Sell used 7.5-square-meter freeze-dryer

; idle used 7.5 square meters Shanghai Pudong vacuum freeze dryer. The second-hand vacuum freeze dryer is suitable for the drying of high-grade raw materials, Chinese herbal pieces, biological, wild vegetables, dehydrated vegetables, food, fruit, chemical, pharmaceutical intermediates and other materials. This equipment can combine the refrigeration system, vacuum system, heat transfer oil heating system and moisture removal system into one. A new type of box structure is introduced, which can greatly utilize the storage space in the box for freeze vacuum drying. Classification of vacuum freeze dryer 1. Characteristics of vacuum freeze dryer 1. Freeze vacuum drying process is no impurity mixed with objects, which can keep the original ingredients and active ingredients of materials and material form not damaged. 2. It is manufactured by vacuum freeze-drying principle, compact and reasonable structure, convenient maintenance, low cost, automatic control and easy operation. 3. It has comprehensive functions and can work independently without supporting facilities (steam boiler, cooling tower, etc.). 4. Unique design and low energy consumption. Freeze drying of low price materials is profitable. The working principle of the vacuum freeze dryer is that the material is put into the material box for freezing after it is started up. On the one hand, the vacuum system vacuumizes some water to take away part of the water; on the other hand, when the material is frozen, the water contained in some molecules is discharged to the surface of the material for freezing. After the freezing requirements are met, the material is heated and dried by the heating system, [1] freeze drying refers to the process of removing water or other solvents from frozen biological products by sublimation. Sublimation refers to the process in which a solvent, such as water, changes directly from a solid state to a gaseous state without going through a liquid state, like dry ice. The product obtained by freeze-drying is called lyophilizer, and the process is called lyophilization.