Method and device for sour gas scrubbing

A gas scrubbing apparatus comprising a scrubbing device which has at least one first scrubbing section connected in series to a second scrubbing section through which a scrubbing medium can be conveyed countercurrent to a gas mixture, where materials of a first type and of a second type can be separated off from the gas mixture so as to produce a scrubbing medium stream loaded with materials of the second type and a scrubbing medium stream loaded with materials of the first type and of the second type, a regeneration device which is connected to the first scrubbing section to partially regenerate a scrubbing medium loaded with materials of the first type and of the second type from the first scrubbing section to produce a partially regenerated semilean scrubbing medium stream which contains materials of the first type and of the second type and has a lower content of materials of the first type than the loaded scrubbing medium stream brought from the first scrubbing section, comprising the regeneration device is connected to the first scrubbing section so that at least a part of the semilean scrubbing medium can be fed directly to the first scrubbing section, wherein the regeneration device is configured as an enrichment column which in its upper region is a scrubbing column and in its lower region is a stripping column and in its middle region has an inlet via which the loaded scrubbing medium brought from the first scrubbing section can be depressurized and introduced into the stripping column.