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Chemical Engineering - Process Equipment and Plant Design

Exercise : Process Equipment and Plant Design - Section 4
26.
The retention time of material in a rotary dryer depends upon its
rpm
slope & length
flights arrangement
all (a), (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.
molal flow rate of vapour
vapour molecular weight
pressure and temperature
all (a), (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Rotary driers are most economically designed for the number of heat transfer units (HTU) from
0.01 to 1
1.5 to 2.5
5 to 10
10 to 20
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
The difficulty of liquid distribution in packed towers is accentuated, when the ratio of tower diameter to packing diameter is
< 30
< 7
> 7 < 15
> 20 < 50
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator
is economical in operation.
employs high velocity, high heat transfer rate and less heating surface requirement.
employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle.
both (b) & (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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