Abstract
The machine of dechlorination using twin screw system and a dechlorination process have developed for removing from wasted plastics including chloridized polymer. In this paper, we describe summary of twin screw extruder. characteristics and results of experiment of the machine of dechlorination and the system of dechlorination.The residual chlorine content of general wasted plastics after decWorinating have achieved 0.25wt% under 350°C, resident time of 10 minutes. And the residual chlorine content have reduced 0.6wt% under 350°C comparing to 310°C, same resident time. The residual chlorine content have reduced 0.14 wt% under 13.3 minutes comparing to 6.6 minutes, same temperature, but saturated it in 10 minutes. And the residual chlorine content of 0.24 to 0.39wt% was obtained from wasted plastics containing initial chlorine content of 1.8 to 45.0wt% under 350°C and a resident time of 6.6 to 13.3 minutes. We have confirmed the machine of dechlorination using twin screw system were superior one comparing to a single screw system, batch reactor system, rotary kiln system.
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