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Title: Understanding the role of Fischer–Tropsch reaction kinetics in techno‐economic analysis for co‐conversion of natural gas and biomass to liquid transportation fuels

Abstract

With the increased availability of low-cost natural gas, the co-conversion of natural gas and biomass-to-liquid fuels has attracted attention from industry due to its potential for improving liquid fuel yields while lowering greenhouse gas emissions. In this paper, we provide an understanding of Fischer-Tropsch kinetics, improvements in processing strategies for hydrocarbon production, and of its impact on cost for the co-conversion of natural gas and biomass-to-transportation fuels. Studies that investigate the effect of Fischer-Tropsch reaction kinetics on techno-economic analysis can be used to develop process models that consider reaction stoichiometry and account for the effect of the paraffin-to-olefin ratio. We consider two processing scenarios: (1) one that does not employ a hydrocracker, and (2) the other where a hydrocracker serves as an integral part of the process scheme. Our analysis shows that co-processing natural gas not only facilitates the economic benefits of converting biomass-to-liquid fuels but also facilitates flexibility in process integration. The resulting minimum fuel selling price ranged from $2.47-$3.47/GGE (gallon gasoline equivalent) without the hydrocracker and ranged from $2.17-$3.60/GGE with the inclusion of the hydrocracker, for a 50 million GGE hydrocarbon fuel production facility and for varying blending ratios for biomass from 0-100% with natural gas. The hydrocrackermore » helps to increase the production of diesel and jet fuels substantially, with carbon efficiencies of 50% attained for a chain growth probability of 0.87. The cost penalty comes from the capital expenses of the hydrocracker, and the expense may not be offset with hydrocarbon yield improvement.« less

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States). Biorefinery Analysis and Exploratory Research, National Bioenergy Center
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Bioenergy Technologies Office (EE-3B)
OSTI Identifier:
1547249
Alternate Identifier(s):
OSTI ID: 1543360
Report Number(s):
NREL/JA-5100-72752
Journal ID: ISSN 1932-104X
Grant/Contract Number:  
AC36-08GO28308; AC36‐08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
Biofuels, Bioproducts & Biorefining
Additional Journal Information:
Journal Volume: 13; Journal Issue: 5; Journal ID: ISSN 1932-104X
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; techno-economic analysis; gas-to-liquid; biomass; Fischer-Tropsch; gasification; renewable jet fuel; bioenergy; natural gas; co-conversion

Citation Formats

Sahir, Asad H., Zhang, Yanan, Tan, Eric C. D., and Tao, Ling. Understanding the role of Fischer–Tropsch reaction kinetics in techno‐economic analysis for co‐conversion of natural gas and biomass to liquid transportation fuels. United States: N. p., 2019. Web. doi:10.1002/bbb.2035.
Sahir, Asad H., Zhang, Yanan, Tan, Eric C. D., & Tao, Ling. Understanding the role of Fischer–Tropsch reaction kinetics in techno‐economic analysis for co‐conversion of natural gas and biomass to liquid transportation fuels. United States. doi:10.1002/bbb.2035.
Sahir, Asad H., Zhang, Yanan, Tan, Eric C. D., and Tao, Ling. Mon . "Understanding the role of Fischer–Tropsch reaction kinetics in techno‐economic analysis for co‐conversion of natural gas and biomass to liquid transportation fuels". United States. doi:10.1002/bbb.2035.
@article{osti_1547249,
title = {Understanding the role of Fischer–Tropsch reaction kinetics in techno‐economic analysis for co‐conversion of natural gas and biomass to liquid transportation fuels},
author = {Sahir, Asad H. and Zhang, Yanan and Tan, Eric C. D. and Tao, Ling},
abstractNote = {With the increased availability of low-cost natural gas, the co-conversion of natural gas and biomass-to-liquid fuels has attracted attention from industry due to its potential for improving liquid fuel yields while lowering greenhouse gas emissions. In this paper, we provide an understanding of Fischer-Tropsch kinetics, improvements in processing strategies for hydrocarbon production, and of its impact on cost for the co-conversion of natural gas and biomass-to-transportation fuels. Studies that investigate the effect of Fischer-Tropsch reaction kinetics on techno-economic analysis can be used to develop process models that consider reaction stoichiometry and account for the effect of the paraffin-to-olefin ratio. We consider two processing scenarios: (1) one that does not employ a hydrocracker, and (2) the other where a hydrocracker serves as an integral part of the process scheme. Our analysis shows that co-processing natural gas not only facilitates the economic benefits of converting biomass-to-liquid fuels but also facilitates flexibility in process integration. The resulting minimum fuel selling price ranged from $2.47-$3.47/GGE (gallon gasoline equivalent) without the hydrocracker and ranged from $2.17-$3.60/GGE with the inclusion of the hydrocracker, for a 50 million GGE hydrocarbon fuel production facility and for varying blending ratios for biomass from 0-100% with natural gas. The hydrocracker helps to increase the production of diesel and jet fuels substantially, with carbon efficiencies of 50% attained for a chain growth probability of 0.87. The cost penalty comes from the capital expenses of the hydrocracker, and the expense may not be offset with hydrocarbon yield improvement.},
doi = {10.1002/bbb.2035},
journal = {Biofuels, Bioproducts & Biorefining},
number = 5,
volume = 13,
place = {United States},
year = {2019},
month = {7}
}

Journal Article:
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This content will become publicly available on July 22, 2020
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