Abstract: An adsorption medium reactor has a plurality of removal hoppers for removing flowable adsorption medium from the reactor. Each one of the removal hoppers has at least one removal opening. A common collecting funnel is arranged below the removal openings of the removal hoppers. The common collecting funnel has a removal device for emptying the common collecting funnel. Each one of the removal openings of the removal hoppers is slot-shaped and has two parallel-extending limiting edges. A rotary gate with at least one gate chamber is arranged below each one of the removal openings. The rotary gate is limited by a substantially cylindrical circumferential wall. The cylindrical circumferential wall has a plurality of inlet/outlet openings adapted to a cross-section of the corresponding removal opening. The inlet/outlet openings are arranged in a row axially adjacent to one another parallel to an axis of rotation of the rotary gate.