Abstract: This paper utilized Dynsim software to conduct dynamic process simulation of the ethylene oxide (EO) reaction system under runaway conditions, enabling real-time tracking of critical system parameters such as fluid temperature and reactor wall temperature. Additionally, Fluent software was employed to simulate the maximum attainable temperature of the reactor wall during runaway scenarios. This approach provides robust theoretical support for ensuring the safety, economy and rationality of EO reactor design. Based on the simulation results, the EO reactor design temperature at runaway conditions was reduced from 584 ℃ to 380 ℃ and the reactor wall thickness was decreased to 62 mm from 261 mm. This has effectively reduced manufacturing costs, shortened the production cycle and resolved engineering challenges in reactor design and manufacturing.

Key words: EO reactorlrunawayldynamic simulationlDynsimlFluent