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Process Equipment and Plant Design

Process Equipment and Plant Design
A minimum clearance of about __________ mm is maintained between the distillation column wall and the bubble cap.

38
76
19
95

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Process Equipment and Plant Design
In perforated plate towers, the

Total hole area may be around 6 to 15% of tower cross-sectional area
Pressure drop is less compared is similar bubble cap towers
All of these
Hole sizes may be around 1/8" or 3/16"

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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

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

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Process Equipment and Plant Design
__________ heat exchanger is also known as 'hair pin type' exchanger,

Double pipe
Regenerative
Plate type
Finned

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Process Equipment and Plant Design
Baffles may be eliminated for

Low viscosity liquids (< 200 poise)
High viscosity liquids (> 600 poise)
Large diameter tanks
None of these

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Process Equipment and Plant Design
In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.

2.7 to 3
1.1 to 1.5
1.6 to 2
2.2 to 2.6

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