Plate heat exchanger pasteurizer

fruit juicefor drinking waterfor dairy products

The pasteurisation unit (HTST pasteuriser) is designed for the thermal treatment of milk and dairy products as well as other food products as soft drinks and juices. The process destroys pathogenic microorganisms by heating the product to a moderately high temperature for a brief period. The product arrives to a balance tank (BTD) and is pumped to a plate heat exchanger. It is heated to a pasteurising temperature, that depends on the type of food product and/or process requirements. Next, the product passes through the holding tube that ensures the correct pasteurisation by holding the product at the required temperature for the specified period of time. If the heat exchanger has a regeneration stage, the treated product is used to preheat the feed material, losing heat in the process, this, reducing the energy required to reach the pasteurising temperature and in reducing the cooling required. Finally, the product is cooled to 4 ºC for cold filling or storage in isothermal tanks. If, due to any problem, the pasteurising temperature is lower than the required one, an automatically operated flow divert valve sends the product back to the balance tank (BTD), thus, preventing any microbial contamination of the final product. Components of the compact unit: - Balance tank: 100 L, AISI 304. - Feeding pump: Hyginox SE centrifugal pump. - Plate heat exchanger: 1, 2 or 3 stages, upon request or depending on the process; stainless steel frame, AISI 316L staineless steel plates (0,6 mm thick); mecanically fixed NBR gaskets. - The holding tube is slightly tilted to promote the drainage of the pump.