Ifp Energies Nouvelles

Cnrs

Centre National De La Recherche Scientifique

Elodie Devers

Philibert Leflaive

Etienne Girard

Fabrice Diehl

Florent Picard

Antoine Daudin

Karin Marchand

Bertrand Guichard

Vincent Coupard

Malika Boualleg

Alexandra Chaumonnot

Christophe Bouchy

Nathalie Marchal-George

Marie-Claire Marion

Audrey Bonduelle

Hugues Dulot

Julien Gornay

Manuela Bader

Marc-Antoine Lelias

Veronique Dufaud

Frederic Lefebvre

Susana Lopes Silva

Philibert LeFlaive

Véronique Dufaud

Goncalo Gaeiro

Frédéric Lefebvre

Maxime Montillet

A process for rejuvenating an at least partially spent catalyst resulting from a hydrodesulfurization process of a sulfur-containing olefinic gasoline cut, where the at least partially spent catalyst result is from a fresh catalyst a metal from group VIII, a metal from group VIb, and an oxide support, where the process includes

Method for regenerating a catalyst which is spent and regenerated by a hydrodesulfurization process of gasolines

The invention relates to a process for the rejuvenation of an at least partially spent catalyst resulting from a hydrotreating process, said at least partially spent catalyst resulting from a fresh catalyst comprising a metal from group VIII, a metal from group VIb, an oxide support, and optionally phosphorus, said at least partially spent catalyst additionally comprising carbon in a content of between 2% and 20% by weight, with respect to the total weight of the at least partially spent catalyst, and sulfur in a content of between 1% and 8% by weight, with respect to the total weight of the at least partially spent catalyst, said process comprising the following stages:

Method for rejuvenating a nonregenerated spent catalyst from a process for the hydrodesulfurization of gasolines

The invention relates to a process for the hydrodesulfurization of a sulfur-containing olefinic gasoline cut in which said gasoline cut, hydrogen and a regenerated catalyst are brought into contact, said process being carried out at a temperature of between 200&#xb0; C. and 400&#xb0; C., a total pressure of between 1 and 3 MPa, an hourly space velocity, defined as being the flow rate by volume of feedstock relative to the volume of catalyst, of between 1 and 10 h; and a hydrogen/gasoline feedstock ratio by volume of between 100 and 1200 SI/I, said regenerated catalyst resulting from an at least partially spent catalyst resulting from a process for the hydrodesulfurization of a sulfur-containing olefinic gasoline cut and comprises at least one metal from group VIII, at least one metal from group VIb and an oxide support.

Process for the hydrodesulfurization of sulfur-containing olefinic gasoline cuts using a regenerated catalyst

The invention concerns a method for rejuvenating an at least partially used catalyst originating from a hydroprocessing and/or hydrocracking process, the at least partially used catalyst being derived from a fresh catalyst comprising at least one group VIII metal (in particular, Co), at least one group VIB metal (in particular, Mo), an oxide support, and optionally phosphorus, the method comprising the steps: &#x22c5;a) regenerating the at least partially used catalyst in a gas stream containing oxygen at a temperature between 300&#xb0; C. and 550&#xb0; C. so as to obtain a regenerated catalyst, &#x22c5;b) then placing the regenerated catalyst in contact with phosphoric acid and an organic acid, each having acidity constant pKa greater than 1.5, &#x22c5;c) performing a drying step at a temperature less than 200&#xb0; C. without subsequently calcining it, so as to obtain a rejuvenated catalyst.

Method for rejuvenating a catalyst of a hydroprocessing and/or hydrocracking process

The invention relates to a process for the hydrodesulfurization of a sulfur-containing olefinic gasoline cut in which said gasoline cut, hydrogen and a rejuvenated catalyst are brought into contact, said hydrodesulfurization process being carried out at a temperature of between 200&#xb0; C. and 400&#xb0; C., a total pressure of between 1 and 3 MPa, an hourly space velocity, defined as being the flow rate by volume of feedstock relative to the volume of catalyst, of between 1 and 10 hand a hydrogen/gasoline feedstock ratio by volume of between 100 and 1200 Sl/l, said rejuvenated catalyst resulting from a hydrotreating process and comprises at least one metal from group VIII, at least one metal from group VIb, an oxide support and at least one organic compound containing oxygen and/or nitrogen and/or sulfur.

Process for the hydrosulfurization of sulfur-containing olefinic gasoline cuts using a regenerated catalyst having an organic compound

There is described a hydroprocessing process of at least one gas oil cut having a weighted mean temperature (TMP) between 240&#xb0; C. and 350&#xb0; C. using a catalyst comprising at least one metal of the group VIB and/or at least one metal of the group VIII of the periodic classification and a support comprising an amorphous mesoporous alumina having a connectivity (Z) greater than 2.7, the hydroprocessing process operating at a temperature between 250&#xb0; C. and 400&#xb0; C., at a total pressure between 2 MPa and 10 MPa with a ratio of hydrogen volume to volume of hydrocarbon-containing feedstock between 100 and 800 litres per litre and at an Hourly Volume Rate (HVR) which is defined by the ratio of the volume flow rate of liquid hydrocarbon-containing feedstock to volume of catalyst fed into the reactor between 1 and 10 h.

