The Fluid Catalytic Cracking(FCC)gasoline hydrogenation upgrading desulfurization combination technology can maintain a high octane rating while deeply desulfurizing and reducing olefins.With the extension of operating cycles and the conversion of light gasoline to etherification units,catalyst activity decreases,high octane components decrease,and the octane loss of hydrogenated blended gasoline increases.During the optimization process of reducing octane loss,there was a problem of failure in the doctoral test of hydrogenated gasoline,which affected product blending and sales.After optimizing the inlet temperature of each reactor,the extraction ratio of light gasoline,and the content of circulating hydrogen sulfide,the loss of octane number can be effectively reduced,while avoiding the problem of failure in the doctoral test of hydrogenated gasoline.
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