Optimization of a Bubbling Fluidized Bed Plant for Low-Temperature Gasification of Biomass
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ID: 273756
2017
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Abstract
Investigation into clean energies has been focused on finding an alternative to fossil fuels in order to reduce global warming while at the same time satisfying the world’s energy needs. Biomass gasification is seen as a promising thermochemical conversion technology as it allows useful gaseous products to be obtained from low-energy-density solid fuels. Air–steam mixtures are the most commonly used gasification agents. The gasification performances of several biomass samples and their mixtures were compared. One softwood (pine) and one hardwood (chestnut), their torrefied counterparts, and other Spanish-based biomass wastes such as almond shell, olive stone, grape and olive pomaces or cocoa shell were tested, and their behaviors at several different stoichiometric ratios (SR) and steam/air ratios (S/A) were compared. The optimum SR was found to be in the 0.2–0.3 range for S/A = 75/25. At these conditions a syngas stream with 35% of H2 + CO and a gas yield of 2 L gas/g fuel were obtained, which represents a cold-gas efficiency of almost 50%. The torrefaction process does not significantly affect the quality of the product syngas. Some of the obtained chars were analyzed to assess their use as precursors for catalysts, combustion fuel or for agricultural purposes such as soil amendment.
| Reference Key |
gonzález-vázquez2017energiesoptimization
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| Authors | María Pilar González-Vázquez;Roberto García;Covadonga Pevida;Fernando Rubiera;González-Vázquez, María Pilar;García, Roberto;Pevida, Covadonga;Rubiera, Fernando; |
| Journal | energies |
| Year | 2017 |
| DOI |
10.3390/en10030306
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