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Gas Absorption- Engineering Lab Training Systems.
Technical Description
Absorption involves separating one or more gas components from a gas
flow using a solvent.
First of all, a CO2 and
air gas mixture is produced. It is possible to adjust the mixing ratio
using valves. The flow rates of the gas components are displayed by
rotameters.
A compressor delivers the gas mixture into the lower section of the
packed column. In the column, part of the CO2 is separated in the
counter current with the solvent. Water is used as the solvent. The
CO2 is
absorbed by the downward flowing water and the charged water is then
fed from the lower section of the column into a collecting tank. To
separate the absorbed CO2, the charged water is delivered
from the collecting tank into a vacuum tank. As the pressure is reduced,
the solubility of the CO2 falls causing the CO2 gas
to be emitted from the water. A centrifugal pump then delivers the
regenerated solvent back into the collecting tank. From there, it is
delivered back to the upper section of the column by a further
centrifugal pump.
The two-section column is equipped with
measuring connections to determine the pressure losses. The pressure
loss in the respective sections can be displayed via 2 U-tube
manometers. To evaluate the success of the process, the system includes
outlets for taking gas and liquid samples. The gas samples can be
analysed using the hand-held measuring unit supplied.
The
well-structured instructional material sets out the technological
fundamentals and provides a step-by-step guide through the measurements
and experiments.
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