检查阻碍CO2在煤炭上吸附的因素:来自浅深低级煤层的案例研究
Theodora Noely Tambaria1, Yuichi Sugai1, Ferian Anggara2,3
1Department of Earth Resources Engineering, Kyushu University, 744, Motooka, Nishiku, Fukuoka 819-0395, Japan.
ACS omega
|November 29, 2023
概括
识别适合二氧化碳 (CO2) 封存的煤层需要了解抑制因素. 含有低水分和惰性矿物质的干煤具有更高的二氧化碳吸附潜力,这使得它对封存有希望.
科学领域:
- 地质化学 地质化学
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 低级煤层是二氧化碳 (CO2) 捕获的潜在地点.
- 了解抑制二氧化碳吸附的因素对于有效的封存策略至关重要.
研究的目的:
- 研究影响浅深,低级煤炭二氧化碳吸附的抑制因素.
- 评估水分含量和煤炭成分对二氧化碳吸附能力的影响.
主要方法:
- 在低压下对原煤和干煤样品进行二氧化碳吸附实验.
- 有机分析,扫描电子显微镜和低温吸附.
- 将实验数据与吸附等温模型 (Langmuir, Freundlich) 和统计分析相匹配.
- 使用亨利定律,表面潜力和吉布斯自由能量进行分析.
主要成果:
- 干煤的二氧化碳吸附能力是原煤的1.6-1.8倍.
- 在原始和干燥条件下,CO2吸附发生在单层和多层构成中.
- 高含量的人酸盐增强了二氧化碳吸附,而高含量内酸盐则抑制了它.
- 湿度和内酸盐含量对二氧化碳吸附亲和力和适应性产生了负面影响.
结论:
- 低级煤具有较低的水分和惰性矿物质含量是最有希望的二氧化碳封存.
- 干燥煤增加了二氧化碳吸附能力,通过打开更多的地点和微孔.
- 诸如水分和内酸盐含量等抑制因素显著影响浅深煤层中二氧化碳吸附潜力.
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