Mathematical Modeling of Multi-Phenomena Anisotropic Systems: Ejection of Primary Aerosols during the Fast Pyrolysis of Biomass

Sánchez, Mario A.; Maya, Juan C.; Chejne, Farid; Pecha, Brennan; Quinchía-Figueroa, Adriana M.

doi:10.3390/math12060925

Mathematical Modeling of Multi-Phenomena Anisotropic Systems: Ejection of Primary Aerosols during the Fast Pyrolysis of Biomass

Journal Article · Thu Mar 21 00:00:00 EDT 2024 · Mathematics

DOI:https://doi.org/10.3390/math12060925· OSTI ID:2344975

Sánchez, Mario A. ^[1]; Maya, Juan C. ^[2]; ^[2]; Pecha, Brennan ^[3]; Quinchía-Figueroa, Adriana M. ^[1]

Universidad EIA, Envigado (Colombia)
Universidad Nacional de Colombia Sede Medellín (Colombia)
National Renewable Energy Laboratory (NREL), Golden, CO (United States)

This study introduces a novel particle model for biomass fast pyrolysis, incorporating an anisotropic cylindrical particle to address mass and energy transport coupled with aerosol ejection, which previous models have overlooked. The main contribution lies in developing a model that considers aerosol generation in anisotropic cylindrical particles for the first time, addressing bubbling dynamics and bursting within the liquid phase. The population balance equation describes bubble dynamics and aerosol formation, capturing phenomena like nucleation, growth, coalescence, and bursting. The model employs the method of moments with bubble volume as an internal variable, substantially reducing computational costs by eliminating dependence on this variable. Results highlight the significant impact of anisotropy and particle size on aerosol ejection: smaller, less elongated particles experience faster heating, quicker conversion, and the increased accumulation of the liquid intermediate phase. Specifically, 1 mm diameter particles yield higher concentrations of metaplast and bio-oil aerosols, exceeding 15%, compared to concentrations below 11% for 3 mm particles. This model provides insights into aerosol structure (volume, surface area), aiding in understanding aerosol reactivity at the reactor scale.

View Accepted Manuscript (DOE)

Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 2344975

Report Number(s):: NREL/JA--2800-89766; MainId:90545; UUID:d2a4bc38-a9d2-432c-8d0d-d945f2e5197a; MainAdminId:72509

Journal Information:: Mathematics, Journal Name: Mathematics Journal Issue: 6 Vol. 12; ISSN 2227-7390

Publisher:: MDPICopyright Statement

Country of Publication:: United States

Language:: English

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
97MATHEMATICS AND COMPUTING
aerosols
biomass
liquid intermediate
population balance
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Mathematical Modeling of Multi-Phenomena Anisotropic Systems: Ejection of Primary Aerosols during the Fast Pyrolysis of Biomass

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