VERFAHREN UND VORRICHTUNG ZUM TRENNEN UND TRANSPORTIEREN VON GASEN UND/ODER VON DURCH DISSOZIATION AN OBERFLAECHEN ENTSTANDENEN GASMOLEKUEL-BRUCHSTUECKEN DURCH OBERFLAECHENDIFFUSION

摘要

Gases are separated or conveyed by surface diffusion using a solid body (28) traversed by extremely narrow passages (34). Because of the relatively high flow resistance due to the extremely small cross-section of the passages, the gas can be conveyed through the solid body (28) almost exclusively by surface diffusion. Consequently, only gases particles (42) adsorbed on the solid body (28) or on the walls of the passages (34) are conveyed through the solid body (28). The surface diffusion can be controlled by suitable choice of the gas/solid body combination. The diffusion is affected mainly by the temperature of the solid body (28). If, in the case of a two-gas mixture, the solid body (28) is heated to a temperature above the desorption temperature of one gas (44) and below the desorption temperature of the other gas (42), only the particles of gas adsorbed on the walls of the passage are conveyed by surface diffusion.