decontamination of all medical devices and parts requiring extreme cleanliness.
Our machines can comprise from 1 to 4 decontamination chambers located in one or more cleanrooms, operating with a single machine body.
The machine body is located outside in a technical room, more than 50 meters from the cleaning chambers.
As an option, and to enable a departiculation action, the cleaning chambers can integrate an agitation system and ultrasound.

A single CO2 treatment can replace several washing operations using detergents and/or Soxhlet ether or other organic solvents.
Washing time is divided by 10, and operating costs are divided by 4. By reducing the biological load (Bioburden), the final sterilization time can be reduced by one of the processes currently approved by health authorities.

Machine features :

  • Number of cleaning chambers in series: from 1 to 4 autoclaves
  • Internal cleaning chamber volume: 4L, 6L, 13L, 21L, 30L
  • Easy installation in cleanrooms (ISO 5 and +)
  • Pressure range: 150 to 300 Bar
  • Options: ultrasounds, agitation
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Through-the-wall machine - DFD-MD 6.1

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Machine MD-4 to 30

The world's 1st through-the-wall supercritical CO2 equipment

Dense Fluide Degreasing is the 1st manufacturer in the world to have designed supercritical CO2 machines for cleanroom wall crossing.

This 6-liter through-the-wall cleanroom model enables dirty or contaminated medical devices to be loaded on the gray room side, and cleaned and decontaminated medical devices to be unloaded in the cleanroom.

Thanks to supercritical CO2 technology, medical devices are pre-sterilized.

Photo Machine porte autoclave côté salle blanche

Autoclave door on cleanroom side

logo bobines textile

Machines adapted to the dimensions of the textile industry

Our TX range of machines is suitable for web widths of up to 3 meters and roll diameters of up to 600 cm, including the warp beam. Supercritical CO2 technology can be used to de-oil, dye and coat all types of textiles (medical and non-medical) in reel, roll or bulk form.
For processing bulk textiles, our machines are equipped with an agitation system.

Using supercritical CO2 technology for textile finishing offers many advantages:

  • Eliminate water consumption
  • Eliminating polluted discharges
  • Reduced processing times
  • Reduced shrinkage compared to water-based processes

Machine specifications :

  • Number of cleaning chambers in series: from 1 to 4 autoclaves.
  • Internal cleaning chamber volume: 105L to 850L
  • Pressure range: 60 to 300 Bar
  • Reduced shrinkage compared to water-based processes
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Machines designed for the high production rates of the mechanical engineering industry

Perfectly suited to the degreasing and departiculation of mechanical parts, our MC range machines are optimized to meet the challenges of high-speed cleaning.

With supercritical CO2 technology, it's possible to degrease and departiculate the outside and inside of any type of part, including complex parts with blind holes, tubing, etc.

Our experience in the cleaning field has led us to design machines with horizontal loading, equipped with a basket agitation system with oscillation or complete rotation at variable speed. For specific requirements, cleaning chambers can be equipped with ultrasounds.

Machines in the MC range can be compact, or with a machine body located at a distance from the cleaning chambers. One machine body can operate from 1 to 4 autoclaves, depending on throughput rates and part volumes to be processed.

Machine specifications :

  • Number of cleaning chambers in series: from 1 to 4 autoclaves
  • Internal cleaning chamber volume: 4L, 83L, 105L
  • Fully automatic/robotic opening/closing
  • Agitation (rotation or oscillation) and ultrasound
  • Pressure range: 150 to 300 Bar
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DFD MC 4.1

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DFD MC 83.1

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DFD MC 105.3

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Optimized machines to process plastic and metal materials for recycling

With a wealth of experience in the design and manufacture of industrial equipment, we have adapted our machines to meet the constraints imposed by the size of the plastic deposits to be depolluted or the metal chips to be degreased.

The machines in our MR range are capable of operating 24/7, with only a few days downtime for annual maintenance.

Machine specifications :

  • Number of cleaning chambers in series: from 1 to 5 autoclaves
  • Internal cleaning chamber volume: 560L
  • Automated and robotized filling / emptying of materials
  • Pressure range: 150 to 400 Bar
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Your questions?

Our answers!

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Where are Dense Fluid Degreasing machines manufactured?
Dense Fluid Degreasing est une société spécialisée dans la conception, l’assemblage, la fabrication et l’entretien de machines de nettoyage (dégraissage, départiculaDense Fluid Degreasing specializes in the design, assembly, manufacture and maintenance of cleaning (degreasing, departiculation, decontamination, sterilization) and extraction machines using supercritical CO2.

