Method of separation of hydrogen from gas mixtures

Details Method of separation of hydrogen from gas mixtures Method of separation of hydrogen from gas mixtures

B - Operations, Transporting

01

D

B01D 53/04 (2006.01)

Patent

CA 2696530

A method of separation of hydrogen from gas mixtures consisting in that a gas mixture with any hydrogen content is introduced into a closed space, in which a polymer foam containing non- communicating pores is placed. Due to the fact that the hydrogen partial pressure in pores of the polymer foam is lower, hydrogen penetrates into the pores. Hence, the gas mixture leaving the closed space is deficient in the hydrogen. The inlet of the gas mixture into the closed space can be interrupted at the time when the leaving mixture has the same composition as the introduced gas mixture or earlier. Then the pressure in the closed space is decreased and, due to the leveling of its partial pressure, hydrogen is released from the polymer foam and can be received for further use. Its concentration is higher than in the starting gas mixture.

L'invention porte sur un procédé de séparation d'hydrogène à partir de mélanges gazeux. Selon ce procédé, un mélange gazeux (3) avec une quelconque teneur en hydrogène est introduit dans un espace fermé (4), dans lequel une mousse polymère (1) contenant des pores non communicants (2) est placée. Du fait que la pression partielle d'hydrogène dans les pores (2) de la mousse polymère (1) est inférieure, l'hydrogène pénètre dans les pores. Il en résulte que le mélange gazeux (3) quittant l'espace fermé (4) est pauvre en hydrogène. L'admission du mélange gazeux (3) dans l'espace fermé (4) peut être interrompue au moment où le mélange partant possède la même composition que le mélange gazeux introduit (3) ou plus tôt. Ensuite, la pression dans l'espace fermé (4) est diminuée et, en raison de l'égalisation de sa pression partielle, l'hydrogène est libéré de la mousse polymère (1) et peut être reçu pour une nouvelle utilisation. Sa concentration est supérieure à celle dans le mélange gazeux de départ (3).

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