EP4634338A1 - Catalyseur d'hydrocraquage comprenant une zeolithe y specifique pour la production de naphta - Google Patents
Catalyseur d'hydrocraquage comprenant une zeolithe y specifique pour la production de naphtaInfo
- Publication number
- EP4634338A1 EP4634338A1 EP23810398.0A EP23810398A EP4634338A1 EP 4634338 A1 EP4634338 A1 EP 4634338A1 EP 23810398 A EP23810398 A EP 23810398A EP 4634338 A1 EP4634338 A1 EP 4634338A1
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- European Patent Office
- Prior art keywords
- catalyst
- weight
- zeolite
- catalyst according
- volume
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G47/00—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions
- C10G47/02—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions characterised by the catalyst used
- C10G47/10—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions characterised by the catalyst used with catalysts deposited on a carrier
- C10G47/12—Inorganic carriers
- C10G47/16—Crystalline alumino-silicate carriers
- C10G47/20—Crystalline alumino-silicate carriers the catalyst containing other metals or compounds thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/08—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y
- B01J29/10—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y containing iron group metals, noble metals or copper
- B01J29/14—Iron group metals or copper
- B01J29/146—Y-type faujasite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/08—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y
- B01J29/16—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J29/166—Y-type faujasite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J29/78—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J29/7815—Zeolite Beta
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/80—Mixtures of different zeolites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
- C01B39/20—Faujasite type, e.g. type X or Y
- C01B39/24—Type Y
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G47/00—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions
- C10G47/02—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions characterised by the catalyst used
- C10G47/10—Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions characterised by the catalyst used with catalysts deposited on a carrier
- C10G47/12—Inorganic carriers
- C10G47/16—Crystalline alumino-silicate carriers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G65/00—Treatment of hydrocarbon oils by two or more hydrotreatment processes only
- C10G65/02—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only
- C10G65/12—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including cracking steps and other hydrotreatment steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
- B01J2229/10—After treatment, characterised by the effect to be obtained
- B01J2229/20—After treatment, characterised by the effect to be obtained to introduce other elements in the catalyst composition comprising the molecular sieve, but not specially in or on the molecular sieve itself
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
- B01J2229/30—After treatment, characterised by the means used
- B01J2229/42—Addition of matrix or binder particles
Definitions
- the invention relates to a hydrocracking catalyst based on USY zeolite as well as its use for the production of naphtha by hydrocracking of petroleum cuts of the vacuum distillate and gas oil type.
- This type of process is particularly used in schemes intended for the conversion of hydrocarbon feedstocks for the production of petrochemical intermediates and gasoline fuels.
- Hydrocracking catalysts are generally classified on the basis of the nature of their acid function, in particular catalysts comprising an amorphous acid function of the silica alumina type and catalysts comprising a zeolite cracking function such as zeolite Y or zeolite beta.
- Hydrocracking catalysts are also classified based on the majority product obtained when used in a hydrocracking process, the two main products being middle distillates and naphtha.
- naphtha or naphtha cut is meant the petroleum fraction having a boiling point lower than the middle distillate cut.
- the middle distillate cut generally has a cut point between 150°C and 370°C to maximize kerosene and diesel production.
- the lower cut point of the middle distillate cut can be increased to increase naphtha yields.
- the naphtha cut can have boiling points between that of hydrocarbon compounds having 6 carbon atoms per molecule (or 68°C boiling point) up to 216°C and includes the gasoline cut.
- Patent US7611689 describes an FAU type Y zeolite, a catalyst comprising said zeolite, its preparation and its use in a hydrocracking process.
- FAU zeolite has a mesh parameter of between 24.40 and 24.50 angstroms ( ⁇ ), a silica to alumina molar ratio (SAR) of between 5 and 10, a BET specific surface area of between 650 and 900 m2 /g and an alkali metal content of less than 0.15% by weight. It is demonstrated that such zeolites have a high selectivity towards the naphtha cut and in particular a high selectivity towards the heavy naphtha cut, when they are used in a hydrocracking process.
- Patent application WO11067258 (Shell) describes the preparation of an FAU zeolite having a mesh parameter of between 24.42 and 24.52 angstroms ( ⁇ ), a silica to alumina molar ratio (SAR) of between 10 and 15, and a BET specific surface area of between 910 and 1020 m2/g. the family teaches that the catalyst comprising this zeolite is particularly selective towards the naphtha cut when it is used in a process for converting hydrocarbon cuts.
