Design of a corrosion-resistant hydroprocessing reactor effluent air cooler with SS316L lined tubes

Abstract

In this article, stainless steel 316L lined carbon steel tubes are used to prevent flow-induced erosion corrosion in the reactor effluent air cooler during the process of refining. Finite element analysis was carried out to investigate the characteristics of stress, drawing force, and interfacial contact pressure during the cold drawing process. Process parameters such as drawing head size and liner diameter were optimized to produce maximum residual contact pressure at the interface of base tube and liner. The effect of working conditions on tube bonding strength was also studied. It was found that the lined tubes can function well in reactor effluent air cooler under combined loading of internal pressure and elevated temperature, i.e. the normal working condition. Finally examinations and testing were performed to meet the requirement of standards and codes.

Keywords

Reactor effluent air cooler corrosion resistant SS316L lined tubes cold drawing process finite element analysis

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References

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