Abstract: S Zorbtechnology is the main technology for upgrading the ultra-low sulfur quality of gasoline in China and the processed catalytic gasoline by this technology exceeds 50% of the total output of FCC gasoline. With the increase of the unit's operating time, the abrasion problem of the grid plate of the S Zorb desulfurization reactor has become agrowing concern. It has become imperative to study and analyze the grid plate abrasion. In this paper, numerical simulation is adopted to analyze the flow field of the grid plate. By improving the structure of the existing distribution component structure and the structural form of the channel plate, the abrasion risk due to gasket seal failure is reduced.The analysis results provide a basis and solution for future design and on-site handling of such problems, which is crucial to ensure the long-term operation of the device.

Key words: grid plate of desulfurizationreactor, abrasion, numerical simulation, structure optimization