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Process Equipment and Plant Design

Process Equipment and Plant Design
Column support for the roof of cylindrical storage tank must be provided for

All of these
Small diameter tall tanks
Large diameter tanks
Small diameter tanks

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Process Equipment and Plant Design
For high pressure process equipments/vessels, the connected nozzle should be

Flanged
Screwed
Brazed
Welded

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Process Equipment and Plant Design
Spherical shaped pressure vessel is considered to be the most ideal, because it can

Withstand higher pressure for a given metallic shell thickness
Be fabricated very easily
Be supported very easily
Be designed without wind load considerations

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Process Equipment and Plant Design
In the downcomer of a distillation column, the minimum recommended residence time is about __________ seconds.

5
12.5
17.5
2.5

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Process Equipment and Plant Design
For laminar flow (NRe < 2100) in steel pipe, the optimum inside pipe diameter is given by

Di, opt = 3.9 Q0.45 . ρ0.23
Di, opt = 3 Q0.36 . ρ1.86 μ0.08
Di, opt = 3 Q0.36 ρ0.18
Di, opt = 7.6 Q0.36 . ρ0.9

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Process Equipment and Plant Design
Le/D for a Tee (used as elbow, entering branch) would be

Around 90
Less than that for Tee (used as elbow, entering run)
More than that for Tee (used as elbow, entering run)
Both B and C

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