Using Composite Membrane Contactors with Polyamide Functional Layer for Co2 Separation. Article number ICEPTP 185

0557201 - ÚCHP 2023 eng A - Abstract
Pasichnyk, Mariia - Stanovský, Petr - Izák, Pavel - Šyc, Michal
Using Composite Membrane Contactors with Polyamide Functional Layer for Co2 Separation. Article number ICEPTP 185.
[World Congress on Civil, Structural, and Environmental Engineering (CSEE'22) /7./. "Online", 10.04.2022-12.04.2022]
Method of presentation: Přednáška
R&D Projects: GA MŠMT(CZ) EF16_026/0008413
Institutional support: RVO:67985858
Keywords : membrane * separation of CO2 * absorption flux
OECD category: Chemical process engineering
https://avestia.com/CSEE2022_Proceedings/files/paper/ICEPTP/ICEPTP_185.pdf

In this work, a thin film composite membrane with a polyamide functional layer (Toray, TM 710D) was used for the separation of CO2 from the gas stream. Parts of these spiral membrane modules were tested as flat sheet membranes with an active area of 24 cm2. Membrane thickness was 130 µm with functional polyamide layer having a thickness of about 500 nm. The testing bench used in this research consists of four main parts: gas mixture preparation system, a solvent loop with constant temperature, membrane module and gas concentration measurement system. The separation was measured for pure CO2 and for the mixture of 15 vol.% CO2 in nitrogen to simulate common flue gases. Demineralized water was chosen as an absorption solution before testing others CO2 suitable solvents. The effects of several variables, such as gas flow rate, absorbent flow rate, gas pressure and cell internal geometry on the removal of CO2 from flue gas, were investigated. The gas flow rate was kept at 50 mL·min−1 while the liquid flow rate was 3.23 L·min−1. It was found that the CO2 removal efficiency increased with the increasing of gas pressure from 1 to 4 Barr for pure CO2. The absorption flux was changing from 2.39
·10-5 to 3.35 ·10-4 mol·m−2 s−1, and the removal efficiency changed from 0.2 to 2.2 % in the cell with mass transfer limitation due to porous steel support on the liquid side. The increase of gas pressure conditions has a slight effect on CO2 removal efficiency, showing application prospects. Using the model solution of flue gases (15 vol.% CO2 in Nitrogen), the absorption flux decrees to 4.48 · 10-5 mol·m−2 s−1. Absorption fluxes are comparable with membrane contactors for SO2 and indicate that the membrane can be applied to CO2 capture from the flue gas after optimization of hydrodynamic conditions in the contactor leading to higher removal efficiency.
Permanent Link: http://hdl.handle.net/11104/0331267