Net energy ratio for the production of steam pretreated biomass-based pellets

Shahrukh, Hassan; Oyedun, Adetoyese Olajire; Kumar, Amit; Ghiasi, Bahman; Kumar, Linoj; Sokhansanj, Shahab

doi:10.1016/j.biombioe.2015.06.006

Title: Net energy ratio for the production of steam pretreated biomass-based pellets

Journal Article · Sun Jun 21 00:00:00 EDT 2015 · Biomass and Bioenergy

DOI:https://doi.org/10.1016/j.biombioe.2015.06.006· OSTI ID:1334452

Shahrukh, Hassan ^[1]; Oyedun, Adetoyese Olajire ^[1]; Kumar, Amit ^[1]; Ghiasi, Bahman ^[2]; Kumar, Linoj ^[2]; Sokhansanj, Shahab ^[3]

Univ. of Alberta, Edmonton, AB (Canada)
Univ. of British Columbia, Vancouver, BC (Canada)
Univ. of British Columbia, Vancouver, BC (Canada); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

In this study, a process model was developed to determine the net energy ratio (NER) for both regular and steam-pretreated pellet production from ligno-cellulosic biomass. NER is a ratio of the net energy output to the total net energy input from non-renewable energy source into the system. Scenarios were developed to measure the effect of temperature and level of steam pretreatment on the NER of both production processes. The NER for the base case at 6 kg h^–1 is 1.29 and 5.0 for steam-pretreated and regular pellet production respectively. However, at the large scale NER would improve. The major factor for NER is energy for steam and drying unit. The sensitivity analysis for the model shows that the optimum temperature for steam pretreatment is 200 °C with 50% pretreatment (Steam pretreating 50% feed stock, while the rest is undergoing regular pelletization). Uncertainty result for steam pretreated and regular pellet is 1.35 ± 0.09 and 4.52 ± 0.34 respectively.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1334452

Journal Information:: Biomass and Bioenergy, Vol. 80, Issue C; ISSN 0961-9534

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 17 works

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09 BIOMASS FUELS
biomass
pellets
process model
energy balance
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NER

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