Plate pasteurizer also called flash pasteurizer or HTST pasteurizer, it is continuous pasteurization equipment specially designed for low-viscosity fruit juice (Apple juice or orange juice), dairy products, milk, syrup, liquid egg products, beverages, juices, wines or similar liquid materials. It is ideal equipment for sterilizing and cooling materials to extend the shelf life. This set of pasteurization equipment can be designed for different process requirements such as sterilization/pasteurization, heat preservation, cooling, etc.

Dairy Industry: It is widely used in the dairy industry to heat-treat milk, cream, and other dairy products. This helps kill harmful bacteria, extend shelf life, and maintain the flavor and texture of the products.

Beverage Industry: Many beverages, such as fruit juices, tea, and some alcoholic beverages, require pasteurization to ensure safety and quality. Plate pasteurizers can be used for the heat treatment of these beverages, allowing manufacturers to meet regulatory requirements and consumer expectations for product safety.

Brewing Industry: In the brewing industry, plate pasteurizers are used to pasteurize beer and other alcoholic beverages to stabilize the product, extend its shelf life, and maintain its flavor profile.

The plate type pasteurizer is mainly composed of plate heat section, heat holding(Sterilizing) section, cooling section, and material reflux section, material balance tank&material pump, CIP pump, hot water tank&hot water pump, steam valves group, electronic control cabinet and pipes, pumps and valves system.

Hot water system: The system consists of the mini plate heat exchanger, steam regulating valve, steam shut-off valve, steam trap, hot water pump and hot water tank. After the water is heated by steam, the hot water is supplied as a heating medium to the heating section of the plate pasteurizer to heat the material to achieve the purpose of sterilization. The medium hot water circulates through the hot water pump in the heating section between the heater and the sterilizer.

Plate heat exchanger: The material plate heat exchanger is the core component of the plate sterilizer. According to different materials, the plate heat exchanger can be designed to be W-shaped, vertical or horizontal type to meet the heat treatment of materials with different viscosities. The plate heat exchanger system consists of a preheating section, a temperature holding section, a cooling section and a heat recovery section. When processing pasteurized milk, the heat recovery can be as high as 90% or more.

Material feeding system: It is mainly composed of a material balance tank, feeding pump, feeding pipeline and valve parts. The material tank is made of SUS304 material, equipped with a liquid level gauge, CIP cleaning ball, material inlet and outlet, etc. The feeding pump is usually equipped with a centrifugal pump or a rotary pump according to the viscosity of the material, and its function is to transport the material in the balance tank to the plate heat exchanger for heat treatment.

Control system: including material heating temperature control, feed tank liquid level control, feed flow control, steam pressure and pH value control. The devices used to monitor and control these parameters are various types of sensors, flow meters and controllers. Through the flow meter, the signal of the sensor is fed back to the controller, so as to realize the coordination of various parameters of the material and complete the process of pasteurization.

Pipelines and valves: The pipelines mainly include material feeding pipelines, hot water pipelines, steam pipelines, cold water pipelines or ice water pipelines, CIP pipelines, etc. Pressure gauges, thermometers, etc.

The material in the balance tank is transported to the preheating section of the plate sterilizer through the feed pump. At this time, the hot water heated by steam is transported to the preheating section of the plate heat exchanger through the hot water pump, The hot water exchanges heat with the material to heat the material to pasteurization temperature (if the material is pasteurized skim milk, after the milk is preheated to 50-55 ℃, the fat in the milk is removed by the milk separator, and then heated to the pasteurization temperature; if the material is fruit juice, nectar, puree, the material also needs to be heated to about 55 ℃ first, after entering the homogenizer to homogenize and then heated to the sterilization temperature in the heating section), and then the material enters the temperature holding tube, and maintains a certain time according to the material sterilization process. And then material flows to the cooling section to cool down to the required filling temperature (depending on the filling temperature, the cooling section may need to be equipped with a cooling water tower or chiller water machine to cool the material), and finally the sterilized material is stored in the buffer tank for filling.

According to different materials and client customized requirements, the sterilizing technological process can be divided into three types:

1. LTLT Pasteurizer Process:30-50℃ material inlet—-63- 65℃ for 30 minutes—5℃ outlet for cold filling.

2. HTST Pasteurizer Process:30-50℃ material inlet—-75- 95℃ for 15-20 seconds—5℃/85℃ outlet for cold filling/hot filling

3. UHT Sterilizer Process:30-50℃ material inlet—-125-135℃ for 4-6 seconds—35-40℃ outlet for cold filling/hot filling

1. Materials and heating media are heated in their own sealed systems through non-contact heat exchanger to ensure material hygiene and safety.
2. The sterilization time is short, which can ensure that the nutritional ingredients of the material are not damaged.
3. The whole machine is made of food-grade stainless steel to ensure that it meets the national safety and health requirements for beverage and food equipment.
4. High-performance heat transfer effect, high heat recovery rate and low energy consumption.
5. The main control components, valves and parts are all imported parts, PLC is SIEMENS brand, electronic parts are use SCHNEIDER brand, steam valve group use Spirax Sacro brand, and Pneumatic valves use Alfa Laval brand.
6. PLC control can be used to automatically control the heating temperature, hot water temperature and steam flow adjustment of each section of the material, and an automatic material return system is provided to ensure that the material reaches 100% sterilization effect
7. Simple structure, easy to clean, convenient operation, low maintenance cost.
8. The plate-type pasteurizer is suitable for processing low viscosity dilution fruit juice and it is usually connected with hot filling machine.
9. It is easy to clean, the machine is equipped with CIP function, which can clean the machine and pipes automatically.
10. The whole machine needs auxiliary equipment such as boiler, cooling tower, chiller, air compressor to supply steam, cooling water, chill water and compressed air.