CO2 removal from O2 in Diving application
CO2 removal from O2 in Diving application
(OP)
I wonder if it would be possible to remove CO2 from an oxygen mixture used in breathing apparatus.
By remove I mean reduce by a percentage (50% would be nice). I will be continuously recirculating the gas through the membrane. The gas mix will be 98% oxygen and 2% CO2. There will be a high water vapour content so the membrane should be able to tolerate this. The delta P that we have to work with is 30 psi (2 bar).
Is this a non starter?
By remove I mean reduce by a percentage (50% would be nice). I will be continuously recirculating the gas through the membrane. The gas mix will be 98% oxygen and 2% CO2. There will be a high water vapour content so the membrane should be able to tolerate this. The delta P that we have to work with is 30 psi (2 bar).
Is this a non starter?





RE: CO2 removal from O2 in Diving application
Se e.g. US 3,910,780 and other patents citing this one (bonaventuraa, Trachtenberg etc. Articles see e.g. Li and Teo, Trans IChemE vol 74 A nov 1996, pp856
yours
Jost
RE: CO2 removal from O2 in Diving application
Do you have any more reference material that you think might be relevant to my research.
Fred
RE: CO2 removal from O2 in Diving application
Also search for patents covering gas purification via membranes etc
I only provided you with a good startingpoint.
Fluid = gas or liquid.
A lot of the stuff is relevant for both liquid and gas.
Gas to gas is also possible, ie purifying air from CO2 in space applications via membranes.
This is definately not a non starter. This kind of equipment can be built!
Trust your instinct
jost
RE: CO2 removal from O2 in Diving application
Loss of water is also an issue, most membranes permeate water faster than O2 or CO2.
RE: CO2 removal from O2 in Diving application
The loss of water is not as much of a problem as ability to tolerate water vapour. The best membrane will retain most of the oxygen and pass carbon dioxide and water vapour at a low differential pressure (2 bar)
RE: CO2 removal from O2 in Diving application
If that much loss of O2 is acceptable, I will try to get a better model with exact figures
Dave