Device and method for separating substances

The invention relates to a device for separating substances by means of countercurrent washing, having a container with a first end region, at which a first inlet orifice for the ingress of a substance mixture and a first outlet orifice for the egress of a substance component to be separated from the substance mixture and of a washing fluid are provided, with a second end region which is located axially opposite the first end region and at which a second inlet orifice for the ingress of the washing fluid and a second outlet orifice for the egress of a further substance component of the substance mixture and of the washing fluid are provided, and with a displacement region which is provided between the first end region and the second end region, the displacement region merging into the second end region by a transitional cross section. The device is characterized, according to the invention, in that a feed means, which is connected conductively to the second inlet orifice, is arranged in the region of the transitional cross section for introducing the washing fluid over a large area, and in that at least one movement member is provided for the controlled introduction of kinetic energy into the displacement region. The invention relates, furthermore, to a method for separating substances by washing with a washing fluid.