In designs for piping with refractory lining used in Residue Fluid Catalytic Cracking Process (RFCC) and Fluid Catalytic Cracking Process (FCC) of a refinery, no influential design factors are considered, such as the effects of lining stiffinessand the difference of themal expansion between pipe and lining.However, influences of lining due to its stiffness and the difference of themal expansion between pipe and lining would not be negligibly small. This paper proposes a new stress analysis method for piping with lining. The analysis is performed by a piping stress analysis program.The pipe and lining are modeled by beam elements. This method applies a modified flexibility factor and a modified stress intensification factor for pipe and lining respectively. These two kinds of factors are individually obtained by comparing theresults of FEManalysis using 3D shell/solid elements with the results of piping analysis by beam theory. The experiments for piping without lining and piping with lining were carried out at room temperature, and the validity and accuracy of the proposedmethod were verified by comparing the experimental results.
展开▼