- Patent application WO040487988 (Shell) describes a hydrocracking process using a catalyst comprising a zeolite Y having a low mesh parameter of between 24.10 and 24.40 angstroms ( ⁇ ), a silica to alumina molar ratio (SAR) greater than 12 and preferably between 20 and 100 and a BET specific surface area greater than 850 m2/g and a microporous volume greater than 0.28 ml/g.
- WO040487988 teaches that zeolites having a low mesh parameter are known to be selective towards the middle distillate cut but less active than zeolites having a higher mesh parameter.
- the catalysts comprising zeolites with a low mesh parameter according to the invention of WO040487988 nevertheless make it possible to obtain high activity combined with good selectivity in middle distillates.
- Patent US7510645 describes a hydrocracking catalyst containing a Beta zeolite and a Y zeolite, the Y zeolite having a mesh parameter of between 24.38 and 24.50 angstroms ( ⁇ ), the catalyst being characterized by a ratio mass Y/Beta between 5 and 12.
- the catalyst has a relatively high proportion of zeolite Y per compared to the proportion of Beta zeolite. It is demonstrated that these catalysts have improved selectivity and activity compared to conventional commercial catalysts.
- a hydrocracking process using said catalysts at high temperature and high pressure to convert a hydrocarbon feed into a product having a lower boiling point and molecular weight.
- the product obtained comprises a large proportion of boiling component in the naphtha cut temperature range (C6-216°C).
- a catalyst comprising at least one hydro-dehydrogenating element chosen from the group formed by the elements of group VIB and non-noble group VIII of the periodic classification, and a support comprising at least one porous mineral matrix, a zeolite Y having an initial crystal parameter aO of the unit cell greater than or equal to 24.40 ⁇ , a BET specific surface area of between 850 and 1020 m2/g, a microporous volume determined by nitrogen adsorption greater than 0.28 ml/g and a Bronsted acidity greater than 600 micromole/g makes it possible to obtain improved selectivity towards the naphtha cut, in particular compared to catalysts of the state of the art.
- the present invention relates to a hydrocracking catalyst selective for the naphtha cut, comprising at least one hydro-dehydrogenating element chosen from the group formed by the elements of group VIB and non-noble group VIII taken alone or as a mixture of the periodic classification, and a support comprising at least one porous mineral matrix, a Y zeolite having an initial crystalline parameter aO of the unit cell of between 24.40 ⁇ and 24.52 ⁇ , a BET specific surface area of between 850 and 1020 m2/ g, a microporous volume determined by nitrogen adsorption greater than 0.28 ml/g and a Bronsted acidity greater than 600 micromole/g.
- Another object of the present invention is a process for hydrocracking a hydrocarbon feedstock in the presence of said catalyst.
- An advantage of the present invention is to provide a hydrocracking catalyst making it possible to obtain improved selectivity towards the naphtha cut when said catalyst is used in a hydrocracking process according to the invention, compared to state-of-the-art catalysts.
- the selectivity of hydrocracking catalysts for naphtha production is determined during a catalytic test and corresponds to the fraction, in weight percent, of the product boiling in the naphtha cut range, i.e. say between the boiling temperature of hydrocarbon compounds having 6 carbon atoms per molecule (or 68°C boiling point) up to 216°C, relative to the total mass of product leaving the process.
- the catalyst according to the invention also comprises a beta zeolite.
- An advantage of the advantageous embodiment of the present invention is to provide a hydrocracking catalyst comprising said Y zeolite having the specific characteristics claimed and a beta zeolite in a specific Y/beta mass ratio allowing not only the obtaining of a selectivity improved towards the naphtha cut when said catalyst is used in a hydrocracking process according to the invention, but also improved activity compared to the catalysts of the prior art.
- the different parameter ranges for a given step such as the pressure ranges and the temperature ranges can be used alone or in combination.
- a preferred range of pressure values can be combined with a more preferred range of temperature values.
- group VIII according to the CAS classification corresponds to the metals of columns 8, 9 and 10 according to the new IUPAC classification, and group VIB to the metals of column 6.
- the overall SiO2/AI2O3 molar ratio of a zeolite is also called SAR or silica-alumina ratio according to Anglo-Saxon terminology.
