Gea Tds Offers Four Process Engineering Variants For Esl Treatment Processes: Direct Heating, Indirect Heating, Microfiltration And Deep-bed Filtration

摘要

The starting product for the ESL direct heating plant is standardized and heat-treated milk or just milk with a standardized fat content buffered in a storage tank. In the ESL direct heating plant, the product is first regeneratively preheated to 70℃ - 85℃ and then heated to max. 127℃ by direct steam injection. The milk is held at this temperature for approx. 3 seconds and is then cooled down to 70℃ - 85℃ in a flash cooler. To ensure the product is well stabilized, aseptic homogenization is carried out at a temperature of approx. 70℃ As a result of these extremely short heating and cooling times at a high heating temperature, the direct process offers the advantage of top product quality. Taste tests have shown that from an organoleptic point of view the product is virtually comparable with conventionally pasteurized fresh milk.rnMilk can be supplied to the filling line as finished milk via modified sterile tanks or via high-hygienic milk tanks designed especially for ESL milk. The storage temperature in the tanks should never exceed 5℃.rnFor the "ESL indirect heating plant" process a similar intermediate storage approach is required.