Design and Development of Hydrothermal Carbonization Reactor
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Abstract
This project presents the design, development, and evaluation of a hydrothermal carbonization (HTC) reactor for the conversion of biomass into carbon-rich hydrochar. The reactor was designed to operate under subcritical water conditions with controlled temperature and voltage inputs. Experimental tests were conducted at three voltage levels (185V, 210V, and 220V) and target operating temperatures of 180°C, 200°C, and 220°C. The results showed that heating rate and energy efficiency were directly influenced by voltage level. At higher voltages, the reactor attained the set temperatures in shorter times, with 220V achieving 220°C in 37 minutes compared to 44 minutes at 185V. The evaluation confirmed a linear correlation between temperature and time for all test conditions. The developed reactor demonstrates the potential for efficient thermal processing of wet biomass without prior drying, offering a sustainable pathway for waste-to-energy conversion. The study provides a foundation for further optimization of HTC reactor designs to enhance efficiency and scalability for industrial applications.
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References
Ho, T. T.-T., Nadeem, A., & Choe, K. (2024). A review of upscaling hydrothermal carbonization. Energies, 17(8), 1918. https://doi.org/10.3390/en17081918
Merzari, F., Lucian, M., Volpe, M., Andreottola, G., & Fiori, L. (2018). Hydrothermal carbonization of biomass: Design of a bench-scale reactor for evaluating the heat of reaction. Chemical Engineering Transactions, 65, 43–48. https://doi.org/10.3303/CET1865008
Obi, O. F., Olugbade, T. O., Orisaleye, J. I., & Pecenka, R. (2023). Solid biofuel production from biomass: Technologies, challenges, and opportunities for its commercial production in Nigeria. Energies, 16(24), 7966. https://doi.org/10.3390/en16247966
Reza, M. T., Andert, J., Herklotz, B., Busch, D., & et al. (2014). Review article: Hydrothermal carbonization of biomass for energy and crop production. Applied Bioenergy, 1(1), 11–29. https://doi.org/10.2478/apbi-2014-0001
Umar, Y., Yakubu, R. O., Abdulazeez, A. A., & Ijeoma, M. W. (2024). Exploring Nigeria’s waste-to-energy potential: A sustainable solution for electricity generation. Clean Energy, 8(6), 82–95. https://doi.org/10.1093/ce/zkae080
Wang, T., Zhai, Y., Zhu, Y., Li, C., & Zeng, G. (2018). A review of the hydrothermal carbonization of biomass waste for hydrochar formation: Process conditions, fundamentals, and physicochemical properties. Renewable and Sustainable Energy Reviews, 90, 223–247. https://doi.org/10.1016/j.rser.2018.03.071
Berge, N. D., Ro, K. S., Mao, J., Flora, J. R., Chappell, M. A., & Bae, S. (2011). Hydrothermal carbonization of municipal waste streams. Environmental Science & Technology, 45(13), 5696–5703. https://doi.org/10.1021/es2004528
Funke, A., & Ziegler, F. (2010). Hydrothermal carbonization of biomass: A summary and discussion of chemical mechanisms for process engineering. Biofuels, Bioproducts and Biorefining, 4(2), 160–177. https://doi.org/10.1002/bbb.198
He, C., Giannis, A., & Wang, J. Y. (2018). Conversion of sewage sludge to clean solid fuel using hydrothermal carbonization: Hydrochar fuel characteristics and combustion behavior. Applied Energy, 111, 257–266. https://doi.org/10.1016/j.apenergy.2013.04.084
Kambo, H. S., & Dutta, A. (2015). A comparative review of biochar and hydrochar in terms of production, physico-chemical properties and applications. Renewable and Sustainable Energy Reviews, 45, 359–378. https://doi.org/10.1016/j.rser.2015.01.050
Kruse, A., Funke, A., & Titirici, M. M. (2013). Hydrothermal conversion of biomass to fuels and energetic materials. Current Opinion in Chemical Biology, 17(3), 515–521. https://doi.org/10.1016/j.cbpa.2013.05.004
Libra, J. A., Ro, K. S., Kammann, C., Funke, A., Berge, N. D., Neubauer, Y., Titirici, M. M., Fühner, C., Bens, O., Kern, J., & Emmerich, K. H. (2011). Hydrothermal carbonization of biomass residuals: A comparative review of the chemistry, processes and applications of wet and dry pyrolysis. Biofuels, 2(1), 71–106. https://doi.org/10.4155/bfs.10.81
Nwoke, G. O., Abam, F. I., & Mbohwa, C. (2021). Hydrothermal carbonization of biomass for energy generation in Sub-Saharan Africa: Potential, challenges, and prospects. Energy Reports, 7, 7743–7753. https://doi.org/10.1016/j.egyr.2021.01.036
Obi, O. F., Ugwuishiwu, B. O., & Ekoh, D. A. (2022). Thermal and fuel characteristics of hydrochar produced from palm kernel shell using hydrothermal carbonization. Renewable Energy Focus, 40, 1–10. https://doi.org/10.1016/j.ref.2022.04.008
Pandey, A., Ojha, A., & Kumar, R. (2017). Design and development of semi-continuous hydrothermal carbonization reactor for energy recovery from urban food waste. Renewable Energy, 113, 1240–1247. https://doi.org/10.1016/j.renene.2017.06.069
Reza, M. T., Rottler, E., Herklotz, L., Wirth, B., & Lehmann, F. (2014). Influence of hydrothermal carbonization on fuel properties of sewage sludge. Fuel, 140, 107–115. https://doi.org/10.1016/j.fuel.2014.09.032
Sevilla, M., & Fuertes, A. B. (2009). The production of carbon materials by hydrothermal carbonization of cellulose. Carbon, 47(9), 2281–2289. https://doi.org/10.1016/j.carbon.2009.04.026
Shen, Y., Linville, J. L., Urgun-Demirtas, M., Mintz, M. M., & Snyder, S. W. (2015). Heating up the biorefinery? Energetic and environmental challenges in scaling up hydrothermal carbonization of organic waste. Journal of Cleaner Production, 93, 318–326. https://doi.org/10.1016/j.jclepro.2015.01.009
Wang, T., Zhai, Y., Zhu, Y., Li, C., Zeng, G., & Liu, Y. (2018). A review of the hydrothermal carbonization of biomass waste for hydrochar formation: Process conditions, fundamentals, and physicochemical properties. Renewable and Sustainable Energy Reviews, 90, 223–247. https://doi.org/10.1016/j.rser.2018.03.071
Yahya, A., Johari, A., & Hashim, H. (2018). Hydrothermal carbonization of biomass for energy and resources recovery: A review. Renewable and Sustainable Energy Reviews, 90, 583–604. https://doi.org/10.1016/j.rser.2018.03.072
Zhang, L., Xu, C., & Champagne, P. (2019). Overview of recent advances in thermochemical conversion of biomass into biofuels. Bioresource Technology, 183, 1–15. https://doi.org/10.1016/j.biortech.2013.06.091
Ezenwa, O. N., Mgbemena, C. O., & Emagbeterre, E. (2023). Design and construction of a continuous stirring hydrothermal liquefaction batch reactor. Tuijin Jishu/Journal of Propulsion Technology, 44(3), 2021–2031. https://doi.org/10.52783/tjjpt.v44.i3.635