Level and pressure measurement in gas scrubbers
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Gas scrubber
Level and pressure measurement in gas scrubbers
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Process data
Measuring task
Level and pressure measurement
Measuring point
Tank
Measuring range up to
20 m
Medium
Solvent (aniline)
Process temperature
+20 ... +120 °C
Process pressure
+1 … +200 bar
Special challenges
Diffusion, high pressures
Application
Carbon dioxide is separated from a gas mixture via two scrubbing columns. The gas mixture consisting of nitrogen, hydrogen and carbon dioxide passes through a gas pipeline into the first stage gas scrubber. An added solvent, usually aniline, binds with the carbon dioxide, which is then forwarded in liquid form to a gas scrubber or ‘desorber’ where it is “washed” out of the liquid. The process pressure is monitored during the absorption process, which takes place at high pressure and low temperature. The actual separation of the carbon dioxide from the liquid, however, is carried out under low pressure and high temperature, where the level of the liquid needs to be kept as constant as possible.
Your benefit
Reliable
Reliable measurement, independent of the process conditions
Cost effective
Resistant materials deliver long service life
User friendly
One sensor, two measured values: ceramic cell measures temperature and pressure
Recommended products
VEGABAR 83
Pressure transmitter for monitoring pressure in the gas scrubber
- Reliable measurement independent of high pressures
- High chemically resistant measuring cell ensures long-term plant operation
- Special seals prevent diffusion by ammonia
Measuring range - Distance
-
Measuring range - Pressure
-1 ... 1000 bar
Process temperature
-40 ... 200 °C
VEGABAR 82
Level measurement by means of electronic differential pressure
- Reliable measurement independent of tank internals
- Integrated temperature sensor saves cost of additional temperature measuring instruments
- Excellent plant availability with high overload capacity ceramic CERTEC® measuring cell
Measuring range - Distance
-
Measuring range - Pressure
-1 ... 100 bar
Process temperature
-40 ... 150 °C
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