SEPARATION OF HYDROGEN-HELIUM MIXTURES BY A MEMBRANE-SORPTION METHOD
V. M. Fomin1,2, A. S. Vereshchagin1,2,3, V. N. Zinov’ev1, I. V. Kazanin1,2, I. A. Mayor1,2
1Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk State University, Novosibirsk, Russia
3Novosibirsk State Technical University, Novosibirsk, Russia
Keywords: silica microsphere, helium, hydrogen, membrane-sorption method, gas separation
Abstract
The gas separation process via a membrane-sorption method шs investigated using a hydrogen-helium mixture and silica microspheres. Experimental and numerical modeling of a two-stage membrane-sorption process for hydrogen-helium mixture separation is carried out. The experimental two-stage separation at 22°C demonstrates an increase in the helium volume fraction from 10.5% in the feed to 57.8% after the first stage and 93.3% after the second stage. Evidently, the final helium volume fraction in the enriched stream is primarily influenced by the amount of depleted mixture remaining in the adsorber prior to the desorption cycle.
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