1results about How to "Improve liquid yield" patented technology

The application provides a method for reducing olefins in catalytic cracking gasoline by hydro-upgrading, which comprises the following steps: after catalytic cracking gasoline is mixed with hydrogen, pre-hydrogenation reaction is carried out under the action of a pre-hydrogenation catalyst, diene in the catalytic cracking gasoline is selectively hydrogenated and converted into mono-olefin, and a pre-hydrogenation product is obtained; the pre-hydrogenation product is mixed with hydrogen, and hydro-upgrading reaction is carried out under the action of a hydro-upgrading catalyst, sulfur is removed, and olefins are converted into isomeric alkanes and aromatic hydrocarbons. The pre-hydrogenation catalyst and the hydro-upgrading catalyst used in the application not only have a simple preparation process, no calcination process and no nitrogen oxide emission, but also have a large number of Co(Ni)-Mo-S active sites and / or medium-strong acid. Therefore, the method for reducing olefins in catalytic cracking gasoline by hydro-upgrading of the application not only realizes deep desulfurization of catalytic cracking gasoline, greatly reduces the content of olefins and preserves the octane number, but also has the advantage of high liquid yield.