Author：Yun-Sheng Tien1, Chin-Yuan Chang2, Ling-Hsi Chen2

1 Associate Agricultural Engineer, Taichung District Agricultural Research and Extension Station , COA.
2 Assistant Agricultural Engineer, Taichung District Agricultural Research and Extension Station , COA.

Abstract：

    The purpose of this research is to study and develop a rice straw extruder consists of feeding, extruding & molding and discharging, as the production of Refuse Derived Fuel from rice straw. It is assembled a prototype of horizontal single-chamber extruding and molding machine, which is driven by the PLC and hydraulic devices to guide 14-16 times pre-extrusion (feeding) and a full-extrusion (compacting and discharging). Preliminary test results show that each working time of the pre-extrusion and full-extrusion required 8.15 sec and 14.42 sec, respectively. Without considering other work items, such as the hydraulic cylinder delay back, the maximum capacity chamber operating time of about 2.3 minutes. The volume compression ratio is approximately 7.8 times before and after rice straw extruded, but it is very different from the feeding amount of extrusion, product density and so on.

Keywords: Rice straw, Extrusion, Extruding, Molding machine.