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Numerical Investigation of Flow Arrangement in Battery Electrode Deionization Stacks with Configurations of Plate Heat Exchangers
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2023-11-30 , DOI: 10.1021/acs.iecr.3c03137 Rui Liu 1 , Qiqi Zhang 1 , Yan Shen 1 , Shouguang Yao 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2023-11-30 , DOI: 10.1021/acs.iecr.3c03137 Rui Liu 1 , Qiqi Zhang 1 , Yan Shen 1 , Shouguang Yao 1
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Capacitive deionization (CDI) is a technology that removes ions by the action of the electric field. Battery electrode deionization (BDI) is distinguished from CDI by allowing continuous desalination. The BDI studies focus on electrode electrochemical properties and thus typically use small lab-scale cells. As the demand for freshwater increases, the BDI cell moves to larger scales or multiple stacks. In contrast, few studies have focused on the BDI stack, especially its flow arrangement. Six styles of BDI stacks based on the plate heat exchanger-like flow arrangement are proposed in this work. The BDI model is established based on Brinkman’s equation, porous media transport theory, and intercalation reaction kinetics theory. The flow field, pressure drop, concentration distribution, and desalination performance of plate-type stacks are analyzed. The results show that the parallel arrangement can prevent extremely high flow rates and has smaller pressure drops. The outlet concentration per cell in the parallel arrangement is dependent on each other, while the series arrangement is independent. The number of stacks helps to enhance the final outlet concentration drop. On the desalination performance, parallel stacks are performed more stably and effectively when the number of stacks increases.
中文翻译：
具有板式换热器配置的电池电极去离子堆中流动布置的数值研究
电容去离子（CDI）是一种通过电场作用去除离子的技术。电池电极去离子 (BDI) 与 CDI 的区别在于允许连续脱盐。BDI 研究重点是电极电化学特性，因此通常使用小型实验室规模的电池。随着淡水需求的增加，BDI 电池转向更大的规模或多个堆叠。相比之下，很少有研究关注 BDI 堆栈，尤其是其流程安排。这项工作提出了六种基于板式换热器流动布置的 BDI 堆栈。BDI模型是基于Brinkman方程、多孔介质输运理论和插层反应动力学理论建立的。分析了板式烟囱的流场、压降、浓度分布和海水淡化性能。结果表明，并联布置可以防止极高的流量并且具有较小的压降。并联布置中每个池的出口浓度相互依赖，而串联布置是独立的。烟囱的数量有助于提高最终出口浓度下降。在海水淡化性能上，当堆数增加时，并联堆的执行更加稳定和有效。
更新日期：2023-11-30
中文翻译：
具有板式换热器配置的电池电极去离子堆中流动布置的数值研究
电容去离子（CDI）是一种通过电场作用去除离子的技术。电池电极去离子 (BDI) 与 CDI 的区别在于允许连续脱盐。BDI 研究重点是电极电化学特性，因此通常使用小型实验室规模的电池。随着淡水需求的增加，BDI 电池转向更大的规模或多个堆叠。相比之下，很少有研究关注 BDI 堆栈，尤其是其流程安排。这项工作提出了六种基于板式换热器流动布置的 BDI 堆栈。BDI模型是基于Brinkman方程、多孔介质输运理论和插层反应动力学理论建立的。分析了板式烟囱的流场、压降、浓度分布和海水淡化性能。结果表明，并联布置可以防止极高的流量并且具有较小的压降。并联布置中每个池的出口浓度相互依赖，而串联布置是独立的。烟囱的数量有助于提高最终出口浓度下降。在海水淡化性能上，当堆数增加时，并联堆的执行更加稳定和有效。
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