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Potential yields and emission reductions of biojet fuels produced via hydrotreatment of biocrudes produced through direct thermochemical liquefaction.
Biotechnology for Biofuels ( IF 6.3 ) Pub Date : 2019-12-05 , DOI: 10.1186/s13068-019-1625-2
Susan van Dyk 1, 2 , Jianping Su 1 , Mahmood Ebadian 1, 2 , Don O'Connor 3 , Michael Lakeman 4 , Jack John Saddler 1, 2
Affiliation  

Background The hydrotreatment of oleochemical/lipid feedstocks is currently the only technology that provides significant volumes (millions of litres per year) of "conventional" biojet/sustainable aviation fuels (SAF). However, if biojet fuels are to be produced in sustainably sourced volumes (billions of litres per year) at a price comparable with fossil jet fuel, biomass-derived "advanced" biojet fuels will be needed. Three direct thermochemical liquefaction technologies, fast pyrolysis, catalytic fast pyrolysis and hydrothermal liquefaction were assessed for their potential to produce "biocrudes" which were subsequently upgraded to drop-in biofuels by either dedicated hydrotreatment or co-processed hydrotreatment. Results A significant biojet fraction (between 20.8 and 36.6% of total upgraded fuel volume) was produced by all of the processes. When the fractions were assessed against general ASTM D7566 specifications they showed significant compliance, despite a lack of optimization in any of the process steps. When the life cycle analysis GHGenius model was used to assess the carbon intensity of the various products, significant emission reductions (up to 74%) could be achieved. Conclusions It was apparent that the production of biojet fuels based on direct thermochemical liquefaction of biocrudes, followed by hydrotreating, has considerable potential.

中文翻译:

通过直接热化学液化产生的生物原油的加氢处理产生的生物喷气燃料的潜在产量和减排量。

背景 油脂化学品/脂质原料的加氢处理是目前唯一能够提供大量(每年数百万升)“常规”生物喷气/可持续航空燃料 (SAF) 的技术。然而,如果要以与化石喷气燃料相当的价格以可持续的来源(每年数十亿升)生产生物喷气燃料,则需要生物质衍生的“先进”生物喷气燃料。评估了三种直接热化学液化技术(快速热解、催化快速热解和水热液化)生产“生物原油”的潜力,随后通过专用加氢处理或协同加氢处理将其升级为直接生物燃料。结果 显着的生物喷射分数(在 20.8 和 36 之间)6% 的总提质燃料量)由所有工艺生产。当根据一般 ASTM D7566 规范评估馏分时,尽管在任何工艺步骤中都缺乏优化,但它们显示出显着的合规性。当使用生命周期分析 GHGenius 模型来评估各种产品的碳强度时,可以实现显着的减排(高达 74%)。结论 显然,基于生物原油的直接热化学液化,然后进行加氢处理的生物喷气燃料生产具有相当大的潜力。当使用生命周期分析 GHGenius 模型来评估各种产品的碳强度时,可以实现显着的减排(高达 74%)。结论 显然,基于生物原油的直接热化学液化,然后进行加氢处理的生物喷气燃料生产具有相当大的潜力。当使用生命周期分析 GHGenius 模型来评估各种产品的碳强度时,可以实现显着的减排(高达 74%)。结论 显然,基于生物原油的直接热化学液化,然后进行加氢处理的生物喷气燃料生产具有相当大的潜力。
更新日期:2019-12-05
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