Analysis of thermal-force coupling stress field under the temperature of alternating of molecular sieve adsorption tower

The thermal stress of molecular sieve adsorption tower under transient temperature 40-290°C is the basis for ensuring safe operation tower. In this paper, based on thermodynamics theory, finite element model full-size established. distribution at key positions body analyzed, and strength maximum equivalent position evaluated. results show that residual corner inner wall opening to take over import export, 313.34MPa, effect force gradually diffused along takeover; inside outside skirt greater than head. corresponding linearization each assessment path were evaluated passed. design, life prediction maintenance in complex cross-change conditions provide theoretical basis.