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Title: Impacts of uncertain feedstock quality on the economic feasibility of fast pyrolysis biorefineries with blended feedstocks and decentralized preprocessing sites in the Southeastern United States

Abstract

This study performs techno-economic analysis and Monte Carlo simulations (MCS) to explore the effects that variations in biomass feedstock quality have on the economic feasibility of fast pyrolysis biorefineries using decentralized preprocessing sites (i.e., depots that produce pellets). Two biomass resources in the Southeastern United States, that is, pine residues and switchgrass, were examined as feedstocks. A scenario analysis was conducted for an array of different combinations, including different pellet ash control levels, feedstock blending ratios, different biorefinery capacities, and different biorefinery on-stream capacities, followed by a comparison with the traditional centralized system. MCS results show that, with depot preprocessing, variations in the feedstock moisture and feedstock ash content can be significantly reduced compared with a traditional centralized system. For a biorefinery operating at 100% of its designed capacity, the minimum fuel selling price (MFSP) of the decentralized system is 3.97–4.39 per gallon gasoline equivalent (GGE) based on the mean value across all scenarios, whereas the mean MFSP for the traditional centralized system was 3.79–4.12/GGE. To understand the potential benefits of highly flowable pellets in decreasing biorefinery downtime due to feedstock handling and plugging problems, this study also compares the MFSP of the decentralized system at 90% of its designedmore » capacity with a traditional system at 80%. The analysis illustrates that using low ash pellets mixed with switchgrass and pine residues generates a more competitive MFSP. Specifically, for a biorefinery designed for 2,000 oven dry metric ton per day, running a blended pellet made from 75% switchgrass and 25% pine residues with 2% ash level, and operating at 90% of designed capacity could make an MFSP between 4.49 and 4.71/GGE. In contrast, a traditional centralized biorefinery operating at 80% of designed capacity marks an MFSP between 4.72 and 5.28.« less

Authors:
 [1];  [1];  [1];  [2];  [2];  [2]; ORCiD logo [3]
  1. Department of Forest Biomaterials North Carolina State University Raleigh NC USA
  2. Department of Agricultural and Resource Economics The University of Tennessee Knoxville TN USA
  3. Yale School of the Environment Yale University New Haven CT USA
Publication Date:
Research Org.:
Univ. of Tennessee, Knoxville, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Bioenergy Technologies Office; National Science Foundation (NSF)
OSTI Identifier:
1665924
Alternate Identifier(s):
OSTI ID: 1781050; OSTI ID: 1786949
Grant/Contract Number:  
DE‐EE0006639; EE0006639; 1847182; 2038439
Resource Type:
Published Article
Journal Name:
Global Change Biology. Bioenergy
Additional Journal Information:
Journal Name: Global Change Biology. Bioenergy Journal Volume: 12 Journal Issue: 11; Journal ID: ISSN 1757-1693
Publisher:
Wiley-Blackwell
Country of Publication:
United Kingdom
Language:
English
Subject:
09 BIOMASS FUELS; ash content; biofuel; depot; forest residues; minimum fuel selling price; Monte Carlo simulation; pellet; switchgrass; techno‐economic analysis; uncertainty

Citation Formats

Lan, Kai, Park, Sunkyu, Kelley, Stephen S., English, Burton C., Yu, Tun‐Hsiang E., Larson, James, and Yao, Yuan. Impacts of uncertain feedstock quality on the economic feasibility of fast pyrolysis biorefineries with blended feedstocks and decentralized preprocessing sites in the Southeastern United States. United Kingdom: N. p., 2020. Web. https://doi.org/10.1111/gcbb.12752.
Lan, Kai, Park, Sunkyu, Kelley, Stephen S., English, Burton C., Yu, Tun‐Hsiang E., Larson, James, & Yao, Yuan. Impacts of uncertain feedstock quality on the economic feasibility of fast pyrolysis biorefineries with blended feedstocks and decentralized preprocessing sites in the Southeastern United States. United Kingdom. https://doi.org/10.1111/gcbb.12752
Lan, Kai, Park, Sunkyu, Kelley, Stephen S., English, Burton C., Yu, Tun‐Hsiang E., Larson, James, and Yao, Yuan. Fri . "Impacts of uncertain feedstock quality on the economic feasibility of fast pyrolysis biorefineries with blended feedstocks and decentralized preprocessing sites in the Southeastern United States". United Kingdom. https://doi.org/10.1111/gcbb.12752.
@article{osti_1665924,
title = {Impacts of uncertain feedstock quality on the economic feasibility of fast pyrolysis biorefineries with blended feedstocks and decentralized preprocessing sites in the Southeastern United States},
author = {Lan, Kai and Park, Sunkyu and Kelley, Stephen S. and English, Burton C. and Yu, Tun‐Hsiang E. and Larson, James and Yao, Yuan},
abstractNote = {This study performs techno-economic analysis and Monte Carlo simulations (MCS) to explore the effects that variations in biomass feedstock quality have on the economic feasibility of fast pyrolysis biorefineries using decentralized preprocessing sites (i.e., depots that produce pellets). Two biomass resources in the Southeastern United States, that is, pine residues and switchgrass, were examined as feedstocks. A scenario analysis was conducted for an array of different combinations, including different pellet ash control levels, feedstock blending ratios, different biorefinery capacities, and different biorefinery on-stream capacities, followed by a comparison with the traditional centralized system. MCS results show that, with depot preprocessing, variations in the feedstock moisture and feedstock ash content can be significantly reduced compared with a traditional centralized system. For a biorefinery operating at 100% of its designed capacity, the minimum fuel selling price (MFSP) of the decentralized system is 3.97–4.39 per gallon gasoline equivalent (GGE) based on the mean value across all scenarios, whereas the mean MFSP for the traditional centralized system was 3.79–4.12/GGE. To understand the potential benefits of highly flowable pellets in decreasing biorefinery downtime due to feedstock handling and plugging problems, this study also compares the MFSP of the decentralized system at 90% of its designed capacity with a traditional system at 80%. The analysis illustrates that using low ash pellets mixed with switchgrass and pine residues generates a more competitive MFSP. Specifically, for a biorefinery designed for 2,000 oven dry metric ton per day, running a blended pellet made from 75% switchgrass and 25% pine residues with 2% ash level, and operating at 90% of designed capacity could make an MFSP between 4.49 and 4.71/GGE. In contrast, a traditional centralized biorefinery operating at 80% of designed capacity marks an MFSP between 4.72 and 5.28.},
doi = {10.1111/gcbb.12752},
journal = {Global Change Biology. Bioenergy},
number = 11,
volume = 12,
place = {United Kingdom},
year = {2020},
month = {9}
}

Journal Article:
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https://doi.org/10.1111/gcbb.12752

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