Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.

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

1/10th

1/20th

1/50th

1/30th

1/10th

1/20th

1/50th

1/30th

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is

Called tube pitch

Always less than the diameter of the tube

None of these

Called tube clearance

Called tube pitch

Always less than the diameter of the tube

None of these

Called tube clearance

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Process Equipment and Plant Design
In the allocated cap area, bubble caps are generally arranged on equilateral triangular pitch. Number of caps fixed on a plate is with a

Clearance of 25-75 mm

Neither A nor B

Either A or B

Cap pitch of 1.3-2 times the cap diameter

Clearance of 25-75 mm

Neither A nor B

Either A or B

Cap pitch of 1.3-2 times the cap diameter

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Process Equipment and Plant Design
In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area)

Aa = 1.5 Sa

Aa = Sa

Sa = 1.5 Aa

1.2 Aa = 1.2 Sa

Aa = 1.5 Sa

Aa = Sa

Sa = 1.5 Aa

1.2 Aa = 1.2 Sa

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Process Equipment and Plant Design
Vertical condenser is advantageous to the horizontal condenser from operation point of view, when

Both the functions of condensation & sub cooling are carried out in a single unit

Hydrostatic head is required for refluxing the condensate

Only the function of condensation is to be carried out

Sub cooling of condensate is desired

Both the functions of condensation & sub cooling are carried out in a single unit

Hydrostatic head is required for refluxing the condensate

Only the function of condensation is to be carried out

Sub cooling of condensate is desired

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Process Equipment and Plant Design
Liquid gradient over a tray can be minimised by

Decreasing the number of rows of caps through which the liquid flows or by decreasing the velocity of liquid flow past the caps or by reducing the distance along the tray through which the liquid must

Providing a higher skirt clearance or a higher weir

All of these

Using split flow, radial flow or cascade flow for column diameter large than 4 ft

Decreasing the number of rows of caps through which the liquid flows or by decreasing the velocity of liquid flow past the caps or by reducing the distance along the tray through which the liquid must

Providing a higher skirt clearance or a higher weir

All of these

Using split flow, radial flow or cascade flow for column diameter large than 4 ft

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Process Equipment and Plant Design

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 In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is

Process Equipment and Plant Design In the allocated cap area, bubble caps are generally arranged on equilateral triangular pitch. Number of caps fixed on a plate is with a

Process Equipment and Plant Design In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area)

Process Equipment and Plant Design Vertical condenser is advantageous to the horizontal condenser from operation point of view, when

Process Equipment and Plant Design Liquid gradient over a tray can be minimised by

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
In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is

Process Equipment and Plant Design
In the allocated cap area, bubble caps are generally arranged on equilateral triangular pitch. Number of caps fixed on a plate is with a

Process Equipment and Plant Design
In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area)

Process Equipment and Plant Design
Vertical condenser is advantageous to the horizontal condenser from operation point of view, when

Process Equipment and Plant Design
Liquid gradient over a tray can be minimised by