摘要
生物质是一种来源丰富的可再生资源,塑料是一种来源于化石燃料的化工产品,两者共热解既能有效解决生物质有效氢碳比低的问题,又能减少塑料丢弃时对环境的污染。本文综述了塑料及生物质三组分纤维素、半纤维素和木质素各自的热解机理,以及生物质各组分与塑料共热解的协同机理和影响因素,得出:生物质在热解过程中生成的呋喃等化合物,可以与塑料热解生成的轻质烯烃发生Diels-Alder反应,生成单环芳香烃,并经低聚作用或与呋喃环反应,生成多环芳环,从而有效提高热解生物油的品质。此外,原料组成、热解温度以及催化剂等均会对共热解产物分布产生重要影响。指出优化反应参数、制备高效催化剂以及明确共热解反应机理是利用生物质和废塑料定向热解制备高附加值燃油的关键。
Biomass was a renewable resource with abundant sources,and plastic was a chemical product derived from fossil fuels.The co-pyrolysis of the two could not only solve the problem of low effective hydrogen-carbon ratio of biomass effectively,but also reduce the environment pollution when plastics were discarded.In this paper,the pyrolysis mechanism of three components of plastics and biomass,as well as the synergistic mechanism and influencing factors of co-pyrolysis of each biomass components and plastics,were reviewed.It was concluded that compounds such as furans generated during the pyrolysis process could undergo Diels-Alder reaction with the olefins generated by the pyrolysis of plastics to form monocyclic aromatic hydrocarbons,and polycyclic aromatic rings could be formed by oligomerization or reaction with furan rings,thus effectively improving the quality of pyrolysis biooil.In addition,the composition of raw materials,pyrolysis temperature,and catalyst would have an important impact on the distribution of co-pyrolysis products.Finally,it was pointed out that optimizing the reaction parameters,preparing high-efficiency catalysts,and clarifying the reaction mechanism of co-pyrolysis were the key to the preparation of high value-added fuel oil by directional pyrolysis of biomass and waste plastics.
作者
邢艳东
苏升煜
孙培育
王睿思
孙堂磊
XING Yandong;SU Shengyu;SUN Peiyu;WANG Ruisi;SUN Tanglei(National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization,Institute of Urban and Rural Mining,Changzhou University,Changzhou 213164,China;Jiangsu Shanyuan Technology Co.,Ltd.,Changzhou 213101,China;Changzhou Key Laboratory of Biomass Green,Safe&High Value Utilization Technology,Changzhou 213164,China)
出处
《生物质化学工程》
2025年第4期111-118,共8页
Biomass Chemical Engineering
基金
国家自然科学基金资助项目(52306223,52436007)。
