Process Equipment and Plant Design
Power required for agitation depends upon the

Agitator type & speed of agitation
Height & properties of the liquid
All of these
Size of agitator & the tank

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Process Equipment and Plant Design
Bubble cap tray is the most commonly used tray in large distillation column, because

It eliminates the foaming and entrain-ment tendency during operation
Of its flexibility and nearly constant efficiency under varying conditions of operation
It incurs less pressure drop as compared to any other try designed for the same duty
None of these

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of the distillation column.

The purpose of the slot is to disperse the gas into the liquid in the form of small bubbles
If sufficient slot area is not provided, the gas may pass through the skirt clearance
Generally, a skirt clerance of 0.5" to 1.5' is recommended to prevent plugging of the slots by residue build up
None of these

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