- the SiO2/Al2O3 molar ratio is measured by X-ray fluorescence.
- the catalyst comprises at least one hydro-dehydrogenating element chosen from the group formed by the non-noble elements of group VIB and group VIII of the periodic table, taken alone or as a mixture.
- the elements of group VIII are chosen from iron, cobalt, nickel, taken alone or in a mixture, and preferably from nickel and cobalt.
- the elements of group VIB are chosen from tungsten and molybdenum, taken alone or as a mixture.
- the following combinations of metals are preferred: nickel-molybdenum, cobalt-molybdenum, nickel-tungsten, cobalt-tungsten, and very preferably: nickel-molybdenum, nickel-tungsten. It is also possible to use combinations of three metals such as, for example, nickel-cobalt-molybdenum.
- the group VIII element content of the catalyst is advantageously between 0.5 and 8% by weight of oxide relative to the total weight of said catalyst, preferably between 0.5 and 6% by weight of oxide and so very preferred between 1.0 and 4% by weight of oxide.
- the group VIB element content of the catalyst is advantageously between 1 and 30% by weight of oxide relative to the total weight of said catalyst, preferably between 2 and 25% by weight of oxide, very preferably between 5 and 20% by weight of oxide, and even more preferably between 5 and 16% by weight of oxide.
- the catalyst used according to the invention may also contain a promoter element chosen from phosphorus, boron, silicon, very preferably phosphorus.
- a promoter element chosen from phosphorus, boron, silicon, very preferably phosphorus.
- the phosphorus content is advantageously between 0.5 and 10% by weight of P2O5 oxide relative to the weight total of said catalyst, preferably between 1 and 6% by weight of P2O5 oxide and more preferably between 1 and 4% by weight of P2O5 oxide.
- the catalyst according to the invention comprises a support which comprises and is preferably constituted by at least one porous mineral matrix, a zeolite Y, preferably a dealuminated zeolite USY, said zeolite Y having an initial crystal parameter aO of the unit cell between 24.40 ⁇ and 24.52 ⁇ , a BET specific surface area of between 850 and 1020 m2/g, a microporous volume greater than 0.28 ml/g and a Bronsted acidity greater than 600 micromole/g.
- the porous mineral matrix used in the catalyst support is advantageously made up of at least one refractory oxide, preferably chosen from the group formed by alumina, silica-alumina, clay, oxide titanium, boron oxide and zirconia, taken alone or in a mixture.
- the porous mineral matrix is chosen from alumina and silica-alumina, taken alone or as a mixture. More preferably, the porous mineral matrix is alumina.
- Alumina can advantageously be presented in all its forms known to those skilled in the art. Very preferably, the alumina is gamma alumina, for example boehmite.
- said support comprises from 15 to 55% by weight of binder, preferably from 25% to 50% by weight, and very preferably between 25% and 40% by weight, relative to the total weight of said support.
- the support comprises a zeolite Y having an initial crystal parameter aO of the unit cell of between 24.40 ⁇ and 24.52 ⁇ .
- the initial crystal parameter aO of the unit cell of the zeolite Y used is between 24.40 and 24.51 ⁇ , preferably between 24.43 and 24.51 ⁇ and very preferably between 24 .45 and 24.48 ⁇ .
- the initial crystal parameter aO of the unit cell of the zeolite Y given is the value of the initial crystal parameter aO of the zeolite Y used in the synthesis of the catalyst according to the invention.
- the initial crystalline parameter aO of the unit cell of the zeolite Y is measured by X-ray diffraction according to the ASTM 03942-80 standard.
- said zeolite Y has a specific surface area measured by nitrogen physisorption according to the B.E.T. method. between 850 and 1020 m2/g, preferably between 875 and 995 m2/g, and preferably between 900 and 970 m2/g.
- said zeolite Y has a microporous volume determined by nitrogen adsorption greater than 0.28 ml/g and preferably greater than 0.30 ml/g and advantageously greater than 0.31 ml/g and advantageously less than 0.34 ml/g.
- said zeolite Y has a Bronsted acidity greater than 600 micromole/g, preferably greater than 650 micromole/g, preferably greater than 700 micromole/g and very preferably greater than 760 micromole/g.
- said zeolite Y has a Bronsted acidity of less than 1000 micromole/g.
