Abstract: Method for the purification of a gas stream loaded with organic gases or vapors, especially up to near the saturation limit, in a sorption filter, in which the gas stream loaded with organic gases or vapors is mixed with a gas conducted in a loop, and together with the latter is conducted through the sorption medium layer of the sorption filter, the volumetric flow of the circulating gas being larger than the volumetric flow of the gas to be purified. After the mixed gas stream is conducted through the sorption medium layer, a partial stream of the now purified gas is branched off and removed, where the volumetric flow of the branched-off gas corresponds to the volumetric flow of the gas to be purified and where the remainder of the purified gas is returned to the mixing point as circulating gas and is mixed there again with the gas to be purified.

Abstract: Method for operating a sorption filter in which the sorption filter separates absorbable admixtures of a gas stream and is regenerated by a heated gaseous desorption medium after being loaded to an equilibrium loading corresponding to the admixtures. The gas stream to be purified is conducted through at least two sorption material layers, with the flow going through all sorption material layers in the manner of a parallel circuit. In the desorption of the loaded sorption material layers, the gaseous desorption medium flows in series through the sorption material layers.