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

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Process Equipment and Plant Design
Which tube arrangement in a heat exchanger would facilitate highest heat transfer rate?

Square pitch
Triangular pitch
Heat transfer rate is independent of tube arrangement
Diagonal square pitch

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Process Equipment and Plant Design
Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation?

Ponchon-Savarit method
None of these
McCabe-Thiele's method
Sorel-Lewis method

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Process Equipment and Plant Design
Height of the flights in the rotary drier is in the range of

0.5 to 0.6 d
0.08 to 0.12 d
0.02 to 0.05 d
0.2 to 0.5 d

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Process Equipment and Plant Design
Movement of pipeline caused by thermal expansion is taken care by providing

All of these
Expansion joint
Change in the shape of pipeline
Changes in its direction

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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

3.5-5.5
44119
7.5-10.0
1.5-2.5

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