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For nitrogen sealing control, how should the flow rate of the control valve be designed, and what is the basis for this?

2017-11-15View Original

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http://attach01.hcbbs.com/forum/month_1008/100831094866964dde6b5716a8.jpg As shown in the image: For nitrogen sealing control, how should the flow rates of the nitrogen and flare line control valves be designed, and what are the criteria for this?
Reply #22017-11-16
As much nitrogen as liquid is lost must be replenished
Reply #32017-11-16
What about the flow rate of the torch control valve? Is there any evidence?
Reply #42017-11-16
What about the flow rate of the torch control valve? Is there any evidence?
Reply #52017-11-16
Does the direct flare line for tank overpressure activation turn on automatically?
Reply #62017-11-16
Isn’t the nitrogen seal set based on pressure? How is traffic controlled?
Reply #72017-11-16
Check hg20570, commonly known as large breathing volume + small breathing volume
Reply #82017-11-17
You can check the pinned posts in this version to find free options for meeting such needs, or search on Baidu for “Daxueshi””
Reply #92017-11-17
【Process Discussion】Calculation of the venting volume at the top of atmospheric vertical storage tanks https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1577941 (Source: Haichuan Chemical Industry Forum) I have considered this issue before; it involves the calculation of large-scale breathing and small-scale breathing
Reply #102017-11-17
Use a torch seal to prevent backfire; a slight positive pressure of nitrogen using a molecular seal is sufficient

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