Method for the hydrotreatment of diesel cuts using a catalyst made from an amorphous mesoporous alumina having high connectivity

The present invention concerns a hydrotreatment catalyst comprising a support, at least one metal selected from group VIB and at least one metal selected from group VIII of the periodic table, the quantity of metal from group VIB, expressed as the oxides, being in the range 6% to 25% by weight with respect to the total catalyst weight, the quantity of metal from group VIII, expressed as the oxides, being in the range 0.5% to 7% by weight with respect to the total catalyst weight, the support comprising at least 90% by weight of alumina, in which said alumina is obtained from a mixed and extruded boehmite gel, and in which the specific surface area of said catalyst is in the range 60 to 250 m/g.

Hydrotreatment catalyst comprising a support obtained from an alumina gel and method for preparing said catalyst

The present application relates to a process for the selective hydrogenation of a gasoline which contains polyunsaturated compounds and sulphurous light compounds, the process allowing conjointly the hydrogenation of polyunsaturated compounds into mono-unsaturated compounds, increasing weight of the sulphurous light compounds by reaction with the unsaturated compounds, and maximization of the isomerization of the monounsaturated compounds comprising an external C&#x2550;C double bond into their internal C&#x2550;C double bond isomer, said process implementing a catalyst containing at least one group VIb metal and at least one group VIII metal deposited on a porous support.

Process for the selective hydrogenation of a gasoline

A process of hydrodesulphuration of at least one gasoline cut implementing a catalyst comprising, in its oxide form, at least one metal from group VIB and/or at least one metal from group VIII of the periodic table, present in the form of at least one polyoxometalate of the formula (HXMO), wherein X is an element selected from phosphorus, silicon, boron, nickel and cobalt, M is one or more element(s) selected from molybdenum, tungsten, nickel and cobalt, h is an integer from 0-12, x is an integer from 0-4, m is an integer 5, 6, 7, 8, 9, 10, 11, 12 and/or 18, y is an integer of 17-72 and q is an integer of 1-20, the polyoxometalates being present within a mesostructured silicon oxide matrix having a pore size of 1.5-50 nm and having amorphous walls of thickness 1-30 nm, the catalyst being sulphured before use in the process.

Process for hydrodesulphuration of gasoline cuts using a catalyst based on heteropolyanions trapped in a mesostructured silica support

Preparation of a catalyst having at least one metal from group VIII, at least one metal from group VIB and at least one support; in succession:

Process for hydrotreating a hydrocarbon cut with a boiling point of more than 250&#xb0; C. in the presence of a sulphide catalyst prepared using a cyclic oligosaccharide

Selective hydrogenation of a gasoline cut containing polyunsaturated hydrocarbons containing at least 2 carbon atoms per molecule and having an end point of 250&#xb0; C. or less, by bringing said gasoline cut into contact with at least one catalyst the active phase of which comprises at least one metal from group VIII and at least one metal from group VIB deposited on a support.

Process for selectively hydrogenating a gasoline cut in the presence of a supported sulphide catalyst prepared using at least one cyclic oligosaccharide

Hydrodesulphurization of a gasoline cut containing hydrocarbons containing at least 2 carbon atoms per molecule and having an end point of 250&#xb0; C. or less, by contacting the gasoline cut with at least one catalyst having an active phase of at least one metal from group VIII and at least one metal from group VIB deposited on a support, said catalyst being prepared using a process of:

Process for the hydrodesulphurization of a gasoline cut in the presence of a supported sulphide catalyst prepared using at least one cyclic oligosaccharide

The invention concerns a fixed bed process for capturing arsenic and for desulphurizing a hydrocarbon fraction comprising olefins, sulphur and arsenic, said process comprising a step a) for bringing a capture mass into contact with said hydrocarbon fraction in the presence of hydrogen, the ratio between the flow rate of hydrogen and the flow rate of the hydrocarbon fraction being in the range 50 to 800 Nm/m, the operating temperature being in the range 200&#xb0; C. to 400&#xb0; C., the operating pressure being in the range 0.2 to 5 MPa. The capture mass comprises molybdenum in a sulphurized form, nickel in a sulphurized form and at least one porous support selected from the group constituted by aluminas, silica, silica-aluminas, titanium oxide and magnesium oxide. The nickel content is in the range 10% to 28% by weight and the molybdenum content is in the range 0.3% to 2.1% by weight.

Two-step process for desulphurizing olefinic gasolines comprising arsenic

The invention is about a catalyst comprising at least one support, at least one group VIII element, at least one group VIB element and phosphorus, in which the density of group VIB elements per unit surface area of the support is in the range (limits included) 2&#xd7;10to 18&#xd7;10of oxides of group VIB elements per mof support, in which the molar ratio of phosphorus to the group VIB element is in the range 0.27 to 2.00, and in which the amount of group VIB elements is in the range (limits included) 1% to 20% by weight of oxides of group VIB elements and in which the support has a specific surface area of less than 135 m/g. The invention is also about a process for hydrodesulphurizing gasoline cuts containing sulphur and olefins in the presence of this catalyst.

Process for hydrodesulphurizing gasoline cuts containing sulphur and olefins in the presence of a catalyst comprising at least one support, one group VIII and one group VIB element

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Lyons, France

Elodie Devers