关于微生物从煤中去除硫的实验和反应动力学的研究
Dan Zhao1,2, Ping-Ping Sun1,3, Chun-Ming Ai1,3
1College of Safety Science and Engineering, Liaoning Technical University, Huludao, China.
Frontiers in microbiology
|June 21, 2023
概括
微生物脱硫通过去除无机硫,有效地减少了高硫煤的自燃风险. 这一过程增加了煤炭.
科学领域:
- 应用微生物学 应用微生物学
- 物理化学 物理化学
- 反应动力学反应动力学
背景情况:
- 高含硫的煤炭带来了显著的自燃风险.
- 现有的煤炭脱硫方法存在局限性.
研究的目的:
- 为了研究微生物脱硫作为高硫煤的溶液.
- 分析微生物处理对煤炭性能和自燃特性的影响.
主要方法:
- 进行了微生物脱硫实验.
- 扫描电子显微镜 (SEM),里埃变换红外光谱 (FTIR) 和用导数热重力测量 (DTG) 和差分扫描热量测量 (DSC) 进行的热重力测量分析 (TGA) 用于分析.
- 分析了反应动力学,以了解脱硫过程.
主要成果:
- 在30°C,120网状颗粒大小,pH值为2.0和15毫升细菌液体下实现最佳脱硫,达到75.12%的脱硫率.
- 微生物的作用导致了表面侵蚀和减少了矿含量,煤炭的分子结构发生了最小的变化.
- 自发燃烧点增加了50°C,激活能量增加了三倍以上.
结论:
- 微生物脱硫显著降低了高硫煤的自发燃烧潜力.
- 该过程由外部扩散,内部扩散和化学反应控制,其中内部扩散是主要因素.
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