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Process Equipment and Plant Design

Process Equipment and Plant Design
The average velocity in the tubes of a 1-4 heat exchanger is __________ times that in 1-1 heat exchanger having the same size & number of tubes and operated at same liquid flow rate.

4
43834
43832
2

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Process Equipment and Plant Design
Lug support is

The most suitable for thick vertical vessel
Provided usually for vessels of much smaller height than skirt supported vessels
Same as bracket support
All of these

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

Rpm
Slope & length
Flights arrangement
All of these

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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

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

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Process Equipment and Plant Design
Vertical vessels are not supported by

Columns
Brackets
Skirts
Saddles

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Process Equipment and Plant Design
With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.

Vapour & liquid load both
Fixed charges initially
Running cost of cooling water for condenser
Running cost of steam for reboiler

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