Dry tea There are two ways to dry instant tea, one is spray drying and the other is freeze drying. Before the spray drying, carbon dioxide is injected into the deep tea broth to make the tea juice filled with tiny air sludge. When the spray is synergistic and dry, the carbon dioxide gasification goes out and the tea powder forms a small particle in the middle, which increases the instant solubility. . If adding tea with sugar and fruit juice, boiling dry method or freeze-drying method may also be adopted. The product is like malted milk. Freeze-drying reduces the temperature of tea juice to tens of degrees below zero and then warms it up. At the same time, it decompresses helium to remove water that is difficult to sublimate. Freeze-dried instant tea has a loose texture and is particularly soluble. The solution will do. News link: Spray drying is a method of systematic application of material drying. After the thin material is atomized in the drying chamber, the moisture rapidly vaporizes in contact with the hot air to obtain a dry product. The method can directly dry the solution and the emulsion into a powdery or granular product, and evaporation and crushing can be omitted. Freeze drying is also called sublimation drying. A method of drying in which the aqueous material is frozen below the freezing point, the water is converted to ice, and then the ice is removed to steam in a higher vacuum to remove it. The material can be frozen in a freezer before drying. However, it can be directly frozen in the drying chamber and quickly frozen. The vapor generated by sublimation is removed by a condenser. The vaporization heat required during the sublimation process is generally supplied with heat radiation. Thin Film,Thin Film Materials,Polymer Thin Films,Packaging Film shaoxing xiangyu green packing co.,ltd. , https://www.xiangyubasefilm.com
