PROCESS FOR CRYOGENIC COOLING OF POWDERS USING ANTICIPATED CONTROL STRATEGY

摘要

A method for cooling a powder, in a tunnel provided with a vibrating support, as well as at least two independently controllable arrivals of cryogenic liquid in the tunnel, and comprising the following steps: - determining the thermal mass of powder entering the equipment - the detection of the arrival of powder at the tunnel entrance is carried out - the measurement of the thermal mass obtained previously is synchronized with the detection of the arrival of powder at the tunnel entrance according to a known or pre-determined response time of the means for controlling said arrivals of cryogenic liquid in the tunnel; - this synchronization information is transmitted to an acquisition and information processing unit, which is capable of to feedback, if necessary on the basis of this information, on all or part of the parameters governing the operation of the tunnel. Application to cooling or freezing processes ion of food or chemical products.