Evaluation of the stressed-deformed condition of the cylindrical shell of the separator under corrosion wear

Abstract

Separators are operated at elevated working pressures and temperatures, as well as the simultaneous presence of liquid and gaseous working media that have an aggressive effect on the metal. With the combined action of workloads and exposure to a corrosive environment during operation, the development of defects such as general corrosion, stress corrosion cracking, ulcerative corrosion, etc. In order to determine the technical condition of the apparatus, the main mechanism of damage of which is corrosion, it is necessary to measure wall thicknesses, the minimum value of which is regulated by the current regulatory and technical documents on industrial safety. The presence of such uncontrolled areas does not fully provide a reliable picture of the assessment of the technical condition, and the actual stress-strain state of the entire shell is not taken into account, depending on the design of the apparatus, the presence and location of process fittings, the degree of corrosion wear, etc. In this paper, we study the relationship between the impact of operational loads, the influence of the location of technological fittings on the stress-strain state of the cylindrical shell of the separator during its corrosion wear.