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Process Equipment and Plant Design

Process Equipment and Plant Design
The difficulty of liquid distribution in packed towers is accentuated, when the ratio of tower diameter to packing diameter is

> 7 < 15
> 20 < 50
< 7
< 30

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Process Equipment and Plant Design
The dust collection efficiency of a cyclone separator

None of these
Is directly proportional to the radius of the dust particle path
Decreases with increase in gas flow rate
Is inversely proportional to the mass of the dust particle

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Process Equipment and Plant Design
Optimum reflux ratio in a continuous distillation column is determined by the

None of these
Total cost consideration (fixed cost of the column plus the cooling water & steam cost)
Flooding limit of the column
Maximum permissible vapour velocity

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Process Equipment and Plant Design
Longitundinal stress induced in a thin walled cylindrical storage vessel is

PD/2t
PD/4t
PD/3t
PD/6t

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Process Equipment and Plant Design
What is the value of 'q' for saturated liquid feed to a distillation column?

>1
1

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Process Equipment and Plant Design
Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is about 200 poise. However, the baffle may be completely eliminated for mixing liquids having viscoisty above __________ poise.

1500
1000
600
300

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