在烧结过程中去除NO的机制是基于减少碳排放的来源
Shiwang Han1, Ranlei Shao1, Luyuan Wang1
1Energy Research Institute of Shandong Academy of Science, Qilu University of Technology (Shandong Academy of Sciences) Jinan 250014 China hsw550012621@163.com 2463572722@qq.com luyuanwang1988@126.com xyzh@qlu.edu.cn xcb199602@163.com.
RSC advances
|April 8, 2024
概括
在铁矿石烧结中使用生物炭作为焦炭的部分替代品,可以显著减少超过90%的氧化 (NOx) 排放. 这种可持续的方法还可以将二氧化碳 (CO2) 排放量减少约50%,而不会影响烧结矿石的质量.
科学领域:
- 金工程 金工程 金工程
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 铁矿石烧结是一个关键的工业过程,但它产生大量的氧化 (NOx) 排放.
- 焦炭是一种传统的燃料,有助于这些有害排放和温室气体的产生.
- 生物炭是一种可持续的替代品,在烧结中提供了减少排放的潜力.
研究的目的:
- 研究生物炭作为焦炭的部分替代品对铁矿石烧结过程中NOx排放的影响.
- 量化通过纳入生物炭实现的NOx和二氧化碳 (CO2) 排放量减少.
- 评估生物炭替代对烧结矿石物理化学性质的影响.
主要方法:
- 模拟铁矿石烧结,使用不同比例的生物炭和焦粉 (0%到100%的替代).
- 使用烧结烟气检测系统监测NOx排放.
- 对烧结矿石属性的分析,包括XRD,拉曼,FTIR和维克斯硬度测试.
主要成果:
- 50%的生物炭替代焦炭导致NOx排放量最低,超过90%的减少.
- 通过50%的生物炭替代,二氧化碳排放量减少了约50%.
- 烧结矿石的硬度在610到710N之间,Fe含量和晶体相的变化最小.
结论:
- 生物炭是一种有效的替代燃料,可以减少铁矿石烧结中的NOx和CO2排放.
- 最佳的生物炭替代 (50%) 实现了大幅度的排放减少,同时保持了可接受的烧结矿石质量.
- 这项研究表明,对于更清洁的铁矿石烧结来说,这是一个有希望的可持续战略.
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