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Process Equipment and Plant Design

Process Equipment and Plant Design
Baffle spacing is generally __________ the I.D. of the shell.

Not less than one fifth of
Both B and C
More than
Not greater than

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

All of these
Slope & length
Flights arrangement
Rpm

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Process Equipment and Plant Design
Movement of pipeline caused by thermal expansion is taken care by providing

Expansion joint
Change in the shape of pipeline
Changes in its direction
All of these

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Process Equipment and Plant Design
Pressure drop (Δp) and the superficial gas mass velocity (G) in case of packed absorption tower operating in the preloading range are related as

Δp = G2
Δp = G
Δp = 1/G0.6
Δp = G0.5

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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
0.35-0.75
0.1-0.2

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Process Equipment and Plant Design
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
All of these
Pressure and temperature

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