Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are

Mass Transfer
Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are

10

1

8

9

10

1

8

9

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Mass Transfer
Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the

Specific heat

Latent heat

Sensible heat

Humid heat

Specific heat

Latent heat

Sensible heat

Humid heat

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Mass Transfer
__________ is used as an 'entrainer' for the separation of acetic acid-water mixture by distillation.

Benzol

Butyl acetate

Furfural

Hexane

Benzol

Butyl acetate

Furfural

Hexane

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Mass Transfer
McCabe-Thiele method

Uses weight fractions to express liquid and vapour composition

Can use any type of units

Uses molal units for material and energy balance

Is more accurate than Ponchan-Savarit method

Uses weight fractions to express liquid and vapour composition

Can use any type of units

Uses molal units for material and energy balance

Is more accurate than Ponchan-Savarit method

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Mass Transfer
Flooding in a vapor-liquid contacting equipment occurs in a tray, when the pressure drop through a tray is __________ the liquid head available in the downcomer.

Less than

Same as

More than

Very much less

Less than

Same as

More than

Very much less

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Mass Transfer
All moisture in a non-hygroscopic material is the __________ moisture.

Equilibrium

Free

Bound

Unbound

Equilibrium

Free

Bound

Unbound

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Mass Transfer

Mass Transfer Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the

Mass Transfer __________ is used as an 'entrainer' for the separation of acetic acid-water mixture by distillation.

Mass Transfer McCabe-Thiele method

Mass Transfer Flooding in a vapor-liquid contacting equipment occurs in a tray, when the pressure drop through a tray is __________ the liquid head available in the downcomer.

Mass Transfer All moisture in a non-hygroscopic material is the __________ moisture.

Mass Transfer
Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the

Mass Transfer
__________ is used as an 'entrainer' for the separation of acetic acid-water mixture by distillation.

Mass Transfer
McCabe-Thiele method

Mass Transfer
Flooding in a vapor-liquid contacting equipment occurs in a tray, when the pressure drop through a tray is __________ the liquid head available in the downcomer.

Mass Transfer
All moisture in a non-hygroscopic material is the __________ moisture.