Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the

Process Equipment and Plant Design
Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the

Economic limit reached, when the plant cost exceeds the saving of steam

Neither A nor B

Both A & B

Practical limit reached, due to low heat transfer rate because of inadequate temperature difference

Economic limit reached, when the plant cost exceeds the saving of steam

Neither A nor B

Both A & B

Practical limit reached, due to low heat transfer rate because of inadequate temperature difference

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Process Equipment and Plant Design
Skirt support is the most suitable for supporting __________ vessels.

Tall vertical

Small horizontal

Large horizontal

Thick walled

Tall vertical

Small horizontal

Large horizontal

Thick walled

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Process Equipment and Plant Design
Which of the following packing materials provides for maximum mass transfer?

Raschig rings

Cross-partition rings

Lessig rings

All of these

Raschig rings

Cross-partition rings

Lessig rings

All of these

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Process Equipment and Plant Design
Larger depth of liquid on the trays of a distillation column

Both A & B

Results in higher pressure drop per tray

Neither A nor B

Leads to high tray efficiency

Both A & B

Results in higher pressure drop per tray

Neither A nor B

Leads to high tray efficiency

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Process Equipment and Plant Design
Pick out the wrong statement about distillation operation

In differential (simple) distillation, the vapour is removed as soon as it is formed without appreciable condensation

In flash (equilibrium) distillation, a definite fraction of liquid is vaporised in such a way that the evolved vapour & residual liquids are in equilibrium with each other

Distillation under vacuum is a substitute for steam distillation

Flash distillation, differential distillation & steam distillation are all continuous distillation processes

In differential (simple) distillation, the vapour is removed as soon as it is formed without appreciable condensation

In flash (equilibrium) distillation, a definite fraction of liquid is vaporised in such a way that the evolved vapour & residual liquids are in equilibrium with each other

Distillation under vacuum is a substitute for steam distillation

Flash distillation, differential distillation & steam distillation are all continuous distillation processes

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Process Equipment and Plant Design
Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate.

1/2

2

4

8

1/2

2

4

8

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Process Equipment and Plant Design

Process Equipment and Plant Design Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the

Process Equipment and Plant Design Skirt support is the most suitable for supporting __________ vessels.

Process Equipment and Plant Design Which of the following packing materials provides for maximum mass transfer?

Process Equipment and Plant Design Larger depth of liquid on the trays of a distillation column

Process Equipment and Plant Design Pick out the wrong statement about distillation operation

Process Equipment and Plant Design Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate.

Process Equipment and Plant Design
Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the

Process Equipment and Plant Design
Skirt support is the most suitable for supporting __________ vessels.

Process Equipment and Plant Design
Which of the following packing materials provides for maximum mass transfer?

Process Equipment and Plant Design
Larger depth of liquid on the trays of a distillation column

Process Equipment and Plant Design
Pick out the wrong statement about distillation operation

Process Equipment and Plant Design
Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate.