Thermodynamics Analysis of Refinery Sludge Gasification in Adiabatic Updraft Gasifier
Limited information is available about the thermodynamic evaluation for biomass gasification process using updraft gasifier. Therefore, to minimize errors, the gasification of dry refinery sludge (DRS) is carried out in adiabatic system at atmospheric pressure under ambient air conditions. The objec...
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/758137 |
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| author | Reem Ahmed Chandra M. Sinnathambi Usama Eldmerdash Duvvuri Subbarao |
| author_facet | Reem Ahmed Chandra M. Sinnathambi Usama Eldmerdash Duvvuri Subbarao |
| author_sort | Reem Ahmed |
| collection | DOAJ |
| description | Limited information is available about the thermodynamic evaluation for biomass gasification process using updraft gasifier. Therefore, to minimize errors, the gasification of dry refinery sludge (DRS) is carried out in adiabatic system at atmospheric pressure under ambient air conditions. The objectives of this paper are to investigate the physical and chemical energy and exergy of product gas at different equivalent ratios (ER). It will also be used to determine whether the cold gas, exergy, and energy efficiencies of gases may be maximized by using secondary air injected to gasification zone under various ratios (0, 0.5, 1, and 1.5) at optimum ER of 0.195. From the results obtained, it is indicated that the chemical energy and exergy of producer gas are magnified by 5 and 10 times higher than their corresponding physical values, respectively. The cold gas, energy, and exergy efficiencies of DRS gasification are in the ranges of 22.9–55.5%, 43.7–72.4%, and 42.5–50.4%, respectively. Initially, all 3 efficiencies increase until they reach a maximum at the optimum ER of 0.195; thereafter, they decline with further increase in ER values. The injection of secondary air to gasification zone is also found to increase the cold gas, energy, and exergy efficiencies. A ratio of secondary air to primary air of 0.5 is found to be the optimum ratio for all 3 efficiencies to reach the maximum values. |
| format | Article |
| id | doaj-art-c7aa61e7e0ac464eafd071137f3685f7 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-c7aa61e7e0ac464eafd071137f3685f72025-02-03T05:43:55ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/758137758137Thermodynamics Analysis of Refinery Sludge Gasification in Adiabatic Updraft GasifierReem Ahmed0Chandra M. Sinnathambi1Usama Eldmerdash2Duvvuri Subbarao3Department of Chemical Engineering, Universiti Teknologi PETRONAS, 31750 Tronoh, Perak, MalaysiaFundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, MalaysiaDepartment of Chemical Engineering, Universiti Teknologi PETRONAS, 31750 Tronoh, Perak, MalaysiaDepartment of Chemical Engineering, Universiti Teknologi PETRONAS, 31750 Tronoh, Perak, MalaysiaLimited information is available about the thermodynamic evaluation for biomass gasification process using updraft gasifier. Therefore, to minimize errors, the gasification of dry refinery sludge (DRS) is carried out in adiabatic system at atmospheric pressure under ambient air conditions. The objectives of this paper are to investigate the physical and chemical energy and exergy of product gas at different equivalent ratios (ER). It will also be used to determine whether the cold gas, exergy, and energy efficiencies of gases may be maximized by using secondary air injected to gasification zone under various ratios (0, 0.5, 1, and 1.5) at optimum ER of 0.195. From the results obtained, it is indicated that the chemical energy and exergy of producer gas are magnified by 5 and 10 times higher than their corresponding physical values, respectively. The cold gas, energy, and exergy efficiencies of DRS gasification are in the ranges of 22.9–55.5%, 43.7–72.4%, and 42.5–50.4%, respectively. Initially, all 3 efficiencies increase until they reach a maximum at the optimum ER of 0.195; thereafter, they decline with further increase in ER values. The injection of secondary air to gasification zone is also found to increase the cold gas, energy, and exergy efficiencies. A ratio of secondary air to primary air of 0.5 is found to be the optimum ratio for all 3 efficiencies to reach the maximum values.http://dx.doi.org/10.1155/2014/758137 |
| spellingShingle | Reem Ahmed Chandra M. Sinnathambi Usama Eldmerdash Duvvuri Subbarao Thermodynamics Analysis of Refinery Sludge Gasification in Adiabatic Updraft Gasifier The Scientific World Journal |
| title | Thermodynamics Analysis of Refinery Sludge Gasification in Adiabatic Updraft Gasifier |
| title_full | Thermodynamics Analysis of Refinery Sludge Gasification in Adiabatic Updraft Gasifier |
| title_fullStr | Thermodynamics Analysis of Refinery Sludge Gasification in Adiabatic Updraft Gasifier |
| title_full_unstemmed | Thermodynamics Analysis of Refinery Sludge Gasification in Adiabatic Updraft Gasifier |
| title_short | Thermodynamics Analysis of Refinery Sludge Gasification in Adiabatic Updraft Gasifier |
| title_sort | thermodynamics analysis of refinery sludge gasification in adiabatic updraft gasifier |
| url | http://dx.doi.org/10.1155/2014/758137 |
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