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Advantages

  • Precise Control for Maximum Quality

    Advanced process technology (direct air heating + precise water addition) enhances Maillard reactions, reduces unwanted volatiles and prevents overroasting through fine reduction, ensuring maximum product quality.

    Close-up of an industrial coffee roasting machine with operator platform, cyclone inlet, and processing chamber.
  • Hygienic Design for Product Safety

    Best-in-class seal design ensures effective debacterization with CCP (Critical Control Point) monitoring. Use of fresh air for convective heating prevents contamination for maximum product safety.

    Close-up of stainless steel coffee processing equipment with pneumatic conveying pipes, valves, and process connections.
  • High Efficiency, Low Costs

    Integrated heat recovery, minimized hot air losses, and a precision burner provide best-in-class energy efficiency and ensure low operating costs.

    Overhead view of an industrial coffee roasting system with operator platform, process piping, and material transfer unit.
  • Low Maintenance, Maximum Availability

    Self-cleaning and low-maintenance design ensures high machine uptime, while optimized aspiration reduces product loss and further reduces maintenance.

    Industrial coffee roasting system with stainless steel process piping, cyclone components, and roasting chamber assembly.

Built to solve. Designed to deliver.

The Duyvis BRN Batch Roaster Nibs combines the benefits of high-capacity nib roasting with superior flavor development. Recipe changes can be easily made between batches.

The nibs are gently roasted in a rotating drum by thermal conduction, with direct contact between the product and the drum surface and no exposure to combustion gases. The hot air is evenly distributed around the drum, promoting an even temperature distribution along its length, allowing a slow, controlled drying process.

Direct air heating and precise water dosing optimize atmospheric control, enhancing Maillard reactions, reducing unwanted volatiles, and minimizing fines to prevent overroasting. Fresh air convection ensures safe, contamination-free processing.

Versions

 Duyvis BRN 3500sDuyvis BRN 3500iDuyvis BRN 5000sDuyvis BRN 5000i
Roasting capacity natural [40-60 min kg/h]3,500-5,2003,500-5,2005,000-7,5005,000-7,500
Roasting capacity alkalized [90-120 min kg/h]1,750-2,3001,750-2,300*2,500-3,3002,500-3,300*
Batch size [kg]3,5003,5005,0005,000
Connected load [kW]89104108123

*Throughput of > 10% can be obtained with additional air injection

Front and side views of an industrial coffee roasting system with roasting drum, process piping, cyclone, and operator platform.

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