Pore-Scale and Upscaled Investigations of Release and Transport of Lithium in Organic-Rich Shales
Pore-Scale and Upscaled Investigations of Release and Transport of Lithium in Organic-Rich Shales
复制标题
富含有机质页岩中锂的释放和运移的孔隙尺度和放大研究
DOI：
10.1007/s11242-024-02071-2
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发表时间：
2024
影响因子：
2.7
通讯作者：
Lee, Kyung Jae
中科院分区：
文献类型：
--
作者：
You, Jiahui;Lee, Kyung Jae
为了满足可充电电池对锂（Li）的广泛需求，通过使其资源多样化来提高Li生产至关重要。最近的研究发现，来自页岩储层的采出水含有各种有机和无机组分，包括大量的Li。在这项研究中，从水热反应实验的结果进行了分析，以充分了解锂从富含有机质的页岩释放。随后，开发了孔隙尺度和连续尺度模型的数值算法，以模拟页岩卤水中Li的长期行为。实验条件考虑了四种不同的水热溶液，包括在130 °C、165 °C和200 °C下的不同浓度的KCl、MgCl2、CaCl2和NaCl溶液。锂从页岩中释放到流体中是岩石与流体之间阳离子交换的化学作用。通过耦合岩石与流体间Li相互作用的化学反应模型，建立了反应迁移孔隙尺度模型和放大的连续尺度模型。该模型首先实施调查的释放和传输的锂在孔隙尺度。连续尺度的属性，如有效扩散系数和锂释放速率，得到的场平均孔隙尺度模拟结果。这些属性被用作放大的连续尺度模拟的输入数据。这项研究的结果，预计将提供新的洞察力，从页岩卤水生产的锂阐明释放，命运，并在地下地层中的运输。
To meet the extensive demand for lithium (Li) for rechargeable batteries, it is crucial to enhance Li production by diversifying its resources. Recent studies have found that produced water from shale reservoirs contains various organic and inorganic components, including a significant amount of Li. In this study, findings from hydrothermal reaction experiments were analyzed to fully understand the release of Li from organic-rich shale rock. Subsequently, numerical algorithms were developed for both pore-scale and continuum-scale models to simulate the long-term behavior of Li in shale brines. The experimental conditions considered four different hydrothermal solutions, including the solutions of KCl, MgCl2, CaCl2, and NaCl with various concentrations under the temperature of 130 °C, 165 °C, and 200 °C. The release of Li from shale rock into fluid was regarded as a chemical interaction of cation exchange between rock and fluid. The reactive transport pore-scale and upscaled continuum-scale models were developed by coupling the chemical reaction model of Li interaction between rock and fluid. The model was first implemented to investigate the release and transport of Li in the pore scale. Continuum-scale properties, such as effective diffusivity coefficients and Li release rate, were obtained as the field-averaged pore-scale modeling results. These properties were used as the input data for the upscaled continuum-scale simulation. The findings of this study are expected to provide new insight into the production of Li from shale brines by elucidating the release, fate, and transport of Li in subsurface formations.