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Process Equipment and Plant Design

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
S₁/S₂
S₂/S₁
1/S₁.S₂

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Process Equipment and Plant Design
Normally, the ratio of the total riser area to the tower cross sectional area (for bubble cap towers of diameter more than 3 ft) is around

0.1-0.2
0.35-0.75
0.55-0.85
0.4-0.6

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Process Equipment and Plant Design
Factor of safety (i.e., overdesign factor) in heat transfer equipments is about __________ percent more than the actual/theoretical design factor.

15-20
35-40
30-35
43961

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Process Equipment and Plant Design
The retention time of material in a rotary dryer depends upon its

Flights arrangement
Rpm
Slope & length
All of these

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Process Equipment and Plant Design
An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

All of these
Decrease in gas solubility for absorbers
An increase in relatived volatility for rectification columns
An increase in liquid viscosity

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Process Equipment and Plant Design
What is the slope of the operating line in the stripping section of a distillation column?

> 1
< 1
?

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