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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)

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

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Process Equipment and Plant Design
In a heat exchanger, shell side fluid velocity can be changed by changing the tube

Layout
Neither A nor B
Both A & B
Pitch

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Process Equipment and Plant Design
The most common standard size of bubble caps used in industrial operation is

8" dia cap with 1" dia riser
6" dia cap with 4" dia riser
4" dia cap with 8" dia riser
1" dia cap with 0.5" dia riser

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

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

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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

Deformation
Bending
Shear
Elongation

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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.

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

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