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Process Equipment and Plant Design

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

300
25
10
75

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Process Equipment and Plant Design
__________ liquor is best handled in a long tube vertical evaporator.

Scaling
Foamy
Viscous
Salting

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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
7.5-10.0
3.5-5.5
44119

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Process Equipment and Plant Design
For identical situation, condensing film coefficient in case of a horizontal condenser is almost __________ the value expected in case of vertical condenser.

Five times
Thrice
Twice
Half

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Process Equipment and Plant Design
An adequate clearance between the tray and the shell wall of a distillation column is provided to

Drain the liquid from the tray when the unit is not in operation
None of these
Allow for thermal expansion and facilitate installation
Avoid back-trapping

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Process Equipment and Plant Design
In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area)

1.2 Aa = 1.2 Sa
Aa = Sa
Sa = 1.5 Aa
Aa = 1.5 Sa

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