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Process Equipment and Plant Design

Process Equipment and Plant Design
Back-trapping in a distillation column results due to

Low reflux ratio
Excessive liquid gradient over the tray
Low gas velocity
High gas velocity

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Process Equipment and Plant Design
Tube height in a calendria type evaporator is normally less than __________ metres.

1
2
3.5
5.5

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Process Equipment and Plant Design
In the design of a bag filter, the gas temperature is an important consideration, as it affects the

Fibre selection
Gas density
All of these
Gas viscosity

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Process Equipment and Plant Design
An underdesigned steam trap will

None of these
Back up condensate and cause water hammer in steam line
Destroy itself of acceleration wear due to rapid recycling
Waste steam

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Process Equipment and Plant Design
The ideal size of round bubble caps to be used in industrial distillation column having a diameter of 3-6 metres is __________ cms.

5
50
7.5
15

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Process Equipment and Plant Design
The main purpose of providing stepping on the trays is to

Increase the residence time
Improve the flow condition
Facilitate handling of large flow rate of liquid
Decrease the pressure drop

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