Size a liquid-seal drum at the base of a flare stack — prevents flame flashback into the process network and isolates header from stack pulsation. Sized for max gas velocity ≤ 70 ft/s + seal depth that gives break pressure compatible with the flare header design.
Flow & Gas
lb/hr
lb/ft³
psig
ft/s
Drum Geometry
ft
in
in
📚 Theory
Flashback prevention, anti-pulsation velocity, seal break P, water inventory.