Cause Analysis and Stress State Study of Corrosion Case of Shell and Tube Heat Exchanger

Abstract

 Shell and tube heat exchanger is an important equipment in nuclear power, chemical industry and other industries. The working conditions of such equipment are sometimes complex, and the use temperature, fluid state and flow may affect the normal operation of the equipment. In addition, there are many connecting pipes on the shell and tube head of the shell and tube heat exchanger connected with other equipment, which has an impact on the continuity of the equipment structure. Reasons for the corrosion of the shell and tube heat exchanger tube box head in a chemical plant was analyzed in this paper. Finite element method was used to model the corroded tube box head, studies of the stress distribution after corrosion. Some suggestions was given to avoid this kind of corrosion.