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Process Equipment and Plant Design

Process Equipment and Plant Design
__________ tray arrangement is recommended for distillation column having diameter upto 4 ft.

Cross flow
Split flow
Radial flow
Cascade

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Process Equipment and Plant Design
The slope of the feed line in distillation opeartion is given by (where, q = fraction of the feed stream that is liquid.)

None of these
-q/(1-q)
-q
-q/(q-1)

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Process Equipment and Plant Design
Accidents in chemical plants are mostly due to

Faulty operating procedures
Failure of equipments
Improper layout of the equipments
Inadequate equipment design

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Process Equipment and Plant Design
Normally, the length to diameter ratio of rotary dryers varies form 4 to 10 and for its economic operation, the number of transfer units (NTU) for such dryers varies from

3.5-5.5
1.5-2.5
44119
7.5-10.0

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Process Equipment and Plant Design
In shell and tube heat exchangers, straight tie rods are used to

Hold baffle in space
None of these
Fix the tubes in position
Account for thermal strain

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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
Smaller reactor should come first
Equal sized reactors are the best
Larger reactor should come first

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