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Process Equipment and Plant Design

Process Equipment and Plant Design
The difficulty of liquid distribution in packed towers is accentuated, when the ratio of tower diameter to packing diameter is

< 7
< 30
> 7 < 15
> 20 < 50

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Process Equipment and Plant Design
The raio, (properller agitator dia/tank dia) is normally taken as

0.5-0.65
0.15-030
0.60-0.90
0.75-0.85

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Process Equipment and Plant Design
Normally, the ratio of the total riser area to the tower cross sectional area (for bubble cap towers of diameter more than 3 ft) is around

0.55-0.85
0.4-0.6
0.35-0.75
0.1-0.2

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Process Equipment and Plant Design
Le/D for 90° elbow (medium radius) and 90°square elbow would be respectively around

100 and 250
3 and 5
25 and 60
250 and 600

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Process Equipment and Plant Design
What is the value of 'q' for saturated vapor feed to a distillation column ?(where q = fraction of the feed stream that is liquid.)

1
> 1

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Process Equipment and Plant Design
The distance between the centre of a rivet hole to the nearest edge of the plate is called

Margin
Pitch
None of these
Back pitch

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