Process Equipment and Plant Design
A 'rupture disc' is provided in chemical equipments as an accessory meant for

Relieving excess pressure
Enhancing mixing rate
Avoiding vortex formation
Creating turbulence

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Process Equipment and Plant Design
Triangular pitch tube layout as compared to square pitch in a shell and tube heat exchanger

Permits the use of more tubes in a given shell diameter
Facilitates comparatively easier external cleaning because of large clearance
Permits the use of less tubes in a given shell diameter
Both B and C

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