High and low-temperature spray dryer technology has been developed for more than one hundred years. In 1872, American Samuel Percy applied for a special issue on spray drying technology. In 1888, spray drying was commercially applied to dry milk powder and glucose. Since spray dryer has the characteristics of instantaneous drying, good drying product quality, and simple drying process, to the thirties of the 20th century, the technology has been widely used in dairy products, detergent, dehydrated food and fertilizer, dyestuff, cement production, the current common instant coffee, milk powder, convenient food such as soup is spray drying product.
Spray drying has a short history in China, as early as in the 1950s and 1960s, the former Soviet union spray dryer was introduced for the drying of dyes and streptomycin. Currently, spray dryer has been widely used in all the above-mentioned industries, especially in the ceramic and pharmaceutical industries, and the application of spray drying equipment is more common. For traditional Chinese medicine pharmaceutical industry, the application of spray drying technology has its unique function, simplify and shorten the traditional Chinese medicine extract to the semi-finished products and the technology of preparation time, improves the production efficiency and product quality.
In this paper, the study of spray drying technology was reviewed, its application prospect in the field of traditional Chinese medicine preparation is analyzed. For the popularization and application of the technology and provide reference and help improve the level of TCM pharmacy.
Research progress of spray drying technology the core of laboratory spray dryer spray drying technology is fluidization technology, which has the outstanding advantage of instantaneous drying from fluid to solid. The equipment is generally composed of atomizer (nozzle), drying chamber, inlet, and outlet gas and material collection and recovery system.1.1 atomizer with different atomization forms can produce different atomization forms.
According to different atomization forms, spray drying can be divided into airflow atomization, pressure atomization, and centrifugal atomization. The air-flow atomization uses the compressed air (or steam) to shoot out from the nozzle at high speed and mix with the material liquid transported by another channel. The material liquid is dispersed into fog droplets by the friction force caused by the different relative speeds of air (or steam) and the material liquid.
According to the number and layout of the flow channels of the nozzles, the air-flow atomizer can be divided into two types: in vitro mixing type, in vivo mixing type, in vivo mixing type, in vivo mixing type, in and out mixing type, in vitro mixing type, in and out mixing type and so on. The airflow atomizer is simple in structure and has a wide range of processing objects.
Hawach has ten years of history in the spray dryer, we put much effort to study the technology and application in this field, and now we are a leading supplier. I hope all clients could choose the proper spray dryer they need.
Now spray dryer could be used in many fields, such as the Chemical industry, food industry, food and plant, pharmaceutical industry, ceramics. For details, you can contact our sales.