One of the key technologies for aseptic filling of PET bottle beverages is sterilization treatment, which is the key to the success or failure of aseptic filling.
Ultra high temperature instantaneous sterilization (UHT) is a sterilization process in which the heating temperature is set to 135-150 ℃, the heating time is 2-8s, and the heated product meets commercial sterile requirements. The basic principles include the principle of microbial thermal death and how to maximize the preservation of the original flavor and quality of food. Because microorganisms are much more sensitive to high temperatures than most food ingredients, ultra-high temperature short-term sterilization can effectively kill microorganisms in a short period of time and maintain the quality of food.

Basic introduction: Ultra high temperature instantaneous sterilization (UHT) is a sterilization method that heats products in a closed system to above 120 ℃, lasts for a few seconds, and then rapidly cools them to room temperature. Combining ultra-high temperature instantaneous sterilization technology with aseptic packaging technology, after ultra-high temperature instantaneous sterilization, the product can be packaged in a sterile environment to effectively control the total microbial count of the product, greatly extending the shelf life of the food. Moreover, due to the short duration of sterilization, the nutrition and flavor of the product can be maximally preserved.

principle：

Using direct steam or heat exchangers, food is heated and sterilized at 130 ℃ -150 ℃ for several seconds or tens of seconds, then rapidly cooled to prevent bacteria from surviving and growing. According to the general principle of heat induced death of microorganisms, when microorganisms are exposed to temperatures higher than their tolerance, they will inevitably suffer fatal injuries. The reason why heating promotes microbial death is due to irreversible changes in proteins caused by high temperatures. Inactivate enzymes and lose metabolism.

characteristic:
① Accurate temperature control and precise equipment;
② High temperature, extremely short sterilization time, significant sterilization effect, and minimal chemical changes caused;
③ Suitable for continuous automated production;
④ The consumption of steam and cold source is higher than that of high-temperature short-term sterilization method HTST.

Device system:

Adopt indirect heating method. The indirect heating UHT process uses steam or high-pressure water as the heating medium, and the heat is transferred to the heating sterilization material through the solid heat exchange wall. Due to the fact that the heating medium does not directly come into contact with the food, it is better to maintain the original flavor of the food material. Therefore, it is widely used in the UHT sterilization process of fruit juice, milk, etc. Indirect heating UHT has a relatively low cost and is easy to control in production.

1. Suitable product specifications: according to the samples provided by the customer

2. Sterilization temperature: 135~137 degrees Celsius, 5-15 seconds (adjustable)
3. Sterilization method: Ultra high temperature instantaneous sterilization
4. Power: Approximately 36KW/380V
5. The body material is made of 304 stainless steel, and the parts in contact with the material are made of 316 stainless steel
6. Sterilization medium: High temperature steam
7. Steam pressure: 0.5MPa


1. Rack: 304 # stainless steel, aluminum profile.
2. Machine legs: 201 # stainless steel.
3. Guardrail: 304 # stainless steel, small C guardrail.
4. Programmable Logic Controller (PLC): Siemens, Germany.
5. Human machine interface: Siemens 7-inch color touch screen from Germany.
6. Photoelectric sensor: LEUZE from Germany.
7. Relays and air switches: Schneider from France and Siemens from Germany.
8. Inverter: Siemens, Germany.
9. Pneumatic components: Taiwan Yadeke.
10. Exposed parts: stainless steel, anodized aluminum alloy, electroplated 45 # steel, engineering plastic parts.

Note: If there is a shortage in the market, our company will replace it with a product of the same quality