Minimize water content, particle content and oxidation levels — in one process

Desorber-Filter-Unit D30CU from CJC®: Your solution for the separation of oil-water emulsions and oil recovery

Desorber-Filter-Unit D30CU, separation of oil-water emulsions, oil recovery
Desorber-Filter-Unit D30CU, separation of oil-water emulsions, oil recovery

Desorber-Filter-Unit D30CU

The D30CU desorber filter unit quickly and efficiently reduces the water content in your oils and fluids to < 0.01% while minimizing the content of particles and oil degradation products (acids, sludge, varnish). Whether hydraulic oil, gear oil, lubricating oil, machining oil, leakage oil or quenching oil, and whether mineral oil or synthetic fluid, the desorber filter unit D30CU separates even stable oil-water emulsions with a water content of 70% and enables the complete recovery of the oil. The D30CU operates continuously and independently of the operation of the machine in a separate off-line circuit or at a free-standing tank (24/7). The separation of oil-water emulsions is based on the principle of desorption. It occurs independently of viscosity and air content in the oil and has no impact on the additive package.

How to benefit from your CJC® Desorber Filter Unit D30CU

  • You remove free, emulsified and even dissolved water, separating any oil-water emulsion

  • You simultaneously remove particles and oxidation residues and thus rejuvenate the oil

  • You prevent oil ageing, loss of additives, acid formation and the spread of microorganisms

  • You ensure maximum wear and corrosion protection of the oil-lubricated parts of your machine

  • You achieve 3 to 4 times longer service life for oil and system components

  • You reduce unplanned downtime and maintenance costs while protecting environment and resources

Keeping oils and fluids as clean and dry as possible is the be-all and end-all for reliably functioning machines and smooth processes.

Application areas & installation example Desorber-Filter-Unit D30CU

Especially in the paper, steel, plastics and metal processing industries, as well as in maritime applications, there is a high risk of water entry into the oil systems due to environmental and process conditions.

installation, desorber-filter-unit D30CU, separation of oil-water emulsions, oil recovery

Fine filter system:
The pump in the oil inlet sucks in the oil. In the first stage, the fluid flow passes through the filter with the integrated fine and depth filter cartridge before it is fed into the desorber chamber in the second stage. Water but also particles in the oil accelerate the degradation of base oil and additives (oil ageing). The filter removes particles and already by oil degradation processes formed reaction products.

In the desorber chamber, the still moist, warm oil meets a counterflow of cold, dry air. The oil heats the cold air, which allows it to absorb a lot of moisture (system pressure constantly low < 2 bar). In a subsequent process, the warm, moist air cools down again, and the water condenses.

  • Hydraulic and hydrostatic systems
  • Gearboxes and lubricating oil systems
  • Oil recovering:
    • Machining oil
    • Leakage oil
    • Quenching oil
  • Mineral oil
  • Bio oil / environmentally acceptable lubricants
  • Ester
  • PAG (Poly Alpha Glycol)
  • PAO (Poly Alpha Olefin)
  • other synthetic fluids

Features — Desorber-Filter-Unit D30CU

Oil-water separator D30CU, Desorber Conditioning Unit

Oil volumen, dimensioning e.g.: 5,000 Litres

Installation: flexible, e.g. in the off-line circuit or on a free-standing tank

Viscosity range: up to ISO VG 320

Water content in the oil, max.: 700,000 ppm (70%)

Water separation: water content permanently < 100 ppm (0.01%)

Dirt holding capacity: up to 48 kg

Filtration degree, max.: 3 μm absolute to 1 μm

Fine and depth filter cartridge: 2 to 4 pieces

Supply voltage: 3 x 400 V at 50—60Hz or 3 x 440/480/575 V at 60 Hz

Power consumption: 3.6 kW

Current: 13.5 A

Capacity (24/7): 250-270 litres per hour

System pressure (suction side), max.: 0.5 bar

Dimensions, L x W x H: 1,300 x 740 x 1,620 mm



  • Pump with motor
  • electrical control with integrated alarm reporting system (e.g. pressure and leakage sensors)
  • Leakage monitoring
  • Continuous air vent
  • Sample point for oil or fluid analysis
  • automatic water separation


  • Air, water or coolant cooling
  • Second filter housing to increase dirt holding capacity

Download product data sheet:

All sizes and variants — without and with depth filter

Desorbers and desorber filter units, D30CU, separation of oil-water emulsions, oil recovery

That say our customers

Hydrostatische Systeme

“I am completely satisfied with the investment. Oil drying takes place very quickly and without machine downtime. Thus, we keep the production stable, have time to look for the failure cause, avoid the oil change and waste oil disposal, and maintain the oil quality.”

Read customer case

Head of Maintenance, Liebherr Components

The Desorber works excellently in this application. I was impressed by the results and surprised how efficiently the Desorber dewatered the oil. The Desorber is easy to operate and is low-maintenance.”

Read customer case

Engineer, Quenching plant
gear oil maintenance, thruster, harbour tug

The CJC® Desorber allows us to operate the tug boat until the regular inspection in the dry dock in 6 months. The oil analysis results speak for themselves and substantiate the efficiency of the Desorber.

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Regional Technical Manager, Harbour tug boat „VB PORNIC“
Gear oil filtration, thrusters, harbour tug

“It was only with the Desorber that the gear oil could finally be dried satisfactorily. Without CJC®, we would have had to change the 1,500 litres of gear oil soon. By avoiding the oil change, we were able to save EUR 4,890 (EUR 3.26/litre) – an important contribution not only in terms of budget but also in terms of resource savings. The excellent results convinced us, so we decided to purchase two identical Desorbers for our tug boats, “Bugsier 5” and “Bugsier 6”.

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Technical Superintendent, Harbour tug boat „BUGSIER-4“
mv island scout,

“The Desorber is ideal for such operations because it works continuously while the vessel is at sea. The results are very satisfactory. The Desorber works very well and will further reduce the water content.”

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Technical Inspector, Supply vessel „ISLAND SCOUT“

Write or call your regional contact person now

Let us start a conversation about your system, your oil, and the specific challenges. We are your experts for the separation of oil-water emulsions and the recovery of oils and lubricants.

Receive a personal consultation and a non-binding offer for a CJC® Desorber Filter Unit D30CU.

Write or call us.

oil samplels without and with cjc, oil dewatering, desorber
oil samplels without and with cjc, oil dewatering, desorber
oil samplels without and with cjc, oil dewatering, desorber