使用木炭和木炭支撑铁催化剂催化生物质蒸汽气化制氢

IF 5.6 2区 工程技术 Q2 ENERGY & FUELS
Yan Cao , Yu Bai , Jiang Du
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Hydrogen production from catalytic steam-gasification of biomass using char and char-supported iron catalysts
Char derived from the pyrolysis of carbon-based fuels, such as biomass and coal, has been widely used as a support material. In this study, biochar, coalchar, biochar-supported Fe (Fe/B) and coalchar-supported Fe (Fe/C) were prepared for tar cracking and H2 enhancement during wood chips gasification. All experiments were conducted in a fluidized bed gasification system using steam as the gasification agent. The results revealed that the effectiveness of each catalyst in removing tar is ranked as follows: biochar < coalchar < Fe/B < Fe/C. The highest H2 content (49.2 vol%) was also obtained at 800 °C and in the presence of 6 wt% Fe/C as catalyst. Tar cracking improved significantly with increasing Fe content from 0 to 6.0 wt%, but showed little further improvement beyond 6.0 wt% Fe content. The results indicated that adding steam had minimal effect on the tar content in the gas produced from the gasification of wood chips using the Fe/C catalyst. However, raising the gasifier temperature from 700 to 850 °C led to a significant reduction in tar yield. This reduction is attributed to the promotion of cracking and reforming reactions during the gasification process. This work showed that the char composition significantly influences its catalytic performance regarding tar reduction and H2 enhancement.
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来源期刊
Journal of The Energy Institute
Journal of The Energy Institute 工程技术-能源与燃料
CiteScore
10.60
自引率
5.30%
发文量
166
审稿时长
16 days
期刊介绍: The Journal of the Energy Institute provides peer reviewed coverage of original high quality research on energy, engineering and technology.The coverage is broad and the main areas of interest include: Combustion engineering and associated technologies; process heating; power generation; engines and propulsion; emissions and environmental pollution control; clean coal technologies; carbon abatement technologies Emissions and environmental pollution control; safety and hazards; Clean coal technologies; carbon abatement technologies, including carbon capture and storage, CCS; Petroleum engineering and fuel quality, including storage and transport Alternative energy sources; biomass utilisation and biomass conversion technologies; energy from waste, incineration and recycling Energy conversion, energy recovery and energy efficiency; space heating, fuel cells, heat pumps and cooling systems Energy storage The journal''s coverage reflects changes in energy technology that result from the transition to more efficient energy production and end use together with reduced carbon emission.
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