An original concept, the use of traditional
vibration techniques combined with tubular joule effect heating, allows
highly efficient and economic heat treatment of bulk solids.
This innovative technology called Vibrating
Electrical Elevator and Reactor can be used for the
on-line heating or cooling of bulk materials in the chemical, food
and environmental industries. In all cases, the material is carried
through a coiled tube by means of vibrations. The vibrations are
generated by two off-balance motors.See
the animation [flash5 - 326Ko]
In Heating
systems, the tube wall is heated by the passage of an electric
current (Joule effect); the hot tube then transfers heat to the
material.
In Cooling
systems, heat is removed either by natural convection between
the external surface of the tube and ambient air, or by forced convection
with a cooling fluid flowing in the space between an outer shell
and the tube.
Advantages :
• Cheaper than competing technologies (rotating
ovens, fluidised bed)
• Running costs similar or less than gas system
• Reduced maintenance costs
• Fully airtight enclosure of materials
• Very small thermal mass, operational conditions are reached quickly :
300°C in less than 6 minutes
• Flexible in use : Adjustable flowrate, residence time and temperature
• Completely safe for the operator: Low voltage and small amounts of material
within the system.
Specifications :
• Maximum operating temperature : 800°C
•
Transport speed : between 3 and 30 cm/s
• Residence time adjustable between 30 seconds and 45 minutes
• Tube diameters : up to 219 mm
• Lifting height : 8 meters maximum
• Throughput : from 10 Kg/hour to several tons per hour
