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Process Equipment and Plant Design

Process Equipment and Plant Design
The minimum tray spacing in distillation column of diameter less than 3 ft is normally __________ inches.

24
34
18
6

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Process Equipment and Plant Design
Power required for agitation depends upon the

Agitator type & speed of agitation
All of these
Height & properties of the liquid
Size of agitator & the tank

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Process Equipment and Plant Design
Liquid redistribution should be done in a packed tower packed with raschig rings every 6 metres or __________ times the column diameter, whichever is lower.

15-20
10-12.5
2.5-3.0
5-7.5

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Process Equipment and Plant Design
Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").

Three fourth
Half
Equal to
1.5 times

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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.

Sieve
Counterflow
Valve
Bubble cap

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Process Equipment and Plant Design
Wind load consideration in the design of a support can be neglected, when the vessel is

Tall (say 30 metres), but is full of liquid
None of these
Short (< 2 m) and housed indoor
Tall but empty

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