Abstract
We have developed the new chemical recycle system for waste polyolefin plastics using H-garosilicates. The catalytic degradation of polyolefin using H-gallosilicates was examined in present study using a bench scale reactor (1.0kg/hr) with continuous feeding. We tried a continuous examination using HDPE(High Density Poly-Ethylene) for 40 days. In this continuous long time experiment, two catalyst cracking reactor was used, and examined by repetition of cracking and regeneration every 24 hours. In this experiment, long time stability of cracking catalyst activity, and the problem of this chemical recycle process were studied. For about 1 month (720hr), BTX recovery rate was over 50wt%, and continued stable state. But after 1 month, BTX recovery rate decreased gently. Except the HDPE, polyethelene of industrial waste (IWPE), and RPF (Cl;850ppm) were studied. IWPE was the same result which was tested by repetition of cracking and regeneration every 24 hours for the recovery rate and catalyst life time. But, RPF was deactivated after 16 hours. As the impurity except chlorine, the effect of nytrogen which include in polyamides was supposed for the RPF.
