Abstract
To improve the efficiency in of the separation and purification of gases by the method of gashydrate crystallization, the possibility of combining it with the membrane method has been studied. A mathematical model has been proposed for the hybrid-membrane gas-hydrate method. The application of membrane methods in gas-hydrate crystallization has been shown to prevent admixtures from concentration in a crystallizer and, thus, to considerably improve the efficiency of the gas separation and purification process. The proposed model of gas separation and purification was used to calculate the ratio of freon-12 purification from nitrogen and oxygen. The application of membrane gas separation with the purpose to prevent an admixture from concentration in a crystallizer was shown to increase the efficiency of freon-12 purification from nitrogen and oxygen via gas-hydrate crystallization by more than an order of magnitude at a high product takeoff (no less than 0.6).
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