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2 Inch Line From Tube Channel Cover Of S&t Exchanger
Started by go-fish, Feb 17 2020 02:20 PM
3 replies to this topic
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#1
Posted 17 February 2020 - 02:20 PM
I have a S&T exchanger P&ID which I am using as a reference. It has process (hydrocarbon vapour) on the cold shell side and HP steam on the hot tube side. There is a 2 inch line from the channel cover below the tube partition plate provided with manual isolation valves. The line splits into a T- arrangement with both the branches indicated open to atmosphere at safe location.
Please can someone give an idea of the purpose of this line and when is it used.
Please can someone give an idea of the purpose of this line and when is it used.
#2
Posted 17 February 2020 - 10:33 PM
I suspect the line is to vent inert gas. Inerts in condensing steam tend to accumulate above the liquid level instead of at the top. The line might be used whenever there seems to be a need to flush air from the exchanger.
#3
Posted 18 February 2020 - 01:26 PM
@Pilesar
Thanks for your reply. I was suspecting it to be same.
Thanks for your reply. I was suspecting it to be same.
#4
Posted 18 February 2020 - 11:33 PM
You say isolation valves, not singular. The replies are probably correct, but an exchanger drawing would provide certainty.
Bobby
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