Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
Bioresour Technol. 2020 Aug;309:123360. doi: 10.1016/j.biortech.2020.123360. Epub 2020 Apr 11.
In this study, the CO co-gasification characteristics of pyrolytic oil distillation residue and biochar under different reaction temperatures were investigated by thermogravimetric analyzer (TGA). The influence of blend ratio on co-gasification synergy was adequately characterized by correlating the evolution of chemical structure and active AAEMs. The results indicated that increasing proportion of pyrolytic oil distillation residue could effectively improve gasification reactivity of biochar and enhance synergistic behaviors during co-gasification process, whereas the raising reaction temperature dwindled the enhancement of co-gasification reactivity and mutual promotion between individual samples. Moreover, three gasification kinetic models suggested that the lowest apparent activation energy (181.49~182.72 kJ/mol) among blends was obtained by 70 wt% additions of pyrolytic oil distillation residue. Furthermore, the results of Raman and ICP-AES analysis well related to the co-gasification synergy. The migration of active AAEMs and evolution of carbon structure had a pronounced influence on synergistic effect as co-gasification reaction progressed.
在这项研究中，通过热重分析仪（TGA）研究了不同反应温度下热解油蒸馏残渣和生物炭的 CO 共气化特性。通过关联化学结构和活性 AAEM 的演变，充分表征了共气化协同作用中混合物比例的影响。结果表明，增加热解油蒸馏残渣的比例可以有效提高生物炭的气化反应性，并增强共气化过程中的协同作用，而升高反应温度会降低共气化反应性的增强和各个样品之间的相互促进作用。此外，三个气化动力学模型表明，在 70wt%的热解油蒸馏残渣添加量下，混合物的表观活化能最低（181.49~182.72kJ/mol）。此外，拉曼和 ICP-AES 分析的结果与共气化协同作用很好地相关。随着共气化反应的进行，活性 AAEM 的迁移和碳结构的演变对协同效应有显著影响。
