Pihl Olga, Khaskhachikh Vladimir, Kravetskaja Julia, Niidu Allan, Siirde Andres
Oil Shale Competence Centre, TalTech Virumaa College, School of Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia.
Department of Energy Technology, School of Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia.
ACS Omega. 2021 Nov 15;6(47):31658-31666. doi: 10.1021/acsomega.1c04188. eCollection 2021 Nov 30.
Recycling of polymeric wastes is important for both energy recovery and raw material processing. In light of the EU Green Deal, the oil shale industry is looking for new opportunities to use its production potential. As an intermediate stage, the co-pyrolysis of oil shale with waste plastic and tires will be considered acceptable. The article presents the kinetics of pyrolysis of Estonian oil shale, the main polymer components of municipal waste, and their mixtures with oil shale by the thermogravimetric analysis method. The influence of each component separately on the process of sample weight loss during co-pyrolysis was also studied. It is shown that when plastics are added to oil shale, the experimental and calculated data coincide according to the principle of the additive contribution of each component. Kinetic parameters were calculated according to the Coats-Redfern integral method and show that during the co-pyrolysis of mixtures of oil shale with polymer wastes, the value of the activation energy increases in comparison with the pyrolysis of oil shale. Based on the experimental data, it was determined that there is a manifestation of a synergistic effect in the form of an increase in the yield of liquid products during the co-pyrolysis of oil shale and polymer wastes.
聚合物废料的回收利用对于能源回收和原材料加工都很重要。鉴于欧盟绿色协议，油页岩行业正在寻找利用其生产潜力的新机会。作为中间阶段，油页岩与废塑料和轮胎的共热解将被视为可行。本文通过热重分析法介绍了爱沙尼亚油页岩、城市垃圾的主要聚合物成分及其与油页岩混合物的热解动力学。还研究了各组分分别对共热解过程中样品失重过程的影响。结果表明，当向油页岩中添加塑料时，根据各组分的加和贡献原理，实验数据和计算数据相符。根据Coats-Redfern积分法计算了动力学参数，结果表明，在油页岩与聚合物废料混合物的共热解过程中，活化能的值比油页岩热解时有所增加。基于实验数据，确定在油页岩与聚合物废料的共热解过程中，存在以液体产物产率增加形式表现出的协同效应。
