Startup Design of Biomass Gasification Reactors

https://doi.org/10.58571/CNCA.AMCA.2024.077

Resumen: As a fundamental step for open and closed-loop design and operation, the problem of designing the initial temperature profile for the startup operation of a spatially distributed throated gasifier (described by 10 to 20 nonlinear ordinary and partial differential equations) so that the high energetic yield steadystate is robustly reached is addressed. The problem is solved with efficient partial-to-ordinary differential equation discretization and approximation of the initial torch-induced temperature profile with a rectangular one with: (i) the same sensible heat content (area) as the torch one, and (ii) the pulse start-endheight triplet as design degree of freedom. A sampled search yields the start-end-height triplet that describes the experimental data and explains the manufacturer’s specifications and operation guide, systematizing (with scalability) the startup operation.

¿Cómo citar?

Santamaria Padilla, L., Alvarez Icaza, L. & Alvarez, J. (2024). Startup Design of Biomass Gasification Reactors. Memorias del Congreso Nacional de Control Automático 2024, pp. 451-456. https://doi.org/10.58571/CNCA.AMCA.2024.077

Palabras clave

throated gasifier, startup, transient behavior, initial conditions, methodology

• All Power Labs. (2024). All power labs. Retrieved June 5, 2024, from http://www.allpowerlabs.com/
• Badillo-Hernandez, U., Alvarez, J., & Alvarez-Icaza, L. (2019). Efficient modeling of the nonlinear dynamics of tubular heterogeneous reactors. Computers and Chemical Engineering, 123, 389–406. https://doi.org/10.1016/j.compchemeng.2019.01.018
• Boor, C. de. (2001). A Practical Guide to Splines – Revised Edition. In Springer-Verlag, New York (Vol. 115). Springer.
• Crank, J. (1979). The mathematics of diffusion. Oxford university press.
• Di Blasi, C., & Branca, C. (2013). Modeling a stratified downdraft wood gasifier with primary and secondary air entry. Fuel, 104, 847–860. https://doi.org/10.1016/j.fuel.2012.10.014
• Huchon, V., Pinta, F., Commandré, J. M., & van de Steene, L. (2020). How electrical engine power load and feedstock moisture content affect the performance of a fixed bed gasification genset. Energy, 197, 2–11. https://doi.org/10.1016/j.energy.2020.117144
• Hundsdorfer, W., & Verwer, J. G. (2003). Numerical Solution of Time-Dependent Advection-Diffusion-Reaction Equations. In SIAM Review (Vol. 33).
• Janajreh, I., & al Shrah, M. (2013). Numerical and experimental investigation of downdraft gasification of wood chips. Energy Conversion and Management, 65, 783–792. https://doi.org/10.1016/j.enconman.2012.03.009
• Pérez, J. F., Melgar, A., & Benjumea, P. N. (2012). Effect of operating and design parameters on the gasification/combustion process of waste biomass in fixed bed downdraft reactors: An experimental study. Fuel, 96, 487–496. https://doi.org/10.1016/j.fuel.2012.01.064
• Santamaria-Padilla, L., Alvarez-Icaza, L., & Alvarez, J. (2016). “Modelado con validación experimental de un gasificador de biomasa." Memorias del Congreso Nacional de Control Automático, Querétaro, Querétaro, México. 2016.
• Santamaria-Padilla, L., Badillo-Hernandez, U., Álvarez, J., & Álvarez-Icaza, L. (2022). On the nonlinear dynamics of biomass throated tubular gasification reactors. Computers & Chemical Engineering, 107828. https://doi.org/10.1016/j.compchemeng.2022.107828
• Susastriawan, A. A. P., Saptoadi, H., & Purnomo. (2017). Small-scale downdraft gasifiers for biomass gasification: A review. Renewable and Sustainable Energy Reviews, 76(March), 989–1003. https://doi.org/10.1016/j.rser.2017.03.112
• Yan, W. C., Shen, Y., You, S., Sim, S. H., Luo, Z. H., Tong, Y. W., & Wang, C. H. (2018). Model-based downdraft biomass gasifier operation and design for synthetic gas production. Journal of Cleaner Production, 178, 476– 493. https://doi.org/10.1016/j.jclepro.2018.01.009
• You, S., Sik Ok, Y., Chen, S. S., Tsang, D. C. W., Kwon, E. E., Lee, J., & Wang, C.-H. (2017). A critical review on sustainable biochar system through gasification: Energy and environmental applications. https://doi.org/10.1016/j.biortech.2017.06.177
• Yucel, O., & Hastaoglu, M. A. (2016). Kinetic modeling and simulation of throated downdraft gasifier. Fuel Processing Technology, 144, 145–154. https://doi.org/10.1016/j.fuproc.2015.12.023