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Process Equipment and Plant Design

Process Equipment and Plant Design
Minimum tube pitch recommended for shell and tube heat exchangers is about __________ times the outside diameter of the tube.

3.5
1.25
2.5
1.75

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Process Equipment and Plant Design
Liquid gradient over the tray results due to the

Resistance offered to flow of liquids by caps & risers and the flow of gas
Large reflux ratio
Low gas velocity
Large plate spacing

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Process Equipment and Plant Design
Bubble cap plate column is

A differential stage contactor
A continuous contactor
Used only for distillation, not for absorption
A finite stage contactor

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Process Equipment and Plant Design
In a multipass shell and tube heat exchanger, the baffles on shell side is primarily provided for

Creating turbulence
Fixing the tubes
Reducing scale deposition
Increasing pressure drop

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Process Equipment and Plant Design
Cylinderical shell thickness of rotary drier is generally __________ mm.

44180
43864
43990
18-22

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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.

SO₂
NH₃
None of these
CO₂

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