- said zeolite Y has a mesoporous volume greater than or equal to 0.18 ml/g, preferably between 0.18 and 0.27 ml/g, preferably between 0.20 and 0.26 ml/g. g and very preferably between 0.22 and 0.25 ml/g.
- said support has a content of zeolite Y, and preferably dealuminated zeolite USY, of between 15 to 80% by weight relative to the total weight of said support, preferably between 20 to 75% by weight, and preferably between 40% by weight. at 75% weight.
- the zeolite Y having the combination of particular characteristics defined above and suitable for the implementation of the catalyst support used in the process according to the invention is advantageously prepared according to methods of preparation known to those skilled in the art.
- the zeolite Y having the combination of particular characteristics defined above and suitable for the implementation of the catalyst support used in the process according to the invention is obtained according to a preparation process comprising several stages. Among these steps, mixing in an aqueous medium, at least one alkali metal, at least one organic compound R, R being a quaternary ammonium formed of carbon chains comprising between 1 and 4 carbon atoms, at least one source of silicon SiO2, and at least one source of aluminum AI2O3, makes it possible to obtain a homogeneous mixture called precursor gel.
- This precursor gel can undergo an optional maturation step and an optional step of adding seeds of a zeolite of structural type FAU. At the end of these optional steps, the precursor gel undergoes a hydrothermal treatment until said zeolite Y is formed.
- said catalyst has a content of at least one porous mineral matrix of between 4 and 81% by weight relative to the total weight of said catalyst.
- the support can advantageously be shaped by any technique known to those skilled in the art.
- the shaping can be carried out for example by extrusion, by pelletizing, by the oil-drop coagulation method, by granulation on a turntable or by any other method well known to those skilled in the art.
- the support is preferably shaped in the form of grains of different shapes and dimensions. They are generally used in the form of cylindrical or polylobed extrudates. such as, trilobed, quadrilobed or polylobed in a straight or twisted shape, but can possibly be manufactured and used in the form of crushed powders, tablets, rings, balls, wheels. However, it is advantageous for the catalyst to be in the form of extrudates with a diameter of between 0.5 and 5 mm and more particularly between 0.7 and 3 mm and even more particularly between 1.0 and 2.5 mm.
- the shapes are cylindrical (which can be hollow or not), twisted cylindrical, multilobed (2, 3, 4 or 5 lobes for example), rings. Any other form can be used.
- One of the preferred shaping methods consists of co-kneading said zeolites with the binder, preferably alumina, in the form of a wet gel for a few tens of minutes, preferably between 10 and 40 minutes, then passing the paste as well. obtained through a die to form extrudates with a diameter preferably between 0.5 and 5 mm.
- the binder preferably alumina
- said zeolites can be introduced during the synthesis of the porous mineral matrix.
- said Y and Beta zeolites are added during the synthesis of a porous mineral matrix, such as for example a silico-aluminum matrix: in this case, said zeolites can advantageously be added to a mixture composed of an alumina compound in an acid medium with a completely soluble silica compound.
- the introduction of the elements of group VIB and/or VIII can optionally take place during the shaping step, by addition of at least one compound of said element, so as to introduce at least a part of said element.
- the introduction of at least one hydro-dehydrogenating element can advantageously be accompanied by that of at least one promoter element chosen from phosphorus, boron, silicon and preferably phosphorus and optionally by the introduction of an element from the group VI IA and/or VB.
- the shaped solid is optionally dried at a temperature of between 60 and 250°C and optionally calcined at a temperature of 250 to 800°C for a period of between 30 minutes and 6 hours.
- the step of introducing at least one hydro-dehydrogenating element is advantageously carried out by a method well known to those skilled in the art, in particular by one or more operations of impregnation of the shaped and calcined or dried support, and preferably calcined, with a solution containing the precursors of group VIB elements and/or VIII, optionally the precursor of at least one promoter element and optionally the precursor of at least one element of group VI IA and/or group VB.
- said step d) is carried out by a dry impregnation method with a solution containing the precursors of the hydro/dehydrogenating function, that is to say elements of group VIB and/or VIII, optionally followed by a drying step and preferably without a calcination step.
- non-noble group VIII elements which can be used are well known to those skilled in the art.
- non-noble metals we will use nitrates, sulfates, hydroxides, phosphates, halides such as chlorides, bromides and fluorides, carboxylates such as acetates and carbonates.
