(中南大學(xué) 冶金與環(huán)境學(xué)院，長(zhǎng)沙 410083)
摘 要: 針對(duì)鹽湖鹵水電解提鋰工藝的特性及其電解槽內(nèi)流體流動(dòng)的特征，分別研究電解槽進(jìn)水口位置、流體流量、流體黏度對(duì)槽內(nèi)流場(chǎng)的影響。通過(guò)水力學(xué)實(shí)驗(yàn)與數(shù)值模擬對(duì)比，驗(yàn)證所采用數(shù)學(xué)模型的適用性。結(jié)果表明：標(biāo)準(zhǔn)k-ε湍流模型能準(zhǔn)確的反映槽內(nèi)流體的流動(dòng)狀況；對(duì)于黏度較大的鹽湖鹵水，為了強(qiáng)化傳質(zhì)，進(jìn)水口宜開(kāi)在進(jìn)水端中間位置，同時(shí)，在不破壞涂覆電極的前提下，應(yīng)盡可能地增大流體流量。
關(guān)鍵字: 鹽湖鹵水；電解槽；流場(chǎng)；數(shù)值模擬；黏度；標(biāo)準(zhǔn)k-ε湍流模型
（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
