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Process Equipment and Plant Design

Process Equipment and Plant Design
Baffle width is normally taken as __________ times the tank diameter.

0.2-0.45
0.45-0.6
0.1-0.12
0.4-0.5

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Process Equipment and Plant Design
__________ is the determining factor for the number of bubble caps to be used per tray.

Permissible slot velocity
Tray diameter
Liquid load
Vapor load

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Process Equipment and Plant Design
The optimum size ratio for two mixed reactors in series depends on the kinetics of the reaction and the conversion level. For reaction orders more than one, the

None of these
Larger reactor should come first
Equal sized reactors are the best
Smaller reactor should come first

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Process Equipment and Plant Design
In case of plain carbon steel, butt welded joints are used for shell plate thickness ≤ __________ cms. .

0.5
3.8
6.8
1.2

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Process Equipment and Plant Design
With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT

Increases linearly
Remains constant
Increases very rapidly
Decreases very rapidly

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Process Equipment and Plant Design
Back-trapping in a distillation column results due to

Low gas velocity
Low reflux ratio
Excessive liquid gradient over the tray
High gas velocity

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