Biomass Pyrolysis in Conical Spouted Bed Reactor CFD Simulation, ANSYS Fluent Training

Biomass Pyrolysis in Conical Spouted Bed Reactor CFD Simulation, ANSYS Fluent Training

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  • Upon ordering this product, you will be provided with a geometry file, a mesh file, and an in-depth Training Video that offers a step-by-step training on the simulation process.
  • For any more inquiries regarding the product, please do not hesitate to reach out to us at info@CFDLAND.com or through our online support assistant.

Original price was: €195.00.Current price is: €150.00.

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Description

The reactor’s conical shape promotes efficient heat transfer and mixing, resulting in homogeneous temperature distribution throughout the biomass feedstock. The spouted bed configuration improves particle circulation, resulting in faster pyrolysis processes and shorter biomass residence time within the reactor. This produces higher product yields and quality than typical pyrolysis processes.

This project has tried to simulate biomass pyrolysis in a conical spouted bed reaction using ANSYS Fluent software. Regarding the difficulties through the project, a valuable reference paper entitled “CFD modeling and experimental validation of biomass fast pyrolysis in a conical spouted bed reactor [1]” was chosen to take some information.

  • Reference [1]: Hooshdaran, Bahar, et al. “CFD modeling and experimental validation of biomass fast pyrolysis in a conical spouted bed reactor.” Journal of Analytical and Applied Pyrolysis154 (2021): 105011.

Biomass Pyrolysis in Conical Spouted Bed Reactor CFD Simulation

Figure 1: Spouted bed geometry and boundary conditions.

Simulation Process

In the primary phase of the project, 2D geometry is designed with blocking for later steps in mind. The blockings allow us to perform a high-quality structured grid in ANSYS Meshing.

The most challenging part of the project is dedicated to solver settings. The biomass pyrolysis is happening over time, so it is a Transient (Unsteady) study.The Eulerian multiphase model is employed to model both phases. One is gas phase and the other one is the biomass bed that is modeled considering granular. There are several key factors related to granular properties that affects the simulation. It is already mentioned that these parameters are taken from reference paper. Futher, Species Transport module models volumetric reactions.

 

Post-processing

The CFD simulations of the biomass pyrolysis process in a conical spouted bed reactor show that the flow dynamics are very complex, with speeds range from 0 to 10.6 m/s. The conical shape creates a unique spouting pattern, with peak speeds concentrating in the central spout area. This makes for an effective particle circulation loop. This structure of the flow is very important for the pyrolysis process because it makes sure that the biomass particles and the hot gas phase come into touch with each other properly. The velocity gradient visualization clearly separates the high-speed spout core from the annular region around it. Particles in this region move more slowly downward along the reactor walls, creating the classic spouted bed hydrodynamics needed for biomass conversion to work.

Figure 2: Sand volume fraction inside Biomass Pyrolysis in Conical Spouted Bed Reactor [1]

Biomass Pyrolysis in Conical Spouted Bed Reactor CFD Simulation, ANSYS Fluent Training

Figure 3: Velocity field inside Biomass Pyrolysis in Conical Spouted Bed Reactor

The range of temperatures, from 372K to 729K, shows how well the reactor transfers heat to keep the right conditions for pyrolysis. The contour plot clearly shows a pattern of thermal stratification, with the hottest areas being in the upper part of the reactor and controlled temperature zones in the reaction zone. This temperature profile, along with the Eulerian multiphase model that takes into account how gases and solids interact, makes the complicated set of pyrolysis reactions easier to understand. The species transport module records the granular flow features, which show good mixing patterns that help even out the heat and keep the rates of biomass breakdown steady. The simulation’s transient nature accurately depicts how the pyrolysis process changes over time. This proves that the reactor’s design is good for turning waste into useful bioenergy products.


FAQ

We pride ourselves on presenting unique products at CFDLAND. We stand out for our scientific rigor and validity. Our products are not based on guesswork or theoretical assumptions like many others. Instead, most of our products are validated using experimental or numerical data from valued scientific journals. Even if direct validation isn’t possible, we build our models and assumptions on the latest research, typically using reference articles to approximate reality.

Yes, we’ll be here . If you have trouble loading files, having technical problems, or have any questions about how to use our products, our technical support team is here to help.

You can load geometry and mesh files, as well as case and data files, using any version of ANSYS Fluent.

Reviews

1 review for Biomass Pyrolysis in Conical Spouted Bed Reactor CFD Simulation, ANSYS Fluent Training

  1. Rated 5 out of 5

    faezenobakht

    great

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Original price was: €195.00.Current price is: €150.00.