kl+spray+drying

From the video "high speed centrifugal spray dryer", we can know the process of spray drying clearly. in this process, the liquid is spray in a very high speed and temperature in the drying tower before it is atomized in very fined base. when the liquid is contact with the hot air, it will dry very fast.

in the atomizing process, the fast drying speed help the surface area increased when the liquid is atomized and liquid should be evaporate instantly in the hot air. this spray drying process is usually finished very fast. it is applicable for drying heat material too as the temperature is very high in beginning and it drops down very fast. the common application of spray drying are fruit juice and drying milk.

this spray drying process is quite simple and is applicable to liquid with mixture content from 40% to 80%. in the food industry, spray drying process is common and important.