Experiment on Gas Mixture Separation by the Molecular Exchange Flow

(Received November 28, 2016, Accepted January 25, 2017) A model gas separator that makes use of the molecular exchange ‰ow through porous membrane of 18 cm2 area is fabricated. The eŠect of molecular exchange ‰ow is accumulated by the counter ‰ow of gas mixture that ‰ows around the membrane. The half part of the device concentrates light molecules, and the other concentrates heavy molecules. This study demonstrates the capability of the device to make two ‰ows of diŠerent gases whose diŠerence of mole percentage is around 6.5 from a continuous feed ‰ow of 3 sccm helium-neon 50 mixture. The eŠect of the product ‰ow rate and the ‰ow rate around the membrane are also investigated.