Used 2000 liter stainless steel vacuum single cone dryer

NegotiableUpdate on 01/19

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Overview

Used 2000 liter stainless steel vacuum single cone dryer Vacuum freeze dryer is suitable for drying high-end raw materials such as pharmaceuticals, traditional Chinese medicine decoction pieces, seafood, wild vegetables, dehydrated vegetables, food, fruits, chemical drug intermediates, etc. [1] $n2. The vacuum freeze dryer combines the refrigeration system, vacuum system, heat transfer oil heating system, and dehumidification system into a new type of box structure, which greatly utilizes the storage space inside the box for freeze-drying and vacuum drying, and can make the dried powder have good dispersibility. $n Features $n $n The freezing vacuum drying process is free of impurities mixed into the object, and can maintain the original composition of the material

Product Details

　　Used 2000 liter stainless steel vacuum single cone dryer Used 2000 liter stainless steel vacuum single cone dryer

The vacuum freeze dryer is suitable for drying high-end raw materials such as pharmaceuticals, traditional Chinese medicine slices, seafood, wild vegetables, dehydrated vegetables, food, fruits, and chemical drug intermediates. [1]

2. The vacuum freeze dryer combines the refrigeration system, vacuum system, thermal oil heating system, and dehumidification system into a new type of box structure, which greatly utilizes the storage space inside the box for freeze-drying and vacuum drying, and can make the dried powder have good dispersibility.

feature

The process of freeze-drying involves the absence of impurities mixed into the object, which can maintain the original composition, active ingredients, and material form of the material without damage.

Working principle: After starting up, put the materials into the material box for freezing The freezing process of materials involves, on one hand, the vacuum system evacuating and removing a portion of the moisture; On the other hand, when the material is frozen, the moisture contained in certain molecules is discharged onto the surface of the material to freeze. After meeting the freezing requirements, the material is heated and dried by the heating system, and the moisture contained in the material is brought to the freezing capture box for freezing by vacuuming, achieving the freeze-drying requirements of the material.

Freeze drying refers to the process of removing water or other solvents from frozen biological products through sublimation. Sublimation refers to the process in which a solvent, such as water, like dry ice, changes from a solid state to a gaseous state without going through a liquid state. The product obtained from freeze-drying is called lyophilizer, and the process is called freeze-drying. Traditional drying can cause material shrinkage and damage cells. The structure of the sample will not be damaged during the freeze-drying process, as the solid components are supported by the solid ice in their positions. When ice sublimates, it leaves pores in the remaining dry material. This preserves the integrity of the biological and chemical structure and activity of the product. In the laboratory, freeze-drying has many different uses, including in many biochemical and pharmaceutical applications. It is used to obtain biomaterials that can be preserved for a long period of time, such as microbial culture, enzymes, blood, and drugs. In addition to the stability of long-term preservation, it also retains its inherent biological activity and structure. For this purpose, freeze-drying is used to prepare tissue samples for structural studies (such as electron microscopy). Freeze drying is also used in chemical analysis, which can obtain dried samples or concentrate samples to increase analysis sensitivity. Freeze drying stabilizes the composition of the sample without changing its chemical composition, making it an ideal analytical aid

Assistant section. Freeze drying can occur naturally. Under natural circumstances, this process is slow and unpredictable. Through freeze-drying systems, people have improved and subdivided many steps, accelerating this process. classification

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Structurally divided

Bell shaped freeze-drying machine: The freeze-drying chamber and cold trap are separate upper and lower structures, and the freeze-drying chamber does not have pre freezing function. This type of freeze-drying machine requires manual operation when entering the drying process after the pre freezing of the material is completed. Most experimental freeze-drying machines are bell jar type, which has a simple structure and low cost. Most freeze-drying chambers use transparent organic glass covers for easy observation of the freeze-drying process of materials. [2]

In situ freeze dryer: The freeze drying chamber and the cold trap are two independent chambers, and the shelf in the freeze drying chamber has a refrigeration function. After the material is placed in the freeze drying chamber, the pre freezing and drying process of the material does not require manual operation. The production process of this type of freeze-drying machine is complex and the manufacturing cost is high. However, the in-situ freeze-drying machine is the development direction of freeze-drying machines and an ideal choice for exploring freeze-drying processes. It is particularly suitable for freeze-drying pharmaceuticals, biological products, and other special products.

a、 Ordinary type b, multi manifold type c, pressure cover type

Functionally divided

Ordinary shelf type: materials are loose in material trays, suitable for freeze-drying of food, Chinese herbal medicine, and powder materials.

Type with capping device: suitable for drying penicillin bottled materials. When preparing for freeze-drying, the materials are divided into penicillin bottles as needed, and the bottle cap is covered before freeze-drying. After drying, the capping mechanism is operated to press the bottle cap tightly, which can avoid secondary pollution and re adsorption of moisture, and is easy to store for a long time.

Multi manifold type: A flask is attached to the outside of the drying chamber to dry the material frozen on the inner wall of the flask. At this time, the flask is connected to the manifold outside the drying oven as a container. The material in the flask is heated at room temperature and can be removed or added to the flask as needed through a multi manifold switch device without stopping the machine.

Pre freezing function type: During the material pre freezing process, the cold trap serves as a pre freezing chamber to pre freeze the material. During the drying process, the cold trap acts as a water trap to capture the water overflowing from the material. The freeze-drying machine with pre freezing function completes the pre freezing and drying of materials during the freeze-drying process. The freeze-drying machine has high efficiency and saves the cost of low-temperature refrigerators.

Select parameters

freeze-dried area

The number in the freeze-drying machine model represents the freeze-drying area of the model, for example, the freeze-drying area of the LGJ-18C freeze-drying machine is 0.18 square meters. Users should determine the required freeze-drying area based on their own needs through calculation. For example, if each batch of products requires a liquid volume of 1.8 kilograms (liters) to be freeze-dried, and materials are loaded onto material trays with a thickness of 10mm per tray, the load area of the freeze-drying plate layer can be calculated

A (area, ㎡)=V (volume, m)/H (height, m)=0.0018m/0.01m=0.18 ㎡

It is necessary to choose a freeze dryer with a load area of 0.18 square meters for the board layer.

Cold trap temperature