A hydrogenation catalyst carrier

Abstract

The present invention discloses a hydrogenation catalyst carrier, which is prepared by a Y / SAPO-34 / ASP composite material containing a crystalline pore wall structure and an aluminum sol. The Y / SAPO-34 / ASP composite material preparation method containing a crystalline pore wall structure is as follows: (1) the slurry after Y molecular sieve, long-chain surfactant, and alkaline aqueous solution mixed treatment is uniformly adsorbed on macroporous silica gel to prepare a Y / silica gel solid mixture; (2) the Y / silica gel solid mixture is a silicon-aluminum source, mixed with a template, phosphoric acid, an aluminum source, and water, and pH is adjusted. After crystallization, a Y / SAPO-34 composite material slurry is obtained; (3) the Y / SAPO-34 composite material slurry is mixed with a silicon source and a long-chain surfactant, and pH is adjusted. After crystallization, a Y / SAPO-34 / ASP composite material containing a crystalline pore wall structure is obtained. In this technology, the aluminum sol can be highly dispersed, improves bonding effect, and reduces the loss of pore volume during carrier molding.

Description

Technical Field

[0001] The invention belongs to the technical field of catalyst carriers, and particularly relates to a hydrogenation catalyst carrier. Background Art

[0002] Hydrogenation catalyst supports are typically prepared by mechanically mixing molecular sieves, amorphous silica-alumina, alumina, and a binder. The mixture is then kneaded, rolled, and extruded into strips, followed by drying and calcination. However, mechanical mixing methods suffer from uneven material dispersion, prolonged rolling times, significant losses in surface area and pore volume, and poor pore connectivity. Supports prepared using molecular sieve composite materials exhibit improved pore connectivity, high surface area and pore volume retention, and large pore diameters, which improve support performance.

[0003] CN201410711529 discloses a hydrocracking catalyst carrier and its preparation method. The catalyst carrier utilizes a modified Y-type molecular sieve with large crystals, high silicon content, and a concentrated effective pore size distribution as its primary cracking component. The hydrocracking catalyst prepared from this carrier is suitable as a hydrocracking catalyst for the flexible production of high-quality heavy naphtha, jet fuel, and diesel, exhibiting high activity and selectivity. This technology has the following drawbacks or shortcomings relative to the present invention: The metal loading method utilizes a conventional isovolumetric impregnation method, resulting in a high metal content and a low specific surface area of ​​the carrier material after metal loading. This technology also has the drawback of not forming a mesoporous structure rich in crystalline pore walls, resulting in a low content of mesopore channels.

[0004] CN201811521961.1 A hydrocracking catalyst and its preparation method and application, the catalyst comprising a carrier, an active component, and silica formed by calcining after loading silane, wherein the carrier contains Y molecular sieve and SAPO-34 molecular sieve; the active component comprises a Group VIB metal and a Group VIII metal, and the weight content of the silica formed by calcining after loading silane in the catalyst is 0.5wt% to 5wt%. The preparation method of the hydrocracking catalyst comprises: (1) uniformly mixing materials containing Y molecular sieve and SAPO-34 molecular sieve, adding an acidic solution, and drying and calcining after forming to obtain a carrier; (2) introducing the active component into the carrier prepared in step (1), wherein the active component comprises a Group VIB and Group VIII metal, and drying and calcining after introduction to obtain a hydrocracking catalyst. The catalyst prepared by this method has a good match between reaction activity and oil selectivity during the hydrocracking reaction, and the product has excellent properties. The defects of this technology or the shortcomings relative to the present invention are: this method is only a mechanical mixing of Y molecular sieve and SAPO-34 molecular sieve. The defect of this technology is that it does not form a mesoporous structure rich in crystal pore walls, the mesoporous channel content is low, and it is mainly used for the production of more intermediate distillates.

[0005] CN201811522285.X A hydrocracking catalyst carrier and its preparation method and application, the carrier contains Y molecular sieve and SAPO-34 molecular sieve, with the weight content of Y molecular sieve being 2wt% to 35wt% and the content of SAPO-34 molecular sieve being 2wt% to 25wt% based on the carrier. The preparation method of the carrier comprises: mixing the materials containing Y molecular sieve and SAPO-34 molecular sieve evenly, adding an acidic solution for molding, and drying and calcining after molding to obtain a hydrocracking catalyst carrier. The catalyst prepared by this carrier has high reactivity, medium oil selectivity and excellent product properties in the hydrocracking reaction process. The defects of this technology or the shortcomings relative to the present invention are: this method is only a mechanical mixing of Y molecular sieve and SAPO-34 molecular sieve. The defect of this technology is that a mesoporous structure rich in crystal pore walls is not formed, the mesopore channel content is low, and it is mainly used to produce more middle distillates. Summary of the Invention

[0006] The object of the present invention is to provide a hydrogenation catalyst carrier to solve the problem that the existing carrier does not form a mesoporous structure rich in crystal pore walls and has a low mesopore channel content.

