Analysis And Optimization Of The Rationality Of The Bottom Structure Of The Transfer Line Exchanger

In this paper, structural analysis and optimization were carry out to solve the thermal deformation compatibility problem and the sealing problem. And temperature field, thermal deformation of the down channel and its liner of the four inlets Transfer Line Exchanger (TLE) were simulated by the software ANSYS. The simulation results show that there is about 4mm thermal deformation space between shell and its liner, and the thermal deformation of the lower flange are only 62% and 74% of the the upper flange in X and Y direction. These were the main reason of liner cracking and leaking. Therefore, the optimized design, such as stiffening ring, sub-blocks of liner and reserve clearance between the liner and the support plates, were given. The thermal deformation of the radiation section tube of the cracking furnace and the additional forces to the connectting flange were simulated, and discussed the sealing performance of the connection flange. The result can be used to improve the safe operation and the localization design of the large-scale TLE.