Abstract: A container for carbon molecular-sieve material which is designed to prevent contamination of carbon materials within the container. The container includes a hollow section with a preferably circular internal cross-section and a rectangular or square external cross-section. Attached to each end of the hollow section are screened structures designed to retain the molecular-sieve material within the hollow section. These screened structures are preferably secured in place by clamping rings. The hollow section can be hermetically sealed for transport and can be sealed by cover plates and bolts.

Abstract: Process for obtaining nitrogen from air or nitrogen-containing gases by pressure exchange adsorption and desorption on two alternately operated adsorbers filled with carbon molecular sieves, whereby air is passed through the adsorber so that the oxygen is adsorbed and enriched nitrogen is obtained, while at the same time the other adsorber is regenerated by pressure relief, whereby in a first carbon molecular sieve layer (on the air intake side) of the two adsorbers, making up 1/20 to 1/2 of the entire carbon molecular sieve layer, a carbon molecular sieve A is introduced which serves simultaneously for the adsorption of the residual humidity and gas separation, and that in a second (on the air-outlet side) carbon molecular sieve layer a carbon molecular sieve B is introduced serving exclusively for gas separation, and that the carbon molecular sieve A has a relative volume of 3.0 to 3.4 and the carbon molecular sieve B has a relative volume of 2.3 to 2.95.