具有不同维特里尼特/因特里尼特比率的煤中的功能组对热解产品的影响
Anmin Wang1,2, Jiawei Huang1, Meng Zhao1
1College of Geoscience & Surveying Engineering, China University of Mining & Technology, Beijing 10083, China.
ACS omega
|May 30, 2023
概括
维特里尼特含量加速了煤炭热解,增加了有机分子的产生,而内尼特含量促进了二氧化碳的产生. 了解这些状物影响有助于煤炭液化和气化战略.
科学领域:
- 煤炭科学 煤炭科学
- 化学工程是化学工程的组成部分.
- 有机地化学 有机地化学
背景情况:
- 马塞拉的组成显著影响了在热处理过程中煤的化学行为.
- 主要的煤炭矿维特里尼特和内里尼特对热解产品有不同的影响.
- 优化煤炭液化和气化需要了解煤炭的特定反应.
研究的目的:
- 为了阐明玻璃酸盐和内酸盐对煤炭热解产品的影响.
- 为了将马塞拉比率与气体和有机分子的产量和类型相关联.
- 提供理论支持,以状成分为基础的煤炭加工.
主要方法:
- 提取和混合维特里尼特和内里尼特,以产生不同比例的样品.
- 热重力测量与在线质谱测量 (TG-MS) 结合,用于热解分析.
- 里叶变换红外光谱法 (FTIR) 用于在热解前后分析宏分子结构.
主要成果:
- 增加的维特里尼特含量加快了热解,降低了峰值温度,并通过异形侧链降解增强了有机分子的产生.
- 较高的内酸盐含量增加了低温的芳香度和CO2产量,同时抑制了CH4和C2H6的产量.
- 特定的功能组 (-C-O-和-C=O) 与CO和CO2的分别产量相关,其趋势取决于温度.
结论:
- 煤炭热解产品的分布在很大程度上取决于维特里尼特/因特里尼特的比率.
- 玻璃石中的亚利法侧链是有机分子生成的关键前体.
- 在惰性矿石中普遍存在的芳香结构会影响气化途径和产品选择性.
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