通过气化从生物废物和生物质中回收能源:一个建模方法
Shabnam Ghanbarzadeh1, Yi Yuan2, Ehssan H Koupaie1
1Waste & Wastewater Biorefinery Lab (WWBL), Department of Chemical Engineering, Queen's University, 19 Division Street, Kingston, ON K7L 2N9, Canada.
Biotech (Basel (Switzerland))
|January 21, 2026
概括
废水污泥和食品废弃物可以通过气化有效地转化为可再生燃料,实现与软木生物质相比的能源效率. 这支持可持续的废物转化为合成气的循环生物经济.
科学领域:
- *循环生物经济和可再生能源生产.
- * 废物转化能源技术和可持续资源管理.
背景情况:
- *向循环生物经济过渡需要有效地将生物废物和生物质转化为可再生燃料.
- *高湿度的生物废物,如废水污泥 (WWS) 和食品废物 (FW),与纤维素生物质 (例如软木,SW) 相比,在气化方面具有独特的挑战和机会.
研究的目的:
- *使用平衡模型评估WWS和FW与SW的气化潜力.
- * 评估空气和蒸汽气化参数对气体成分和能源效率的影响.
- * 确定利用湿生物废物作为合成气生产的可持续原料的可行性.
主要方法:
- * 开发一个包含干燥阶段的Aspen Plus平衡模型.
- * 模拟WWS,FW和SW的空气和蒸汽气化过程.
- *检查温度 (400-1200°C),等效率 (ER = 0.1-1) 和蒸汽与生物质比率 (S/B = 0.1-1) 的影响.
主要成果:
- *在中间温度下观察到最大的能量效率 (EE),EE顺序为:SW > FW > WWS.
- *蒸汽气化显著增加了H2含量 (高达54%),而空气气化则在低ER下产生了70-80%的EE.
- * 尽管干燥能耗很高,但WWS和FW表现出强大的能源效率 (60-80%).
结论:
- * 湿生物废物 (WWS,FW) 可以实现与纤维素生物质 (SW) 相比的气化性能.
- * 空气和蒸汽气化都可用于废物转化为合成气,蒸汽有利于H2生产.
- *这些发现支持将生物能源纳入废物管理系统,并推动循环生物经济的发展.
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