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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.

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

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Process Equipment and Plant Design
Vertical storage vessels are never supported by __________ support.

Lug
Skirt
Saddle
Bracket

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Process Equipment and Plant Design
An adequate clearance between the tray and the shell wall of a distillation column is provided to

None of these
Allow for thermal expansion and facilitate installation
Avoid back-trapping
Drain the liquid from the tray when the unit is not in operation

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Process Equipment and Plant Design
Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling.

NH₃
CO₂
SO₂
None of these

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Process Equipment and Plant Design
For annular flow of a fluid, the ratio of the equivalent diameter for pressure drop calculation to the equivalent diameter for heat transfer calculation is

D2/(d1 + d2)
(d1 + d2)/d2
D1/(d1 + d2)
(d1 + d2)/d1

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Process Equipment and Plant Design
The value of fouling factor depends upon the

Characteristic of process fluid
All of these
Velocity of process fluid containing suspended solids
Suspended solids in the fluid

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