Experimental Study on CO2 Membrane Separation from Flue Gas
Kratky, Lukas
Kolacny, Josef
Sulc, Radek

How to Cite

Kratky L., Kolacny J., Sulc R., 2021, Experimental Study on CO2 Membrane Separation from Flue Gas, Chemical Engineering Transactions, 86, 1075-1080.


The paper scoped to evaluate the process characteristics of polyetherimide-polyimide hollow fibre membrane module to separate CO2 of the model flue gas. The model gas was composed of 15.2 vol % CO2 + 4.5 vol % O2 + 80.3 vol % N2, as referenced to the typical composition of flue gas emitted by an LPG-fired power plant. The effect of process variables on process characteristics was researched for various differential pressures between permeate 0.2 - 0.5 MPa (a) and retentate 0.5 - 1.0 MPa (a), feed flowrates 100 g h-1 and 200 g h-1, all under the gas temperature of 30 °C. It was found out that the value of the separation factor (CO2/N2) was 6.9. The decrease of the separation factor (CO2/N2) by 4.1 compared to the ideal selectivity (CO2/N2). The separation factor (CO2/O2) was shallow; its maximum value of 1.8 was reached.