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Process Equipment and Plant Design

Process Equipment and Plant Design
Le/D for fully open globe value may be around

25
10
75
300

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Process Equipment and Plant Design
In perforated plate towers, the

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

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Process Equipment and Plant Design
__________ tray arrangement is recommended for distillation column having diameter upto 4 ft.

Cross flow
Split flow
Radial flow
Cascade

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Process Equipment and Plant Design
Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and for its economic operation, the number of transfer units (NTU) for such dryers varies from

1.5-2.5
44119
3.5-5.5
7.5-10.0

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Process Equipment and Plant Design
In which of the following evaporators, steam is fed inside the tube while the liquor is outside the tube?

Long tube vertical evaporator
Short tube vertical evaporator
None of these
Horizontal tube evaporator

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Process Equipment and Plant Design
Rate of filtrate delivery is inversely proportional to the

Viscosity of filtrate
Cake & filter medium resistance
Both A & B
Filtering area & the pressure difference driving force

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