CO2 dissolution required contact time

[Mike4chemic]

Hello All,

I check a feasibilty to inject a non-condensable gas (mostly CO2)into a water pipeline in continuous mode. The goal is to attain the complete dissolution of CO2 in water and further injection of carbonated water (as a single phase)undeground.
Based on my estimation at the given pressure, temperature and the water/gas ratio, there is a thermodynamic feasibility of the complete CO2 dissolution into the flowing water. The big question is how quickly it will happen ?
Is it possible to predict how far from the gas injection point, in terms of the pipe's diameters,thus the complete CO2 dissolution can be reached? Are there any empirical correlations/rules of thumbs, which allow to predict it, assuming there is a static mixer at the CO2 injection point.

Thanks in advance, Mike

 

[moltenmetal]

I don't think there's a shortcut for mass transfer calculations. Perhaps someone in the bottling industry would have a rule of thumb to use, but your situation will vary with CO2 partial pressure and what else is in the water affecting the pH.

 

[EdStainless]

And the gas solubility of water is higher when the water is colder, so Temp will be a major factor.

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P.E. Metallurgy, Plymouth Tube

 

[bimr]

There are companies that make equipment to do this.

Carbon Dioxide equipment