Abstract: An absorber or desorber contains a layer (10) for a structured packing which has corrugations, wherein a plurality of open channels (12, 14, 16) is formed by the corrugations, wherein the channels include a first corrugation valley (22), a first corrugation peak (32) and a second corrugation peak (42). The first corrugation peak (32) and the second corrugation peak (42) bound the first corrugation valley (22), wherein the first and second corrugation peaks have a first apex (33) and a second apex (43). An indentation (34) extending in the direction of the first apex (33) is formed on the first apex (33) of the first corrugation peak (32). The first corrugation valley (22) has a valley bottom (23), wherein the normal spacing (27) of at least one point of the indentation (34) from the valley bottom (23) of the corrugation valley (22) is smaller than the normal spacing (28) of the first apex (33) from the valley bottom (23) of the corrugation valley (22).

Abstract: An absorber or desorber contains a layer (10) for a structured packing which has corrugations, wherein a plurality of open channels (12, 14, 16) is formed by the corrugations, wherein the channels include a first corrugation valley (22), a first corrugation peak (32) and a second corrugation peak (42). The first corrugation peak (32) and the second corrugation peak (42) bound the first corrugation valley (22), wherein the first and second corrugation peaks have a first apex (33) and a second apex (43). An indentation (34) extending in the direction of the first apex (33) is formed on the first apex (33) of the first corrugation peak (32). The first corrugation valley (22) has a valley bottom (23), wherein the normal spacing (27) of at least one point of the indentation (34) from the valley bottom (23) of the corrugation valley (22) is smaller than the normal spacing (28) of the first apex (33) from the valley bottom (23) of the corrugation valley (22).

Abstract: The valve cover has a pair of tabs at the ends that are inserted into end sections of an orifice in the tray deck. The tabs of the valve cover abut against the underside of the tray deck while a pair of sloped portions of the valve cover rest on the top side of the tray deck in order to hold the valve cover in place.

Abstract: The valve cover has a pair of tabs at the ends that are inserted into end sections of an orifice in the tray deck. The tabs of the valve cover abut against the underside of the tray deck while a pair of sloped portions of the valve cover rest on the top side of the tray deck in order to hold the valve cover in place.

Abstract: A flat structural element has a plurality of openings which are distributed according to a predetermined pattern for use in packings. Every opening is delimited by the edges, which extend at an angle to each other or are curved. The structural element is made from two or more adjacent strips of flat material which are connected to each other with butt or overlapping connections.

Abstract: A regular packing element for mass transfer and heat exchange columns has coarsely folded layers each being made of a thin foil-like material such as sheet metal. Both the front and back surfaces of the layers are provided with an identical fine structuring or patterning defining a network of crossing channels with bases. The channels are bounded by the flanks of, for example, pyramidal protuberances and depressions.Because of the fine structuring, the liquid flowing along the channels is distributed uniformly over the surfaces of the layers by capillary action and gravity. Also, satisfactory cross-mixture of the liquid occurs since liquid can flow between channels at the channel intersections.

Abstract: The packing layers are constructed with parallel bridges between which a plurality of parallel angularly disposed deflecting surfaces are connected in bannister-fashion. The packing layers can be made from flat sheet metal bodies which can be punched and bent to form the various layers.

Abstract: The packing is made up of layers each of which is deformed into a zig-zag shape. Each layer has contiguous rows of deflecting surfaces which are interconnected by bridges and with every other deflecting surface being stamped out so as to be bent out of the plane of the layer. The stamped out deflecting surfaces of adjacent rows are offset from one another by the width of one deflecting surface and are bent out of so far as to be parallel to the next flank.

Abstract: The random or statistical packing is of hexagonal cross-section and has rectangular tongues and apertures punched out of the walls. The tongues extend towards the longitudinal axis of the packing with the opposite tongues being coplanar. The planes of the tongues are substantially parallel to the sides of the packing so that crossing channels arise for the passage of a gas. The packing has substantially the effect of a regular packing such that a satisfactory lateral distribution of liquid and gas with a relatively low pressure drop is obtained.