Tag Archives for Downcomer Seal

Causes of Tray Inefficiency : Loss of Downcomer Seal

We stated that the top edge of the outlet weir is maintained about 0.5 in above the bottom edge of the inlet downcomer to prevent vapor from flowing up the downcomer. This is called a 0.5-in positive downcomer seal. But … Continue reading

12. February 2020 by Jack
Categories: Tray | Tags: | Leave a comment

Loss of Downcomer Seal Due to Leaks

The vertical edges to the downcomers are bolted to bars welded to the vessel wall. These are called, “downcomer bolting bars.” Gaskets are often used to tightly seal the edge of the tray downcomer to these bars. If the bolts … Continue reading

29. March 2011 by Jack
Categories: Tower Pressure | Tags: | Leave a comment