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Title: Technoeconomic and life-cycle analysis of single-step catalytic conversion of wet ethanol into fungible fuel blendstocks

Abstract

Technoeconomic and life-cycle analyses are presented for catalytic conversion of ethanol to fungible hydrocarbon fuel blendstocks, informed by advances in catalyst and process development. Whereas prior work toward this end focused on 3-step processes featuring dehydration, oligomerization, and hydrogenation, the consolidated alcohol dehydration and oligomerization (CADO) approach described here results in 1-step conversion of wet ethanol vapor (40 wt% in water) to hydrocarbons and water over a metal-modified zeolite catalyst. A development project increased liquid hydrocarbon yields from 36% of theoretical to >80%, reduced catalyst cost by an order of magnitude, scaled up the process by 300-fold, and reduced projected costs of ethanol conversion 12-fold. Current CADO products conform most closely to gasoline blendstocks, but can be blended with jet fuel at low levels today, and could potentially be blended at higher levels in the future. Operating plus annualized capital costs for conversion of wet ethanol to fungible blendstocks are estimated at $2.00/GJ for CADO today and $1.44/GJ in the future, similar to the unit energy cost of producing anhydrous ethanol from wet ethanol ($1.46/GJ). Including the cost of ethanol from either corn or future cellulosic biomass but not production incentives, projected minimum selling prices for fungible blendstocks produced viamore » CADO are competitive with conventional jet fuel when oil is $100 per barrel but not at $60 per barrel. However, with existing production incentives, the projected minimum blendstock selling price is competitive with oil at $60 per barrel. Life-cycle greenhouse gas emission reductions for CADO-derived hydrocarbon blendstocks closely follow those for the ethanol feedstock.« less

Authors:
; ; ; ; ORCiD logo; ; ; ; ORCiD logo; ; ; ; ; ; ; ; ; ORCiD logo;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1575808
Grant/Contract Number:  
EE0006875; AC05-00OR22725
Resource Type:
Published Article
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Name: Proceedings of the National Academy of Sciences of the United States of America; Journal ID: ISSN 0027-8424
Publisher:
Proceedings of the National Academy of Sciences
Country of Publication:
United States
Language:
English

Citation Formats

Hannon, John R., Lynd, Lee R., Andrade, Onofre, Benavides, Pahola Thathiana, Beckham, Gregg T., Biddy, Mary J., Brown, Nathan, Chagas, Mateus F., Davison, Brian H., Foust, Thomas, Junqueira, Tassia L., Laser, Mark S., Li, Zhenglong, Richard, Tom, Tao, Ling, Tuskan, Gerald A., Wang, Michael, Woods, Jeremy, and Wyman, Charles E. Technoeconomic and life-cycle analysis of single-step catalytic conversion of wet ethanol into fungible fuel blendstocks. United States: N. p., 2019. Web. doi:10.1073/pnas.1821684116.
Hannon, John R., Lynd, Lee R., Andrade, Onofre, Benavides, Pahola Thathiana, Beckham, Gregg T., Biddy, Mary J., Brown, Nathan, Chagas, Mateus F., Davison, Brian H., Foust, Thomas, Junqueira, Tassia L., Laser, Mark S., Li, Zhenglong, Richard, Tom, Tao, Ling, Tuskan, Gerald A., Wang, Michael, Woods, Jeremy, & Wyman, Charles E. Technoeconomic and life-cycle analysis of single-step catalytic conversion of wet ethanol into fungible fuel blendstocks. United States. doi:10.1073/pnas.1821684116.
Hannon, John R., Lynd, Lee R., Andrade, Onofre, Benavides, Pahola Thathiana, Beckham, Gregg T., Biddy, Mary J., Brown, Nathan, Chagas, Mateus F., Davison, Brian H., Foust, Thomas, Junqueira, Tassia L., Laser, Mark S., Li, Zhenglong, Richard, Tom, Tao, Ling, Tuskan, Gerald A., Wang, Michael, Woods, Jeremy, and Wyman, Charles E. Mon . "Technoeconomic and life-cycle analysis of single-step catalytic conversion of wet ethanol into fungible fuel blendstocks". United States. doi:10.1073/pnas.1821684116.
@article{osti_1575808,
title = {Technoeconomic and life-cycle analysis of single-step catalytic conversion of wet ethanol into fungible fuel blendstocks},
author = {Hannon, John R. and Lynd, Lee R. and Andrade, Onofre and Benavides, Pahola Thathiana and Beckham, Gregg T. and Biddy, Mary J. and Brown, Nathan and Chagas, Mateus F. and Davison, Brian H. and Foust, Thomas and Junqueira, Tassia L. and Laser, Mark S. and Li, Zhenglong and Richard, Tom and Tao, Ling and Tuskan, Gerald A. and Wang, Michael and Woods, Jeremy and Wyman, Charles E.},
abstractNote = {Technoeconomic and life-cycle analyses are presented for catalytic conversion of ethanol to fungible hydrocarbon fuel blendstocks, informed by advances in catalyst and process development. Whereas prior work toward this end focused on 3-step processes featuring dehydration, oligomerization, and hydrogenation, the consolidated alcohol dehydration and oligomerization (CADO) approach described here results in 1-step conversion of wet ethanol vapor (40 wt% in water) to hydrocarbons and water over a metal-modified zeolite catalyst. A development project increased liquid hydrocarbon yields from 36% of theoretical to >80%, reduced catalyst cost by an order of magnitude, scaled up the process by 300-fold, and reduced projected costs of ethanol conversion 12-fold. Current CADO products conform most closely to gasoline blendstocks, but can be blended with jet fuel at low levels today, and could potentially be blended at higher levels in the future. Operating plus annualized capital costs for conversion of wet ethanol to fungible blendstocks are estimated at $2.00/GJ for CADO today and $1.44/GJ in the future, similar to the unit energy cost of producing anhydrous ethanol from wet ethanol ($1.46/GJ). Including the cost of ethanol from either corn or future cellulosic biomass but not production incentives, projected minimum selling prices for fungible blendstocks produced via CADO are competitive with conventional jet fuel when oil is $100 per barrel but not at $60 per barrel. However, with existing production incentives, the projected minimum blendstock selling price is competitive with oil at $60 per barrel. Life-cycle greenhouse gas emission reductions for CADO-derived hydrocarbon blendstocks closely follow those for the ethanol feedstock.},
doi = {10.1073/pnas.1821684116},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {11}
}

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DOI: 10.1073/pnas.1821684116

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