Simulation of Steam Gasification in a Fluidized Bed Reactor with Energy Self-Sufficient Condition
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ID: 273319
2017
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Abstract
The biomass gasification process is widely accepted as a popular technology to produce fuel for the application in gas turbines and Organic Rankine Cycle (ORC). Chemical reactions of this process can be separated into three reaction zones: pyrolysis, combustion, and reduction. In this study, sensitivity analysis with respect to three input parameters (gasification temperature, equivalence ratio, and steam-to-biomass ratio) has been carried out to achieve energy self-sufficient conditions in a steam gasification process under the criteria that the carbon conversion efficiency must be more than 70%, and carbon dioxide gas is lower than 20%. Simulation models of the steam gasification process have been carried out by ASPEN Plus and validated with both experimental data and simulation results from Nikoo & Mahinpey (2008). Gasification temperature of 911 °C, equivalence ratio of 0.18, and a steam-to-biomass ratio of 1.78, are considered as an optimal operation point to achieve energy self-sufficient condition. This operating point gives the maximum of carbon conversion efficiency at 91.03%, and carbon dioxide gas at 15.18 volumetric percentages. In this study, life cycle assessment (LCA) is included to compare the environmental performance of conventional and energy self-sufficient gasification for steam biomass gasification.
| Reference Key |
suwatthikul2017energiessimulation
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| Authors | Ajaree Suwatthikul;Siripong Limprachaya;Paisan Kittisupakorn;Iqbal Mohammed Mujtaba;Suwatthikul, Ajaree;Limprachaya, Siripong;Kittisupakorn, Paisan;Mujtaba, Iqbal Mohammed; |
| Journal | energies |
| Year | 2017 |
| DOI |
10.3390/en10030314
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| URL | |
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