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[Lib]

Vent and drain sizes for Pressure vessels can be defined based on the overall volume of the vessel. Is there such a requirement for Shell and Tube Heat exchangers?

I understand that horizontal STHEs can be drained through their process connections. additionally each compartment may require it's own vent and drain connections. However, i haven't come across any recommendations for the sizes for these.

[Napo]

Lib,

 

From Ludwig E., Applied Process Design for Chemical and Petrochemical Plants: Volume 3, p. 53 we have the following recommendation: "A 1 in-6000 lb half or full coupling is recommended for both vent and drain, unless other sizes are indicated."

 

Napo.