Refolution of exhaust air purification

3D model cold air machine 3D model cold air machine
HOF CryoProPhase - Cleaning and recovery of solvent-containing waste gases by means of cryogenic waste gas treatment flexibly customised to customer requirements

HOF Sonderanlagenbau and Refolution develop the HOF CryoProPhase for solvent recovery

Together with our partner HOF Sonderanlagenbau GmbH, we have developed a special process for recovering solvents from the exhaust streams of freeze-drying systems. The system is specifically designed for applications in freeze-drying and enables the condensation and recycling of organic solvents used in specialized lyophilization processes – for example, ethanol or tert-butanol, as well as corresponding water-solvent mixtures. Recovery occurs from one or more typical exhaust streams of the freeze dryer and supports both compliance with regulatory requirements and the reduction of emissions and operating costs. For humid or variable exhaust compositions, the system can optionally be equipped with spec

The cooling is achieved without the use of liquid nitrogen and exclusively with natural refrigerants. The required low temperatures are generated by the cold air cooling system from Mirai Intex.ial regenerative heat exchangers and an integrated regeneration cycle to ensure stable and energy-efficient process operation.

Planning, consulting through to the finished process plant

We develop the system to suit your process in order to recycle as much as possible and safely comply with legal requirements such as the TA-Luft. To do this, we start with our engineering and analyze your exhaust gas streams as part of an engineering project. We also assist you in preparing applications for authorities and work closely with you to obtain approval.When implementing the system, we collaborate with the company HOF Sonderanlagenbau, where you can order and have the system manufactured. When purchasing the system, the completed engineering is credited accordingly.

3D model cold air machine
3D model cold air machine
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The details of the HOF CryoProPhase

  • Condensing instead of filtering and burning

    In cryo-condensation, pollutants are condensed from the exhaust gas by cooling the exhaust gas line. The highly volatile components in the exhaust air flow are present as liquid condensate after the process and can either be fed back into the production process, purified or disposed of.

  • Safe and reliable cold air cooling technology R729 GWP 0

    The cold air chiller from Mirai Intex enables large dynamic load changes with high efficiency thanks to the infinitely variable turbo compressor expander unit. The required process temperatures can be flexibly set between -40 °C and -160 °C via the cold air chiller. The optimum condensation temperature can therefore always be individually selected for different process conditions.

  • Modular design for high flexibility

    The CryoProPhase has a modular design, which allows the process to be designed flexibly and makes optimum use of installation space. For example, the process lines can be positioned decentrally, while the cooling is provided centrally by the cold air chillers.

Reliable, durable, efficient and safe for people and the environment!

Your advantages at a glance

FUTURE PROOF
FUTURE PROOF

Air as a refrigerant is always available and is free of regulations.

FLEXIBLE
FLEXIBLE

Flexible setting of the condensation temperature between -40 °C and -110 °C, optionally up to -160 °C.

ENVIRONMENTALLY FRIENDLY & SAFE
ENVIRONMENTALLY FRIENDLY & SAFE

Ambient air only as refrigerant. Operating pressures up to a maximum of 10 bar overpressure.

LOW MAINTENANCE
LOW MAINTENANCE

Oil and wear-free thanks to the air-bearing compressor-expander unit of the cold air chiller.

MODULAR
MODULAR

Flexible process control and installation possible thanks to modular design.

EFFICIENT
EFFICIENT

Through refrigeration close to the useful temperature, efficient cold air cooling technology and energy recovery.

DYNAMICS
DYNAMICS

High efficiency and compliance with limit values even under dynamic process conditions

ECONOMIC EFFICIENCY
ECONOMIC EFFICIENCY

Most of the exhaust gases can be fully recycled and reused

Christian Berger

CSL Behring

Christian Berger · Global Director - Process and Technology Owner for Aseptic & Sterility

Refolution supported me in the technical verification of design and dimensioning of a Natural Refrigerant Cooling System for a new Freeze Dryer system.
I was very happy with the immediate support and competence of the Refolution Team. Thanks for your help.
Oliver Fleischer

HOF Sonderanlagenbau GmbH

Oliver Fleischer · Head of Service / Head of development - refrigeration technology department

With Refolution, the future of sustainability succeeds, coupled with efficiency and foresight.
The professional for the future.

Technical details & options

Technical information

Documentation

Download

  • - Air refrigerant for low temperatures, otherwise hydrocarbons or CO₂

    - Pressures of the cold air chiller up to a maximum of 10 barg

    - Flexible setting of the condensation temperature between -40 °C and -110 °C (optionally up to -160 °C)

    - Low maintenance requirements for the cold air chiller thanks to oil-free and wear-free, air-bearing compander unit

    - Flexible use thanks to modular design

    - High efficiency and compliance with limit values even under dynamic process conditions

    - Efficiency through refrigeration close to the useful temperature, efficient refrigeration technology and energy recovery

    - Most of the exhaust gases can be fully recycled and reused

  • HLK.co.at Specialist articles
    CryoProPhase brochure
    HVAC
  • CryoPrPhase brochure

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