Gasoline desulfurization method

Abstract

The invention provides a gasoline desulfurization method. The gasoline desulfurization comprises the following steps: cutting a gasoline raw material into a light gasoline fraction and a heavy gasoline fraction; performing adsorption desulfurization on the light gasoline fraction to obtain desulfurized light gasoline fraction; and performing selective hydrogenation desulfurization on the heavy gasoline fraction to obtain desulfurized heavy gasoline fraction, wherein the cutting temperature of the light gasoline fraction and the heavy gasoline fraction is 70-110 DEG C. By adopting the gasoline desulfurization method, not only can deep desulfurization of gasoline be realized, but also the octane loss is low.

Description

technical field

[0001] The invention relates to a desulfurization method, in particular to a gasoline desulfurization method. Background technique

[0002] With the increasingly stringent environmental protection regulations around the world, people's requirements for the quality of gasoline products are also getting higher and higher. For example, since January 1, 2014, my country has implemented the National IV emission standard for oil products nationwide, which requires the sulfur content of gasoline to be reduced to below 50ppm; at the same time, my country has also introduced the National V quality standard, which requires the The sulfur content is reduced to below 10ppm, while the olefin content is controlled below 24%.

[0003] Compared with developed countries, the sulfur content in gasoline in my country is relatively high, the main reason is that about 70-80% of gasoline in my country comes from catalytic cracking (FCC) process. Since about 90% of the olefin cont...

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