Transfer a component between gas and liquid phases.
Absorption removes components from a gas by dissolving them in a liquid (scrubbing CO₂ with amine, SO₂ with water); stripping does the reverse by gas contact. Packed or tray columns; design uses equilibrium and operating lines, HTU/NTU or HETP and flooding limits.
Amine scrubbing captures CO₂ from flue gas.
Absorption and stripping move a component between a gas and a liquid, which is used to remove pollutants and recover valuable gases.
Transfer a component between gas and liquid phases.
Absorption and stripping move a component between a gas and a liquid, which is used to remove pollutants and recover valuable gases.
Transferring a gas component into a liquid solvent, which can be reversed by stripping.
A difference between the gas partial pressure and the equilibrium value in the liquid, so more solvent or more contact area increases the rate.
Typical applications include removing carbon dioxide from natural gas with an amine solvent, scrubbing sulphur dioxide from a flue gas before release and stripping dissolved gases from water in an air stripper.
Study "McCabe-Thiele method" first (topic 73 of 100 in Materials & Chemical). It covers the groundwork this topic builds on.
Henry's law. Minimum liquid rate. Chemical absorption enhances capacity.
Amine scrubbing captures CO₂ from flue gas.
The next topic is "Liquid-liquid extraction", which builds directly on this one.
It is classed as Advanced in Materials & Chemical (topic 74 of 100). It is an advanced topic. It assumes you are comfortable with the intermediate topics in Materials & Chemical.
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