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Flue gas scrubber

LevelDifferential Pressure
Flue gas scrubber

Overview

Flue gas from waste incineration must be cleaned before it is released into the environment. Flue gas scrubbers do this by removing acidic gas components such as sulphur dioxide. Lime water is used as the washing solution and it is sprayed in against the flow of the gas. The lime deposits filtered out of the washing water are used as gypsum, e.g. for the production of plasterboard. To ensure a continuous scrubbing process, a constant level in the scrubbing tower is required.

Operating Conditions

Measuring Task
Level measurement
Measuring Point
Scrubbing tower
Medium
Lime water, flue gas
Measuring Range
4 m
Temperature
+30 … +50 °C
Pressure
+0.2 … +0.4 bar

Challenges

  • Turbulent product surface, vacuum, buildup, low liquid level

Benefits

  • Reliable: Reliable function, even with a turbulent product surface
  • Cost effective: Economical solution without capillary tubes
  • User friendly: Front-flush mounting avoids buildup and enables a maintenance-free measurement

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