United States Department of Transportation
i
The Alcohol-to-Jet Conversion Pathway for Drop-In Biofuels: Techno-Economic Evaluation
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2018-09-01
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[PDF-1018.06 KB]
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Abstract:Alcohol-to-jet (ATJ) is a process for the conversion of alcohols to an alternative jet fuel blendstock based on catalytic steps historically utilized by the petroleum refining and petrochemical industry. This pathway provides a means for producing a sustainable alternative jet fuel (SAJF) from a wide variety of resources, offering a near term opportunity for alcohol producers to enter the SAJF market and for the aviation sector to meet growing SAJF demand. In this article, we review the technical background and evaluate selected variations of ATJ processes. Simulation and modeling is employed to assess some ATJ conversion schemes, with a particular focus on comparisons between the use of an ethanol or isobutanol intermediate. While the utilization of isobutanol offers a 34% lower conversion cost for the catalytic upgrading process, the cost of alcohol production is estimated to contribute to over 80% of the total cost at the refinery. The cost of feedstock and alcohol production has a dominant effect on the overall process economics.
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Content Notes:This manuscript is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/4.0/).
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