Conversion analysis of a cylindrical biomass particle with a DEM-CFD coupling approach

Mohseni, Mohammad; Peters, Bernhard; Baniasadi, Mehdi

doi:10.1016/j.csite.2017.08.004

Cited by 31 publications

(11 citation statements)

References 29 publications

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“…Moreover, the OH and CH bands (3400–3200 cm −1 and 2950–2800 cm −1 , respectively) are related to all constituents (cellulose, hemicellulose, and lignin); it is difficult to associate these changes to a particular constituent. However, the TLUD gasification process reaches temperatures higher than 700°C and solid residence times of 10–20 s . Thereby, the high mass loss is due to the thermal decomposition of the hemicellulose and cellulose; this is in agreement with Figure , which shows the reduction of the H:C and O:C ratios due to devolatilization in the process.…”

Section: Resultssupporting

confidence: 82%

Effects of wood biomass type and airflow rate on fuel and soil amendment properties of biochar produced in a top‐lit updraft gasifier

Díez

Pérez

2018

Env Prog and Sustain Energy

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In this study, the effects of biomass type and airflow rate on the fuel and soil amendment properties of a solid byproduct (biochar, BC) produced by gasification in a top‐lit updraft reactor are studied. The results indicate that biomass with the highest fuel value index produces BC with the highest quality as a solid fuel. The best properties as a soil amendment are reached by Gua‐30‐BC as follows: the cation‐exchange capacity (CEC) of 18.6 meq/100 g, the water holding capacity (WHC) of 438%, and the total oxidizable organic carbon (TOC) of 14.2%. When the airflow increases from 20 to 40 L/min, the properties of pine BC as a solid fuel are affected. An increase in the gasification temperature leads to a diminished bulk density. Moreover, the ash content increases affecting the heating value of BC, which decreases from 27.71 to 25.5 MJ/kg. The best properties of BC as a solid fuel are reached at 20 L/min. The properties of BC as a soil amendment are affected with increased airflow as follows: the CEC decreases by 22.8%, TOC increases by 232.3%, and WHC increases by 7.6%. The best properties of BC as a soil amendment are obtained at 40 L/min. © 2018 American Institute of Chemical Engineers Environ Prog, 38:e13105, 2019

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Section: Resultssupporting

confidence: 82%

Effects of wood biomass type and airflow rate on fuel and soil amendment properties of biochar produced in a top‐lit updraft gasifier

Díez

Pérez

2018

Env Prog and Sustain Energy

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“…The error could be due to the difference in the packing structure. Despite this shortness, the XDEM method is still a reliable methods since it can also be applied to the cases with different particle sizes and also can treat nonspherical particles such as cylinders . For simplicity, the authors have started with spherical particles with constant particle diameters based on the experimental studies and considering other particle configurations are the aim of future contributions.…”

Section: Resultsmentioning

confidence: 99%

Resolving Multiphase Flow through Packed Bed of Solid Particles Using eXtended Discrete Element Method with Porosity Calculation

Baniasadi

Peters

2017

Ind. Eng. Chem. Res.

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Multiphase flow reactors such as trickle bed reactors are frequently used reactors in many industries. Understanding the fluid dynamics of these kinds of reactors is necessary to design and optimize them. The pressure drop and liquid saturation are the most important hydrodynamic parameters in these reactors, which depend highly on the porosity distribution inside the bed. The eXtended Discrete Element Method (XDEM) was applied as a numerical approach to model multiphase flow through packed beds of solid particles. This method has the ability to be coupled with Computational Fluid Dynamics (CFD) through interphase momentum transfer which makes it suitable for many Eulerian− Lagrangian systems. The XDEM also calculates the porosity distribution along the bed, which not only eliminates the empirical correlations but also makes it possible to investigate the maldistribution of liquid saturation inside the bed. The results for the hydrodynamics parameters were compared with experimental data, and satisfactory agreement was achieved.

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“…Also char is oxidized at high temperature above 700 • C denoting the combustion process when the solid char reacts with oxygen. [185] Here the XDEM-suite is applied to validate the drying of a single particle with the experiment carried out by Looi et al [186]. The particle is considered as a spherical wet particle including 60 % of moisture content and diameters In case A, the temperature rises from saturation after 20 s while in case B it rises after 27 s which states that the small particle is dried faster.…”

Section: Thermal Treatment Of Biomassmentioning

confidence: 99%

XDEM multi-physics and multi-scale simulation technology: Review of DEM–CFD coupling, methodology and engineering applications

Peters

Baniasadi

et al. 2019

Particuology

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The XDEM multi-physics and multi-scale simulation platform roots in the Extended Discrete Element Method (XDEM) and is being developed at the Institute of Computational Engineering at the University of Luxembourg. The platform is an advanced multi-physics simulation technology that combines flexibility and versatility to establish the next generation of multi-physics and multi-scale simulation tools. For this purpose the simulation framework relies on coupling various predictive tools based on both an Eulerian and Lagrangian approach. Eulerian approaches represent the wide field of continuum models while the Lagrange approach is perfectly suited to characterise discrete phases.Thus, continuum models include classical simulation tools such as Computational Fluid Dynamics (CFD) or Finite Element Analysis (FEA) while an extended configuration of the classical Discrete Element Method (DEM) addresses the discrete e.g. particulate phase. Apart from predicting the trajectories of individual particles, XDEM extends the application to estimating the thermodynamic state of each particle by advanced and optimised algorithms. The thermodynamic state may include temperature and species distributions due to chemical reaction and external heat sources. Hence, coupling these extended features with either CFD or FEA opens up a wide range of applications as di-verse as pharmaceutical industry e.g. drug production, agriculture food and processing industry, mining, construction and agricultural machinery, metals manufacturing, energy production and systems biology.

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Conversion analysis of a cylindrical biomass particle with a DEM-CFD coupling approach

Cited by 31 publications

References 29 publications

Effects of wood biomass type and airflow rate on fuel and soil amendment properties of biochar produced in a top‐lit updraft gasifier

Effects of wood biomass type and airflow rate on fuel and soil amendment properties of biochar produced in a top‐lit updraft gasifier

Resolving Multiphase Flow through Packed Bed of Solid Particles Using eXtended Discrete Element Method with Porosity Calculation

XDEM multi-physics and multi-scale simulation technology: Review of DEM–CFD coupling, methodology and engineering applications

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