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Process Equipment and Plant Design

Process Equipment and Plant Design
Pressure drop per tray in the atmospheric distillation column is about __________ psi.

43833
0.01 - 0.5
0.5 - 1.0
0.07 - 0.12

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

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

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Process Equipment and Plant Design
In condenser, the cooling water is passed in the tube side in a pass arrangement, because

It makes condenser compact
It reduces heat transfer area
Pressure drop is reduced
More thinner tubes can be used

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Process Equipment and Plant Design
Steam economy is defined as the amount of evaporation per unit amount of steam used, while the capacity is the total evaporation obtained per hour. Use of multiple effect in evaporation

Increases capacity
Both B & C
Increases economy
Does not affect the capacity

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Process Equipment and Plant Design
Width and depth of grooves in the tube sheet holes normally are __________ inch respectively.

1/64 and 1/8
1/2 and 8
1/2 and 5
1/8 and 1/64

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Process Equipment and Plant Design
The minimum baffle height should be

3/4 of the tank height
Equal to the impeller diameter
Twice the impeller diameter
Twice the tank diameter

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