- Another subject of the present invention also relates to a process for hydrocracking at least one hydrocarbon feedstock, preferably in liquid form, of which at least 50% by weight of the compounds have an initial boiling point greater than 300°C. and a final boiling point below 650°C, at a temperature between 200°C and 480°C, at a total pressure between 1 MPa and 25 MPa, with a ratio volume of hydrogen per volume of hydrocarbon feed between 80 and 5000 liters per liter and at an Hourly Volume Speed (WH) defined by the ratio of the volume flow of hydrocarbon feed, preferably liquid, to the volume of catalyst loaded into the reactor of between 0.1 and 50 h- 1, in the presence of the catalyst according to the invention.
- WH Hourly Volume Speed
- fillers from renewable origins (such as vegetable oils, animal fats, hydrothermal conversion oil or lignocellulosic biomass pyrolysis oil) as well as plastic pyrolysis oils.
- Said fillers preferably have a boiling point T5 greater than 300°C, preferably greater than 340°C, that is to say that 95% of the compounds present in the filler have a boiling point greater than 300°C , and preferably greater than 340°C.
- the nitrogen content of the feeds treated in the processes according to the invention is advantageously greater than 500 ppm by weight, preferably between 500 and 10000 ppm by weight, more preferably between 700 and 4000 ppm by weight and even more preferably between 1000 and 4000 ppm weight.
- the sulfur content of the charges treated in the processes according to the invention is advantageously between 0.01 and 5% by weight, preferably between 0.2 and 4% by weight and even more preferably between 0.5 and 3% by weight. % weight.
- the content of nitrogen, sulfur, metals or asphaltenes of the liquid injected into the process according to the invention using the catalyst according to the invention is reduced.
- the organic nitrogen content of the feed treated in the hydrocracking process according to the invention is then comprised, after hydrotreatment, between 0 and 200 ppm, preferably between 0 and 50 ppm, and even more preferably between 0 and 30 ppm.
- the sulfur content is preferably less than 1000 ppm and that of asphaltene is preferably less than 200 ppm while the metal content (Ni or V) is less than 1 ppm.
- the hydrocracking process according to the invention may comprise a fractionation step between the pretreatment of the feed and the hydrocracking reactor(s) using the catalyst according to the invention.
- the nitrogen and the sulfur eliminated liquid after the pretreatment is injected in the form of NH3 and H2S into the reactor(s) containing the catalyst according to the invention.
- the hydrocracking process of said hydrocarbon feed according to the invention is carried out at a temperature between 200°C and 480°C, at a total pressure between 1 MPa and 25 MPa, with a ratio volume of hydrogen per volume of hydrocarbon feed of between 80 and 5000 liters per liter and at an Hourly Volume Velocity (WH) defined by the ratio of the volume flow of hydrocarbon feed per the volume of catalyst loaded into the reactor between 0.1 and 50 h-1.
- WH Hourly Volume Velocity
- the hydrocracking process according to the invention operates in the presence of hydrogen, at a temperature between 250 and 480°C, preferably between 320 and 450°C, very preferably between 330 and 435°C. , under a pressure of between 2 and 25 MPa, preferably between 3 and 20 MPa, at a space speed of between 0.1 and 20 h-1, preferably 0.1 and 6 h-1, preferably between 0.2 and 3 h-1, and the quantity of hydrogen introduced is such that the volume ratio liter of hydrogen/liter of hydrocarbon is between 100 and 2000 L/L.
- the process can be carried out in one step or two steps depending on the conversion level of the targeted feedstock, with or without recycling of the unconverted fraction.
- the catalyst according to the invention can be used in a non-limiting manner in one or both stages of the hydrocracking process, alone or in combination with another hydrocracking catalyst.
- the support for catalyst A is prepared by shaping by kneading-extrusion of 70% by weight of USY zeolite having a mesh parameter of 24.53 ⁇ , a silica to alumina molar ratio (SAR) of 9, a specific surface area measured by physisorption of nitrogen according to the B.E.T method. of 925 m2/g, a microporous volume determined by nitrogen adsorption of 0.32 ml/g, a mesoporous volume determined by nitrogen adsorption of 0.12 ml/g and a Bronsted acidity of 852 pmol/g in presence of commercial boehmite (Pural SB3, Sasol).
