VERFAHREN UND ANLAGE ZUM TROCKNEN VON ROHBRAUNKOHLE IN EINEM WIRBELBETT-TROCKNER.

摘要

Moist, partic. fine granular material is dried in a fluidised bed, contg. heat exchange inserts through which a heating medium flows, with which the material is brought into contact. The water vapour extracted is discharged from the drier, with dust extracted from it if desired. Part of the vapour, from which dust has been separated, is returned to the drier as a fluidisation medium, while another part is compressed and passed as a heating agent through the heat exchanger, where it is condensed and passed via an automatic condenser into an expansion vessel. The steam generated is passed into the compressed vapour, and the condensate used to preheat the material.