Device for the continuous treatment of solids in a fluidised bed apparatus

Abstract

The invention relates to a device for continuously treating solids in a fluidised bed apparatus, comprising a round process chamber with a solids inlet and a solids outlet, and a distributor plate which is adapted to the inner contour of said process chamber and beneath which a media inlet is arranged to produce and maintain the fluidised bed. According to the invention, on said distributor plate (1) there is a separating wall (2) that protrudes radially inwards from the process chamber (3, 9) inner wall (10) and into said process chamber (3, 9). The solids inlet (5) is located on one side close to the separating wall (2), and the solids outlet (6) is on the other side close to the separating wall (2). It is particularly advantageous to arrange, on the distributor plate (1) and along the axis of the process chamber (9), a displacer element (8) that is connected to said separating wall (2). This has the advantage that, in a process chamber that has a round cross-section while the fluidised bed is also flat, an evenly directed flow of solids in the horizontal direction is obtained over a longer distance. Such a device allows a narrow spectrum of residence time.

Description

technical field [0001] The invention relates to a device according to the preamble of claim 1 for the continuous treatment of solids in a fluidized bed plant, for example for spray granulation, agglomeration, encapsulation, coating or drying etc. to produce free-flowing particles. Background technique [0002] In order to obtain an end product with a defined particle structure, the solids are treated in a continuous fluidized bed with vortex layers. For this purpose, devices with rectangular geometry devices are known, in which the material to be treated is conveyed from its inlet into the treatment chamber to its outlet out of the treatment chamber via the length of the device or due to the inclination of the fluidization tank. Degree of automatic flow, so as to be fully fluidized in the area of ​​the vortex layer. While passing through this path, the material to be treated comes into contact with the corresponding fluidization medium in the vortex layer. [0003] Every ...

AI Technical Summary

Problems solved by technology

But in this device, the vortex layer is relatively high, so the residence time distribution spectrum is very large, and therefore the application of this device to the continuous treatment of solids is not considered

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