生物质烘焙预处理对热解制芳烃的影响研究进展
Research progress on the effect of biomass torrefaction pretreatment on pyrolysis-based aromatics production
综述了生物质烘焙预处理耦合热解制取芳烃的研究现状,重点探讨了烘焙方式、耦合预处理工艺、催化剂类型及反应温度对芳烃制取的影响。单一烘焙预处理通过脱除水分、降低氧含量优化生物质特性,为芳烃生成奠定基础;烘焙与酸预处理、催化热解的耦合工艺可协同脱除杂质、调控反应路径,显著提升芳烃产率;ZSM-5、HZSM-5等催化剂及金属改性催化体系,能有效促进芳构化反应并改善产物分布;适宜的烘焙与热解温度能够精准调控生物质组分降解与芳烃定向生成。通过优化烘焙预处理及热解反应条件,能实现芳烃产率与选择性的双重提升,为生物质高值化转化制取芳烃提供高效途径。
This review systematically evaluates current research on aromatic hydrocarbon production through pyrolysis integrated with biomass torrefaction pretreatment.The study focused on the torrefaction methodologies,combined pretreatment approaches,catalyst selection,and reaction temperature on aromatic hydrocarbon production.Single-stage torrefaction pretreatment enhances biomass quality by eliminating moisture and reducing oxygen content,thereby establishing a favorable feedstock foundation for subsequent aromatic formation.Integrated processes combining torrefaction with acid pretreatment and catalytic pyrolysis demonstrate synergistic effects in impurity removal and reaction pathway modulation,resulting in substantial improvements in aromatic productivity.Catalyst systems including ZSM-5,HZSM-5,and metal-modified variants exhibit superior performance in promoting aromatization reactions while optimizing product distribution profiles.Strategic control of torrefaction and pyrolysis temperatures enables precise regulation of biomass component degradation kinetics and targeted aromatic synthesis pathways.Through optimized thermal processing conditions,this integrated approach achieves simultaneous enhancement of both aromatic yield and selectivity,offering a technically viable pathway for high-value conversion of lignocellulosic biomass into industrially significant aromatic compounds.
biomass / torrefaction / pyrolysis / aromatic hydrocarbons / acid pretreatment
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国家自然科学基金项目(52276181)
国家重点研发项目(2023YFB4203605)
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