Tube sterilizer is an indirect heating sterilization equipment, which is one of the applications of tube heat exchangers in the food industry There are two types of tube sterilizers: vertical and horizontal. Horizontal sterilizers are commonly used in the food industry.

Structure of tube sterilizer

The basic structure is: stainless steel heating tubes are installed inside the shell to form a heating tube bundle, and the shell is connected to the heating tubes through a tube plate.

Working principle and characteristics: The material is heated to 138-150 ℃ through a sleeve heat exchanger in a continuous flow state, and maintained at this temperature for a certain period of time (2-4 seconds) to achieve commercial sterility level. Then, it is filled in a sterile packaging container in a sterile environment under sterile conditions. The entire sterilization process is completed instantly at high temperatures, killing microorganisms and spores that can cause material spoilage and deterioration, while greatly preserving the original flavor, aroma, and nutritional components of the food. This strict processing technology and precise equipment processing method effectively prevent secondary contamination of food and greatly extend the shelf life of products. The UHT process preferably adopts a straight tube heat exchanger sterilization system, which has reliable working performance under high steam pressure and ultra-high temperature conditions, especially with a continuous working time of more than ten hours, thus gaining a wider range of applications than plate sterilization systems. Advantages of sterile corrugated tube sterilizer: 1. The viscosity range of the product is large, and the pH value of the operating environment is 1-14. It is suitable for the aseptic production of fresh milk, pasteurized milk, yogurt, colored milk, juice, tea drinks, wine, ice cream, soy milk, dairy drinks, longevity milk, jam, soy sauce products and other products. After being treated by the UHT sterilization system, the quality or freshness of the product can be maintained at room temperature for 3-6 months (without adding any preservatives) under aseptic packaging, without the need for refrigeration chain; 2. Fully automatic or semi-automatic computer control of equipment, operated by touch LCD screen; 3. Instant processing to maintain the original flavor of the product; 4. PID temperature control system, sterilization temperature is continuously recorded in real-time on the recorder; 5. The product undergoes uniform heat treatment, with a heat recovery rate of up to 90%; 6. There are no contact points or hygiene blind spots inside the pipe, and the product will not adhere to the pipe. In addition, the corrugated pipe forms high turbulence during the sterilization process and has a self-cleaning effect during material flow, making it less prone to scaling and pollution inside the pipe; 7. Longer continuous operation time and better CIP self-cleaning effect; 8. Fewer spare parts and lower operating costs,; 9. Easy to install, inspect and disassemble, and convenient for pipeline maintenance; 10. The material is reliable and can withstand high product pressure. Scope of application for sterile corrugated tube heat exchangers: 1. Food and beverage products with high viscosity or heat sensitivity; 2. Products containing large fiber and fruit pulp particles; 3. Products with high acidity and corrosive properties to dead corners; 4. Low acid, sterile and granulated products: milk, yogurt, cream, cheese, egg liquid, chocolate, syrup, ice cream, fruit juice, fruit juice containing granulated juice, jam, jelly, tomato sauce soybean milk, salad sauce, paste food, fat and grease, malt juice, beer, wine, rice wine, tea juice, coffee drinks, etc