[0007] To achieve the above object, the present invention provides a hydrogenation catalyst carrier, which is prepared from a Y / SAPO-34 / ASP composite material having a crystalline pore wall structure and an aluminum sol. The preparation method of the Y / SAPO-34 / ASP composite material having a crystalline pore wall structure comprises the following steps:

[0008] (1) The slurry after the Y molecular sieve, long-chain surfactant, and alkaline aqueous solution are uniformly adsorbed on the macroporous silica gel to prepare a Y / silica gel solid mixture;

[0009] (2) The Y / silica gel solid mixture obtained in step (1) is used as a silicon-aluminum source, mixed with a template, phosphoric acid, an aluminum source, and water, wherein the silicon-aluminum source is calculated as SiO2, the phosphoric acid is calculated as P2O5, and the aluminum source is calculated as Al2O3, and the molar ratio of the feed materials is controlled to be (1-1.5)Al2O3:(1-1.5)P2O5:(1-1.5)SiO2:(1-2)template:(40-80)H2O, the pH is adjusted, and after crystallization, a Y / SAPO-34 composite material slurry is obtained;

[0010] (3) The Y / SAPO-34 composite material slurry obtained in step (2) is mixed with a silicon source and a long-chain surfactant in a mass ratio of 1:(0.01-0.1):(0.01-0.1), the pH is adjusted, and after crystallization, a Y / SAPO-34 / ASP composite material containing a crystalline pore wall structure is obtained.

[0011] The hydrogenation catalyst carrier of the present invention comprises the following steps: step (1) preparing materials according to a mass ratio of Y molecular sieve: long-chain surfactant: alkali: water of 1: (0.05-0.1): (0.05-0.2): (5-10); mixing the materials; stirring at 70-90° C. for 4-10 hours to obtain a mixed slurry containing Y molecular sieve microcrystals; dispersing the mixed slurry in a container by a high-pressure, airflow crushing method to form a humid atmosphere; and then adsorbing the mixed slurry on macroporous silica gel to obtain a Y / silica gel solid mixture.

[0012] The hydrogenation catalyst carrier of the present invention comprises the following steps: in step (2), phosphoric acid is added to water, and then an aluminum source is added and stirred to form a solution B; a Y / silica gel solid mixture, a template and water are mixed to obtain a solid-liquid mixture C; the solid-liquid mixture C is added to the solution B, the pH is adjusted and crystallization is carried out.

[0013] The hydrogenation catalyst carrier of the present invention, in step (2), the pH value is adjusted to 6.5-7.5, and crystallization is carried out at 150-200° C. for 12-24 hours to obtain a Y / SAPO-34 composite material slurry.

[0014] The hydrogenation catalyst support of the present invention, in step (3), the pH is adjusted to 8-10, and crystallization is carried out at 80-100° C. with stirring for 10-24 hours to obtain a Y / SAPO-34 / ASP composite material containing a crystalline pore wall structure, wherein ASP is a mesoporous amorphous silicon-phosphorus-aluminum oxide.

[0015] The hydrogenation catalyst carrier of the present invention further comprises the steps of filtering, washing, ammonium ion exchange and calcination after crystallization in step (3).

[0016] The hydrogenation catalyst carrier of the present invention is calcined at 500-550° C. for 3-5 hours.

[0017] The hydrogenation catalyst carrier of the present invention is prepared by placing 10-20 wt% aluminum sol into a high-pressure container, pressurizing it to 2-6 MPa, and then spraying it. 3 / min high-speed airflow is broken and carried out to form a wet atmosphere of aluminum sol in the container. The Y / SAPO-34 / ASP composite material containing a crystal pore wall structure and macroporous alumina powder are evenly mixed and placed in the container for full and uniform adsorption to obtain a hydrogenation catalyst carrier after molding.

