40kA隔膜钠电解槽电场的三维模拟

3D simulations of electric field on 40 kA diaphragm sodium electrolysis cell

借助已有的无隔膜钠电解槽的研究成果,采用数值模拟的方法对有隔膜钠电解槽的隔膜置于不同位置时候的电场分布情况进行了三维仿真模拟,同时根据工业电解槽中电解质电压的计算方法给出了阴阳极之间熔体的具体分布是影响熔盐电解质电压变化的决定性因素,隔膜位置的改变会使得熔体电压发生较大变化,但对自身的影响很小,内外表面的电势差维持在0.2 V左右,最终得出隔膜向阴极靠近时对40 kA隔膜钠电解槽的实际电解生产有利.

Based on the existing research results,the three-dimensional distribution of electric field in different diaphragm position of diaphragm sodium electrolysis cell was simulated by using the numerical simulation method.Meanwhile,the specific distribution of the melt was found to be the decisive factor of melt voltage change according to the calculation method of electrolyte voltage.The effect of change in the diaphragm position on the melt voltage is great,but small on diaphragm itself,whose surface potential remains 0.2V.It is indicated that the position of diaphragm near the cathode was advantageous to the real electrolytic operating condition of 40 kA diaphragm sodium electrolysis cell.