DRUM DRYER DEVICE AND ITS OPERATING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a drum dryer device capable of operating in a stable condition over a long time with largely improved working efficiency and its operating method. SOLUTION: In a drum dryer device 1, a cylindrical drum 3 inside which heating steam S is supplied can be rotated and driven by a driving motor M1 by rotatably journaling a rotation shaft 4 arranged along a tuber axis to accommodate it is a housing 2, and the drum 3 is soaked in a liquid to be treated Z stored in a pan 9 arranged at the lower part of the housing 2. Then, it is allowed to adhere to a drum wall to be dried, and this is scraped down by a scraper 17 arranged on the side outer wall of the rotating drum 3 along an axial direction. A dried product is extracted through a product extraction opening 22 comprising a chute 21 arranged at the lower part of the scraper 17. The drum dryer device 1 provides the pan 9 with a liquid circulation pipe line 16 comprising an internal dispersing pipe 15 guiding the liquid to be treated Z stored in the pan 9 through a guide pipe 12 and ejecting it to the pan 9 through a pump 13 with a plurality of nozzle holes 15a arranged.