To investigate the influence of current density on transfer characteristics in the electrolysis cell of chlor-alkali industry

the fluid flow

heat and mass transfer of anode chamber at different current densities were simulated numerically using computational fluid dynamics software. The distributions of velocity

temperature and concentration in a grille of the anode chamber were obtained. Taking liquid circulation rate

maximum velocity near the membrane

temperature and concentration at the membrane surface as indices

the performance of the electrolysis cell at different current densities was evaluated. Liquid circulation rate and temperature of membrane surface increased and concentration of brine decreased with increasing current density. Under typical working conditions for current density of 4.5 kA·m-2

average temperature of the electrolysis cell and of the membrane surface were 86.39℃ and 87.40℃

respectively. Average temperatures of the electrolysis cell and the membrane surface could be maintained at the values of the typical working conditions by lowering inlet temperature of brine when current density increased.