[0018] The hydrogenation catalyst carrier of the present invention has a specific surface area of ​​450-610m 2 / g, pore volume 0.50~0.80mL / g, pore size distribution 4~15nm.

[0019] The hydrogenation catalyst carrier of the present invention comprises a long-chain surfactant comprising one or more of cetyltrimethylammonium bromide, PEG1000 and PEG2000; an aluminum source comprising pseudo-boehmite; a silicon source comprising silica sol and / or water glass; and a template comprising one or more of triethylamine, morpholine and tetraethylammonium hydroxide.

[0020] Beneficial effects of the present invention:

[0021] This technology uses a Y / SAPO-34 / ASP composite material with a crystal pore wall structure to prepare a hydrogenation catalyst carrier. The carrier contains a mesoporous structure of Y molecular sieve and SAPO-34 molecular sieve microcrystals, which improves the mesopore stability of the carrier. Because the aluminum sol in this technology can be highly dispersed, the bonding effect is improved and the loss of pore volume during the carrier molding process is reduced. The prepared carrier has a specific surface area of ​​450-610m 2 / g, pore volume 0.50~0.80mL / g, pore size distribution 4~15nm, which improves the specific surface area, pore volume and pore size of the carrier. DETAILED DESCRIPTION

[0022] The present invention is described in detail below by way of examples. It is necessary to point out that the following examples are only used to further illustrate the present invention and are not to be construed as limiting the scope of protection of the present invention. Those skilled in the art may make some non-essential improvements and adjustments to the present invention based on the above disclosure.

[0023] Example 1

[0024] (1) Using a unit cell of 24.32 and a specific surface area of ​​550m 2 / g, a pore volume of 0.40 mL / g, and an average pore diameter of 2.6 nm, Y molecular sieve, according to the mass ratio of Y molecular sieve: hexadecyltrimethylammonium bromide: potassium hydroxide: water of 1:0.05:0.05:5, the Y molecular sieve is dispersed in an aqueous solution of hexadecyltrimethylammonium bromide and potassium hydroxide, and stirred at a constant temperature of 70 ° C for 10 h to obtain a mixed slurry containing Y molecular sieve microcrystals;

[0025] (2) Add the mixed slurry containing Y molecular sieve microcrystals into the container, pressurize it to 2MPa, spray the solution, and then spray it at a flow rate of 10m / s perpendicular to the spray direction of the mixed slurry. 3 / min high-speed air flow is carried out after breaking it up to form a humid atmosphere in the container, so that the macroporous silica gel with a pore volume of 1.0ml / g is placed in the humid atmosphere, so that the macroporous silica gel can fully absorb the above-mentioned mixed slurry. The mass of the mixed slurry is 1% of the mass of the macroporous silica gel, and a Y / silica gel solid mixture A is obtained.

[0026] (3) 23 g of phosphoric acid was added to 41 g of deionized water, followed by 13.5 g of aluminum sol (65% Al2O3), and the mixture was stirred thoroughly for 5 hours to form solution B. 6 g of Y / silica gel solid mixture A was mixed with 15 g of triethylamine and 50 g of water to obtain a solid-liquid mixture C. The solid-liquid mixture C was added to solution B, and the pH was adjusted to 6.5 to obtain a solid-liquid mixture D, which was crystallized at 200°C for 12 hours to obtain a Y / SAPO-34 molecular sieve composite slurry.

[0027] (4) 10 g of silica sol (SiO2 content 30 wt%) and 3 g of PEG2000 were added to the above Y / SAPO-34 molecular sieve composite material slurry, the pH value of the system was adjusted to 10, and the mixture was stirred and crystallized at 80 ° C for 24 hours. The product was filtered, washed, and ammonium ion exchanged, and calcined at 500 ° C for 4 hours to obtain a mesoporous Y / SAPO-34 / ASP composite material with a crystalline pore wall structure and a specific surface area of ​​680 m 2 / g, pore volume 0.60mL / g, pore size distribution 4~12nm.

[0028] (5) 27 g of the prepared Y / SAPO-34 / ASP composite material containing a crystalline pore wall structure and 27 g of macroporous alumina (specific surface area 400 m 2 / g, pore volume 1.0mL / g, pore size distribution 4-8nm) were mixed evenly and placed in a container, and then 50g of 10wt% aluminum sol was placed in the container and pressurized to 2MPa and then sprayed out, and then the flow rate was 10m 3 / min high-speed airflow is carried out to form a moist atmosphere of aluminum sol in the container, so that the composite material and alumina are fully and evenly adsorbed. After molding, a hydrogenation catalyst carrier with a specific surface area of ​​610m 2 / g, pore volume 0.50mL / g, pore size distribution 4~12nm.

