Page 105 - Packed bed columns for absorption, desorption, rectification and direct heat transfer
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In investigation of the liquid-side controlled mass transfer using
desorption of CO2 from water as model system, the small head tank (25) is used.
The liquid after the pump (22) enters the pipe (23), where through the valve
(26) CO2 from the gas bottles (27) is fed. (The respective pipe is not presented
in Fig. 2.) The carbon dioxide is separated in the head tank (25). Through the
pipe (24) the saturated water flows to the ratameters (18). The surplus water
overflows through the pipe (13) in the bottom of the column (7).
A photograph of the experimental column with a diameter of about 500
mm is presented in Fig. 3.
Fig, 3, Photograph of the experimental column with a diameter of about 500 mm at the author's
laboratory at the Institute of Chemical Engineering of the Bulgarian Academy of Sciences.
In some experimental installations [86] it is proposed to humidify the
air before entering the investigated column in an additional packed bed column.
I have never used such a column in my investigations on the basis of the
following considerations:
