With the continuous development of science and technology, low-temperature spray dryer, as an efficient and environmentally friendly drying technology, has been widely used in pharmaceutical, food, chemical and other fields. This article will focus on the principle, characteristics and application of low-temperature spray dryers in various fields, in order to provide readers with a comprehensive understanding of this technology.
1. The principle and characteristics of low-temperature spray dryer.
The low-temperature spray dryer is a kind of equipment that uses the energy of air flow to atomize liquid materials into fine droplets, and carries out hot air drying in a certain drying tower. Its working principle is mainly divided into three stages: atomization stage, drying stage and product collection stage. In the atomization stage, the liquid material is atomized into droplets through a nozzle;During the drying phase, the droplets are in full contact with the hot air and the water evaporatesIn the product collection stage, the dried solid particles are collected through the dust collector to obtain the final product.
The low-temperature spray dryer has the following characteristics:
1.Low temperature drying: Drying at a lower temperature can maintain the original quality and nutrients of the material
2.High efficiency and energy saving: due to the use of atomization technology, the contact area between the material and the hot air is increased, the drying efficiency is improved, and the energy consumption is reduced
3.Environmental protection: The closed design reduces the emission of dust and exhaust gas, and reduces environmental pollution
4.Continuous production: The low-temperature spray dryer adopts the method of continuous feeding and continuous discharging to achieve the continuity of production
5.Wide range of application: It can be used for the drying of a variety of liquid materials, such as food, medicine, chemical industry, etc.
Second, the application of low-temperature spray dryer.
1.Pharmaceutical field: In the pharmaceutical field, low-temperature spray drying technology is mainly used for the preparation of micronized powders, dry suspensions, etc. Due to its characteristics of low temperature drying, it can maintain the original quality and active ingredients of drugs, so it is widely used in the production of traditional Chinese medicine and chemical drugs. At the same time, low-temperature spray drying technology can also be used to prepare new pharmaceutical preparations such as instant preparations and targeted preparations.
2.Food field: In the food field, low-temperature spray drying technology is mainly used to prepare instant tea, juice powder, condiments, etc. It is widely popular because it can maintain the original nutrients and taste of food. At the same time, low-temperature spray drying technology can also be used to prepare low-fat food, health food and other health foods.
3.Chemical field: In the chemical field, low-temperature spray drying technology is mainly used for the preparation of catalysts, pigments, ceramic materials, etc. Due to its ability to achieve efficient and environmentally friendly production, it is also being used in the chemical industry more and more widely.
III. Conclusion. As an efficient and environmentally friendly drying technology, low-temperature spray dryer has been widely used in pharmaceutical, food, chemical and other fields. It has the characteristics of low temperature drying, high efficiency and energy saving, environmental protection, and continuous production, which can meet the needs of different fields. With the continuous progress of science and technology and the expansion of application fields, low-temperature spray drying technology will have a broader development prospect.