Abstract: In an apparatus for the treatment of substances in a gas stream, in particular for the absorption and/or adsorption or filtering of gases, a plurality of annular treatment spaces, which are arranged concentric to a vertical axis in each case and are used for receiving a treatment medium and which divide the inner space of a casing of the apparatus into a first and a second chamber, are provided one above the other. Each treatment space has fresh treatment medium supplied to it at an upper opening in each case by way of at least one duct. An evacuation apparatus for removing the treatment medium is provided at the lower outlet opening of each treatment space.

Abstract: The invention relates to an apparatus for the treatment of substances in a stream of gas, especially for the absorption and/or adsorption or for the filtration of gases, having a first chamber, having a second chamber, and having a plurality of cells situated axially one over the other between the first and second chambers, these cells being separated from one another and from the first and second chamber by walls and having in one of the walls at least one upper inlet opening in the upper part and in another wall at least one lower outlet opening in the lower part for a medium moving downwardly through the cells and consisting of solid particles, fresh medium being fed to each cell through the upper inlet opening and the medium being carried out of each cell through the lower outlet opening by a sweeping means moving transversely relative to this cell or perpendicularly to the axial direction, and wherein a gas forming the gas stream enters the cells at least partially at the outlet apertures and flows throu

Abstract: The present invention relates to a filter apparatus for the purifying of gases, having at least one filter space which has at least one upper inlet and one lower inlet for a filter medium containing solid particles which passes through said space, the gas to be purified flowing through said space in countercurrent to the filter medium. In this filter apparatus, at least one removing device which moves relative to the filter space, for instance a scraper, is provided at the outlet for the filter medium, said device moving through a cone of the filter medium which forms at the outlet so as to remove, in each case, at least a part of the filter medium from the cone.