Liquid- Gas Absorption Progress test

What is the purpose of packed tower in a gas absorption unit?

• To purify sour (acidic) components from the polluted gas.

• To remove alkaline from the solvent.

• To recover solvent after gas absorption process.

• To purge the purified gas into the other process unit.

The gas solubility increase with the

• Increase in the solvent purity.

• Increase in operating pressure.

• Increase in operating temperature.

• Decrease in the operating pressure.

Stripping or desorption is a process where

• A component is reacted and removed from the gas

• More than one component is removed from the gas mixture.

• More than one component is reacted and removed from the gas.

• A solute is absorbed from a gas mixture and then is desorbed from the liquid to recover the solute.

Which one of the following is NOT the characteristic we will consider when selecting a solvent for gas absorption?

• Color

• Chemical reactivity

• Gas solubility.

• Corrosiveness.

Stripping tower is a type of distillation tower used to remove acidic components from the sour solvent by the difference of boiling points.

• TRUE

• FALSE

Which one of follow is the possible feed for the stripping column in gas absorption process?

• Heavy gas oil.

• Acidic gases.

• Preheated air.

• Spended or sour solvent

What type of distributor is shown in the figure?

• Orifice Distributor.

• Notched Distributor.

• Pipe Distributor.

• Tray Distributor.

Which one of the following is the function of mist eliminator?

• To collect liquid under the packed bed.

• To prevent loss of pack due to pressure drop or surge.

• To remove water droplets found in the tower overhead.

• To increase the interfacial area for vapor liquid contact.

Good packing for liquid gas absorption should possess which one of the following characteristic?

• Chemically active.

• Restrict the flow of the liquid in the column.

• Provide large interfacial area between liquid and gas.

• Provide separation between liquid and gas in the column.

Which one of the following statement is TRUE?

• In absorption, gas molecules is diffuse into the liquid.

• Solvent use in gas absorption should have high viscosity.

• Combustible gas or Steam are common medium use for stripping.

• Gas density is an important factor in effective gas absorption process.