THE CORROSION AND PROTECTION OF THE QUENCH TOWER IN CHLOROETHYLENE UNIT

摘要

In this paper, we discussed about the Corrosion and Protection of the Quench Tower in Chloroethylene Unit in 370,000 tons/year Oxychloride procedure. The technique of this Quench Tower is that: design operational temperature 370 °C, design operational pressure 0.7Mpa with strong acid and organic solvent. Because this Quench Tower is operated under such a harsh corrosive environment and, also it is very important in production process, we adopted the compound anticorrosive structure and applied the Titanium-Palladium Alloy to the internal parts on the basis of referring the preventing plan of the WOOD Company. This article introduced the Asplit 846 painting which are imported from Germany; the Asplit LF insulating layers and the Asplit VP 788 clay lining which works on two acid-proof bricks and one carbon brick compound anticorrosive structure; the reasonable structure between the insert tube and the Tower body. It makes a summary on the process for anticorrosive operation. We have created a high-quality project in corrosive field in the structural design; material application and quality control during this Quench Tower project.