Diameter of bubble caps used in high pressure columns is __________ as compared to that used in identical vacuum columns.

Process Equipment and Plant Design
Diameter of bubble caps used in high pressure columns is __________ as compared to that used in identical vacuum columns.

More

Less

Either A or B; no generalisation can be made

Same

More

Less

Either A or B; no generalisation can be made

Same

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Process Equipment and Plant Design
Floating head heat exchangers are used for the

Heat transfer between corrosive fluids

Counter-current heat transfer systems

Cases where temperature difference between the shell and the tubes is more (>50°C)

Co-current heat transfer systems

Heat transfer between corrosive fluids

Counter-current heat transfer systems

Cases where temperature difference between the shell and the tubes is more (>50°C)

Co-current heat transfer systems

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the comparative evaluation of performance of the packed tower and the plate tower.

In operations involving large temperature changes. (e.g. distillation), plate towers are preferred over packed towers as the packing may be crushed due to large temperature changes

Plate tower is perferred, if interstage cooling is required to remove heats of reaction or solution

Plate tower is preferred over packed tower, if the operation involves liquids containing dispersed solids

The total weight of a dry plate tower is usually much more than that of a dry packed tower designed for the same duty

In operations involving large temperature changes. (e.g. distillation), plate towers are preferred over packed towers as the packing may be crushed due to large temperature changes

Plate tower is perferred, if interstage cooling is required to remove heats of reaction or solution

Plate tower is preferred over packed tower, if the operation involves liquids containing dispersed solids

The total weight of a dry plate tower is usually much more than that of a dry packed tower designed for the same duty

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Process Equipment and Plant Design
Pressure drop (Δp) and the superficial gas mass velocity (G) in case of packed absorption tower operating in the preloading range are related as

Δp = 1/G0.6

Δp = G0.5

Δp = G

Δp = G2

Δp = 1/G0.6

Δp = G0.5

Δp = G

Δp = G2

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Process Equipment and Plant Design
The stress developed in a material without any permanent set is called the

Yield stress

Breaking stress

Elastic limit

Ultimate stress

Yield stress

Breaking stress

Elastic limit

Ultimate stress

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a horizontal tube evaporator.

It is suitable for process, in which the final product is a liquor instead of solid

Liquor flows inside the tube, while the steam is outside submerging the tube

Its usual dimensions are: tube dia = 2-3 cms; evaporator body dia = 1-4 metres and evaporator height = 2.5-4 metres

It is unsuitable for concentrating those liquids, which form a scale or deposit salt

It is suitable for process, in which the final product is a liquor instead of solid

Liquor flows inside the tube, while the steam is outside submerging the tube

Its usual dimensions are: tube dia = 2-3 cms; evaporator body dia = 1-4 metres and evaporator height = 2.5-4 metres

It is unsuitable for concentrating those liquids, which form a scale or deposit salt

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Process Equipment and Plant Design

Process Equipment and Plant Design Diameter of bubble caps used in high pressure columns is __________ as compared to that used in identical vacuum columns.

Process Equipment and Plant Design Floating head heat exchangers are used for the

Process Equipment and Plant Design Pick out the wrong statement pertaining to the comparative evaluation of performance of the packed tower and the plate tower.

Process Equipment and Plant Design Pressure drop (Δp) and the superficial gas mass velocity (G) in case of packed absorption tower operating in the preloading range are related as

Process Equipment and Plant Design The stress developed in a material without any permanent set is called the

Process Equipment and Plant Design Pick out the wrong statement pertaining to the design of a horizontal tube evaporator.

Process Equipment and Plant Design
Diameter of bubble caps used in high pressure columns is __________ as compared to that used in identical vacuum columns.

Process Equipment and Plant Design
Floating head heat exchangers are used for the

Process Equipment and Plant Design
Pick out the wrong statement pertaining to the comparative evaluation of performance of the packed tower and the plate tower.

Process Equipment and Plant Design
Pressure drop (Δp) and the superficial gas mass velocity (G) in case of packed absorption tower operating in the preloading range are related as

Process Equipment and Plant Design
The stress developed in a material without any permanent set is called the

Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a horizontal tube evaporator.