What is the role of extracting medium-pressure nitrogen from the lower tower?
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This post was last edited by Jiu Du Cao on 2012-7-20 08:17. What is the role of extracting medium-pressure nitrogen from the tower? I hope the master can give some guidance.
This post was last edited by jiao*aoli1976 on 2012-7-20 at 23:15. The nitrogen extracted from the tower here is used as a cooling source in the evaporator of the pure argon tower. I’m sorry, I made a mistake. On the condensation side of the pure argon column evaporator, nitrogen gas at pressure from the top of the lower column is used as a heat source to vaporize the liquid argon at the bottom of the pure argon column; this resulting vapor rises upward, while the nitrogen gas is condensed into liquid nitrogen, which is then returned to the upper column after being throttled. I’m sorry!
According to the moderator, if there are other cold sources, it’s okay not to draw air?
It should be possible; just produce liquid nitrogen. Personal opinion, for reference only.
It would be better to wait for experts in design to answer this question; my personal understanding is that there are issues related to material balance as well as energy balance.
It might also be sent to users after reheating; it mainly depends on the requirements.
Remove the nitrogen from the tower; the evaporator in the pure argon tower serves as the heat source! How could it possibly be a cold source? Even the condenser of the pure argon column does not use the nitrogen gas from the lower column as a cooling source.
I made a mistake; I’m sorry. It has been corrected already. Thank you for pointing it out!
Here, nitrogen is drawn from the lower tower to serve as a heat source for the pure liquid argon at the bottom of the refined argon tower; after condensing, the nitrogen turns into a liquid, and after throttling it is sent to the top of the refined argon tower as a cooling source
The extraction of nitrogen from the lower tower seems to be related to some kind of law, but I just can’t figure out what that law is, nor do I have any explanations for it.
Is there a process? It’s hard to say without one; different processes serve different purposes