Technique for producing grain with one-step method containing atomization, fluidization, granulation and dessication

Abstract

The invention discloses a one-step method granulation production technique of spray-fluidization granulation dryness, which is characterized in that: firstly, the sponging drying disposal of liquid main material is carried out at the upper part in a spraying drying chamber to complete the drying of seed powders; subsequently, the seed dry powder is vertically deposited in a lower granulation area in the drying chamber and is arranged in a suspended fluidization state by a fluidized bed device when another way of liquid auxiliary material is also atomized as fine droplets and sprayed on the seed dry powder to carry out the granulation drying disposal together and complete the granulation drying; subsequently, the product powder prepared by the granulation drying is exhausted and the granulation is realized by the disposal of a pneumatic delivery cooling and fine powder returning device and is collected in a material bucket; furthermore, the fine powder obtained by the separation of a cyclone separator is returned to the lower part of the drying chamber by the pneumatic delivery cooling and fine powder returning device so as to participate the re-granulation drying disposal. The invention reduces the middle production links, saves the production space, reduces the labour intensity, improves the granulation quality and the working efficiency, and can be widely generalized and applied in granulation industries.

Description

1. Technical field [0001] The invention relates to a production process for realizing granulation through spray drying, mixing granulation and re-drying processes, which is applied in pharmaceutical, chemical, food, pesticide and other industries. 2. Background technology [0002] At present, the granulation production process used in pharmaceutical, chemical and other industries includes three processes of spray drying, mixing granulation and re-drying in sequence, which should be carried out step by step in two sets of equipment and two different containers for spray drying and granulation drying. Drying, granulation, and re-drying, its production occupies a large space, is inconvenient to operate, has high labor intensity, and low production efficiency, which is not conducive to popularization and application. 3. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned deficiencies, and to provide a kind of one-step gran...

AI Technical Summary

Problems solved by technology

[0002] At present, the granulation production process used in the pharmaceutical, chemical and other industries includes three processes of spray drying, mixing granulation and re-drying in sequence, which should be carried out step by step in two sets of equipment and two different containers for spray drying and granulation drying. Drying, granulation, and re-drying, its production occupies a large space, is inconvenient to operate, has high labor intensity, and low production efficiency, which is not conducive to popularization and application

Images