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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)

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

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Process Equipment and Plant Design
1.2 to 3.8 cms is the value of the

Static submergence in case of a bubble cap tray for column operating under pressure (≥ 1 atm.)
Skirt clearance for bubble caps
All of these
Downcomer liquid seal in case of a balanced tray design

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Process Equipment and Plant Design
What is the slope of the operating line in the rectifying section of a distillation coloumn?

∞
> 1

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Process Equipment and Plant Design
In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is

> 20
< 10
30
> 10

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Process Equipment and Plant Design
In seive plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally __________ times the hole diameter to give the required hole area.

2.5 to 4.0
0.5 to 1.5
5 to 10
10 to 15

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Process Equipment and Plant Design
The ratio of the largest load in a test to the original cross-sectional area of the test specimen is called the __________ stress.

Breaking
Yield point
None of these
Ultimate

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