This syeserm is installed successful in China, can also be used to dry coconut husk chips, coconut fiber, wood chips, biomass, hay, grass, bagasse, and so on. Triple Pass Rotary Drum Dryer The triple-pass drum consists of three concentric cylinders that are supported from the heads on either end in a manner that allows them to expand at different rates relative to each other. The material is fed into the inner cylinder, passes to the middle cylinder and then to the outer cylinder passing a rolling motion and forming a stable product. Each concentric cylinder of the triple-pass drum is equipped with heavy-duty flights for raising the material and showering it through the drying gas stream as the drum is rotated. The triple-pass drum is equipped with three temperature sensors at the drum outlet. The temperature sensors are interlocked with the burner controls. A drum inlet water spray extinguishing system is also interlocked with the sensors. An exit gas stream temperature in excess of 240° F activates the inlet water spray extinguishing system. The drum inlet is also equipped with a temperature sensor. The inlet is interlocked with the burner management panel to shutdown the burner if the inlet temperature exceeds 1600° F.
