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Process Equipment and Plant Design

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
2.5-3.0
5-7.5
10-12.5

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Process Equipment and Plant Design
In a multipass shell and tube heat exchanger, the shell side cross flow area does not depend upon

Pitch
None of these
Baffle spacing
Clearance

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Process Equipment and Plant Design
Normally, the ratio of the total riser area to the tower cross sectional area (for bubble cap towers of diameter more than 3 ft) is around

0.35-0.75
0.1-0.2
0.4-0.6
0.55-0.85

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

Complete back mixing
Plug flow
Laminar flow
Eddy diffusivity = 0

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Process Equipment and Plant Design
In a shell and tube heat exchanger, tube side __________ of the mass velocity.

Heat transfer co-efficient is proportional to 0.8th power
Both A & B
Pressure drop is proportional to the square
Neither A nor B

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Process Equipment and Plant Design
Apex angle of conical heads used in the bottom heads of chemical process equipments is usually

30°
60°
75°
45°

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