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Process Equipment and Plant Design

Process Equipment and Plant Design
Pressure drop (Δp) and the superficial gas mass velocity (G) in case of packed absorption tower operating in the preloading range are related as

Δp = 1/G0.6
Δp = G
Δp = G0.5
Δp = G2

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Process Equipment and Plant Design
Ratio of tube length to shell diameter for a shell and tube heat exchanger is

< 4 : 1 for gas-gas exchangers
Both B & C
8 : 1 to 12 : 1 for both liquid-liquid and gas-gas heat exchangers
4 : 1 to 8 : 1 for liquid-liquid exchanger

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Process Equipment and Plant Design
Which of the following types of reactors is the safest from operation point of view?

A liquid phase catalytic reactor
A vapor phase reactor
A liquid phase reactor
Pot type reactor

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Process Equipment and Plant Design
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

Decreases
Remains same
Increases
May increase or decrease depending upon the plate spacing

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Process Equipment and Plant Design
Bracket supports are the most suitable for supporting __________ vessels.

Thick walled vertical
None of these
Thin shperical (e.g. Horton sphere)
Horizontal

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

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

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