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Process Equipment and Plant Design

Process Equipment and Plant Design
__________ liquor is best handled in a long tube vertical evaporator.

Scaling
Viscous
Salting
Foamy

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

Size, shape, orientation and surface of the packing particles
All of these
Fluid flow rates
Density and viscosity of fluids

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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.

1/30th
1/20th
1/10th
1/50th

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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)

Sa = 1.5 Aa
1.2 Aa = 1.2 Sa
Aa = Sa
Aa = 1.5 Sa

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Process Equipment and Plant Design
For identical operating conditions, the pressure drop over __________ tray is the highest out of the following.

Valve
Sieve
Bubble cap
Counterflow

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Process Equipment and Plant Design
Normal screwed fittings are used for pipes upto a diameter of __________ inches.

7
1.5
5
3

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