MEJORA ENERGÉTICA DE LA BIOMASA LIGNOCELULÓSICA MEDIANTE TRATAMIENTOS TERMOQUÍMICOS
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2023-10-03
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Dávila-Majus, Gesler J.
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[es] Análisis comparativo de los tratamientos termoquímicos de torrefacción oxidativa y húmeda realizados a temperaturas de 200°C, 210°C, 215°C, 220°C, 230°C, 240°C (torrefacción oxidativa) y 200°C, 220°C y 240°C (torrefacción húmeda) sobre la biomasa de los posos del café. El análisis de las muestras obtenidas permitió identificar la biomasa con mejores características químicas y mecánicas para su posterior aplicación energética. Las muestras de biomasa sometidas a torrefacción húmeda presentan valores más altos en poder calorífico y rendimientos energéticos, porcentajes de ceniza más bajos y un análisis químico con propiedades más cercanas a las de un carbón en el diagrama de Van Krevelen. En cuanto a las propiedades mecánicas, estas muestran mayor resistencia y estabilidad al ser pelletizadas, así como una mayor resistencia a la penetración del agua. Se comprueba que las muestras de torrefacción húmeda presentan mayor interés para su aplicación energética.
[en] Comparative analysis of thermochemical treatments: Oxidative Torrefaction at temperatures ranging from 200 °C, 210 °C, 215 °C, 220 °C, 230 °C, 240 °C vs. Wet Torrefaction at 200 °C, 220 °C, and 240 °C on Spent Coffee Ground Biomass. The analysis of the obtained samples enabled us to identify the biomass samples with the most favorable chemical and mechanical characteristics for subsequent energy applications. Biomass samples subjected to wet torrefaction demonstrated higher values in terms of Higher Calorific Value (HCV) and Lower Calorific Value (LCV), along with increased energy yield. Additionally, they exhibited lower ash percentages and a chemical composition more closely resembling that of coal, as indicated by the Van Krevelen diagram. In terms of mechanical properties, these samples displayed greater resistance and stability when pelletized, as well as enhanced resistance to water penetration. Consequently, it is evident that wet torrefaction samples hold greater promise for energy applications.
[en] Comparative analysis of thermochemical treatments: Oxidative Torrefaction at temperatures ranging from 200 °C, 210 °C, 215 °C, 220 °C, 230 °C, 240 °C vs. Wet Torrefaction at 200 °C, 220 °C, and 240 °C on Spent Coffee Ground Biomass. The analysis of the obtained samples enabled us to identify the biomass samples with the most favorable chemical and mechanical characteristics for subsequent energy applications. Biomass samples subjected to wet torrefaction demonstrated higher values in terms of Higher Calorific Value (HCV) and Lower Calorific Value (LCV), along with increased energy yield. Additionally, they exhibited lower ash percentages and a chemical composition more closely resembling that of coal, as indicated by the Van Krevelen diagram. In terms of mechanical properties, these samples displayed greater resistance and stability when pelletized, as well as enhanced resistance to water penetration. Consequently, it is evident that wet torrefaction samples hold greater promise for energy applications.