Welcome to visit Beijing Songyuan Huaxing official website!
E-mail: sales@bjsyhx.com.cn
Product List
Breaking News
What are the advantages of a laboratory freeze dryer used in a laboratory over conventional methods?
The laboratory freeze dryer uses the physical principle to freeze the moisture in the compressed air to below the dew point, so that it can be precipitated from the air....
Analysis on the drying principle of freeze dryer
I believe everyone is familiar with freeze dryers. Such a machine that integrates freezing and drying has been favored by most experiments. The principle of freeze drying of freeze dryers is actually not complicated. Freezing and drying are divided into two processes. ...
How to properly maintain an industrial vacuum freeze dryer?
Industrial vacuum freeze dryer is composed of refrigeration system, vacuum system, heating system, electrical instrument control system. ...
What is the control system of industrial vacuum freeze dryer?
The control system of industrial vacuum freeze dryer is the command mechanism of the whole machine....
Analysis of periodic inspection and maintenance methods of pilot freeze dryer
Repair and eliminate the leakage and failure of the refrigeration system, vacuum system and heating system, and check whether the indicators of the pilot freeze dryer are in a normal state;...
Contact Us
Beijing Songyuan Huaxing
Service Line:+86-13161061291
Song Yuan:+86-13161061291
Address:C706 Changyin Building, NO.88 Yongding Road, Haidian District, Beijing, China
Email:sales@bjsyhx.com.cn
Facebook:SYHXfreezedryer
Your Location: Home >> News >> Enterprise dynamics >> Classification and selection of freeze dryers

Classification and selection of freeze dryers

Release Date: 2019/8/30 18:53:10 .
Browse: 167

Classification and selection of freeze dryers
The complete freeze dryer is a complex device that integrates functions such as fast, cool, heat drying, control, in-place cleaning and disinfection.
The freeze dryer can be classified in different ways.
According to the object, it can be divided into food freeze dryer and drug freeze dryer;
According to the processing capacity, it can be divided into large, medium and small freeze dryers;
According to the application, it can be divided into test, pilot test (product intermediate test, freeze-drying process can be used with large-scale production) and production freeze dryer.
The test freeze dryer is mainly used to explore and study the freeze-drying characteristics of new materials; to explore and determine the process parameters of the new material freeze-drying process.
Including: studying the problems that may occur during the freeze-drying process of new materials;
Study the effects of various parameters on the freeze-drying of new materials;
Explore the cooling rate and pre-freezing temperature of the pre-freezing process, the type and concentration of the protective agent, the primary and secondary drying process parameters and control methods. In the hope of reaching
It can not only obtain high quality freeze-dried products, but also reduce the time and energy consumption of the freeze-drying process.
Such freeze dryers are typically pre-frozen in other cryocontainers and a small amount can be carried out in a cold trap.
The drying chamber is a transparent bell jar with a built-in stainless steel sample rack.
The freeze dryer has a simple structure and a single control function, and is generally suitable for lyophilization of simple water-soluble samples.
Process: Pre-freezing is done outside the dry room (either external or cold trap) and then moved to the drying chamber shelf before the vacuum pump can be turned on.
Disadvantages: Separation of pre-freezing and drying. Refrigeration will no longer continue to be supplied to the sample during the drying phase, and the temperature of the material will rise significantly as the external heat is introduced. If material
Temperatures above their glass transition temperature or eutectic point temperature will cause the material to collapse or melt, which will have a large impact on the quality of the lyophilized product.
In order to solve this problem, Songyuan Huaxing has specially launched a pilot freeze dryer for small freeze dryers, which is mainly used in various medical and food research institutions for the process exploration before mass production. Generally speaking,
The process curve obtained on the pilot freeze dryer can be directly applied to the production freeze dryer, and then the process parameters are slightly adjusted according to the operation.

share to:
Songyuan Freeze Dryer logo
Address:C706 Changyin Building, NO.88 Yongding Road, Haidian District, Beijing, China
Hotline:+86-13161061291
Email:sales@bjsyhx.com.cn Facebook:SYHXfreezedryer
Fax:+86-10-58895379