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Process Equipment and Plant Design

Process Equipment and Plant Design
In the design of a paddle agitator, the ratio (paddle dia/tank dia) is normally taken as

0.8
0.1
0.5
0.25

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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.

Four times
Equal to
Twice
Half

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Process Equipment and Plant Design
A claming section before the liquid flows into the downcomer is privided to

Cool the liquid before it flows down
Reduce the discharge fluctuation
Ensure better vapour-liquid contact
Permit release of entrained vapour in the liquid

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Process Equipment and Plant Design
Ratio of tube length to shell diameter for a shell and tube heat exchanger is

< 4 : 1 for gas-gas exchangers
8 : 1 to 12 : 1 for both liquid-liquid and gas-gas heat exchangers
4 : 1 to 8 : 1 for liquid-liquid exchanger
Both B & C

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Process Equipment and Plant Design
Any shell opening greater than 5 cms for a storage tank must be reinforced for reason of

Reduction of discontinuity in shape at the junction
Preventing the local overstressing of the shell around the opening
None of these
Making the joint leak proof

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Process Equipment and Plant Design
Tube height in a calendria type evaporator is normally less than __________ metres.

2
3.5
1
5.5

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