Title: Assessment of a detailed biomass pyrolysis kinetic scheme in multiscale simulations of a single-particle pyrolyzer and a pilot-scale entrained flow pyrolyzer

Abstract

A detailed biomass pyrolysis kinetic scheme was assessed in the multiscale simulations of a single-particle pyrolyzer with slow pyrolysis and a pilot-scale entrained flow pyrolyzer with fast pyrolysis. The detailed kinetic scheme of biomass pyrolysis developed by the CRECK group consists of 32 reactions and 58 species. A multiscale simulation model was developed, where the CRECK kinetics was employed to simulate biomass pyrolysis reactions, a one-dimensional particle model was utilized to simulate the intraparticle transport phenomena, and the particle-in-cell (PIC) model was employed to simulate the hydrodynamics. The multiscale model was first applied to simulate a single-particle pyrolysis experiment. The simulation with nonisothermal particles matched the experimental data better than the simulation with isothermal particles. Then the multiscale model was applied to simulate the pilot-scale entrained flow pyrolyzer. In this case, the simulation with isothermal particles matched the experimental data better than the simulation with nonisothermal particles. The reason for this difference might be that the kinetics itself already partially included the intraparticle transport effect as it was fitted using both TGA data (slow pyrolysis of small size biomass) and fluidized bed data (fast pyrolysis of relatively large size biomass). This study provides some insights into biomass pyrolysis kinetics developmentmore » and pyrolyzer multiscale simulation for a future study.« less

Authors:

Gao, Xi ^[1]; Lu, Liqiang ^[1]; Shahnam, Mehrdad ^[2]; Rogers, William A. ^[2]; Smith, Kristin ^[3]; Gaston, Katherine ^[3]; Robichaud, David ^[3]; Brennan Pecha, M. ^[3]; Crowley, Meagan ^[3]; Ciesielski, Peter N. ^[3]; Debiagi, Paulo ^[4]; Faravelli, Tiziano ^[5]; Wiggins, Gavin ^[6]; Finney, Charles E.A. ^[6]; Parks, James E. ^[6]

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+ Show Author Affiliations

1. National Energy Technology Lab. (NETL), Morgantown, WV (United States); Leidos Research Support Team, Morgantown, WV (United States)
2. National Energy Technology Lab. (NETL), Morgantown, WV (United States)
3. National Renewable Energy Lab. (NREL), Golden, CO (United States)
4. Technical Univ. of Darmstadt (Germany)
5. Politecnico di Milano (Italy)
6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:

Sun Mar 14 00:00:00 EST 2021

Research Org.:

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States); National Renewable Energy Lab. (NREL), Golden, CO (United States)

Sponsoring Org.:

USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Bioenergy Technologies Office; German Research Foundation (DFG); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Bioenergy Technologies Office; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office

OSTI Identifier:

1842492

Alternate Identifier(s):

OSTI ID: 1774877; OSTI ID: 1814352; OSTI ID: 1815339

Report Number(s):

NREL/JA-2800-78573
Journal ID: ISSN 1385-8947

Grant/Contract Number:  

AC05-00OR22725; 89243318CFE000003; AC36-08GO28308; 215035359-TRR-29

Resource Type:

Accepted Manuscript

Journal Name:

Chemical Engineering Journal

Additional Journal Information:

Journal Volume: 418; Journal Issue: NA; Journal ID: ISSN 1385-8947

Publisher:

Elsevier

Country of Publication:

United States

Language:

English

Subject:

09 BIOMASS FUELS; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 42 ENGINEERING; biomass; pyrolysis; kinetics; multiscale; CFD; MFiX; 29 EE - Bioenergy Technologies Office (EE-3B); reactor modeling