碱性电解槽氢氧混合安全影响因素实验研究OA

To address the safety hazards of hydrogen and oxygen mixing caused by diaphragm rupture during hydrogen production by alkaline water electrolysis,this study investigated the effects of alkaline electrolyte cir-culation flow rate,operating pressure,and pressure deviation between the hydrogen and oxygen sides on gas pu-rity using a single-electrolyzer experimental platform.The results indicated that an optimal value existed for the electrolyte circulation flow rate;both excessively low and high rates exacerbated gas mixing,a phenomenon that was particularly pronounced when the rupture occurred in the upper part of the diaphragm.Furthermore,an in-crease in operating pressure generally elevated the hydrogen content in oxygen,with a more significant impact observed in the lower region of the diaphragm.Moreover,the effect of pressure deviation exhibited position de-pendency.Specifically,the hydrogen content in oxygen at the upper diaphragm rised significantly with an in-creasing pressure difference,whereas the mixing at the lower diaphragm was predominantly driven by the elec-trolyte circulation flow rate.Through experimental analysis,this study elucidated the influence of key parame-ters on hydrogen-oxygen crossover behaviors under typical diaphragm ruptures,thereby providing a reliable ex-perimental basis for the safe operation of electrolyzers.