Difference Between Spray Drying and Microwave Drying
1. The spray dryer is a relatively complex equipment, so it is also relatively large in the area it occupies, so the one-time investment will be very large
Second, whether it is an atomizer or a powder device, etc., it is relatively expensive on the whole device
Third, the amount of air that needs to be used is also relatively large, so it will increase the consumption of electric energy of the blower, as well as the utilization rate of the first device in terms of capacity
Fourth, the whole equipment is not very high in terms of thermal efficiency, so the heat consumption is also very high.
Microwave drying is a new type of drying technology, which is characterized by uniform heating of materials from the surface and inside, fast drying, short time, and has the effect of insecticide and sterilization. Microwave drying is suitable for the drying of decoction pieces, powders, water pills, honey pills and other medicines. Compared with the traditional drying method, microwave drying has the advantages of fast drying speed, uniform heating, energy saving and environmental protection. At the same time, microwave drying also has the effect of insecticide and sterilization, which can effectively improve the hygienic quality of medicines.
In terms of application, microwave drying has been widely used in the fields of medicine, food and chemical industry. For example, in the pharmaceutical industry, microwave drying can be used for the drying treatment of traditional Chinese medicine decoction pieces, Western medicine granules and other medicines. In the food industry, microwave drying can be used for the drying of foods such as instant noodles and dehydrated vegetables. In the chemical industry, microwave drying can be used for the drying of chemical products such as coatings and pigments.
In conclusion, spray drying and microwave drying are both commonly used drying methods, with their own characteristics and application fields. In practical application, the appropriate drying method should be selected according to the nature of the material and the drying requirements.