100% of pressure equipment is subcontracted in France, and whenever possible, supplies are made in France.

Our machines are assembled in Clermont-Ferrand.
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Are Dense Fluid Degreasing machines compatible with cleanrooms?
One of Dense Fluid Degreasing's specialties is the design and manufacture of machines perfectly adapted to cleanrooms. This is achieved in several ways:
  • Respect for materials: metals such as 316 L stainless steel are used for the autoclave block. This minimizes the risk of corrosion, for example when cleaning machine surfaces with alcohol.
  • The through-the-wall option: Dense Fluid Degreasing is the first supercritical CO2 machine manufacturer in the world to have designed and manufactured a through-the-wall machine for decontaminating implantable medical devices using supercritical CO2. This version of the machine can be loaded in a workshop or gray room and unloaded in a clean room.
  • The distance between the various components of a machine: the autoclave block and the technical unit can be installed up to 50 meters apart. In the same way, a Dense Fluid Degreasing machine can be made up of several autoclaves, themselves 50 meters apart and attached to a single technical unit.
  • Compliance with safety standards imposed in the specific context of cleanrooms (ISO 5/7)
  • The composition of the machines: these are broken down into at least two elements, namely the autoclave block located in the cleanroom, and the technical unit located in a workshop or technical area adjacent to the cleanroom. In this way, only the cleaning chamber and its mandatory components are introduced into the cleanroom. The treatment of extracted pollutants is carried out in the off-site technical unit, which also provides a solution to the recurring problem of limited available space in the cleanroom.
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How much does a Dense Fluid Degreasing or Supercritical CO2 extraction machine cost?
A supercritical CO2 extraction or cleaning machine is a special machine that operates in a profoundly different way to cleaning machines based on conventional water-based or petrochemical solvent-based processes. Our machines operate under pressure and at low temperatures. Supercritical CO2 technology offers dry, water-free treatment, without the need for petrochemical solvents.
Dense Fluid Degreasing's strength lies in its ability to tailor its machines to the specific needs of each client in its ability to design machines to meet the specific needs of each industrial customer.
Criteria such as :
  • the daily volume to be treated
  • the various options required
  • space constraints to be respected
  • machine operating rhythm (1x8, 2x8, 3x8, number of working days)
  • parameters from validation tests
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What is the CO2 consumption of a Dense Fluid Degreasing machine?
CO2 consumption depends on several factors:
  • the level of solvent required for cleaning or extraction
  • autoclave size
  • specific recovery options
As a general rule, our machines recycle at least 90% of the CO2 consumed during a cycle. The remaining 10% of CO2 is considered lost and vented.
The loss per cycle is low, corresponding to 10% of the autoclave volume. For example, for a 4-liter autoclave > ~400g of CO2, for a 20-liter autoclave ~1.8kg of CO2, etc.

CO2 consumption will also influence the choice of storage method. This can be in cylinders, spheres or tanks.

Cylinders are ideal for occasional use or for small machines (approx. 4L, 6L, 20L), or when CO2 storage is complex.
Cylinders are easier to handle and take up less space than spheres or a tank, while spheres contain more CO2 to meet the needs of a larger or more frequently-operating machine. CO2 spheres are an easy-to-implement and viable storage solution for consumption of less than 3.5T per year, while the tank solution is recommended for machines that operate intensively. However, it requires more extensive preparation and installation, as the CO2 tank can only be stored outdoors.
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How much does CO2 cost?
The CO2 used is not produced by the machines themselves. It is originally a forced emission generated by many industries. Once generated, it can be captured and purified by the gas industry for use in other applications. The CO2 used in supercritical CO2 cleaning or extraction machines is the same as that used to carbonate most soft drinks, and its price will vary according to :
  • its cogeneration site,
  • its place of purification
  • its place of use
  • storage method: in bottles, spheres or tanks.
As an indication and depending on the gas supplier, the price of CO2 delivered and stored in a tank varies between €250 and €450 per tonne on average. Prices vary according to delivery distances. The price of CO2 delivered in cylinders or spheres varies between €1,200 and €1,600 per tonne.
The price difference is explained by the handling and packaging costs that are added when using cylinders and spheres.
Equipementier spécialiste du CO2 supercritique

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