Abstract The thermal cracking of waste cooking oil (WCO) via pyrolysis was performed using a laboratory scale fixed-bed reactor. The effects of the final pyrolysis temperature (from 550 °C to 800 °C) and the heating rate (5 °C/min, 15 °C/min, 20 °C/min, 25 °C/min) on pyrolysis products distribution has been investigated and a maximum bio-oil yield of 80 wt% has been obtained at 800 °C and 15 °C/min. The bio-oil fuel properties shows that this pyrolytic oil has high caloric value (HHV around 8843 kg/Kcal) promoting its use as a liquid fuel but some other properties (high acidity index around 126.8 mg KOH/g sample and high viscosity about 8.95 cSt) need to be upgraded. The GC/MS characterization of the bio-oil highlights its high molecular complexity allowing it to be used as source of chemical products and of active molecules. The syngas heating value (reaching 8 MJ/kg) is suitable for its application as source of energy for the pyrolysis reactor. The remaining biochar is suitable for application as fertilizer since it is rich of iron and organic carbon. The stochiometric model of WCO pyrolysis has been established basing on the pyrolysis products yields, the CHNS-O composition of raw material and remaining biochar, and the syngas chemical composition.

中文翻译：

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通过热解工艺利用废弃食用油生产第二代生物燃料

摘要 使用实验室规模的固定床反应器通过热解对废食用油 (WCO) 进行热裂解。最终热解温度（从 550 °C 到 800 °C）和加热速率（5 °C/min、15 °C/min、20 °C/min、25 °C/min）对热解产物分布的影响经研究，在 800 °C 和 15 °C/min 下获得了 80 wt% 的最大生物油产量。生物油燃料特性表明，这种热解油具有高热值（HHV 约 8843 kg/Kcal），促进其用作液体燃料，但还有一些其他特性（约 126.8 mg KOH/g 样品的高酸度指数和约 8.95 的高粘度） cSt) 需要升级。生物油的 GC/MS 表征突出了其高分子复杂性，使其可用作化学产品和活性分子的来源。合成气热值（达到8 MJ/kg）适合作为热解反应器的能源应用。剩余的 biochar 适合用作肥料，因为它富含铁和有机碳。根据热解产物的产率、原料和剩余生物炭的 CHNS-O 组成以及合成气的化学组成，建立了 WCO 热解的化学计量模型。