Dryer plant safety
From the past, it has been generally assumed that convective drying systems are hazardous, while fearing the risk of fire (and dust) explosion and/or odour emissions. Vandenbroek International’s drying systems comply with the most recent CE regulations and ATEX standards for safety in dryer plant operations
Safety and Reliability in Drying Systems
The following features contribute to safety in drying plant operations:
- Low temperature of the dried product (80° - 90°C) because of the adiabatic drying conditions and the relatively low temperature (<110°C) of drum outlet gas.
- Fully treated outlet-gas flow of the dryer by dust separation and vapour removal using scrubber/condenser before recycling to the furnace takes place.
- The FISSIS® (Fully Integrated Self Supporting Intertisation) system, to control the inert conditions (4-8vol%O2) in the total drying system during start-up, stop and steady state operations.
In addition to the above-mentioned safety features, measurement instruments are installed to facilitate and control operational performance during process disturbances and calamities.
A few other (possible) measures are:
- Sprinkler system for fire protection, automatically controlled through temperature monitoring.
- Hold-up drainage system to empty all dryer equipment after calamities.
- Additional product cooling (45°C) to avoid selfheating during storage and external transport.
- Pressure relief panels in the de-dusting section (if necessary).
