Patent ID: 6620388
Filing Date: 2003-09-16
Classification: B01J,B21C,C01B

Abstract:
A catalyst pipe for an endothermic catalyst reaction of a process medium to form a product, comprising:an outer cladding tube which is tightly sealed at its end sides by a first base and a second base, wherein one of the bases comprises means for introducing a catalyst into said tube, said tube having an interior and a longitudinal axis and being adapted for external heating by a heating medium; rising pipe arrangement in the interior of the cladding tube forming an intermediate space therein, said rising pipe arrangement terminating in a collector and connected in a vicinity near the first base with an outwardly directly outlet for the product formed by the catalyst reaction of the process medium; and a catalyst filling arranged in the intermediate space between the cladding tube and the rising pipe arrangement; wherein the rising pipe arrangement terminates before the second base of the cladding tube so as to leave a through-gap, and wherein a feed line for supplying the process medium to the catalyst filling is arranged in the vicinity of the first base of the cladding tube, wherein the rising pipe arrangement comprises at least one physical unit, having an outer corrugated surface, wherein each physical unit comprises at least two line strands, shaped as individual tubular elements, connected to one another only along a longitudinal contact line, and wherein, out of this longitudinal contact line, the whole outer surface of the line strands is in contact with the catalyst filling.