Milk Processing Plant need to pay attention to this link: heat-treated milk must be heat treated in some way to kill all pathogenic microorganisms, the temperature is kept at 72 ° C, and the time within 15 s must be guaranteed. The pure milk production line records the heating temperature and must be automatically recorded, and the recording card should be retained for the specified time.
Purification before heat treatment Because milk usually contains solid substances such as dirty particles, white blood cells and somatic cells, milk must be purified. Because if the bacteria are agglomerated or hidden in the milk granules, the bacteriostatic effect will be worse, so be sure to clean them before heat treatment. The milk can be purified in a filter or centrifugal purifier, the latter being more effective.
The emulsion tank is a triaxial stirrer for stable homogeneous emulsification and produces very small particles. The quality of the emulsification depends on how the particles are dispersed during the preparation stage. The smaller the particles, the more likely they are to accumulate on the surface and the weaker they are, so they are less likely to be destroyed by emulsification. By means of reversed blade mixing, high quality emulsion mixing results are obtained under uniform turbine and vacuum conditions.
The milk production line prevents recontamination and the heat exchanger must be calculated to maintain the pressure on the pasteurized milk fluid side above the fluid pressure of the non-pasteurized milk and working medium. If the heat exchanger leaks, the pasteurized milk must flow into the non-pasteurized milk or into the cooling medium, ie the small milk production line, rather than flowing in the opposite direction. For safety reasons, booster pumps are often required, and in some countries this is the order that must be followed. If the temperature of the pasteurized product is lowered due to the temporary lack of heating medium, a steering valve must be provided on the device so that unheated milk can be returned to the tank.
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