Gas Absorption Column Description and Specifications for Lab Tenders
Gas Absorption Column.
Gas Absorption Column This apparatus is used to determine the air pressure differential across
the column as a function of air flow rate at different water flow rates
down the column, and flooding point can be noted.
Absorption process of
carbon dioxide from air-CO2 mixture into caustic soda solution, is also
studied using this system.
The system components are mounted within a
floor standing painted steel framework.The wetted wall column is a
glass column with water inlet and outlet sections and is gimbal mounted
to ensure that it can be set accurately vertical.The deoxygenating
column is of similar overall size to the wetted wall column, standing
vertically adjacent to it. Beside the columns is a control console
housing flow meters, pump controls and oxygen analyser. Situated between
the columns are two special housings containing the oxygen analysis
probes which monitor the oxygen content in the water entering and
leaving the absorption column. The apparatus uses water as the working
medium, contained in a storage tank at the rear of the unit. Pumps
delivering water to the deoxygenator and the absorption column are
located at the base of the unit.Dissolved oxygen at inlet and outlet can
be measured in rapid succession. The water drains into the storage tank
to be recycled to the deoxygenator. In operation, water is sparged with
nitrogen in the deoxygenator before entering the top of the wetted wall
column. Air is pumped by the integral diaphragm type air pump into the
base of the column. The air passes up the column, giving up the oxygen
to the water.
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