Towards transportation fuel production from food waste: Potential of biocrude oil distillates for gasoline, diesel, and jet fuel
Towards transportation fuel production from food waste: Potential of biocrude oil distillates for gasoline, diesel, and jet fuel
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DOI：
10.1016/j.fuel.2021.121028
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发表时间：
2021-10
期刊：
影响因子：
7.4
通讯作者：
Jamison Watson;Buchun Si;Zixin Wang;Tengfei Wang;Amanda Valentine;Yuanhui Zhang
中科院分区：
文献类型：
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作者：
Jamison Watson;Buchun Si;Zixin Wang;Tengfei Wang;Amanda Valentine;Yuanhui Zhang
水热液化（HTL）生物原油显示出作为运输燃料供应补充的前景。然而，其较差的化学（杂原子含量、能量含量）、物理（粘度、密度）和热学（沸点分布、十六烷值、冷流性能）特性限制了商业应用。本研究调查了通过食物垃圾的移动式中试规模 HTL 转化获得的生物原油馏出物作为运输燃料（汽油、柴油、喷气燃料）混合原料的潜力。与生物原油相比，蒸馏增加了 H:C (4.2–13.7%)，降低了 O:C (5.5–93.5%)，降低了 N:C (6.0–39.0%)，并增加了 HHV (4.1–21.3%)，导致值分别为 1.97、0.003、0.004 和分别为 52.0 MJ•kg−1。这些值分别与汽油、柴油和 Jet A 燃料的 H:C (1.65, 1.94, 2.02)、O:C (0.02, ~0, ~0)、N:C (0.0002, 0.002, 0.002) 和 HHV (50.0, 53.1, 53.4 MJ•kg−1) 值相似。就物理性质而言，蒸馏降低了密度（23.8-30.5%）和粘度（99.5-99.9%），而酸度根据蒸馏温度而增加或减少。尽管蒸馏有很多好处，但由于馏出物的 N:C、粘度和酸度较差，仍然需要混合。理论混合计算确定，与 Jet A 混合是最有利的混合原料，当馏出物比例在 10% 至 50% 范围内时，与 Jet A 燃料的偏差达到 63.3-316.6%。
Biocrude oil from hydrothermal liquefaction (HTL) demonstrates promise as a supplement to the transportation fuel supply. However, its poor chemical (heteroatom content, energy content), physical (viscosity, density), and thermal (boiling point distribution, cetane value, cold-flow properties) characteristics limit commercial application. This study investigated the potential for the biocrude oil distillates derived from the mobile, pilot-scale HTL conversion of food waste to serve as a transportation fuel (gasoline, diesel, jet fuel) blendstock. Distillation increased the H:C (4.2–13.7%), decreased the O:C (5.5–93.5%), decreased the N:C (6.0–39.0%), and augmented the HHV (4.1–21.3%) compared to the biocrude oil, leading to values of 1.97, 0.003, 0.004, and 52.0 MJ•kg−1, respectively. These values were similar to the H:C (1.65, 1.94, 2.02), O:C (0.02, ~0, ~0), N:C (0.0002, 0.002, 0.002), and HHV (50.0, 53.1, 53.4 MJ•kg−1) values of gasoline, diesel, and Jet A fuels, respectively. With respect to the physical properties, distillation decreased the density (23.8–30.5%) and viscosity (99.5–99.9%), while the acidity either increased or decreased depending on the distillation temperature. Despite the benefits of distillation, blending is still required due to the poor N:C, viscosity, and acidity of the distillates. Theoretical blending calculations determined that blending with Jet A was the most favorable blendstock, amounting to deviations of 63.3–316.6% with the Jet A fuel when the distillate proportion ranged from 10 to 50%.