- SAR silica to alumina molar ratio
- the extrudates obtained are dried at 80°C then calcined at 600°C in humid air (5% weight of water per kg of dry air).
- the calcined support comprises, on a dry basis, 70% by weight of zeolite, and 30% by weight of alumina.
- Catalyst A is prepared by dry impregnation of the support thus obtained using an aqueous solution containing the elements Ni, Mo. This solution is obtained by dissolving the following precursors in water: nickel nitrate, and heptamolybdate d 'ammonium. The quantity of precursors in solution is adjusted according to the concentrations targeted on the final catalyst. After dry impregnation, the catalyst is dried at 120°C in air.
- the mass percentages in the catalyst are respectively: 15.1% by weight of molybdenum (in Mo03 form), 3.3% by weight of nickel (in NiO form) on a dry basis.
- the support for catalyst B is prepared by shaping by kneading-extrusion of 70% by weight of USY zeolite having a mesh parameter of 24.48 ⁇ , a silica to alumina molar ratio (SAR) of 6, a specific surface area measured by physisorption of nitrogen according to the BET method of 827 m2/g, a microporous volume determined by nitrogen adsorption of 0.27 ml/g, a mesoporous volume determined by nitrogen adsorption of 0.16 ml/g and an acidity Bronsted of 614 pmol/g in the presence of commercial boehmite (Pural SB3, Sasol).
- SAR silica to alumina molar ratio
- the extrudates obtained are dried at 80°C then calcined at 600°C in humid air (5% weight of water per kg of dry air).
- the calcined support comprises, on a dry basis, 70% by weight of USY zeolite, and 30% by weight of alumina.
- Catalyst B is prepared by dry impregnation of the support thus obtained using an aqueous solution containing the elements Ni, Mo. This solution is obtained by dissolving the following precursors in water: nickel nitrate, and heptamolybdate d 'ammonium. The quantity of precursors in solution is adjusted according to the concentrations targeted on the final catalyst. After dry impregnation, the catalyst is dried at 120°C in air.
- the mass percentages in the catalyst are respectively: 15.1% by weight of molybdenum (in Mo03 form), 3.3% by weight of nickel (in NiO form) on a dry basis.
- the support of catalyst C is prepared by shaping by kneading-extrusion of 70% by weight of USY zeolite having a mesh parameter of 24.48 ⁇ , a silica to alumina molar ratio (SAR) of 6, a specific surface area measured by physisorption of nitrogen according to the B.E.T method of 847 m2/g, a microporous volume determined by nitrogen adsorption of 0.29 ml/g, a mesoporous volume determined by nitrogen adsorption of 0.11 ml/g and an acidity Bronsted of 420 pmol/g, in the presence of commercial boehmite (Pural SB3, Sasol).
- SAR silica to alumina molar ratio
- the extrudates obtained are dried at 80°C then calcined at 600°C in humid air (5% weight of water per kg of dry air).
- the calcined support comprises, on a dry basis, 70% by weight of USY zeolite, and 30% by weight of alumina.
- Catalyst C is prepared by dry impregnation of the support thus obtained using an aqueous solution containing the elements Ni, Mo. This solution is obtained by dissolving the following precursors in water: nickel nitrate, and heptamolybdate d 'ammonium. The quantity of precursors in solution is adjusted according to the concentrations targeted on the final catalyst. After dry impregnation, the catalyst is dried at 120°C in air.
- the mass percentages in the catalyst are respectively: 15.1% by weight of molybdenum (in Mo03 form), 3.3% by weight of nickel (in NiO form) on a dry basis.
- the support for catalyst D is prepared by shaping by kneading-extrusion of 70% by weight of USY zeolite having a mesh parameter 24.47 ⁇ , a silica to alumina molar ratio (SAR) of 9, a specific surface area measured by physisorption of nitrogen according to the BET method of 931 m2/g, a microporous volume determined by nitrogen adsorption of 0.31 ml/g, a mesoporous volume determined by nitrogen adsorption of 0.24 ml/g and a Bronsted acidity of 698 pmol/g in the presence of commercial boehmite Pural SB3.
- SAR silica to alumina molar ratio
- the extrudates obtained are dried at 80°C then calcined at 600°C in humid air (5% by weight of water per kg of dry air).
- the calcined support comprises, on a dry basis, 70% by weight of USY zeolite, and 30% by weight of alumina.
