Flash Pyrolysis of Oleaginous Biomass in a Fluidized-Bed Reactor
Abstract
In this study, flash pyrolysis was performed using milled soybean as a model substrate to assess the production of liquid fuels from oleaginous biomass feedstocks. A laboratory-scale fluidized-bed flash pyrolysis reactor that allowed rapid heat transfer to the biomass along with short vapor residence time was designed and constructed. Pyrolysis was performed between 250 and 610 °C with a vapor residence time between 0.2 and 0.3 s. At 550 °C or higher, nearly 70% of the initial feed mass as well as feed carbon was recovered in bio-oil. In addition, 90% of the feedstock lipids were recovered in the bio-oil at these pyrolysis conditions. The high liquid products yields were attributed to (1) the low secondary degradation of bio-oils due to the short vapor residence time and (2) the high recovery of liquids in a novel dry ice packed-bed condenser that provided a high surface area for condensation/aggregation of dilute bio-oil vapors/aerosols that were entrained in the carrier gas. The bio-oil from this study had higher C and H content, higher calorific value, and lower oxygen and water content than bio-oil from wood. Finally, these results show that high-quality bio-oil at high yield can be obtained from flash pyrolysis ofmore »
- Authors:
-
[2];
[1];
- Univ. of Toledo, OH (United States). Dept. of Chemical and Environmental Engineering
- Univ. of Toledo, OH (United States). Dept. of Chemical and Environmental Engineering; Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Publication Date:
- Research Org.:
- Univ. of Toledo, OH (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Bioenergy Technologies Office; National Science Foundation (NSF)
- OSTI Identifier:
- 1534485
- Grant/Contract Number:
- EE0005993; CHE-1230609
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Energy and Fuels
- Additional Journal Information:
- Journal Volume: 31; Journal Issue: 8; Journal ID: ISSN 0887-0624
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 09 BIOMASS FUELS; lipids; liquids; animal feed; biofuels; pyrolysis
Citation Formats
Urban, Brook, Shirazi, Yaser, Maddi, Balakrishna, Viamajala, Sridhar, and Varanasi, Sasidhar. Flash Pyrolysis of Oleaginous Biomass in a Fluidized-Bed Reactor. United States: N. p., 2017.
Web. doi:10.1021/acs.energyfuels.7b01306.
Urban, Brook, Shirazi, Yaser, Maddi, Balakrishna, Viamajala, Sridhar, & Varanasi, Sasidhar. Flash Pyrolysis of Oleaginous Biomass in a Fluidized-Bed Reactor. United States. https://doi.org/10.1021/acs.energyfuels.7b01306
Urban, Brook, Shirazi, Yaser, Maddi, Balakrishna, Viamajala, Sridhar, and Varanasi, Sasidhar. Thu .
"Flash Pyrolysis of Oleaginous Biomass in a Fluidized-Bed Reactor". United States. https://doi.org/10.1021/acs.energyfuels.7b01306. https://www.osti.gov/servlets/purl/1534485.
@article{osti_1534485,
title = {Flash Pyrolysis of Oleaginous Biomass in a Fluidized-Bed Reactor},
author = {Urban, Brook and Shirazi, Yaser and Maddi, Balakrishna and Viamajala, Sridhar and Varanasi, Sasidhar},
abstractNote = {In this study, flash pyrolysis was performed using milled soybean as a model substrate to assess the production of liquid fuels from oleaginous biomass feedstocks. A laboratory-scale fluidized-bed flash pyrolysis reactor that allowed rapid heat transfer to the biomass along with short vapor residence time was designed and constructed. Pyrolysis was performed between 250 and 610 °C with a vapor residence time between 0.2 and 0.3 s. At 550 °C or higher, nearly 70% of the initial feed mass as well as feed carbon was recovered in bio-oil. In addition, 90% of the feedstock lipids were recovered in the bio-oil at these pyrolysis conditions. The high liquid products yields were attributed to (1) the low secondary degradation of bio-oils due to the short vapor residence time and (2) the high recovery of liquids in a novel dry ice packed-bed condenser that provided a high surface area for condensation/aggregation of dilute bio-oil vapors/aerosols that were entrained in the carrier gas. The bio-oil from this study had higher C and H content, higher calorific value, and lower oxygen and water content than bio-oil from wood. Finally, these results show that high-quality bio-oil at high yield can be obtained from flash pyrolysis of oleaginous feedstock.},
doi = {10.1021/acs.energyfuels.7b01306},
journal = {Energy and Fuels},
number = 8,
volume = 31,
place = {United States},
year = {Thu Jul 20 00:00:00 EDT 2017},
month = {Thu Jul 20 00:00:00 EDT 2017}
}
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Figures / Tables:
Figure 1: Schematic diagram of flash fluidized-bed pyrolysis. The dashed blocks represents feed, reactor and condenser sections. 1: feed hopper, 2: venture, 3: 1'' reactor, 4: expander, 5: 3'' disengagement chamber, 6: thermocouple, 7: Allihn condensers, 8: bio-oil liquid trap, 9: dry ice packed-bed condenser. The scaled drawing of themore »
Figures / Tables found in this record: