Adsorption with Dry Regeneration

Adsorption with Dry Regeneration

Adsorption with Dry Regeneration

Adsorption with Dry Regeneration is an integrated system with enhanced features for volatile organic compounds desorption.


    • No byproducts
    • Flexible solution
    • Easy treatment
    • Eliminates secondary emissions
    • 360° process solution
    • Reduced energy consumption


  • Uses beds of materials like activated carbon, macroporous polymers, and zeolites
  • Adopted for the abatement of VOCs (products, solvents, fuels, etc.)
  • Used as a guard or finishing step after final treatment facilities
  • Proprietary technology is based on hot nitrogen regeneration (also under vacuum) in a closed loop in order to enhance environmental protection and safety
  • A saturated and reduced flow of nitrogen is sent to the cryogenic condensers for VOC condensation, which discharges only pollutant-free streams into the atmosphere


  1. No Byproducts: By using nitrogen instead of steam, there is no generation of wastewater that requires additional treatment to separate pollutant compounds. This is particularly advantageous when components create azeotropic mixtures that require costly separation.
  2. Flexible Solution: The plant is highly flexible and can handle various stream flowrates and VOC concentrations. The unit can work in a wide range of operating scenarios with minimum impact on normal operating costs. The automatic control system allows the plant to easily adapt to new working conditions.
  3. Easy Treatment: As a recuperative technology, solvents are collected in liquid form in a dedicated tank, thus allowing customers to reuse them as they are, purify them for further reuse, or easily collect them as waste without generating any additional by-product or contaminating/creating wastewater.
  4. Eliminates Secondary Emissions: Polaris’s technology is based on the condensation of pollutants, therefore there are no secondary emissions (CO, NOx, etc.) created as happens with other non-recuperative technologies. This also eliminates the need for a second stage of purification, saving time, money, and the environment.
  5. 360° Process Solution: If combined with our Internal Reflux Column, it is possible to achieve the contemporaneous fractionation of the different components in the same facility.
  6. Reduced Energy Consumption: By using macroporous polymers as the adsorption material, the overall energy consumption is reduced thanks to the weaker bonds of adsorption in comparison with those of activated carbon.

Typical Plant Configuration

  • Requires a small footprint
  • Plant consists of adsorbent tanks and a small cryogenic condensation unit
  • Skid-mounted and supplied as a packaged unit

Check out our other Cryogenic Technologies.