Method for selective hydrogenation using a catalyst containing copper and at least one metal selected from between nickel or cobalt

Patent metadata

Field	Value
Publication number	US-9783745-B2
Application number	US-201415028451-A
Country	US
Kind code	B2
Filing date	Sep 19, 2014
Priority date	Oct 16, 2013
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

The invention relates to a method for selective hydrogenation of a hydrocarbon feedstock that contains at least 2 carbon atoms per molecule and that has a final boiling point that is less than or equal to 250° C. and that comprises at least one polyunsaturated compound, in which in the presence of hydrogen, said feedstock is brought into contact with at least one catalyst that comprises a substrate and an active metal phase deposited on said substrate; said active metal phase comprises copper and at least one metal that is selected from between nickel and cobalt in a molar ratio of Cu:(Ni and/or Co) of greater than 1.

First claim

The invention claimed is:

1. A method for selective hydrogenation of a hydrocarbon feedstock that contains at least 2 carbon atoms per molecule and that has a final boiling point that is less than or equal to 250° C. and that comprises at least one polyunsaturated compound, comprising, in the presence of hydrogen, contacting said feedstock with at least one catalyst that comprises a substrate and an active metal phase that is deposited on said substrate; said active metal phase comprises copper and at least one metal that is nickel or cobalt in a molar ratio of Cu:(Ni and/or Co) of 1 to 4.

2. The method for selective hydrogenation according to claim 1 , in which the molar ratio of Cu:(Ni and/or Co) is between 1.01 and 1.50.

3. The method for selective hydrogenation according to claim 1 , in which the content by mass of the active metal phase in relation to the total mass of the catalyst is between 0.05% and 50%.

4. The method for selective hydrogenation according to claim 3 , in which the content by mass of the active metal phase in relation to the total mass of the catalyst is between 0.1% and 25%.

5. The method for selective hydrogenation according to claim 4 , in which the content by mass of the active metal phase in relation to the total mass of the catalyst is between 0.15% and 15%.

6. The method for selective hydrogenation according to claim 1 , in which said substrate comprises at least one refractory oxide that is an oxide of magnesium, aluminum, silicon, zirconium, thorium, or titanium, each by itself or in a mixture with one another.

7. The method for selective hydrogenation according to claim 6 , in which said substrate is an alumina, silica, silica-alumina, or mixture thereof.

8. The method for selective hydrogenation according to claim 1 , in which said substrate is in the form of balls or extrudates.

9. The method for selective hydrogenation according to claim 1 , in which the active metal phase comprises at least one additional metal that is a metal of group VIII other than nickel and cobalt, or a metal of group IB other than copper.

10. The method for selective hydrogenation according to claim 1 , in which said hydrocarbon feedstock is a fraction that is obtained from catalytic cracking, a C2 steam-cracking fraction, a C3 steam-cracking fraction, a C4 steam-cracking fraction, a C5 steam-cracking fraction, or a steam-cracking gasoline.

11. The method for selective hydrogenation according to claim 1 , which is implemented at a temperature between 0° C. and 500° C., a pressure of between 0.1 and 20 MPa, an hourly volumetric flow rate of between 0.1 and 200 h −1 for a liquid feedstock, between 100 and 50,000 h −1 for a gaseous feedstock, and at a molar ratio of (hydrogen)/(polyunsaturated compounds to be hydrogenated) of between 0.1 and 200.

12. The method for selective hydrogenation according to claim 10 , in which said hydrocarbon feedstock is a steam-cracking gasoline and said method is implemented in the liquid phase at a total pressure of between 0.3 and 6.5 MPa, at a temperature of between 20 and 250° C., at a molar ratio of (hydrogen)/(polyunsaturated compounds to be hydrogenated) of between 1 and 2, and at an hourly volumetric flow rate of between 0.5 h −1 and 50 h −1 .

Assignees

• Ifp Energies Now

Inventors

• Corvaisier Fabien
• Fecant Antoine
• Thomazeau Cecile
• Raybaud Pascal
• Schuurman Yves
• Farrusseng David

Classifications

• B01J35/1042

  Operations & Transport · mapped topic

• B01J35/1019

  Operations & Transport · mapped topic

• B01J23/75

  Cobalt · CPC title

• B01J21/04

  Alumina · CPC title

• B01J37/0201

  Impregnation · CPC title