In a modern UHT plant (Ultra High Temperature) the milk is pumped through a closed system. On the way it is preheated, highly heat treated, homogenized, ultra highly heat treated, cooled and packed aseptically. Low acid (pH above 4.5 - for milk more than pH 6.5) liquid products are usually treated at 135 - 150C for a few seconds holding, by either indirect heating or direct steam injection or infusion. High acid (pH below 4.5) products such as juice are normally heated at 90 - 95C for 15 - 30 seconds holding. All parts of the system downstream of the actual highly heating section are of aseptic design to eliminate the risk of reinfection, include aseptic packaging in packages protecting the product against light and atmospheric oxygen. Ambient storage is normal.
The Whole line including:
1.Water Treatment section
2.Milk Receiving or powder dissolving Section
3.Preparation Section
4.UHT Sterilization Section
5.Filling & Packaging Section
6.CIP Cleaning Section
7.Chiller
8.Compressor
9. Steam Boiler
10. Installation Material
Milk receiving system, milk silo tanks.