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Process Equipment and Plant Design

Process Equipment and Plant Design
The difficulty of liquid distribution in packed towers is accentuated, when the ratio of tower diameter to packing diameter is

> 7 < 15
< 30
< 7
> 20 < 50

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Process Equipment and Plant Design
A cylindrical storage tank can have a self supported conical roof,

If its diameter is more than 50 meters
If the thickness of the roof is more than that of the cylindrical shell
If its diameter is less than 15-20metres
Irrespective of its diameter

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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.

100-150
43835
20-40
1000-1500

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Process Equipment and Plant Design
Which of the following lengths of heat exchanger tubes are normally not used in practice?

2.5 metres
10 metres
0.5 metre
6 metres

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Process Equipment and Plant Design
1.2 to 3.8 cms is the value of the

Skirt clearance for bubble caps
All of these
Downcomer liquid seal in case of a balanced tray design
Static submergence in case of a bubble cap tray for column operating under pressure (≥ 1 atm.)

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Process Equipment and Plant Design
The thickness of segmental baffles (25 -35% cut truncated plates usually) is generally __________ the tube wall thickness.

Half
Twice
Equal to
Four times

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