Abstract: Batch pasteurizers are disclosed for processing milk, colostrum and other dairy products. The pasteurizers comprise inner drums to contain the processed liquid, an outer drum surrounding same and providing an annular space for retaining a heating fluid (heated by an electrical heater), a helical coil to carry cooling fluid through the heating fluid, a motorized pump or impeller to agitate the treated liquid to optimize heat transfer, and a control system to switch the heater on and off, actuate cooling liquid flow and optionally, at least partially drain the heating fluid to provide a temperature/time profile and close temperature tolerance, all of which produce pasteurized products with adequate levels of immunoglobulins to provide newborn animals with sufficient immune function.

Abstract: A portable batch pasteurizer for pasteurization or other heat treatment of contained fluids for consumption by animals or humans provides a heat transfer coil through which hot or cold fluids are pumped to heat or cool the fluid in which it is immersed. An impeller circulates the fluid in which the fluid is contained to ensure even heating or cooling.