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在实验室规模的下游反应堆中实现自给自足的生物质气化,用于紧型CHP应用

Takanori Itoh¹, Shota Hanabusa², Kazunori Iwabuchi¹

¹Research Faculty of Agriculture, Hokkaido University, Sapporo, Hokkaido, Japan.

|February 27, 2026

概括

这项研究表明,实验室规模的自热气化在家庭热电联合发电 (CHP) 系统中是可行的. 优化氧气使用和热管理对于超小规模生物质气化器效率至关重要.

科学领域:

生物质能源转换生物质能源转换
热化学处理处理热化学加工
可再生能源系统可再生能源系统

背景情况:

微型化生物质气化器对于使用固体氧化物燃料电池 (SOFC) 的家庭规模的热电联产系统至关重要.
由于大量的热损失,在小规模实现自给自足的气化是很困难的.
实验室规模的气化器性能通常受到热管理和不完整反应的限制.

研究的目的:

为了评估一个实验室规模的移动床下游气化器的自给自足潜力,使用木炭.
为了确定稳定和高效的气化,最优的等价比 (ER).
确定限制性能的关键因素,并为未来的超小规模热力发电应用提出改进建议.

主要方法:

使用实验室规模的移动床下游气化器与木炭进行了实验.
将等价比 (ER) 从0.47变化为0.65.
分析的产品气体组成,温度概况,碳转化和冷气效率.

主要成果:

在ER 0.47-0.60下实现了稳定的气化,氧化区温度为800-1000°C.
在ER 0.60的最佳性能包括15%的CO,5%的H2,2.60MJ/Nm3的LHV,74.4%的碳转化和48.4%的冷气效率.
性能受到低降温区温度 (~600°C),残留O2 (5.9%) 和热损失 (~30.5%) 的限制.

结论:

实验室规模的自热气化对于小规模的热电联产系统是可行的.
从理论上讲,将剩余氧降低到1%以下可以显著增加温度.
改善氧气利用和热管理对于提高超小型生物质气化器效率至关重要.

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