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Process Equipment and Plant Design

Process Equipment and Plant Design
Vertical vessels are not supported by

Saddles
Brackets
Columns
Skirts

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Process Equipment and Plant Design
Which of the following packing materials provides for maximum mass transfer?

Cross-partition rings
All of these
Lessig rings
Raschig rings

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Process Equipment and Plant Design
For turbine agitator, the impeller diameter is about

0.95 d
0.65 to 0.85 d
0.3 to 0.5 d
0.1 to 0.2 d

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to

∞
20.8
1
2

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Process Equipment and Plant Design
In a shell and tube heat exchanger having square pitch, the shell side equivalent diameter is given by (where, P = pitch, d = outside diameter of the tube)

4(P² - πd²/4)/πd
(P² - πd²/4)/πd
4P²/πd
Πd/4P²

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Process Equipment and Plant Design
The practical representative values of HETP for a number of commercial operations lies within a range of __________ metre.

1.2-1.5
0.2-0.5
0.4-0.9
0.1-0.2

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