# Talk:Supercritical fluid

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## Natural occurences - submarine volcanoes

This section is rubbish. It confuses two very different natural phenomena - volcanoes and hydrothermal circulation, which can be closely related but are not the same thing at all. I'm going to attempt to completely re-write this.

139.166.247.131 (talk) 15:24, 6 February 2014 (UTC)

## Graph

What's with the graph? Cleanup this articles, requires. Wobblies 21:40, 14 June 2007 (UTC)

## Edit Supercritical Fluids

I have changed the article in line with my previous comment. I have tried to keep the information as it was previously, and included all the applications, added a new article under "supercritical fluid extraction". Work is ongoing, any comments welcome.Stainless316 (talk) 11:02, 7 January 2008 (UTC)

## Room pressure supercritical fluid

• Is there any supercritical fluid at pressure?--MathFacts (talk) 15:01, 23 July 2009 (UTC)
• The "therefore" in the part which describes the property of ${\displaystyle N_{2}}$ in the high-pressured tank does not make sense. The logic ought to be like :a) nitrogen (or compressed air) in a gas cylinder above this pressure is actually a supercritical fluid and b)nitrogen in a gas cylinder behave like a kind of ordinary gas --> they are called "permanent gases".

## mislabeled vertical axis?

Am I confused or is the diagram mislabeled? In both the "supercritical fluid" and "supercritical carbon dioxide" articles, the diagram has a vertical axis in P(bars), and shows the critical point of CO2 at about 7 bars. The text in both places gives the critical pressure as 7.38 MPa, aka 73.8 bars. I'm not confident enough in this area to go altering the diagram (which in any case would require me to learn how to edit SVG), but it certainly looks to me like the diagram is wrong. I'd love an explanation one way or the other. Paleolith (talk) 17:31, 12 March 2012 (UTC)

## re: Carbon capture and storage and enhanced oil recovery

The section titled Carbon capture and storage and enhanced oil recovery contains the following sentence:

```'....The CO2 is separated from other flue gases either pre- or post-combustion.....'
```

Separating CO2 from other flue gases pre- combustion does not make sense, for two reasons. First, flue gas describes the gas created by combustion, so there is no pre- combustion flue gas. Second, CO2 is present only in minute quantities prior to combustion, so it isn't really available to be separated pre- combustion. — Preceding unsigned comment added by 24.250.167.105 (talk) 17:42, 23 September 2012 (UTC)

## Thermodynamics of supercritical fluids

I feel something strange in the style of the text while reading the second paragraph of this section. And there is a duplicate reference in it as well. Maybe someone else smells the fish? 82.31.160.48 (talk) 00:51, 8 August 2014 (UTC) Let me stress it again - I feel that Mr. Bolmatov might be trying to use Wikipedia to promote himself a bit.131.227.125.163 (talk) 13:12, 16 January 2015 (UTC)

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## Natural occurrence/ Planetary atmospheres

This section describes temperatures being far above the critical point but then goes on to describe a smooth transition to liquid. There should be no liquid above the critical temperature. 2600:387:2:805:0:0:0:86 (talk) 03:07, 28 November 2016 (UTC) BGriffin