贵金属阳极在三相分离器阴极保护中的应用

Application of noble metal anode on cathodic protection of three-phase separators.

将外加电流阴极保护用于三相分离器内壁防腐保护,存在导线电缆接口密封、电缆耐油性、电极选择和辅助阳极选择等问题。经研究和试验,筛选了以铂钛为主并加少量铌的稀贵金属作阳极,并对其制作工艺中温度、铂钛比例、粘接材料、镀层方法和焙烧条件等进行了研究,开发了体积小、寿命长和排流量大的稀贵金属辅助阳极;由试验优选了Ag/AgCl参比电极,改进了制作技术,提高了耐高矿化度和耐油性能;优选了耐油电缆,设计了可耐压0.5MPa的电缆接口技术,满足了现场对技术实施条件的要求。

To solve the problems in using the external current cathodic protection for the corrosion protection of the inside wall of a three-phase separator, lab tests were made. A noble metal containing platinum, titanium and a little columbium is selected as anode. Based on the research of the manufacturing technology, a noble metal auxiliary anode with small size, long life and large magnitude of current is developed. The design, installation and safety precautions are expounded. The method for determining the protection parameters is presented. And the field use of the anode is described.