Process Equipment and Plant Design
Pick out the wrong statement pertaining to shell and tube heat exchanger.

Tie rods are fixed at one end in the tube sheet by making blind holes and the minimum number of tie rods is 4 with at least 10 mm diameter
Clearance between shell & baffles and between tube & baffles should be minimum to avoid by-passing of the fluid, but it should be enough to permit the removal of tube bundle
Bracket supports are used for horizontal shell, while saddle support is used for vertical shell
Baffles are supported independently of the tubes by tie rods and positioned by spacers

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

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

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