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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. This study provides 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 tomore » 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 Laboratory (NREL), Golden, CO (United States)
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
Report Number(s):
NREL/JA-5100-72752
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article
Journal Name:
Biofuels, Bioproducts and Biorefining
Additional Journal Information:
Journal Name: Biofuels, Bioproducts and Biorefining
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, 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, & 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, 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 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. This study provides 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 and Biorefining},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {7}
}