Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower?

Process Equipment and Plant Design
Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower?

Density and viscosity of fluids

Fluid flow rates

All of these

Size, shape, orientation and surface of the packing particles

Density and viscosity of fluids

Fluid flow rates

All of these

Size, shape, orientation and surface of the packing particles

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Process Equipment and Plant Design
The approximate liquid depth in an agitation tank is equal to (where, d = tank diameter)

D

0.75 d

2 d

0.5 d

D

0.75 d

2 d

0.5 d

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

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

All of these

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

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

All of these

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

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Process Equipment and Plant Design
Fouling factor must be included in the calculation of over all design heat transfer coefficient, when the liquid

Containing suspended solids flows at high velocity

Containing suspended solids flows at low velocity

Is of high specific gravity

Is highly viscous

Containing suspended solids flows at high velocity

Containing suspended solids flows at low velocity

Is of high specific gravity

Is highly viscous

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Process Equipment and Plant Design
Le/D for fully open globe value may be around

10

300

75

25

10

300

75

25

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Process Equipment and Plant Design
At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally.

Higher

Lower

Same

Unpredictable

Higher

Lower

Same

Unpredictable

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Process Equipment and Plant Design

Process Equipment and Plant Design Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower?

Process Equipment and Plant Design The approximate liquid depth in an agitation tank is equal to (where, d = tank diameter)

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

Process Equipment and Plant Design Fouling factor must be included in the calculation of over all design heat transfer coefficient, when the liquid

Process Equipment and Plant Design Le/D for fully open globe value may be around

Process Equipment and Plant Design At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally.

Process Equipment and Plant Design
Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower?

Process Equipment and Plant Design
The approximate liquid depth in an agitation tank is equal to (where, d = tank diameter)

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

Process Equipment and Plant Design
Fouling factor must be included in the calculation of over all design heat transfer coefficient, when the liquid

Process Equipment and Plant Design
Le/D for fully open globe value may be around

Process Equipment and Plant Design
At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally.