不锈钢管的电解去污实验

Experiment on Electrolysis Decontamination of Stainless Steel Pipes

采用金属球导电法对不锈钢管进行电解去污,考察了电流密度、电解液浓度和温度以及电极间距等对电解去污效率的影响,并与常规槽式电解法进行了比较。钚污染模拟样的电解去污试验结果表明:当电流密度大于 0.2 A/cm^2时,对 5％H_2SO_4 电解液,电解 5min 可实现对污染表面的去污。该方法对不同形状的金属部件均可实现有效去污,也可用于退役核设施的去污。

A new electrolytic decontamination method used metal balls as conducting anode was investigated. The influences of current density, solution property and diameter of pipes on efficiency of electrolytic decontamination were examined and the efficiency of this method was compared with that of common electrolytic method under the same experimental conditions. Decontamination of samples of stainless steel pipes contaminated by plutonium was performed. Experimental results indicate that decontamination of stainless steel pipes contaminated by plutonium can be achieved at the optimum conditions of greater than 0.2 A&middotcm-2 current density, 5% sulfuric acid electrolyte and 5 min electrolysis. This method can be used in the decontamination of a wide variety of decommissioned metal materials.