METHOD FOR MONITORING AND/OR CONTROLLING AND REGULATING A GRANULATION, AGGLOMERATION, INSTANTIZATION, COATING AND DRYING PROCESS IN A FLUIDIZED LAYER OR A FLUIDIZED BED BY DETERMINING PRODUCT MOISTURE, AND DEVICE FOR CARRYING OUT SAID METHOD

摘要

The invention relates to a method and a device for monitoring and/or controlling and regulating a granulation, agglomeration, instantization, coating and drying process in a fluidized layer or a fluidized bed by determining product moisture. According to the inventive method, total product moisture is measured substantially and constantly in the seconds range, without contact, by electromagnetic radiation in the high frequency or microwave range, during at least one stage of the process. Vaporization is evaluated as a measure of total product moisture. Taking into account product temperature, the measuring result is used to maintain total product moisture within a pre-determinable range by altering the spray rate and/or the gas temperature and/or the volume flow, via a regulating circuit.