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Process Equipment and Plant Design

Process Equipment and Plant Design
What is the slope of the operating line in the rectifying section of a distillation coloumn?

> 1
∞

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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.

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

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Process Equipment and Plant Design
An underdesigned steam trap will

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

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Process Equipment and Plant Design
With increase in the number of shell passes, the value of FT

Remains same
Decreases
Remains same, only if the number of tube passes does not change
Increases

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Process Equipment and Plant Design
The normal range of velocity of steam in pipes is __________ m/sec.

1-5
10-20
0.1-0.5
80-100

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Process Equipment and Plant Design
The maximum liquid gradient over a tray must not exceed

5"
Half the tray spacing
0.5" -1.25"
2"-3.5"

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