Perlite Pressure Calculation and Finite Element Simulation Study of LNG Storage Tank

Because perlite has good cold insulation effect and is widely used in LNG full capacity tanks, in this paper, the final perlite lateral pressure can be obtained by repeated iterative calculation using Janssen formula, and the perlite lateral pressure is applied to the inner tank of LNG full capacity tanks for statics finite element simulation. The results show that the deformation of the inner tank is within a reasonable range. At the same time, the perlite lateral pressure buckling analysis is carried out for the inner tank of the LNG tank under the empty tank state. The results show that the tank does not buckle under the empty tank state, and the critical buckling pressure of the inner tank is 3.14 times of the applied pressure, which verifies the rationality of the tank design.