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Vent And Drain Sizes For Shell And Tube Hex

sthe s&t nozzle size

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#1 Lib


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Posted 04 February 2020 - 01:02 AM

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.

#2 Napo


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Posted 04 April 2020 - 08:27 AM



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."



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