One-step Chinese medicine spray-drying and granulating process and equipment

Abstract

The invention relates to one-step spray, drying and pelleting process and apparatus for traditional Chinese medicine, The invention adopt circulated nitrogen as heating medium, while assistant material powder entered into drying tower(13) from upper part. One path of nitrogen gas in circulated gas water-division jar is heated and dehydrated and enters into drying tower from bottom, and heat, dry assistant material powder to granule and form boiling layer. Preheated medicine liquor is pressed in the top nozzle of drying tower by the other path of nitrogen gas, the other third nitrogen gas is introduced to nozzle after pressurization. Medical liquor is sprayed in drying tower. During stirring and drying, granula of boiling layer gradually grow up and increase and come out from drying tower. Nitrogen tail gas return to circulated gas water-division jar after treatment for new cycle. The invention integrate the multiple steps in traditional Chinese medicine manufacture into one step, can effectively prevent effective ingredient oxidation and microorganism growth, assure the quality and sanitation of prepared medicine.

Description

technical field [0001] The invention relates to a traditional Chinese medicine one-step spray drying granulation process and equipment. Background technique [0002] In the production process of traditional Chinese medicine, there are many process steps in the extraction part. Generally, it is firstly concentrated by multi-effect vacuum, then secondly concentrated by a sandwich pot, and the third step is mixed with auxiliary materials, then granulated, and finally dried in an oven. products. The whole production process uses a lot of equipment, exposes to the air and transfers more times, has low work efficiency, and consumes a lot of energy. Especially the concentration stage takes a long time, and it is difficult to meet the hygienic standard. [0003] At present, most domestic dryers are only used for drying granules. Pure spray dryers are used to directly dry dilute liquid medicine into dry powder. The thermal efficiency is low, and small tower diameters are prone to wa...

AI Technical Summary

Problems solved by technology

The entire production process uses a lot of equipment, exposure to the air and transfer times, low work efficiency, high energy consumption, especially the long time of concentration stage, it is difficult to meet the hygienic standard

[0003] At present, most domestic dryers are only used for drying granules. Pure spray dryers are used to directly dry dilute liquid medicine into dry powder. The thermal efficiency is low, and small tower diameters are prone to wall sticking, especially for the production of traditional Chinese medicine. more serious

Moreover, hot air is generally used as the drying medium, so that many effective components in traditional Chinese medicine are prone to oxidation when they encounter oxygen at high temperature, and some components are less effective or even harmful due to excessive temperature, which makes the quality requirements of Chinese medicine processing unsatisfactory. to guarantee

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