Self-venting pipe in Crude Tower Draws

[lgmarti]

Do the draws from a Crude tower need to be sized for aerated fluid? What is the recommended length of the self-venting pipe. Could the diameter of the pipe be decreased within a couple of feed from the nozzle?

 

[25362]

I suggest reading Distillation Operation by Henry Z. Kister (McGraw-Hill) especially Chapters 4 and 5, as well as Process Design for Reliable Operations by Norman P. Lieberman (Gulf) to get an idea on the subject.