[0029] Example 2

[0030] (1) Using a unit cell of 24.37 and a specific surface area of ​​560m 2 / g, a pore volume of 0.41 mL / g, and an average pore size of 2.7 nm, Y molecular sieve, according to the mass ratio of Y molecular sieve: PEG2000: potassium hydroxide: water of 1:0.07:0.07:5, the Y molecular sieve was dispersed in an aqueous solution of PEG2000 and potassium hydroxide, and stirred at a constant temperature of 80 ° C for 7 h to obtain a mixed slurry containing Y molecular sieve microcrystals;

[0031] (2) Add the mixed slurry containing Y molecular sieve microcrystals into the container, pressurize it to 4 MPa, spray the solution, and then spray it at a flow rate of 15 m / s perpendicular to the spray direction of the mixed slurry. 3 / min high-speed airflow is then ejected after fragmentation, creating a humid atmosphere in the container. Macroporous silica gel with a pore volume of 2.5 ml / g is placed in the humid atmosphere container, allowing the macroporous silica gel to fully absorb the mixed slurry. The mass of the mixed slurry is 10% of the mass of the macroporous silica gel, yielding a Y / silica gel solid mixture A.

[0032] (3) 28.7 g of phosphoric acid was added to 51 g of deionized water, and then 16.8 g of aluminum sol (65% Al2O3) was added, and the mixture was stirred thoroughly for 7.5 hours to form solution B. 6.5 g of Y / silica gel solid mixture A was mixed with 17 g of tetraethylammonium hydroxide and 55 g of water to obtain a solid-liquid mixture C. The solid-liquid mixture C was added to solution B, and the pH was adjusted to 7.5 to obtain a solid-liquid mixture D, which was crystallized at 200°C for 18 hours to obtain a Y / SAPO-34 molecular sieve composite material slurry.

[0033] (4) 10 g of silica sol (SiO2 content 30 wt%) and 5 g of PEG1000 were added to the above Y / SAPO-34 molecular sieve composite material slurry, the pH value of the system was adjusted to 8, and the mixture was stirred and crystallized at 90 ° C for 16 hours. The product was filtered, washed, and ammonium ion exchanged, and calcined at 550 ° C for 3 hours to obtain a mesoporous Y / SAPO-34 / ASP composite material with a crystalline pore wall structure and a specific surface area of ​​590 m 2 / g, pore volume 0.80mL / g, pore size distribution 4~14nm.

[0034] (5) 32.5 g of the prepared Y / SAPO-34 / ASP composite material containing a crystalline pore wall structure and 32.5 g of macroporous alumina (specific surface area 350 m 2 / g, pore volume 1.2mL / g, pore size distribution 6-10nm) were mixed evenly and placed in a container, and then 43g of 15wt% aluminum sol was placed in a high-pressure container and pressurized to 2MPa and then sprayed out, and then the flow rate was 10m 3 / min high-speed airflow is carried out to form a moist atmosphere of aluminum sol in the container, so that the composite material and alumina are fully and evenly adsorbed. After molding, a hydrogenation catalyst carrier with a specific surface area of ​​520m 2 / g, pore volume 0.65mL / g, pore size distribution 4~13nm.

[0035] Example 3

[0036] (1) Using a unit cell of 24.42 and a specific surface area of ​​580m 2 / g, pore volume 0.42mL / g, average pore diameter 3.0nm Y molecular sieve, according to the mass ratio of Y molecular sieve: PEG1000: potassium hydroxide: water is 1:0.1:0.2:10, the Y molecular sieve is dispersed in the aqueous solution of PEG1000 and potassium hydroxide, and stirred at a constant temperature of 90 ° C for 4h to obtain a mixed slurry containing 0.1-5nm Y molecular sieve microcrystals;

[0037] (2) Add the mixed slurry containing 0.1-5 nm microcrystals of Y molecular sieve into the container, pressurize it to 6 MPa, spray the high-pressure solution out, and directly collide with the smooth metal wall, and then be sprayed at a flow rate of 20 m / s perpendicular to the spray direction of the mixed slurry. 3 / min high-speed airflow is then carried out to form a humid atmosphere in the container. Macroporous silica gel with a pore volume of 3.5 ml / g is placed in the humid atmosphere to fully contact and adsorb the mixed slurry. The mass of the mixed slurry is 30% of the mass of the macroporous silica gel, thereby obtaining a Y / silica gel solid mixture A.