- Catalyst D is prepared by dry impregnation of the support thus obtained using an aqueous solution containing the elements Ni, Mo. This solution is obtained by dissolving the following precursors in water: nickel nitrate, and heptamolybdate d 'ammonium. The quantity of precursors in solution is adjusted according to the concentrations targeted on the final catalyst. After dry impregnation, the catalyst is dried at 120°C in air.
- the mass percentages in the catalyst are respectively: 15.0% by weight of molybdenum (in Mo03 form), 3.2% by weight of nickel (in NiO form) on a dry basis.
- the support of catalyst E is prepared by shaping by kneading-extrusion of 60% by weight of USY zeolite having a mesh parameter 24.47 ⁇ , a silica to alumina molar ratio (SAR) of 9, a specific surface area measured by physisorption of nitrogen according to the B.E.T. method.
- SAR silica to alumina molar ratio
- Beta zeolite having a molar SiO2/Al2O3 ratio of 25, a specific surface area measured by nitrogen physisorption according to the B.E.T. method. of 670 m2/g, in the presence of commercial boehmite (PuralSB3, Sasol).
- the extrudates obtained are dried at 80°C then calcined at 600°C in humid air (5% by weight of water per kg of dry air).
- Catalyst E is prepared by dry impregnation of the support thus obtained using an aqueous solution containing the elements Ni, Mo. This solution is obtained by dissolving the following precursors in water: nickel nitrate, and heptamolybdate d 'ammonium. There The quantity of precursors in solution is adjusted according to the concentrations targeted on the final catalyst.
- the mass percentages in the catalyst are respectively: 15.0% by weight of molybdenum (in Mo03 form), 3.2% by weight of nickel (in NiO form) on a dry basis.
- the support of catalyst F is prepared by shaping by kneading-extrusion of 70% by weight of USY zeolite having a mesh parameter of 24.46 ⁇ , a silica to alumina molar ratio (SAR) of 8.1, a specific surface area measured by physisorption of nitrogen according to the B.E.T method. of 810 m2/g, a microporous volume determined by nitrogen adsorption of 0.27 ml/g, a mesoporous volume determined by nitrogen adsorption of 0.14 ml/g and a Bronsted acidity of 510 pmol/g in presence of commercial boehmite (Pural SB3, Sasol).
- SAR silica to alumina molar ratio
- the extrudates obtained are dried at 80°C then calcined at 600°C in humid air (5% by weight of water per kg of dry air).
- the calcined support comprises, on a dry basis, 70% by weight of USY zeolite, and 30% by weight of alumina.
- Catalyst F is prepared by dry impregnation of the support thus obtained using an aqueous solution containing the elements Ni, Mo. This solution is obtained by dissolving the following precursors in water: nickel nitrate, and heptamolybdate d 'ammonium. The quantity of precursors in solution is adjusted according to the concentrations targeted on the final catalyst.
- the mass percentages in the catalyst are respectively: 15.0% by weight of molybdenum (in Mo03 form), 3.2% by weight of nickel (in NiO form) on a dry basis.
- the performances of the catalysts described above are evaluated by hydrocracking a feed comprising a vacuum distillate and gas oil fraction in one step using a pilot isothermal test unit in downflow configuration.
- This test load undergoes hydrotreatment (HDT). After this hydrotreatment step, the test load has a density at 15°C of 0.8755 g/mL, a residual nitrogen content of 23 ppm wt and a residual sulfur content of 16 ppm wt.
- the initial point of the Simulated distillation for this test load after hydrotreatment is 163.3°C and the end point is 578.7°C.
- the 50% weight point of the simulated distillation is at 391.7°C.
- the test charge is added respectively with DMDS and aniline so as to obtain 8820 ppm wt of sulfur and 1900 ppm weight of nitrogen in the final additive charge.
- Each catalyst is evaluated separately and is sulphurized prior to the hydrocracking test under SRGO load or straight run gas oil, i.e. gas oil from the direct distillation of petroleum with an additive of 4% by weight of dimethyl sulphide (DMDS) and 2% by weight aniline.
- the operating conditions are adjusted to those used for the hydrocracking test: WH of 1.5 h-1, an H2/charge volume ratio of 1000 NL/L, a total pressure of 140 bar (i.e. 14.0 MPa).
