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Process Equipment and Plant Design

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.

SO₂
NH₃
CO₂
None of these

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Process Equipment and Plant Design
Maximum acceptable total liquid gradient over a tray is about __________ mm.

5.5
30.5
45.5
12.5

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Process Equipment and Plant Design
In distillation columns, bubble caps are held in place over trays by

A hold down bar
Bolts
Rivets
Both B and C

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Process Equipment and Plant Design
The raio, (properller agitator dia/tank dia) is normally taken as

0.75-0.85
0.15-030
0.60-0.90
0.5-0.65

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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
Tall but empty
None of these
Short (< 2 m) and housed indoor

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Process Equipment and Plant Design
Lug support is meant for supporting __________ vessels.

Small
Tall but empty
Thick walled tall
Large horizontal cylindrical

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