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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1277| Thermodynamic and Kinetics Modeling of H2 Production by dry Reforming of Ethanol With CO2 Evolution | |
| ROXANA BERENICE PALLARES SAMANO MARIA DEL ROSARIO BARAY GUERRERO VANESSA GUADALUPE GUZMAN VELDERRAIN VIRGINIA HIDALINA COLLINS MARTINEZ ALEJANDRO LOPEZ ORTIZ | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| CO2 thermodynamic | |
| A viable alternative to fossil fuels is to make use of H2 from renewable sources as an energy carrier or as a clean fuel. Steam reforming of hydrocarbons is the conventional process to produce H2, with the drawbacks that presents low efficiency combined with high operational costs and CO2 being emitted into the atmosphere. An alternative to this process is the dry reforming of hydrocarbons, which employs CO2 to produce hydrogen-syngas and the use of ethanol as a renewable feedstock which would prevent CO2 emission into the atmosphere. One innovative approach is the use of a solid carbonate to serve as a source of CO2 for this process. Thus, exposing the solid carbonate to high temperatures (reaction temperature), this decomposes emitting CO2, which is used as raw material along with ethanol (EtOH) to produce hydrogen-synthesis gas. The present work aims to perform a thermodynamic and kinetic simulation study to explore reaction conditions close to equilibrium for a high syngas-H2 production, under the dry reforming of EtOH. CaCO3 was used as source of CO2 for the reaction system. The thermodynamic study was performed using the HSC software and the studied conditions were: T = 300-1000 °C, CaCO3/EtOH molar ratio = 1-3. Results showed that at T ≥ 755 °C and CaCO3/EtOH ≥ 2.2, a free carbon formation syngas is produced. Maximum H2 production was obtained at 855 °C and CaCO3/EtOH ≥ 2.2, while the highest concentration of H2 was produced at 755 °C. Furthermore, a process and kinetics simulations were performed through ASPEN-Plus and CKS, respectively and based on experimental data taken from the literature for the dry reforming of EtOH. Results indicate that at 900 ºC and CaCO3/EtOH = 2 ratio, the estimated value of H2 purity was very similar to that obtained by the thermodynamic equilibrium analysis. | |
| 2014 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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