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Process Equipment and Plant Design

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

D
0.75 d
0.5 d
2 d

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Process Equipment and Plant Design
The most common standard size of bubble caps used in industrial operation is

6" dia cap with 4" dia riser
8" dia cap with 1" dia riser
1" dia cap with 0.5" dia riser
4" dia cap with 8" dia riser

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Process Equipment and Plant Design
Lug support is

The most suitable for thick vertical vessel
Provided usually for vessels of much smaller height than skirt supported vessels
Same as bracket support
All of these

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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)

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

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Process Equipment and Plant Design
Value of Peclet number = ∞, is the representative of

Laminar flow
Plug flow
Eddy diffusivity = 0
Complete back mixing

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Process Equipment and Plant Design
The thickness of heat transfer plates used in the plate type heat exchanger ranges from __________ mm, pressed in a single piece provided with grooves & corrugations.

1.25 to 3.125
44055
3.5 to 7.0
0.3 to 0.8

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