【摘要】 对聚丙烯(PP)和聚氯乙烯(PVC)混合物在380℃下的热降解进行了研究。检测了PP和PVC混合塑料降解液体产物的沸点分布,并用铁氧化物作为固体吸附剂以除去产品中的氯元素。同时还研究了该混合物在ZSM 5催化剂存在下的降解,与热降解相比,ZSM 5催化剂加快了降解的速率,并且降低了液体产品的沸点。铁氧化物α FeOOH和Fe3O4则能有效地降低产品中的氯含量。更多还原

【Abstract】 The thermal degradation of PP/PVC mixture at 380?℃ was carried out in a glass batch reactor under atmospheric pressure The boilingpoint (bp) distributions of degradation products and its chlorine removal were examined The catalytic thermal degradation of the plastic mixture was also carried out with ZSM5 as catalyst and iron oxides(αFeOOH, Fe2O3, Fe3O4) as chlorine sorbents Compared with thermal degradation, the ZSM5 catalyst accelerated the rate of degradation, increased the weight percent of lower molecular weight component, and lowered the bp of the liquid products As a dechlorination sorbent, αFeOOH can significantly decrease the chlorine content in the oil from 165w% to 063w% When αFeOOH /ZSM5 is used in vapor phase, the organic chlorine content can decrease to 013w% Fe3O4 also possesses the ability of dechlorination It is the crystalline structure of Fe3O4 that is very efficient for dechlorination更多还原