(華東理工大學(xué) 鹽湖資源綜合利用國(guó)家工程研究中心，上海 200237)
摘 要: 通過(guò)建立鋰電解槽電解質(zhì)-氯氣氣液兩相流二維模型，使用標(biāo)準(zhǔn) 兩方程模型耦合歐拉-歐拉模型求解不同極間通道內(nèi)電解質(zhì)速度與體積分?jǐn)?shù)分布，研究電流密度均勻和不均勻分布對(duì)氣體分率與液相速度的影響。結(jié)果表明：均勻模型的體積分?jǐn)?shù)和液相速度均大于非均勻模型；對(duì)不同結(jié)構(gòu)和操作參數(shù)的分析發(fā)現(xiàn)，縮短極距能夠降低體積分?jǐn)?shù)，使側(cè)面極間通道內(nèi)電解質(zhì)速度增加，中間極間通道內(nèi)速度下降；增大陽(yáng)極半徑，體積分?jǐn)?shù)與液相速度均下降；增加電解質(zhì)液面高度對(duì)兩者的影響不大，增大電流則會(huì)使兩者增加。
關(guān)鍵字: 鋰電解槽；極間通道；氣液兩相流；數(shù)值模擬
（National Engineering Research Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai 200237, China）
Abstract:A 2D model of electrolyte-chlorine gas-liquid two-phase flow in lithium electrolysis cell was established. The standard “ ” two-equation model used with the Euler-Euler model was used to solve the electrolyte velocity and volume fraction in different inter-electrode channels. Considering the influence of uniform and non-uniform distribution of current density on volume fraction and liquid flow rate, it is obtained that the volume fraction and liquid flow rate of uniform model are greater than that of non-uniform model.The study of various cell components and operating parameters showed that a reduced electrode distance could reduce the volume fraction and increase the electrolyte velocity in the side channel. This would contrastingly reduce the velocity in the middle channel. Furthermore, it was found that increasing the anode radius would decrease the volume fraction and liquid velocity. Also, increasing the electrolyte height yielded no noticeable effects but increasing the current intensity increased both the volume fractionand liquid velocity.
Key words: lithium electrolysis cell; electrode channel; gas-liquid two-phase flow; numerical simulation
