Process Equipment and Plant Design
Shortest distance between two tubes is

Called tube pitch
More in case of triangular pitch as compared to square pitch of tube layout
Called tube clearance
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.

Generally, a skirt clerance of 0.5" to 1.5' is recommended to prevent plugging of the slots by residue build up
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
None of these

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