Milk is a well-known drink, but in the process of dairy production, such a process is inseparable - pasteurization, as the name suggests, pasteurization is a process for the purpose of killing bacteria in milk. The milk is quickly heated to a high temperature state, and then rapidly cooled to a low temperature state, and the bacteria in the milk are killed through the sharp temperature change. But do you know the equipment for pasteurization? This is the
Plate Heat Exchanger for milk.
The plate heat exchanger for milk is generally a three-stage type, which is a preheating section, a heating section, and a cooling section. The preheating section not only exchanges heat between the cold milk that is passed into the heat exchanger and the hot milk that is about to be rapidly cooled in the heat exchanger, it cools down the hot milk and preheats the cold milk at the same time. This process is called preheating. The preheating section is the heat transfer between milk and milk, which can save energy and protect the environment. This design scheme also helps to reduce the number of plate heat exchangers, so as to achieve the purpose of saving economic benefits.
The heating section is to exchange heat between the milk that has passed the preheating section and hot water or saturated steam, and heat the milk to 95°C, so as to achieve the purpose of sterilization. The cooling section uses ethylene glycol solution to quickly cool the hot milk to 0-5 degrees Celsius.
The pasteurization method can not only effectively remove the bacteria in the milk but also ensure the flavor of the milk without damaging the taste of the milk. The most important thing is that the temperature in the pasteurization changes drastically, and the three-stage heat exchange should be short. It can be completed within a short time, that is, it needs to be designed in a heat exchanger during design. If heat exchange is difficult for a certain section of the three-section heat exchanger, in order to reduce the number of pieces, it is necessary to design a double flow or three flow.
Compared with most plate heat exchangers, the plate heat exchanger for milk has a complex structure. Three kinds of media need to flow through a heat exchanger, and after three or more heat exchange sections, milk will also produce deposits after heating. In the case of a complex heat exchange section, it is very easy to cause blockage, and according to the requirements of the Food Safety Law, the whole must be made of stainless steel, the cost is relatively expensive, and the process is relatively complicated. There may be such a manufacturer that produces pasteurized The heat exchangers for pasteurization produced by using milk heat exchangers are sold at home and abroad, sold well in Europe and the United States, and have won unanimous praise from a wide range of users. putt.
Based on a wide variety of versions, we can adapt to the needs of various complex working conditions. We also have a group of design teams with rich experience to solve various problems for customers efficiently and professionally rich experience.
March 21, 2023
