Automatic control of the drying of particulate material

摘要

A method and apparatus for drying particulate material in which the drying and discharge of the particulate material may be superimposed in such a way as to permit continuous drying of particulate material even when the supply is not continuous. The quantity of heat supplied to the particulate material is controlled as a function of signals (_i; h_i) from temperature sensors mounted in the particulate material, which signals represent temperatures detected locally, and also as a function of a preselectable residence time (T_v) of the particulate material at a temperature within a preselectable target temperature range (_min, _max) and a preselectable throughput of dried particulate material such that the particulate material discharged has a temperature within the target temperature range (_min, _max) at least during the residence time (T_v).