Gas Absorption

Question 1

A gas mixture is contacted with a liquid to selectively dissolve one or more components by mass transfer from the gas to the liquid.

Answer 1

Absorption

Question 2

A gas mixture is contacted with a liquid to selectively dissolve one or more components by mass transfer from the gas to the liquid.

Answer 2

Absorption

Question 3

The components transferred to the liquid

Answer 3

Solutes/Absorbates

Question 4

Removal of H2S and Co2 from natural gas using MEA is an example of what unit process

Answer 4

Absorption

Question 5

A liquid mixture is contacted with a gas to selectively remove components by mass transfer from the liquid to the gas phase

Answer 5

Stripping/Desorption

Question 6

True or False.
Absorbers are normally used with strippers to permit regeneration or recovery and recycling of the absorbent.

Answer 6

True

Question 7

Absorption or Desorption.
Removal of H2S from sour crude oil

Answer 7

Desorption

Question 8

The removal of a component (solute) from a gas stream via uptake by a nonvolatile liquid (solvent)

Answer 8

Absorption

Question 9

The removal of a component from a liquid stream via vaporization and uptake by an insoluble gas stream.

Answer 9

Desorption

Question 10

T or F.
Both absorption and stripping can be operated as equilibrium stage processes using trayed columns or packed columns.

Answer 10

True

Question 11

Operation of absorption where the component being absorbed is more soluble in the liquid absorbent than the other gases with which it is mixed but does not react chemically with the absorbent.

Answer 11

Physical solution.

Question 12

T or F.
The equilibrium concentration in the liquid phase is primarily a function of partial pressure in the gas phase and temperature.

Answer 12

True

Question 13

This type of absorption is characterized by the occurrence of a chemical reaction between the gaseous component being absorbed and a component in the liquid phase to form a compound that exerts a significant vapor pressure of the absorbed component.

Answer 13

Reversible reaction

Question 14

In this type of absorption, a reaction occurs between the component being absorbed and a component in the liquid phase, which is essentially irreversible.

Answer 14

Irreversible reaction

Question 15

In _____ absorption, the gas is removed because it has greater solubility in the solvent than other gases.

Answer 15

Physical Absorption

Question 16

Physical or Chemical Absorption.
Removal of butane and pentane (C4-C5) from a refinery gas mixture with a heavy oil.

Answer 16

Physical

Question 17

In this absorption, the gas to be removed reacts with the solvent and remains in solution.

Answer 17

Chemical Absorption