
污泥与废塑料共热解行为及三相产物研究进展
付尹宣, 邓同辉, 文震林, 邹武, 石金明
污泥与废塑料共热解行为及三相产物研究进展
Research Progress on Co-Pyrolysis Behavior and Three-Phase Products of Sludge and Waste Plastics
污泥和废弃塑料是环境治理的两大难题。采用共热解的方法可以有效减少污染物的体积,提高污染物的资源化利用率,产生较大的环境和经济效益,是污泥与废塑料高值化利用的重要方向。从污泥和废塑料的高效利用的角度出发,对热解影响因素、热力学行为、气液固三相产物三大方面进行研究,主要分析反应温度、物料比、催化剂类型等各因素对污泥和废塑料共热解的影响,对污泥和废塑料热力学行为(热分析曲线和动力学模型)和气液固三相产物进行分析探讨,指出反应温度会影响可燃气的占比以及热解油中烃类和含氧类、含氮类有机物的含量。最后,展望了污泥和废弃塑料共热解的发展前景,认为探究合适的反应条件以提高共热解转化效率、明晰共热解反应机理、选择高效稳定的催化剂是今后的研究方向。
Sludge and waste plastics are two major challenges in environmental governance. The method of co-pyrolysis can effectively reduce the volume of pollutants, improve the resource utilization rate of pollutants, and generate significant environmental and economic benefits. It is an important direction for the high-value utilization of sludge and waste plastics. From the perspective of efficient utilization of sludge and waste plastics, research was conducted on the influencing factors, thermodynamic behavior, and gas liquid solid three-phase products of pyrolysis. The main analysis focused on the effects of reaction temperature, material ratio, catalyst type, and other factors on the co-pyrolysis of sludge and waste plastics. The thermodynamic behavior (thermal analysis curves and kinetic models) and gas liquid solid three-phase products of sludge and waste plastics were analyzed and discussed. It is pointed out that the reaction temperature affects the proportion of combustible gas and the content of hydrocarbons, oxygen-containing, and nitrogen-containing organic compounds in pyrolyzed oil. Finally, the development prospects of co-pyrolysis of sludge and waste plastics were discussed, and it was believed that exploring appropriate reaction conditions to improve co-pyrolysis conversion efficiency, clarifying co-pyrolysis reaction mechanisms, and selecting efficient and stable catalysts would be the future research directions.
Sludge / Waste plastics / Co-pyrolysis / Three-phase products
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