Abstract: Apparatus for converting feed gas (28) into a product gas (29), comprising at least one reactor (1) with a reaction chamber (15) bounded by the inner wall of an outer tube (4) closed at a first outer end and an inner tube (14) received coaxially in this outer tube (4) and provided at both its outer ends with openings, which reactor (1) is provided with an inlet chamber (11) and with an outlet chamber (10), wherein a first wall (31) of the outlet chamber (10) encloses the outer tube (4) and extends therefrom, and a second wall (12) of the outlet chamber (10) lying opposite the first wall (31) encloses the outer tube (4) and extends therefrom, and the inlet chamber (11) is bounded by the second wall (12) of the outlet chamber (10) and a third wall (47) which lies opposite this second wall (12), encloses the outer tube (4) and extends therefrom.

Abstract: Method for separating a gas mixture according to a pressure swing adsorption process (PSA process), and apparatus for performing this method, the apparatus comprising a plurality of vessels, wherein each vessel has at least one inlet and one outlet, an adsorbent mass is provided in each of said vessels for adsorbing at least one gas component, and the inlet of each of said vessels is connected to a storage vessel for an off-gas, and the inlet of each of said vessels and the storage vessel are further connected to an off-gas consuming device.