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Process Equipment and Plant Design

Process Equipment and Plant Design
Vertical vessels are not supported by

Skirts
Saddles
Brackets
Columns

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Process Equipment and Plant Design
Steam is preferred to be used as a heating medium in heat exchangers, because of its

Non-corrosive condensate
High film co-efficient
High latent heat
Low cost

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Process Equipment and Plant Design
Where does the maximum tensile strength occur in a thick cylindrical vessel subjected to internal pressure?

None of these
At the inner surface
At the mid thickness of the cylindrical wall
At the outer surface

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Process Equipment and Plant Design
The ends of a cylinderical vessel can be closed by a head, which can be one of the four shapes. For the same thickness, choose the one which can withstand the highest pressure.

Flat plate
Torispherical
Ellipsoidal
Hemispherical

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Process Equipment and Plant Design
Le/D for fully open gate valves would be

Both B and C
Much more than that for fully open globe valves
Much less (say 2% than that for fully open globe valves)
Around 7

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Process Equipment and Plant Design
In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the

Small downcomer liquid seal
Liquid gradient on the tray
Lower static submergence
Lower skirt clearance

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