Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第29卷    第2期    总第239期    2019年2月

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文章编号:1004-0609(2019)-02-0388-08
盐湖提锂膜堆电解槽流体水力学和数值模拟
刘冬福,唐忠阳,何利华,徐文华,赵中伟

(中南大学 冶金与环境学院,长沙 410083)

摘 要: 针对盐湖卤水电解提锂工艺的特性及其电解槽内流体流动的特征,分别研究电解槽进水口位置、流体流量、流体黏度对槽内流场的影响。通过水力学实验与数值模拟对比,验证所采用数学模型的适用性。结果表明:标准k-ε湍流模型能准确的反映槽内流体的流动状况;对于黏度较大的盐湖卤水,为了强化传质,进水口宜开在进水端中间位置,同时,在不破坏涂覆电极的前提下,应尽可能地增大流体流量。

 

关键词: 盐湖卤水;电解槽;流场;数值模拟;黏度;标准k-ε湍流模型

Fluid hydraulics and numerical simulation on membrane electrolyzer for lithium extraction from salt lake brine
LIU Dong-fu, TANG Zhong-yang, HE Li-hua, XU Wen-hua, ZHAO Zhong-wei

School of Metallurgy and Environment, Central South University, Changsha 410083, Hunan, China

Abstract:According to the characteristics of lithium electrolytic extraction and the fluid flow in the electrolyzer, the effects of the inlet position, fluid flow rate and fluid viscosity on the flow field in the electrolyzer were studied, respectively. Through the comparison of hydraulic experiments and numerical simulation, the applicability of the mathematical model was verified. The results show that the standard k-ε turbulence model can accurately describe the flow state of the fluid in the electrolyzer. Considering the larger viscosity of the salt lake brine, the inlet should be posited in the middle of the water inlet position, and the fluid flow should be increased as much as possible under the premise of without damaging the coated electrode to strengthen the mass transfer.

 

Key words: salt lake brine; electrolyzer; flow field; numerical simulation; viscosity; standard k-ε turbulence model

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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