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在基于复合方法的二进制碳化合物混合物中精确测量索雷特系数

Renbao Zhao¹, Jiaying Wang¹, Haotian Xu¹

¹State Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum (Beijing), Beijing 102249, China.

Journal of chromatography. A

|September 7, 2024

概括

这项研究引入了一种新的气体染色法,用于准确测量二进制混合物中的索雷特系数,这对于石油和天然气开发至关重要. 这些发现揭示了多孔介质如何减少重力对热扩散的影响.

科学领域:

物理化学物理化学
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

背景情况:

索雷特效应,或二进制系统中的热扩散,在许多应用中至关重要,包括石油和天然气开发.
由于重力诱导的对流和传统方法的局限性,在多孔介质中精确测量索雷特系数具有挑战性.
现有的地面实验在与对流效应作斗争,阻碍了精确的索雷系数确定.

研究的目的:

在散装和多孔介质中研究n-pentane和n-heptane二元混合物的热扩散行为.
开发和验证一种用于计算索雷特系数的新方法,减轻引力影响.
提供适用于重力效应可以忽略不计的场景的修正索雷特系数.

主要方法:

利用气相色谱技术建立了索雷特系数计算的新模型.
研究了n-坦/n-坦混合物的动态度变化和索雷特系数.
采用理论推导来纠正对索雷特系数的引力影响.

主要成果:

建立了组件度,温度和距离热源的距离之间的对数关系.
在多孔介质中测量的索雷特系数值与理论上纠正的值 (不受重力影响) 非常接近.
证明,降低透性可以增强多孔介质对对流动的抵消作用.

结论:

提出了一种用于准确测量索雷特系数的新方法,有效地减少对流.
该研究提供了关键的数据,以了解与石油和天然气行业相关的多孔介质中的热扩散.
多孔介质的特性,如透性,通过抑制对流,显著影响热扩散行为.

关键词:

二进制系统的二进制系统.组件分销部件分销部件分销部件分销部件分销部件分销部件分销部件分销部件分销部件分销的媒介的媒介这就是索雷特系数.热溶解绝对对流的对流.

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