The major improvement
For solving the problems by seasonal variation, the dryer has been improved for being
able to treat smoothly however high moist waste may be received. The heat capacity of the dryer was increased from 2million kcal/hr to 2.5milion kcal/hr for improving drying
efficiency. Preventing fire and explosion by high temperature operation, the oxygen
concentration analyzer inside the dryer and the explosion proof hole upper the dryer were
installed and the waste slot conveyor was also sealed to control oxygen inflow. As the
additional air mixing system was installed, combustion efficiency has been increased
through the sufficient mixing. Extending retention time and keeping a proper heating load
by renovating the combustion chamber shape, incomplete combustion factor also reduced.
The collection cone of cyclone was expanded and the screw conveyor was installed to
minimize the loss of combustible material. The conveyor type was changed from belt to
chain or apron for keeping the slope as 25˚ and the scraper was introduced to prevent a
waste jam on the conveyor. As the vibrating screen type was also changed form vibration
motor to crankshaft for coping actively with the changing bulky density, the vibration cycle
and speed could be controlled easily. A vibration roller was installed in the wind separator
to increase the separation efficiency and prevent the accumulation on the latter part of the
system.