Fluid bed granulation process and apparatus

Abstract

The present invention provides a fluid bed granulation process of an appropriate substance, comprising the cooling in a second fluid bed of the granules obtained. The same flow of fluidification air is used to form and support both fluid beds.

Description

technical field [0001] The bulk of the invention generally relates to the fluid bed granulation process of suitable materials such as urea, ammonium nitrate, ammonium chloride and similar readily granulated materials. [0002] In particular, the invention relates to a fluidized bed granulation process, wherein the granules obtained are cooled in a second fluidized bed, from which they are sent to storage and / or are packaged. [0003] The invention also relates to a granulation device for carrying out the above-mentioned method. Background technique [0004] In the fluidized bed granulation process, predetermined material granules are produced by continuous growth (in volume and mass) of a seed species of material continuously fed into said fluidized bed, and simultaneously fed with an appropriate flow of liquid growing material. acquired. The growing substance is a substance having the same properties as the substance being granulated, and is liquid, suitable for wetting, ...

AI Technical Summary

Problems solved by technology

[0011] While there are advantages to both viewpoints, there are serious recognized disadvantages to fluid bed granulation processes of the type described above

[0012] In fact, in such a method, in addition to the need to supply a large amount of air in order to form and maintain the granulation fluidized bed, it is necessary to continuously supply a larger amount of air to form and maintain the cooling fluidized bed; energy, which negatively affects the cost-effectiveness of the method

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