Gas
Plants
Buyer's
Guide
Carbon dioxide is present with certain contaminants in air. There are several processes to test the purity of carbon dioxide for efficient use in the air separation plants.
CO2 Test Using Wittemann Stripping Column
- Co2 is liquified and is fed to a Wittemann stripping column.
- Liquid CO2 flows down through a special packed bed.
- Pure vapor of CO2 flows up.
- Pure vapors strips the non condensables from the liquid.
- Impure stripping vapor CO2 is recondensed in a new stripping
column.
- Non condensables are purged to atmosphere through a control
valve.
- Pure liquid CO2 flows by gravity to the storage tanks.
- Pure vapor can also be pumped using reliable vane axial positive displacement pumps.
This tester consist of :
- A glass container filled with caustic soda solution.
- A glass burette mounted on a yellow, cadmium free and inert
synthetic baseplate.
- Teflon stopcocks
- Unbreakable plastic sheet
- Take a CO2 sample.
- Allow the gas to be absorbed by caustic soda.
- Inverse the purity tester.
- The percentage volume of pollutants is read in the gas burette.
- The caustic soda remains in the glass container.
