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ATFD Dryers

Temperature Range:

50°C – 85°C

Drying Capacity:

10 L/hr to 1,000+ L/hr

Material of Construction:

SS316L / Hastelloy / Duplex Steel

Agitator Types:

PTFE blades, rigid or flexible scrapers

Energy Source:

Electricity (No boiler required)

Automation:

PLC + HMI, SCADA optional

Heat Recovery:

Built-in for maximum efficiency

Our Heat Pump Assisted ATFD (Agitated Thin Film Dryer) systems are designed for drying high-viscosity, concentrated, and heat-sensitive materials in an energy-efficient and environmentally friendly way. By combining the proven drying mechanism of ATFDs with a low-temperature heat pump circuit, this technology significantly reduces energy consumption while ensuring gentle, uniform drying.

What Is a Heat Pump ATFD?

A traditional ATFD dries viscous slurries or pastes using high-temperature thermal energy, typically from steam or thermal oil. In our heat pump-integrated ATFD, this thermal energy is supplied by a closed-loop heat pump system, enabling low operating temperatures of 50–85°C, up to 60% energy savings, and complete elimination of steam or fossil fuel requirements. Its compact, fully enclosed design makes it ideal for handling heat-sensitive or explosive materials safely and efficiently.

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Sustainable, Safe, and Scalable

Heat pump dryers are ideal for organic, export-grade, and specialty food processors looking to meet high quality standards while keeping operating costs and environmental impact low.

Industrial Process Diagram

Applications:

  • Pharma Intermediates & APIs
  • Chemical Slurries and Extracts
  • Spent Solvents and Resin Solutions
  • Food Pastes, Syrups, Extracts
  • Evaporator Bottoms (High TDS/COD Effluents)
  • Wastewater from Zero Liquid Discharge (ZLD) Systems

How It Works:

  • Feed Introduction: Viscous or slurry feed enters the ATFD drying chamber.
  • Thin Film Formation: A rotating agitator spreads the feed into a thin film along the heated wall.
  • Heat Supply via Heat Pump: Hot water or vapor, generated by the heat pump condenser, indirectly heats the ATFD surface.
  • Evaporation: Water evaporates at low temperature; the vapor is condensed via the heat pump evaporator.
  • Product Discharge: Dry powder or solid flakes are scraped off and collected.

Advantages at a Glance

Low-Temperature Drying Ideal for thermally sensitive products
High Energy Efficiency COP 3.5–4.5, low OPEX
No Combustion or Steam Safer, cleaner operation
Modular Design Easy integration with existing systems
Clean & Enclosed Process No emissions, no odor, minimal operator handling