Gasification of coal, Chenopodium Album biomass, and co-gasification of a coal-biomass mixture by thermogravimetric-gas analysis
| Autor: | Eduardo Gil-Lancheros, Carlos Francisco Valdés-Rentería, Marley Cecilia Vanegas-Chamorro, Marco Antonio Ardila-Barragán, Luis Fernando Lozano-Gómez, Brennan Pecha, J. E. Camporredondo-Saucedo, Alfonso López-Díaz |
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| Rok vydání: | 2019 |
| Předmět: |
agglomerated mixtures
Thermogravimetric analysis synergy chemistry.chemical_element Biomass complex mixtures otorhinolaryngologic diseases Gas analysis Coal coal-biomass biology business.industry Chenopodium technology industry and agriculture General Medicine respiratory system chenopodium album syngas biology.organism_classification co-gasification respiratory tract diseases chemistry lcsh:TA1-2040 lcsh:Engineering (General). Civil engineering (General) business Carbon Syngas Nuclear chemistry |
| Zdroj: | Revista Facultad de Ingeniería, Vol 28, Iss 53, Pp 53-77 (2019) |
| ISSN: | 2357-5328 0121-1129 |
| DOI: | 10.19053/01211129.v28.n53.2019.10147 |
| Popis: | espanolSe llevaron a cabo estudios de gasificacion con carbon subituminoso de la provincia Centro del departamento de Boyaca (Colombia), biomasa vegetal de Chenopodium album (cenizo) y de cogasificacion de mezclas de carbon-biomasa, aglomerada con parafina en un analizador termogravimetrico. Se observo que la biomasa promovio sinergeticamente la transformacion termoquimica del carbon. Los resultados experimentales fueron comparados con simulaciones de la composicion de equilibrio. Se realizaron pruebas de fusibilidad de cenizas de la mezcla carbon-biomasa, que permitieron determinar si se comportarian como cenizas secas o fluidas durante el proceso de gasificacion, de acuerdo con la composicion quimica. A partir de la experimentacion fue posible establecer diferencias entre la descomposicion termica del carbon, el cenizo y la mezcla de carbon-biomasa, las cuales son atribuibles a las propiedades fisicoquimicas de cada combustible solido. Para precisar la composicion del syngas producido durante las pruebas, se hicieron analisis de cromatografia de gases. El syngas obtenido a partir de la biomasa tuvo la concentracion mas alta de CO y la mas baja de H2; el carbon y la mezcla carbon-biomasa tuvieron concentraciones ligeramente menores. Las concentraciones de CH4, CO2 y C2H4 fueron similares entre el carbon y la biomasa. Este resultado es consistente con el valor calorifico alto del syngas obtenido a partir del carbon. La produccion del syngas de la mezcla carbon-biomasa presento los valores mas bajos en los contenidos de H2 y CO, debido al fenomeno sinergetico que ocurre con la mezcla del combustible. La cogasificacion de la mezcla carbon-biomasa dio la mayor produccion de gas, de eficiencia en la conversion de carbon y de eficiencia termica. Estos resultados indican la viabilidad del proceso de cogasificacion de mezclas aglomeradas de carbon con Chenopodium album. En gasificacion de mezclas no aglomeradas de carbon-cenizo, la biomasa puede quemarse directamente sin producir syngas. EnglishGasification studies were performed on sub-bituminous coal of the province Centro in Boyaca state of Colombia, vegetable biomass Chenopodium album (cenizo) and co-gasification of coal-biomass mixtures agglomerated with paraffin in a thermogravimetric analyzer. Biomass synergistically promoted thermochemical transformation of the coal was observed. Experimental results were compared to equilibrium composition simulations. Ash fusibility tests of the coal-biomass mixture were carried out, which allowed to clarify its behavior, such as dry or fluid ash according to own chemical composition, during the gasification process. The experimental tests allowed determining the differences in thermal decomposition, between coal, cenizo and coal-biomass blend, which are attributable to the physicochemical properties of each one solid fuel. During the tests, gas chromatography analyses were performed to establish the compositions of the syngas. The syngas obtained from biomass had the highest concentration of CO and the lowest H2; the coal and the coal-biomass mixture were slightly minor respectively. Concentrations of CH4, CO2 and C2H4 were similar between coal and biomass. This result is consistent with the higher calorific value of the coal syngas. The production of syngas from the coal-biomass mixture had the lowest contents of H2 and CO due to synergistic phenomena that occur with the fuel mixture. The co-gasification of the mixture gave the highest syngas production, carbon conversion, and thermal efficiency. These results indicate the viability of co-gasification of coal-Chenopodium album agglomerated mixtures. In gasification of non-agglomerated mixtures of coal-cenizo, the biomass can be burned directly without producing syngas. |
| Databáze: | OpenAIRE |
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