Abstract: The extruded granulator is the core equipment of pelletizing unit of polyolefin plant, which plays an important role in powder molding and processing. This paper mainly introduces the structure and working principle of the friction clutch of the CMP-230X type extruded granulator in polyethylene and polypropylene plants of a petrochemical company. The causes of typical failures of the friction clutch over the years are analyzed from the aspects of instrument control, mechanical construction and process operation and so forth. Meanwhile, the corresponding effective measures are formulated, which is helpful to reduce the stop times and ensure the long cycle operation of the extruded granulator.

Key words: extruded granulator, friction clutch, friction plate, failure