In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5-10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.

Process Equipment and Plant Design
In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5-10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.

1/20-1/30th

1/10-1/15th

1/5-1/10th

1/2 to 1/4th

1/20-1/30th

1/10-1/15th

1/5-1/10th

1/2 to 1/4th

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Process Equipment and Plant Design
The diameter of a propeller agitator used in agitation tank ranges from __________ percent of the tank diameter and its peripherial speed is normally 300 to 500 metres/minute.

40 to 50

15 to 30

55 to 75

5 to 10

40 to 50

15 to 30

55 to 75

5 to 10

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Process Equipment and Plant Design
An adequate clearance between the tray and the shell wall of a distillation column is provided to

None of these

Allow for thermal expansion and facilitate installation

Avoid back-trapping

Drain the liquid from the tray when the unit is not in operation

None of these

Allow for thermal expansion and facilitate installation

Avoid back-trapping

Drain the liquid from the tray when the unit is not in operation

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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 = G2

Δp = G

Δp = G0.5

Δp = 1/G0.6

Δp = G2

Δp = G

Δp = G0.5

Δp = 1/G0.6

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Process Equipment and Plant Design
Normally, the plate thickness of the bottoms and roofs of vertically cylindrical storage vessels as compared to that of the cylindrical shell is

More or less depending upon the pressure & temperature inside the vessel and the nature of the fluid contained therein

More

Same

Less

More or less depending upon the pressure & temperature inside the vessel and the nature of the fluid contained therein

More

Same

Less

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Process Equipment and Plant Design
In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.

l/50th

l/30th

l/15th

l/5th

l/50th

l/30th

l/15th

l/5th

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Process Equipment and Plant Design

Process Equipment and Plant Design In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5-10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.

Process Equipment and Plant Design The diameter of a propeller agitator used in agitation tank ranges from __________ percent of the tank diameter and its peripherial speed is normally 300 to 500 metres/minute.

Process Equipment and Plant Design An adequate clearance between the tray and the shell wall of a distillation column is provided to

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 Normally, the plate thickness of the bottoms and roofs of vertically cylindrical storage vessels as compared to that of the cylindrical shell is

Process Equipment and Plant Design In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.

Process Equipment and Plant Design
In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5-10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.

Process Equipment and Plant Design
The diameter of a propeller agitator used in agitation tank ranges from __________ percent of the tank diameter and its peripherial speed is normally 300 to 500 metres/minute.

Process Equipment and Plant Design
An adequate clearance between the tray and the shell wall of a distillation column is provided to

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
Normally, the plate thickness of the bottoms and roofs of vertically cylindrical storage vessels as compared to that of the cylindrical shell is

Process Equipment and Plant Design
In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.