At the following point for a given packing and set of fluids, the pressure drop per metre of packed height, with variation in fluid rates and operating pressure

Process Equipment and Plant Design
At the following point for a given packing and set of fluids, the pressure drop per metre of packed height, with variation in fluid rates and operating pressure

May increase or decrease depending upon the solubility of the gas in the liquid

Decreases

Increases

Remains same

May increase or decrease depending upon the solubility of the gas in the liquid

Decreases

Increases

Remains same

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Process Equipment and Plant Design
Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.

1/20th

1/50th

1/10th

1/30th

1/20th

1/50th

1/10th

1/30th

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Process Equipment and Plant Design
Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.

35

55

20

5

35

55

20

5

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Process Equipment and Plant Design
A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator

Is economical in operation

Both B & C

Employs high velocity, high heat transfer rate and less heating surface requirement

Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle

Is economical in operation

Both B & C

Employs high velocity, high heat transfer rate and less heating surface requirement

Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle

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Process Equipment and Plant Design
Which of the following is used to set the diameter of the distillation column?

Static submergence

Length of straight rectangular weir on cross-flow tray

Allowable vapour velocity

Number of theorectical plates

Static submergence

Length of straight rectangular weir on cross-flow tray

Allowable vapour velocity

Number of theorectical plates

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Process Equipment and Plant Design
Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effect in evaporation

Increases capacity

Both B & C

Increases economy

Does not affect the capacity

Increases capacity

Both B & C

Increases economy

Does not affect the capacity

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Process Equipment and Plant Design

Process Equipment and Plant Design At the following point for a given packing and set of fluids, the pressure drop per metre of packed height, with variation in fluid rates and operating pressure

Process Equipment and Plant Design Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.

Process Equipment and Plant Design Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.

Process Equipment and Plant Design A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator

Process Equipment and Plant Design Which of the following is used to set the diameter of the distillation column?

Process Equipment and Plant Design Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effect in evaporation

Process Equipment and Plant Design
At the following point for a given packing and set of fluids, the pressure drop per metre of packed height, with variation in fluid rates and operating pressure

Process Equipment and Plant Design
Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.

Process Equipment and Plant Design
Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.

Process Equipment and Plant Design
A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator

Process Equipment and Plant Design
Which of the following is used to set the diameter of the distillation column?

Process Equipment and Plant Design
Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effect in evaporation