Analyze the working principle and type of tunnel sterilization dryer

Meet the requirements of the aseptic production process.

The closed tunnel system consists of three parts: * part is the preheating section, the second part is the drying and disinfection section, and the third part is the cooling section. In such a small-volume injection drug antibiotic bottle production line, antibiotic glass bottles are directly contacted with powder or liquid packaging materials, the corresponding aseptic production process requires that the bottles are not dried and depyrogenated, and the sterilization dryer usually uses dry heat. Sterilization, often dry hot air parallel flow and far infrared heating two. The whole tunnel structure is divided into three parts: preheating section, high temperature sterilization section and cooling section. After disinfection, the particles of the antibiotic glass bottle reach the level 100 cleaning requirement, and the bacterial endotoxin drops by 3 log units, and the microorganism cannot be detected.

Second, the type of tunnel sterilization dryer

Tunnel type sterilization dryer, also known as tunnel oven, is mainly used for sterilization, drying and removal of pyrogens. There are two methods for general tunnel heating sterilization. One is hot air circulation and the other is far infrared radiation. What they have in common is dry heat sterilization.

1. Hot air circulation tunnel type sterilization dryer features:

a, uniform temperature distribution;

b, easy to control temperature and hot air pressure difference;

c. The length of the whole box is shorter than the infrared radiation type.

2. The far infrared radiation type tunnel sterilization dryer is a domestic product, and its characteristics:

a. During sterilization and drying, hot air is caused by hot air and hot air, and the heat penetration is strong.

b. The cost of spare parts is relatively low.

3. Comparison of two tunnel type sterilization dryers

Both types of tunnel-type sterilizing and drying ovens have their own characteristics. Before 2000, the drying of traditional sterilizing antibiotic bottles in China was mostly based on the traditional far-infrared radiation type, which was determined by low price and low operating cost. It is ideal for molding bottles. However, in recent years, due to the extensive use of sterile bottles for antibiotic preparations, it is characterized by uniform wall thickness, convenient control of hot air circulation, good heating uniformity, and high circulation of hot air circulation in tunnel sterilization dryers. equipment.