School of Energy and Power Engineering, Jiangsu University, Jiangsu 212013, China.
State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Hubei 430074, China.
Bioresour Technol. 2021 Jan;319:124176. doi: 10.1016/j.biortech.2020.124176. Epub 2020 Sep 28.
In this work, the conversion of Enteromorpha clathrata into bio-oil through hydrothermal liquefaction (HTL) was investigated under different preparation conditions. A two-step reaction method was compared with single-step reaction. At a high temperature, bio-oil produced through the two-step hydrothermal reaction displayed slight changes in yield, but solid residue rate was low. The liquid-to-material ratio of the optimal preparation condition was 40/4 (mL/g). Bio-oil produced in each experiment at this ratio was further analyzed using GC/MS. Furthermore, density functional theory (DFT) quantitative calculation was used in analyzing and proving the possible reaction path of the conversion of furan compounds to aromatic compounds during a direct high-temperature liquefaction process. Results revealed that the two-step method can ensure a high bio-oil yield, while preventing the occurrence of side reactions caused by long-term high-temperature reactions, and improve the bio-oil quality.
在这项工作中，通过水热液化（HTL）将石莼转化为生物油，在不同的制备条件下进行了研究。比较了两步反应法和单步反应法。在高温下，通过两步水热反应得到的生物油产率略有变化，但固体残渣率较低。最佳制备条件下的液料比为 40/4（mL/g）。在该比例下，在每个实验中产生的生物油进一步使用 GC/MS 进行了分析。此外，还使用密度泛函理论（DFT）定量计算分析和证明了在直接高温液化过程中呋喃化合物转化为芳香族化合物的可能反应途径。结果表明，两步法可以在防止由于长期高温反应而引起的副反应发生的同时，确保高的生物油产率，并提高生物油的质量。
