Exergy Assessment of the Allothermal Gasification of Maize Cobs in a Concentric Tube Fixed-Bed Reactor
An exergy analysis of maize cob gasification in a concentric tube fixed-bed reactor was conducted to define the relationship between biomass in the combustion and gasification zones. Biomass exergy was estimated based on its elemental composition, and syngas was treated as an ideal gas. The results...
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2025-01-01
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| author | Jesús D. Rhenals-Julio Jorge M. Mendoza Andrés F. Jaramillo Alexis Sagastume Gutiérrez Antonio Bula Silvera |
| author_facet | Jesús D. Rhenals-Julio Jorge M. Mendoza Andrés F. Jaramillo Alexis Sagastume Gutiérrez Antonio Bula Silvera |
| author_sort | Jesús D. Rhenals-Julio |
| collection | DOAJ |
| description | An exergy analysis of maize cob gasification in a concentric tube fixed-bed reactor was conducted to define the relationship between biomass in the combustion and gasification zones. Biomass exergy was estimated based on its elemental composition, and syngas was treated as an ideal gas. The results show a linear correlation between temperature and the mass ratio in both the combustion and gasification zones. The optimum exergy efficiency was 68.2% at a mass ratio of 2. Most irreversibilities were found in the combustion zone, with 42.9 kJ/kg destroyed, compared to 33.7 kJ/kg in the gasification zone. It is concluded that the allothermal gasification of biomass in two-zone gasifiers with concentric tubes improves the syngas LHV, demonstrating good reactor performance. |
| format | Article |
| id | doaj-art-94c667ba095646ae9fd2aee108adf67f |
| institution | OA Journals |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-94c667ba095646ae9fd2aee108adf67f2025-08-20T02:12:41ZengMDPI AGEnergies1996-10732025-01-0118360610.3390/en18030606Exergy Assessment of the Allothermal Gasification of Maize Cobs in a Concentric Tube Fixed-Bed ReactorJesús D. Rhenals-Julio0Jorge M. Mendoza1Andrés F. Jaramillo2Alexis Sagastume Gutiérrez3Antonio Bula Silvera4Departamento de Ingeniería Mecánica, Universidad de Córdoba, Cr 6 # 76-103, Montería 230002, ColombiaDepartamento de Ingeniería Mecánica, Universidad de Córdoba, Cr 6 # 76-103, Montería 230002, ColombiaDepartamento de Ingeniería Mecánica, Universidad de Córdoba, Cr 6 # 76-103, Montería 230002, ColombiaDepartment of Civil Engineering, Facultad de Estudios a Distancia, Universidad Militar Nueva Granada, Cajicá 250247, ColombiaDepartment of Mechanical Engineering, Universidad del Norte, Km. 5 Vía Puerto Colombia, Barranquilla 081007, ColombiaAn exergy analysis of maize cob gasification in a concentric tube fixed-bed reactor was conducted to define the relationship between biomass in the combustion and gasification zones. Biomass exergy was estimated based on its elemental composition, and syngas was treated as an ideal gas. The results show a linear correlation between temperature and the mass ratio in both the combustion and gasification zones. The optimum exergy efficiency was 68.2% at a mass ratio of 2. Most irreversibilities were found in the combustion zone, with 42.9 kJ/kg destroyed, compared to 33.7 kJ/kg in the gasification zone. It is concluded that the allothermal gasification of biomass in two-zone gasifiers with concentric tubes improves the syngas LHV, demonstrating good reactor performance.https://www.mdpi.com/1996-1073/18/3/606allothermal gasificationexergy efficiencyconcentric tube reactor |
| spellingShingle | Jesús D. Rhenals-Julio Jorge M. Mendoza Andrés F. Jaramillo Alexis Sagastume Gutiérrez Antonio Bula Silvera Exergy Assessment of the Allothermal Gasification of Maize Cobs in a Concentric Tube Fixed-Bed Reactor Energies allothermal gasification exergy efficiency concentric tube reactor |
| title | Exergy Assessment of the Allothermal Gasification of Maize Cobs in a Concentric Tube Fixed-Bed Reactor |
| title_full | Exergy Assessment of the Allothermal Gasification of Maize Cobs in a Concentric Tube Fixed-Bed Reactor |
| title_fullStr | Exergy Assessment of the Allothermal Gasification of Maize Cobs in a Concentric Tube Fixed-Bed Reactor |
| title_full_unstemmed | Exergy Assessment of the Allothermal Gasification of Maize Cobs in a Concentric Tube Fixed-Bed Reactor |
| title_short | Exergy Assessment of the Allothermal Gasification of Maize Cobs in a Concentric Tube Fixed-Bed Reactor |
| title_sort | exergy assessment of the allothermal gasification of maize cobs in a concentric tube fixed bed reactor |
| topic | allothermal gasification exergy efficiency concentric tube reactor |
| url | https://www.mdpi.com/1996-1073/18/3/606 |
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