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Process Equipment and Plant Design

Process Equipment and Plant Design
The minimum plate spacing in most of the pertroleum refinery distillation columns (of dia > 3 ft) is normally __________ inches.

18
12
34
6

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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

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

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Process Equipment and Plant Design
Filtration rate is affected by the

All of these
Area of filtering surface & the viscosity of filtrate
Pressure drop across the cake & filter medium
Cake & filter medium resistance

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Process Equipment and Plant Design
In a __________ rivetted joint, the rivets in the various rows are opposite to each other.

None of these
Chain
Diamond
Zig-zag

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Process Equipment and Plant Design
The shell side pressure drop in a shell and tube heat exchanger is maximum for __________ baffle.

Orifice
Disk and ring
Segmental
Independent of the type of

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

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

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