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Water seal drum for Flare system
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Posted by: ppnayak

05/10/2010, 23:50:10

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I am working on Flare system and have a problem on design of water seal drum (WSD). Can anyone tel me how do I determine the inlet leg, submerged height and size of water seal drum for vacuum condition of -0.2 kg/cm2g in flare header? Though API 521 gives equations for determining submerged height for header back pressure, it gives only guidelines for WSD design under vacuum. I am not very clear on how to use these guidelines for determining the WSD parameters as stated above. The guideline says that the volume of liquid in inlet line at max vacuum shall be obtained from seal drum. Can anyone elaborate on this statement?

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