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Process Equipment and Plant Design

Process Equipment and Plant Design
In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is

> 20
> 10
< 10
30

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Process Equipment and Plant Design
Height of the flights in the rotary drier is in the range of

0.5 to 0.6 d
0.02 to 0.05 d
0.2 to 0.5 d
0.08 to 0.12 d

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to

∞
20.8
2
1

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Process Equipment and Plant Design
The most common standard size of bubble caps used in industrial operation is

8" dia cap with 1" dia riser
4" dia cap with 8" dia riser
6" dia cap with 4" dia riser
1" dia cap with 0.5" dia riser

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Process Equipment and Plant Design
In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.

1.1 to 1.5
2.7 to 3
2.2 to 2.6
1.6 to 2

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Process Equipment and Plant Design
Baffle spacing is generally __________ the I.D. of the shell.

Both B and C
Not less than one fifth of
Not greater than
More than

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