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Process Equipment and Plant Design

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)

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

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Process Equipment and Plant Design
In a distillation column, bubble caps are located on trays with a pitch of __________ times the outside diameter of the caps.

2.5
1.6 to 2
1.3 to 2
1.5 to 3

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Process Equipment and Plant Design
A shell may by termed as thin if its thickness to diameter ratio is less than 0.1. The factor which can be neglected in the calculation of membrane stresses is

Elongation
Deformation
Shear
Bending

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

Viscous
Scaling
Foamy
Salting

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Process Equipment and Plant Design
Shell side heat transfer co-efficient in case of square pitch as compared to the triangular pitch under similar condition of fluid flow and tube size is

Less
Same
Twice
More

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Process Equipment and Plant Design
for couplings and unions would be

350
60
200
Negligible

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