Pasteurizer

Pasteurizer

Pasteurization is the process of heating the particles of a product to destroy pathogenic agents, pasteurizers are devices that are able to completely destroy tuberculosis bacilli by applying heat treatment to milk without having any other undesirable effect on milk. Since tubercle bacillus is the most resistant pathogenic agent of milk, the destruction of other pathogenic agents is also evaluated.
Tuberculosis bacillus is destroyed at a temperature of 72-75°C and a duration of 16-20 seconds. Apart from pathogenic microorganisms, milk contains microorganisms that have a destructive effect on the taste and shelf life of other dairy products. Therefore, the purpose of the Pasteur process is to destroy these microorganisms.
Since phosphatase enzyme is always present in raw milk and this enzyme is easily destroyed by raw milk, the absence of phosphatase enzyme in pasteurized milk confirms the correctness of the process.
The milk received from the raw milk unit first enters the balance tank. Controlling the level of hot milk inside the balance tank can be controlled both mechanically (with the help of a float) and by using pneumatic valves and relevant instruments. Pasteurizer plate as the most important part of the device consists of 3 sections , heater, regeneration and cooler.
Raw milk first enters the pasteurizer at a temperature of 4°C from the Regeneration section and is heated to a temperature of 60°C. Then, at this temperature, the milk enters the heater section and heats up to a temperature of 75-85°C while exchanging heat with hot water. The heated milk then passes through the holder to provide a residence time of 16-20 seconds to kill the microorganisms, according to the Pasteur standard, such milk is now free of undesirable microorganisms. The pasteurized milk re-enters the thermal recovery section and cools down to about 14°C while preheating its inlet milk. In the last part, by passing through the cooler part and rejecting the heat to the flow of ice water (cold water ~1°C), the milk is cooled down to 4°C.
Behnab Sazan Company is a designer and manufacturer of all kinds of pasteurizers for laboratory and industrial use with the best quality, relying on world-class knowledge and 31 years of expertise, contact us for more information and free consultation.