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| 基于牛粪纤维的复合燃料制备及燃烧性能探讨 |
| Preparation and combustion performance of composite fuel based on cattle manure fiber |
| 投稿时间：2024-11-12 |
| DOI：10.13254/j.jare.2024.0895 |
| 中文关键词: 牛粪 复合燃料 热值 燃烧特性 |
| 英文关键词: cow dung composite fuel caloric value combustion characteristic |
| 基金项目:沈阳建筑大学创新组群课题（E361335） |
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| 摘要点击次数: 412 |
| 全文下载次数: 208 |
| 中文摘要: |
| 本研究以肉牛牛粪为主要材料，经过脱水处理后，与花生壳及干化煤泥混合制备复合燃料，获得了最优的掺比参数，并对该复合燃料的燃烧性能进行了分析。结果表明：经过脱水处理，牛粪固相中的灰分降低63.3%，挥发分和固定碳分别增加3.5%和173.8%，发热量提高53%，氮元素和硫元素含量分别降低48.3%和43.7%，碳元素含量增加6.6%。采取优化后的花生壳和煤泥的混配比例，显著提高了复合燃料的热值，改善了燃烧性能，同时降低了灰分含量。特别是少量煤泥的加入，其高固定碳含量可有效延长复合燃料的燃烧持续时间。此外，成型压力对燃料热值有重要影响，研究表明该复合燃料的最佳成型压力范围为 15~20MPa，此时燃料的松弛密度为1.76~1.77 g·cm-3，热值达到最高。本研究为肉牛牛粪的资源化利用提供一个新的可行途径。 |
| 英文摘要: |
| This study utilized beef cattle manure as the primary material, which, after dewatering, was mixed with peanut shells and dried coal sludge to prepare composite fuel. The optimal mixing ratio parameters were determined, and the combustion performance of the composite fuel was analyzed. Results showed that after dewatering, the ash content in the solid phase of cattle manure decreased by 63.3%, while volatile matter and fixed carbon increased by 3.5% and 173.8%, respectively. The calorific value increased by 53%, and the nitrogen and sulfur content decreased by 48.3% and 43.7%, respectively, while the carbon content increased by 6.6%. The optimized mixing ratio of peanut shells and coal sludge significantly enhanced the calorific value of the composite fuel, improved combustion performance, and reduced ash content. Notably, the addition of a small amount of coal sludge, with its high fixed carbon content, effectively prolonged the combustion duration of the composite fuel. Furthermore, forming pressure had a direct impact on fuel calorific value. The study identified an optimal forming pressure range of 15-20 MPa, where the relaxed density of the fuel reached 1.76-1.77 g·cm-3, achieving the highest calorific value. This study provides a novel and feasible approach for the resource utilization of beef cattle manure. |
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