Valorization of Sugarcane Bagasse for Hydrogen-Rich Gas Production using Thermodynamic Modeling Approach

S. Mustapha, I. Mohammed, F. Aderibigbe, T. L. Adewoye, F. O. Omoarukhe, A. O. Sowole
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Abstract

Hydrothermal gasification also known as supercritical water gasification (SWG) has been considered a promising approach for converting wet biomass such as sugarcane bagasse into high-quality syngas. This study presents the thermodynamic modeling of the hydrothermal gasification of sugarcane bagasse using Aspen Plus. The effects of process parameters on the composition and yield of product gases were also investigated. It was found that the effect of temperature and biomass concentration were significant in the production of hydrogen-rich gas, while less impact was observed with pressure. The hydrogen gas (H2) produced with the highest mole fraction (56.70 mol%) and yield (103.26 kmol/kg) was obtained at 750°C and low biomass concentration of 10 wt%, while the lowest yield (1.52 kmol/kg) and mole fraction (2.45 mol%) of H2 were obtained at 450°C and high biomass concentration of 50 wt%. Findings from this study also showed that the highest net calorific value (17.55MJ/kg) was reached at 450˚C and 50 wt% of biomass concentration. This study would help to consolidate research on hydrothermal gasification of sugarcane bagasse and optimization of experimental processes and also serve as an important benchmark in the utilization of biomass as a clean energy source for future projects.
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利用热力学建模方法对甘蔗渣富氢气产气进行数值模拟
水热气化也被称为超临界水气化(SWG),被认为是将湿生物质(如甘蔗渣)转化为高质量合成气的一种有前途的方法。本研究利用Aspen Plus对蔗渣水热气化过程进行了热力学建模。研究了工艺参数对产物气体组成和产率的影响。结果表明,温度和生物量浓度对富氢气体的生成影响显著,而压力对富氢气体的生成影响较小。在750℃、低生物量浓度为10 wt%的条件下,氢气的产率最高,为56.70 mol%,产率为103.26 kmol/kg;在450℃、高生物量浓度为50 wt%的条件下,氢气的产率最低,为1.52 kmol/kg,产率最低,为2.45 mol%。该研究结果还表明,在450˚C和50%生物量浓度下,净热值最高(17.55MJ/kg)。本研究有助于巩固蔗渣水热气化的研究和实验工艺的优化,也为未来项目利用生物质作为清洁能源提供了重要的基准。
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来源期刊
Nigerian Journal of Technological Development
Nigerian Journal of Technological Development Engineering-Engineering (miscellaneous)
CiteScore
1.00
自引率
0.00%
发文量
40
审稿时长
24 weeks
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