Dual fluidized microcapsule granulating system

Abstract

The invention relates to a dual-fluidized microcapsule granulating system, comprising a granulating tower, an external fluidized bed and dust-removal systems. A granulation head is arranged above the inside of the granulating tower, and the bottom of the granulating tower is connected with the external fluidized bed through a pipeline; a built-in fluidized bed is arranged on the bottom inside the granulating tower; the discharge port of the built-in fluidized bed is connected with the external fluidized bed through a tube; and a stirring device is arranged in the built-in fluidized bed. The microcapsule granulating system also comprises a coating auxiliary material bin; the bottom of the bin is communicated with the middle part of the granulating tower through a pipeline; the pipeline between the bottom of the bin and the middle part of the granulating tower is connected with a feed mechanism for conveying the coating auxiliary material; the top part of the granulating tower and the top part of the external fluidized bed are provided with the dust-removal systems; and discharge ports on the bottom of the dust-removal system are communicated with the feed port of the coating auxiliary material bin. The coating auxiliary material is dried and granulated through the fluidized bed twice, the coating auxiliary material can be recycled so as to save cost, and the stirring device improves the drying efficiency and coating efficiency, so that particles and microcapsules have excellent particle effect.

Description

technical field [0001] The invention relates to a microcapsule granulation system, in particular to a double-fluidization microcapsule granulation system. Background technique [0002] Microcapsule technology is a technology that uses natural or synthetic polymer film-forming materials (wall materials) to embed liquid or solid drugs (capsule materials) to form tiny capsule particles with a diameter of 100-5000 μm. [0003] The process of preparing microcapsule particles is called microencapsulation technology, or microencapsulation for short, and is widely used in medicine, food, pesticide, feed, cosmetics, dyes, adhesives, carbon paper and other fields. [0004] Drug microencapsulation has many advantages: [0005] 1. It can reduce the incompatibility between drugs in compound preparations and isolate the reaction between drug components. [0006] 2. Mask the bitter or peculiar smell of drugs, such as sulfa drugs. [0007] 3. Controlled drug release. [0008] (1) Contro...

AI Technical Summary

Problems solved by technology

This equipment is mostly produced in batches, which cannot meet the requirements of assembly line production, and the shape of the product particles is irregular. At the same time, the boiling granulation system uses hot air to dry, and it is also helpless for heat-sensitive and easily oxidized materials.

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