- the temperature of the reactors is adjusted so as to target a net conversion of the 216°C+ fraction of 65% by weight after 150 hours under load.
- Net conversion is defined as the cut yield (or fraction) of boiling point less than 216°C minus the cut yield of boiling point less than 216°C present in the test load.
- the performances of the catalysts are compared to that of catalyst D taken as a reference and reported in Table 1.
- the relative activity in degrees Celsius (°C) is obtained by difference in temperatures between the catalyst to be evaluated and that obtained for the reference catalyst D to obtain a net conversion of 65%.
- the relative yield in the 68-216°C cut is taken as the difference between the yields obtained at 65% net conversion weight of the 216°C+ cut. A positive value induces greater activity or output.
- catalyst D according to the invention consisting of a USY zeolite with a mesh parameter of 24.47 ⁇ , a BET surface area of 931 m2/g, a microporous volume of 0.31 ml /g and an acidity of 698 pmol/g, presents a systematic gain in activity compared to comparative catalysts B and C without degradation of yield and a gain in selectivity towards the naphtha cut compared to comparative catalyst A without degradation of activity.
- Beta zeolite added to the USY zeolite according to the invention demonstrates that the presence of Beta, the USY zeolite used in the catalyst according to the invention also leads to high performance both in activity and in selectivity. towards the naphtha cut and superior to those obtained with catalysts of the prior art.
- the comparative catalyst F having an acidity, microporous volume and SBET not in accordance with the invention, presents a lower activity compared to the catalyst D in accordance with the invention.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2213171A FR3142916B1 (fr) | 2022-12-12 | 2022-12-12 | Catalyseur d’hydrocraquage comprenant une zeolithe y specifique pour la production de naphta |
| PCT/EP2023/083095 WO2024126013A1 (fr) | 2022-12-12 | 2023-11-27 | Catalyseur d'hydrocraquage comprenant une zeolithe y specifique pour la production de naphta |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4634338A1 true EP4634338A1 (fr) | 2025-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23810398.0A Pending EP4634338A1 (fr) | 2022-12-12 | 2023-11-27 | Catalyseur d'hydrocraquage comprenant une zeolithe y specifique pour la production de naphta |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP4634338A1 (fr) |
| JP (1) | JP2025540823A (fr) |
| CN (1) | CN120303376A (fr) |
| FR (1) | FR3142916B1 (fr) |
| TW (1) | TW202440225A (fr) |
| WO (1) | WO2024126013A1 (fr) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3308069A (en) | 1964-05-01 | 1967-03-07 | Mobil Oil Corp | Catalytic composition of a crystalline zeolite |
| US5139759A (en) | 1991-12-19 | 1992-08-18 | Uop | Synthesis of zeolite beta |
| FR2852971B1 (fr) | 2003-03-25 | 2005-06-03 | Centre Nat Rech Scient | Procede pour le depot par cvd d'un film d'argent sur un substrat |
| US7611689B2 (en) | 2004-09-24 | 2009-11-03 | Shell Oil Company | Faujasite zeolite, its preparation and use in hydrocracking |
| US7510645B2 (en) | 2005-11-04 | 2009-03-31 | Uop Llc | Hydrocracking catalyst containing beta and Y zeolites, and process for its use to produce naphtha |
| US9340734B2 (en) | 2009-12-03 | 2016-05-17 | Shell Oil Company | Faujasite zeolite preparation process |
-
2022
- 2022-12-12 FR FR2213171A patent/FR3142916B1/fr active Active
-
2023
- 2023-11-27 JP JP2025533568A patent/JP2025540823A/ja active Pending
- 2023-11-27 WO PCT/EP2023/083095 patent/WO2024126013A1/fr not_active Ceased
- 2023-11-27 CN CN202380084678.XA patent/CN120303376A/zh active Pending
- 2023-11-27 EP EP23810398.0A patent/EP4634338A1/fr active Pending
- 2023-12-12 TW TW112148184A patent/TW202440225A/zh unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN120303376A (zh) | 2025-07-11 |
| TW202440225A (zh) | 2024-10-16 |
| FR3142916A1 (fr) | 2024-06-14 |
| WO2024126013A1 (fr) | 2024-06-20 |
| JP2025540823A (ja) | 2025-12-16 |
| FR3142916B1 (fr) | 2024-11-08 |
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