This article details techno‐economic analyses for producing alternative jet fuel (AJF) at a greenfield integrated biorefinery (IBR) using softwood forest residues. The scenarios and their corresponding economic outcomes differ based on the co‐product selections. The selected technology to produce AJF uses a mild bisulfite pretreatment process to prepare the feedstock for enzymatic hydrolysis and fermentation to isobutanol, which is then upgraded to hydrocarbon ‘drop‐in’ fuels using an alcohol‐to‐jet process. The hydrocarbons are a combination of jet fuel and aviation gasoline (AvGas). The residuals are used to produce co‐products. Four co‐product scenarios are compared to quantify the impact of co‐product selection on the primary products, jet fuel, and AvGas minimum selling prices (MSPs). For the baseline (BL) scenario, residuals are burned to create steam for conversion to electricity. The excess power generated is sold at a wholesale price to the grid. The total capital investment for an IBR with a forest residue feed rate of 721 k dry metric ton year⁻¹ is 1027 MM US$, and the AJF MSP is 2.07 US$ L⁻¹. The BL scenario is compared with three co‐product selections: 1) liquid calcium lignosulfonate and electricity; 2) activated carbon; and 3) a combination of liquid calcium lignosulfonate and activated carbon. As anticipated, the conversion of residuals into higher value co‐products provides additional revenue to offset the production cost of hydrocarbons. The alternative co‐product scenarios reduced the predicted MSPs; however, the most cost‐competitive model, the scenario where both activated carbon and calcium lignosulfonates are produced, reduced the jet fuel MSP to 1.49 US$ L⁻¹, a 28% reduction. © 2020 Society of Chemical Industry and John Wiley & Sons, Ltd

中文翻译：

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副产品选择对使用森林砍伐残渣生产的替代喷气燃料的技术经济分析的影响

本文详细介绍了使用针叶林残留物在未开发的综合生物精炼厂（IBR）生产替代喷气燃料（AJF）的技术经济分析。根据联产品的选择，情景及其相应的经济结果也有所不同。选择的生产AJF的技术使用温和的亚硫酸氢盐预处理工艺来制备原料，以进行酶促水解和发酵为异丁醇，然后使用醇喷工艺将其升级为烃类“直接”燃料。碳氢化合物是喷气燃料和航空汽油（AvGas）的组合。残留物用于生产副产品。比较了四种副产品方案，以量化副产品选择对主要产品，喷气燃料和AvGas最低销售价格（MSP）的影响。对于基准（BL）方案，燃烧残余物以产生蒸汽以转化为电能。产生的多余电力以批发价出售给电网。每年以211.2万干吨的森林残渣进料速度进行IBR的总资本投资^-1是1027 MM美元，而AJF MSP是2.07 US L ^-1。将BL情景与三种副产品选择进行比较：1）液态木质素磺酸钙和电；2）活性炭；3）液态木质素磺酸钙和活性炭的混合物。如预期的那样，将残余物转化为高价值副产品可提供额外收入，以抵消碳氢化合物的生产成本。替代联产品方案降低了预测的MSP；但是，最具成本竞争力的模型，即同时生产活性炭和木质素磺酸钙的情景，将航空燃料的MSP降低至1.49美元L ^-1，降低了28％。©2020年化学工业协会和John Wiley＆Sons，Ltd