The three basic steps of milk processing are:
Flow Diagram of Milk Processing
The process is as follows. 1st the milk enters into the 1st regeneration in chilled condition. It is here that the heating starts by absorbing heat from the outgoing hot milk. The heat absorption takes place in plate heat exchangers. The milk is heated to a temperature of 20oC. It then passes through the clarifier. After clarification, it returns and enters into the 2nd generation where the milk is heated to a temperature of 55-60oC. Then this milk passes to the homogenizer. The homogenized milk returns back and is heated finally to 80oC. The temperature of the milk is held at 80oC for 15 seconds. Then this milk passes through the two regeneration steps again losing heat to the incoming milk in PHE(plate heat exchanger) and is finally chilled to 4oC by the chilled water from the refrigeration section.