Gas Absorber

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.

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

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

• To remove alkaline from the solvent.

• To recover solvent from after gas absorption process.

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

Good packings must have the following characteristics, EXCEPT

• chemically inert to fluids being processed.

• possess desirable fluid flow pattern.

• provide large interfacial surface between liquid and gas.

• fixed orientation to direct the fluid flow in specific pattern.

The packed tower operating differential pressure (ΔP) is very low. What type of packing should be selected for this tower operation?

• Pall rings

• Stacked packings

• Raschig rings

• Ceramic saddles

Stripping or desorption is a process where

• A component is reacted and removed from the gas.

• More than one component is removed form 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 form the liquid to recover the solute.

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

• To remove alkaline from the solvent.

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

• To recover solvent from after gas absorption process.

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

Which one of the following descriptions is NOT TRUE about the responsibilities of process technician in liquid-liquid extraction unit?

• Process technician needs to remove rag layer routinely in the process unit.

• Process technician can neutralize the solvent by adding a lot of MEA into the process.

• Process technician can detect the solvent degradation by analyzing the solvent purity.

• Process technician is responsible to monitor the pH value and feed total oxygen content in the unit,

Flow control loop help to maintain the correct proportion between light and heavy liquid feed rate through pressure sensor and interlock control.

• True

• False

In liquid-liquid extraction process, solvent will degrade when it is overheated.

• True

• False

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