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探索从红纤维素废弃物的碳化合物作为二次碳燃料,用于可持续的钢铁生产
Álvaro Amado-Fierro1, Teresa A Centeno1, María A Diez1
1Institute of Science and Technology of Carbon (INCAR), CSIC, Francisco Pintado Fe 26, 33011 Oviedo, Spain.
Materials (Basel, Switzerland)
|October 14, 2023
概括
生物质通过热化学过程的转化产生适合于高炉 (BF) 的碳燃料. 经过处理的纤维素材料显示出更好的燃烧和气化性能,克服了水分和杂质的挑战.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 可持续能源 可持续能源
背景情况:
- 红细胞生物质具有碳潜力,但由于高湿度和杂质 (P,K) 需要加工.
- 直接将生物质注入高炉 (BF) 受到这些固有的特征的限制.
- 要将生物质升级为可行的BF燃料,需要进行热化学转换.
研究的目的:
- 评估白树,果包油和已退役的木材对BF应用的适用性.
- 研究热化学转换方法,以提高生物质燃料的性能.
- 评估生物基焦炭的共同热解,共同燃烧和二氧化碳气化行为.
主要方法:
- 低温碳化 (白树) 和水热碳化 (果,木材).
- 热重力测量 (TGA) 用于联合热解,联合燃烧和二氧化碳气化分析.
- 热流热度计用于确定热量值.
主要成果:
- 低温碳化产生了类似于低级煤的生物炭.
- 水热碳化产生了具有改善燃料特性和减少杂质的碳化合物.
- 生物炭在燃烧中增强了点火和反应性;富含红素的水炭显示出更高的CO2气化反应性.
结论:
- 热化学转化有效地提升了用于BF应用的纤维纤维素生物质.
- 经过加工的生物质焦炭显示出联合燃烧和气化的潜力.
- 素含量是二氧化碳气化过程中生物质炭反应性的关键因素.
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