烧碱装置管道材质选用浅谈

Selection of Piping Material for Caustic Soda Plant

烧碱装置中的介质包括强酸、强碱、盐、氯气、氢气等,腐蚀类型涵盖化学腐蚀、应力腐蚀、电化学腐蚀、晶间腐蚀、缝隙腐蚀等,管道材料选用涉及碳钢、不锈钢、衬里管道、非金属、钛及钛合金等。从烧碱装置流程开始,系统介绍了各主要工序中管道材质的选择,供设计参考。

The mediums in caustic soda plant include strong acid, strung alkali, salt, chlorine, hydrogen, and sn on. The corrosion types include chemical corrosion, stress corrosion, electrochemical eon＇osion, iatergranular corrosion, crevice corrosion, and so on. The piping materials options involve carbon steel, staiuless steel, lined pipe, nonmetal, titanium,and titanium alloy. The process of caustic soda production is presented firstly, and then the selection of piping material in each main unit is systematically introduced, which will provide reference for the design of caustic soda plant.