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Process Equipment and Plant Design

Process Equipment and Plant Design
The retention time of material in a rotary dryer depends upon its

Rpm
All of these
Flights arrangement
Slope & length

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Process Equipment and Plant Design
In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.

l/5th
l/30th
l/15th
l/50th

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Process Equipment and Plant Design
The force due to wind load acting on a tall vessel depends upon its

Outside diameter
Height
All of these
Shape

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Process Equipment and Plant Design
Excessive liquid gradient on a tray may result in the

Maldistribution of gas
Back trapping
All of these
Gas blowing beneath cap skit

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Process Equipment and Plant Design
The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

20-40
100-150
1000-1500
43835

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Process Equipment and Plant Design
Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").

Three fourth
Half
Equal to
1.5 times

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