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铜电解槽的进液口布置方式对极板间的流场有着显著的影响,而流场的分布决定电解过程中的电流分布。为了深入了解电解液在竖直极板间复杂的流动行为,以铜电解槽为研究对象,建立了针对“一端进液”、“底部中心进液”、“上侧交错进液”和“底部交错进液”4种不同进液方式下电解槽内电解液的流动过程的三维计算流体动力学模型并进行数值模拟。结果表明:由于“底部中心进液”式电解槽中进液口的位置分布不均匀,其速度的极差较大,是交错进液时的4倍以上。另外,由于“底部交错进液”式电解槽内电解液的湍流强度较大,因此其体平均速度是“一端进液”式的4倍。综合来看,“底部交错进液”式电解槽能够将新鲜的电解液快速、均匀地补充到极板间,为提高电流密度和增加产能奠定了基础。
The arrangement of the inlet of the copper electrolyzer has a significant influence on the flow field between the plates, and the distribution of the flow field determines the current distribution in the electrolysis process. In order to understand the complex flow behavior of the electrolyte between the vertical plates, a copper cell was set as the research object, Liquid “and” staggered staggered into the bottom of the liquid “4 different ways to enter the electrolyte solution flow cell electrolysis process of three-dimensional computational fluid dynamics and numerical simulation. The results show that due to the uneven distribution of the liquid inlet in the ”bottom center inlet“ type electrolyzer, the speed difference is larger, which is more than 4 times of the staggered inlet. In addition, due to the greater turbulent intensity of the electrolyte in the ”staggered staggering bottom“ cell, the average body speed is four times greater than the ”one end feed“. Taken together, ”bottom staggered into the liquid " type electrolyzer to fresh electrolyte quickly and evenly added between the plates, in order to improve the current density and increase production capacity laid the foundation.