Hydrodesulfurization method of gasoline

Abstract

The invention discloses a hydrodesulfurization method of gasoline. The method adopts a fixed bed reactor. The catalyst is a loaded cobalt molybdenum catalyst, the hydrodesulfurization process conditions are: a reaction temperature of 190-310DEG C, a reaction pressure of 1.3-2.6MPa, a volume space velocity of 1.3-3.5h<-1>, and a hydrogen-to-oil volume ratio of 180-400:1. The hydrodesulfurization method provided by the invention has the advantages of mild process conditions, strong adaptability to different raw materials, low octane value and high desulfurization rate.

Description

technical field

[0001] The invention relates to a gasoline hydrogenation desulfurization method, more specifically, an FCC gasoline hydrogenation desulfurization catalyst with a zinc oxide-alumina composite material as a carrier is used for selective hydrogenation desulfurization of catalytic cracking gasoline. Background technique

[0002] Because catalytic cracking gasoline generally has a sulfur content of 100-500v%, there are even high-sulfur and high-olefin feed oils with a sulfur content of more than 500 mg / kg and an olefin content of more than 40%. Selective hydrodesulfurization technology will inevitably cause partial saturation of olefins and lower octane number during deep hydrodesulfurization, which requires hydrodesulfurization catalyst to desulfurize while avoiding excessive loss of octane number as much as possible.

[0003] Composite materials of zinc oxide and alumina are often used as desulfurization catalytic materials in the field of hydrodesulfurization. ...