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Dewatering column

Level
Dewatering column

Overview

The waste oil is heated to a temperature of 105 °C in the lower section of the column. Here, the water evaporates and is pumped away after it condenses. After reaching the appropriate temperature, the oil is transported through pipes to the upper part of the column, where the remaining water vaporises. For optimal dewatering, a defined level is required in the column. As the oil surface is very turbulent due to the action of pumps and heating, making level measurement directly inside the column practically impossible. For that reason it is done in a bypass tube.

Operating Conditions

Measuring Task
Level measurement
Measuring Point
Dewatering column
Medium
Waste oil
Measuring Range
2 m
Temperature
+20 … +105 °C
Pressure
0 … +1 barbar

Challenges

  • Turbulent surface due to pump action and heating, fluctuating medium properties, deposits and buildup

Benefits

  • Reliable: Reliable measurement enables dependable operation of the column
  • Cost effective: Optimal dewatering performance through defined level
  • User friendly: Measurement independent of medium properties

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