Method and apparatus for the treatment of fine-grained material in a spouted bed

Abstract

The invention relates to a method and an associated apparatus for treating fine-grained material in a spouted bed. The aim of the invention is to devise a method and design an associated apparatus for treating fine-grained material in a spouted bed which eliminate the drawbacks of the prior art, allow different process conditions in the process chamber to be adjusted in a regulated manner, and has a simple and inexpensive structure.; The disclosed method is characterized in that a nearly circular gas flow of the fluidizer is generated in the process chamber (5) by means of an external annular gap (7) lying on the y-z plane, the diameter of said nearly circular gas flow expanding outward in the direction of the x axis inside the process chamber (5), and a nearly circular gas flow of the fluidizer is generated by means of an internal annular gap (8) lying on the y-z plane, the diameter of said nearly circular gas flow expanding inward within the process chamber (5).; The disclosed apparatus is characterized in that a displacement member (2) and an annular central contour (9) are centrally disposed in the lower region of the process chamber (5) in such a way that an internal annular gap (7) is formed between the displacement member (2) and the inner contour of the annular central contour (9), while an external annular gap (8) is formed between the outer contour of the annular central contour (9) and the lower outer edge of the process chamber (5) in order to feed the fluidizer.

Description

technical field [0001] The invention relates to a method for treating fine-grained materials in a spouted bed (Strahlschicht) having the features stated in the preamble of claim 1 and to a method related thereto having the features of claim 8 equipment of the characteristics described in the preamble. Background technique [0002] From DE 103 22 062 A1 a method and a device are known for applying a liquid to the solids flow of a spouted bed arrangement. The spouted bed arrangement is additionally characterized in that it is equipped with a single or double embodiment with a rectangular reaction chamber and a gas inflow arranged forcibly in the axial direction of the reaction chamber. In the case of several reaction chambers, the reaction chambers are connected to one another via material overflows. In the case of spraying liquids, the necessary nozzles are arranged centrally in the spouted bed arrangement. The gas inflow device is configured to be adjustable to vary the a...

AI Technical Summary

Problems solved by technology

[0003] Disadvantages of this method and device are: high manufacturing precision is required for the gas inflow device in order to ensure a uniform inflow over the entire length of the device

[0005] Disadvantages of this type of spouted bed installations are that uniform wetting of the material particles with a liquid is very problematic with such an installation, and moreover problems arise in the plant with regard to the creation and maintenance of the spouted bed for high production rates

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