实验和数值调查在现场加压热解的特征,富含焦油煤的煤炭
Jingyuan Hao1, Baojin Qi1, Jinjia Wei1
1School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
ACS omega
|March 9, 2026
概括
用模拟和实验研究了富含焦油煤的高压in-situ热解. 增加的压力稍微阻碍了煤炭的形成,降低了焦油的产量,同时增加了多环芳含量.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
- 地质化学 地质化学
背景情况:
- 现场热解可以清洁地利用富含焦油的煤炭.
- 地下高压条件使了解煤炭热解机制变得复杂.
研究的目的:
- 在高压下研究富含焦油煤的热解.
- 阐明压力对热解机制和焦油特性的影响.
主要方法:
- 组合ReaxFF分子动力学模拟与实验验证.
- 分析了在不同温度和压力下 (高达2MPa) 的煤炭热解行为.
主要成果:
- 增加的压力适度地提高了炭形成激活能量.
- 在2 MPa时,最大焦油产量从9.14%降至6.97%.
- 焦油中的多环芳含量随着压力而增加.
结论:
- 高压减缓了固体相热解,减少了整体焦油产量.
- 模拟和实验显示了一致的热解趋势,验证了研究结果.
- 为高压现场煤炭利用开发提供原子规模的见解.
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