membranes for co2 separation from ng
membranes for co2 separation from ng
2
MGS (Chemical)
(OP)
i'm looking for data on the membranes for co2 removal, such as natco's cyanara or uop's separax (they are both asummetric cellulose acetate).
i was wondering if anybody has data on the co2/ch4 selectivity and co2 permeability in those membranes at normal operating temperature.
many thanks!
i was wondering if anybody has data on the co2/ch4 selectivity and co2 permeability in those membranes at normal operating temperature.
many thanks!





RE: membranes for co2 separation from ng
RE: membranes for co2 separation from ng
higher solubility in h20 ?
<nbucska@pcperipherals.com>
RE: membranes for co2 separation from ng
It is not easy to find the selectivity of those membrane from manufacturers. It depends on a lot of operating parameters such as pressure, temperature, %CO2 removal (theta value). Basically, it varies from 20-60. What i have done on this is to find an easy calculation method to estimate the selectivity to monitor the trend of selectivity deterioration.
I have a model that can be used to calculate the selectivity of CO2/CH4 which i used to monitor our membrane plant. Let see what we can share. Please feel free to contact me.
RE: membranes for co2 separation from ng
Extracting CO2 with water from NG would require enourmeous amount of water then following this extraction would be contaminated with water.
If you want to extract CO2 from NG then you use an amine type or a few other technologies.
Best Regards
Morten
(frankly i dont know understand why this post was "starred"