METHOD AND DEVICE FOR DRYING OF PASTE-LIKE MATERIALS, NAMELY MUD DEPOSITS OF WASTE WATER CLEANING STATIONS WITH GENERATION OF HEAT ENERGY

摘要

FIELD: heating, drying.;SUBSTANCE: invention refers to drying equipment. A drying method of paste-like materials, namely mud deposits of waste water cleaning stations involves two drying stages, in which the first drying stage is implemented by the first drying device (1) of an indirect type, fed with fluid medium being a heat carrier; this first stage ensures pre-dried mud deposits and water vapour obtained at outlet (1a, 1b); a formation stage of mud deposits at the outlet of the above said first drying device; the second drying stage implemented by the second drying device (7) for already pre-dried mud deposits, which are subject to heating by means of heating gas, namely hot air; with that, the same second drying stage ensures finally dried mud deposits obtained at outlet (7b). With that, pre-dried mud deposits supplied from the first drying device (1) are added to extruder (6) for mud deposits, which can shape cords from these mud deposits or the like shapes that enter the second drying device (7); dried mud deposits supplied from the second drying device (7) are subject to mechanical action (19) to provide them with a granular shape, and at least some part of the obtained granules is subject to combustion (23) to generate heat energy and at least some part of such energy is used for heating of fluid medium being the heat carrier in the first drying device.;EFFECT: invention shall ensure energy consumption reduction.;11 cl, 1 dwg