Patent ID: 7811083
Filing Date: 2010-10-12
Classification: C01B,F23G,F27B

Abstract:
1. A rotary tube for a rotary tube kiln for the production of activated carbon, said rotary tube being constructed and arranged with a transitional area from a smaller inside cross section to a larger inside cross section of the rotary tube; a plurality of mixing elements arranged in the inner space of the rotary tube for a thorough mixing of a charged material, said mixing elements being constructed and arranged with a scoop-shaped form, wherein the mixing elements are inclined at least in sections to the longitudinal axis of the rotary tube, wherein the angle of incline of the mixing elements to the longitudinal axis of the rotary tube, relative to its two-dimensional projection plane, is selected as a function of the position of the mixing elements along the longitudinal axis of the rotary tube in such a manner that the mixing elements in the area of smaller inside cross section of transitional area have a smaller angle of incline than those mixing elements arranged in the direction of the larger inside cross section of the transitional area, and the mixing elements are formed in the transitional area and are arranged in such a manner that the charged material is transported during operation by the mixing elements toward the smaller inside cross section; wherein the rotary tube is provided on the outside with at least one reinforcement element for stabilizing the rotary tube during operation; and wherein the reinforcement element is designed in such a manner that the rotary tube is stabilized in its cross section and in its longitudinal extent and the reinforcement element extends peripherally around the rotary tube.