Cleaning Procedures and Precautions for UHT Instantaneous Sterilization Machines
Tube sterilizers are mainly used for aseptic production of products such as juice, milk, ice cream, and jam, allowing the products to maintain their quality and freshness for a long time. Tube sterilizers are not only suitable for general products, but can also be adjusted according to the user's special needs, such as for products that need to be produced with particles, products with large fibrous particles, or products with medium to high viscosity. Therefore, they are more widely applicable than ordinary sterilizers. Tube sterilizers can sterilize products that are corrosive to dead corners at high temperatures of 120~140°C and ultra-high temperatures.
Cleaning procedures and precautions for ultra-high temperature instantaneous sterilizers:
(1) CIP washing procedure
A. Water washing: When the material is about to be finished, wash with water to remove residual material and facilitate the next step of clean water washing. Stop water washing when the water coming out of the equipment becomes clear.
B. Alkali washing: Prepare a 2% concentration alkaline washing solution with caustic soda (NaOH), heat it to 80°C, and circulate it for about 30 minutes. Alkali can dissolve proteins and milk fats, causing scale to foam and loosen. If the scale is severe, the solution concentration can be appropriately increased.
C. Water Wash: After draining the alkali solution for about 15 minutes, rinse with water.
D. Acid Wash: Prepare a 2% concentration acid detergent using nitric acid (HNO3), heat to 80℃, and circulate for about 30 minutes.
E. Water Wash: After draining the acid solution, rinse with water for about 15 minutes to prevent the material from being contaminated by residual acid during the reprocessing process. After cleaning, fill the container with clean water for the next operation.
(2) Washing Precautions:
A. Do not use chlorine to prepare the cleaning agent during the cleaning process.
B. The chlorine content of the clean water should be less than 50mg/L. In areas with poor water quality, the water must be purified before cleaning.
Conclusion: Through the introduction in this article, we believe that every reader has gained a very deep understanding of the cleaning procedures and precautions for ultra-high temperature sterilizers. The above precautions are all very important knowledge points.