benefits to your coffee
The roasting times of the NEPTUNE drum roasters lie between 8 and 20 minutes. As heat is applied to the coffee beans over a longer period, a particularly high level of flavor is developed. NEPTUNE drum roasters offer this and many other benefits:
- Uniform bean appearance and homogeneous roast through the combined application of heat via convection and conduction
- High roasting air intake temperature at a low flow rate
- Minimal amount of oil escapes to the surface of the bean
- Rapid, uniform cooling
- Reliable production from light to extremely dark roast colors
- Long roasting times with high production outputs
- Minimal product loss, minimal weight loss
- Specific design of the roasting drum allows for a gentle mixing of the beans
PERFORMANCE DATA - BEST LIFE-CYCLE COSTS AND PERFORMANCE
ENVIRONMENT & COST-EFFECTIVENESS
Different PROBAT coffee roaster systems make it possible to clean and reuse the thermal energy released during the roasting process. They are specifically tailored to the respective roasting process.
- Energy savings through recirculation of roasting exhaust air
- Energy savings and increased production through green-coffee preheating
- Reduction of product-specific odors and visible roasting exhaust
- Reduction of emissions and adherence to local thresholds through modular exhaust air treatment systems
- Maximum cleaning efficiency thanks to the Proforte exhaust air treatment system (flameless, renewable, thermal oxidation).
- Energy monitoring for cost transparency
- Heat recovery through the use of heat exchangers
- Minimal heat loss due to particularly well-insulated roasting system
- Thermal cleaning cuts human resource costs and saves time
SAFETY
PROBAT safety technology goes far beyond standardised requirements. We offer safety components that guarantee maximum process security.
- Ensuring the functional safety of your processing systems
- Flexibility thanks to a multistep safety system and the use of safety PLCs
- Maintenance-friendly safety components
- Thermal cleaning minimises deposits
- Online CO monitoring guarantees maximum safety within the roasting system
- Monitoring of cooling exhaust air temperature via thermocouple
- Safe operation with extremely dark roasts and low-quality green coffee
- Battery and water buffer increase operation safety
Safety
the drum roasting process
The heart of PROBAT’s NEPTUNE drum roasters is a horizontally lying roasting drum which is equipped with a rotary drive. Shovel blades circulate the coffee beans during the roasting process. The flame of a burner generates the energy for the roasting air which is guided both through as well as around the roasting drum by means of flaps. As such, heat is applied through conduction via the bean’s contact with the roasting drum as well as through convection via the hot incoming air. The addition of water systematically ends the roasting process while simultaneously precooling the roasted coffee.