Abstract: The over-pasteurization of a product in a tunnel pasteurizer can result when the normal movement of the product through the pasteurizer is delayed. Over-pasteurization is prevented by cooling the product in the pasteurizing zone to reduce its temperature to a temperature at which no appreciable pasteurization occurs. The temperature of the product may be returned to pasteurizing temperatures when the delay no longer exists. An improved tunnel pasteurizer is described for preventing over-pasteurization by spraying the product with cool water to reduce its temperature. The preferred pasteurizer also includes an automatic level control system for the regenerative paired zones, an external water tank to recover and reuse energy and water usually wasted and a closed cooling system which provides for cooling of the pasteurizer water without the risk of cross-contamination of the cooling source and the pasteurizer.

Abstract: The over-pasteurization of a product in a tunnel pasteurizer can result when the normal movement of the product through the pasteurizer is delayed. Over-pasteurization is prevented by cooling the product in the pasteurizing zone to reduce its temperature to a temperature at which no appreciable pasteurization occurs. The temperature of the product may be returned to pasteurizing temperatures when the delay no longer exists. An improved tunnel pasteurizer is described for preventing over-pasteurization of spraying the product with cool water to reduce its temperature. The preferred pasteurizer also includes an automatic level control system for the regenerative paired zones, an external water tank to recover and reuse energy and water usually wasted and a closed cooling system which provides for cooling of the pasteurizer water without the risk of cross-contamination of the cooling source and the pasteurizer.

Abstract: An inertial conveyor has at least one transporting surface or section slidably arranged on rails with the rear end of the section sliding over an immovable rest, shifting means, preferably an adjustable spring, which permits the section to shift toward the rest and drive means for delivering lateral driving impulses of acceleration in one direction with an acceleration which is more than the acceleration of the friction force of any material on the surface to the section. The shifting means in between the driving impulses delivering lateral movement to the section in the opposite direction with less acceleration than that of material thus causing a non-harmonic movement so that the friction force will be overcome and material on the surface will move toward the immovable rest. In a preferred embodiment the inertial conveyor includes a plurality of sections and is part of a grate stoker.