Thermal waste processing - radar sensor monitors ash removal
Process data
Measuring point:
Stainless steel container with chute
Measuring range up to:
approx. 2.5 m
Medium:
Hot ash
Process temperature:
40 ... 200 °C
Special challenges:
Vacuum, narrow chute, unfavourable measurement properties of the ash
Application
Thermal waste processing converts household and commercial waste into useful products. One very effective method combines pyrolysis and gasification. The pyrolysis is carried out at temperatures up to 500° C in the absence of air. The intermediate product, charcoal, is then gasified by adding air. The end products are high-quality fuel gas for power generation and ash as an additive for the construction industry.
Reliable, continuous operation of the system requires exact monitoring of the de-ashing process. The ash container must be emptied when necessary and backup due to bridging in the chute avoided. For the deployed measuring system, the unfavourable measurement properties of the ash and the narrow passage in the chute represent a real challenge.
Recommended products
VEGAPULS 69
The ideal solution for this application is the radar sensor VEGAPULS 69. With its small beam angle, the instrument measures with extreme precision through the narrow chute down to the ash container. Thanks to the high dynamic range of its measuring method, it gathers level data reliably in spite of the poor reflectivity of the ash. The non-contact measuring method also makes the instrument virtually maintenance free.
VEGAPULS 69 prevents backup and ensures that the ash container is always emptied at the right time, guaranteeing reliable, continuous operation of the plant.
User benefits
User benefits
- Reliable backup detection in the chute for reliable, continuous operation of the plant
- Emptying on demand ensures optimal utilization of the ash container
- Simple conversion of existing measuring points
- Low maintenance requirements thanks to non-contact measurement
Measuring range - Distance
120 m
Process temperature
-40 ... 200 °C
Process pressure
-1 ... 20 bar
