Patent ID: 6170805
Filing Date: 2001-01-09
Classification: B01J,Y10S

Abstract:
A material exchange column comprising a packing that is installed in the horizontal position of the column, the column having a ring gap between the packing and a column wall in which collars are arranged that each comprise a band-shaped region that lies in contact with the packing, wherein at least some of the collars have elevations in their band-shaped regions that hold the ring gap open in a form-stable manner under the load of the packing when the column lies horizontally, wherein the collars that are arranged in the ring gap each have subsurfaces in the shape of triangles bounded by straight bend lines in their band-shaped regions, wherein the elevations are arranged in the inner regions of these subsurfaces, wherein at an upper edge of the band-shaped regions, bridging pieces are provided that define first indentations therebetween and at a lower edge of the band-shaped regions, a folded part is provided that includes second indentations, and wherein the first indentations are displaced with respect to the second indentations.