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Process Equipment and Plant Design

Process Equipment and Plant Design
Value of Peclet number = ∞, is the representative of

Laminar flow
Complete back mixing
Plug flow
Eddy diffusivity = 0

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Process Equipment and Plant Design
The maximum liquid gradient over a tray must not exceed

2"-3.5"
0.5" -1.25"
5"
Half the tray spacing

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Process Equipment and Plant Design
In which of the following evaporators, steam is fed inside the tube while the liquor is outside the tube?

None of these
Short tube vertical evaporator
Horizontal tube evaporator
Long tube vertical evaporator

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Process Equipment and Plant Design
The absorption factor is defined as (where, S₁ = slope of the equilibrium curve, S₂ = slope of the operating line)

S₁.S₂
S₂/S₁
S₁/S₂
1/S₁.S₂

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Process Equipment and Plant Design
Bubble cap diameter used for the distillation column having diameter ranging from 1.5 to 4.5 metres is about __________ mm.

100
150
50
10

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

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

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