煤与废塑料共热解特性研究进展

煤与塑料共热解既能回收废塑料中的碳氢资源，又可以实现废塑料的资源无害化处理，是一种很有前景的废塑料资源化回收利用方式。本文概述了煤与塑料共热解的热解特性及其产物性质，分析了煤与塑料共热解的机理及共热解过程中氯的迁移规律，简要介绍了煤和塑料的不同混合方式及其对共热解特性的影响。文中指出煤与塑料共热解具有明显的增油减水效应，在煤热解过程中添加一定量的废塑料不仅可以改善焦油品质，同时对热解半焦的结构和反应性也有一定的影响，因此煤-塑料共热解是一种绿色高效资源化的废塑料处理方式，对于废塑料循环利用、解决白色污染问题及提高煤炭利用率具有重要意义。

Research progress on co-pyrolysis characteristics of coal and waste plastics

Co-pyrolysis of coal and plastics can recover the hydrocarbon resources in waste plastics and realize the harmless treatment of waste plastics, so it is a promising way to recycle waste plastics. In this paper, the pyrolysis characteristics and product properties during co-pyrolysis of coal and plastics were summarized, and the mechanism of co-pyrolysis and the transformation of chlorine during co-pyrolysis were analyzed. Furthermore, the different mixing modes of coal and plastics and their influence on co-pyrolysis characteristics were introduced. The co-pyrolysis of coal and plastics has obvious effect on increasing oil and reducing water. Adding a certain amount of waste plastics in the process of coal pyrolysis can improve the quality of tar, and impact the structure and reactivity of pyrolysis semicoke. Therefore, co-pyrolysis of coal and plastics is a green and efficient method to manage waste plastics, which is of great significance to recover waste plastics, solve white pollution problem and improve the utilization efficiency of coal.