建模CO2吸附在薄的离散包装中的吸附
Michael Wray1, Farida Amrouche1, Farid Aiouache1
1School of Engineering, Lancaster University, Lancaster LA1 4YR, U.K.
Industrial & engineering chemistry research
|April 29, 2024
概括
3D建模显示,扩散运输是薄管中二氧化碳 (CO2) 吸附的关键,其性能优于向导. 这一发现有助于我们更好地理解在封装床中的二氧化碳捕获动态.
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
- 物理化学 物理化学
背景情况:
- 薄管包装床吸附器对于热化学能量储存和大气振兴至关重要.
- 了解二氧化碳 (CO2) 吸附的局部动态对于优化这些系统至关重要.
- 现有的一维模型通常依赖于经验分散,限制准确性.
研究的目的:
- 通过3D建模,评估二氧化碳吸附在薄管中的离散包装中的局部动态.
- 研究外热性,流体流动和运输机制之间的相互作用.
- 为了比较对二氧化碳突破趋势的向与扩散运输的有效性.
主要方法:
- 在薄管包装床中的二氧化碳吸附动态的3D计算建模.
- 在粒子间和粒子内部尺度上分析度梯度.
- 模型结果与吸附剂出口的实验数据进行比较.
主要成果:
- 发现扩散运输在影响二氧化碳突破趋势方面比辅助运输更有效.
- 在粒子间和粒子内部水平上观察到显著的度梯度.
- 在高速区域减少质量转移阻力,增强对流转移到毛孔,影响角对称性.
结论:
- 3D建模方法准确地反映了实验CO2吸附数据.
- 扩散运输在这些系统中的二氧化碳突破中扮演的角色比转向更为关键.
- 这些发现减少了对包装床吸附器的一维模拟中的经验分散模型的依赖.
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