[0038] (3) 34.5 g of phosphoric acid was added to 61.5 g of deionized water, and then 20.2 g of aluminum sol (65% Al2O3) was added, and the mixture was stirred thoroughly for 10 hours to form solution B. 9 g of Y / silica gel solid mixture A was mixed with 26 g of morpholine and 75 g of water to obtain solid-liquid mixture C. Solid-liquid mixture C was added to solution B, and the pH was adjusted to 7 to obtain solid-liquid mixture D, which was crystallized at 200°C for 24 hours to obtain a Y / SAPO-34 molecular sieve composite slurry.

[0039] (4) 15 g of water glass (SiO2 content 35 wt%) and 8 g of cetyltrimethylammonium bromide were added to the above Y / SAPO-34 molecular sieve composite material slurry, the pH value of the system was adjusted to 9, and crystallization was carried out at 100 ° C for 10 hours. The product was filtered, washed, and ammonium ion exchanged, and calcined at 600 ° C for 2 hours to obtain a mesoporous Y / SAPO-34 / ASP composite material with a crystalline pore wall structure and a specific surface area of ​​500 m 2 / g, pore volume 1.0mL / g, pore size distribution 4~15nm.

[0040] (5) 40 g of the prepared Y / SAPO-34 / ASP composite material containing a crystalline pore wall structure and 40 g of macroporous alumina (specific surface area 300 m 2 / g, pore volume 1.4mL / g, pore size distribution 8-12nm) were mixed evenly and placed in a container, 40g of 20wt% aluminum sol was placed in a high-pressure container and pressurized to 2MPa and then sprayed out, and then the flow rate was 10m 3 / min high-speed airflow is carried out to form a moist atmosphere of aluminum sol in the container, so that the composite material and alumina are fully and evenly adsorbed. After molding, a hydrogenation catalyst carrier with a specific surface area of ​​450m2 / g, pore volume 0.80mL / g, pore size distribution 4~15nm.

[0041] Comparative Example 1

[0042] (1) Using a unit cell of 24.32 and a specific surface area of ​​550m 2 / g, a pore volume of 0.40 mL / g, and an average pore diameter of 2.6 nm, Y molecular sieve, according to the mass ratio of Y molecular sieve: hexadecyltrimethylammonium bromide: potassium hydroxide: water of 1:0.03:0.03:15, the Y molecular sieve is dispersed in an aqueous solution of hexadecyltrimethylammonium bromide and potassium hydroxide, and stirred at a constant temperature of 70 ° C for 10 h to obtain a mixed slurry containing Y molecular sieve microcrystals;

[0043] (2) Add the mixed slurry containing Y molecular sieve microcrystals into the container, pressurize it to 2MPa, spray the solution, and then spray it at a flow rate of 10m / s perpendicular to the spray direction of the mixed slurry. 3 / min high-speed air flow is carried out after breaking it up to form a humid atmosphere in the container, so that the macroporous silica gel with a pore volume of 1.0ml / g is placed in the humid atmosphere, so that the macroporous silica gel can fully absorb the above-mentioned mixed slurry. The mass of the mixed slurry is 1% of the mass of the macroporous silica gel, and a Y / silica gel solid mixture A is obtained.

[0044] (3) 11 g of phosphoric acid was added to 20 g of deionized water, followed by 7 g of aluminum sol (65% Al2O3), and the mixture was stirred thoroughly for 3 hours to form solution B. 3 g of Y / silica gel solid mixture A was mixed with 7 g of triethylamine and 25 g of water to obtain a solid-liquid mixture C. The solid-liquid mixture C was added to solution B, and the pH was adjusted to 6.5 to obtain a solid-liquid mixture D, which was crystallized at 200°C for 12 hours to obtain a Y / SAPO-34 molecular sieve composite slurry.

[0045] (4) 5 g of 30 wt% silica sol and 2 g of PEG2000 were added to the above Y / SAPO-34 molecular sieve composite material slurry, the pH value of the system was adjusted to 10, and the mixture was stirred and crystallized at 80 ° C for 24 hours. The product was filtered, washed, and ammonium ion exchanged, and calcined at 500 ° C for 4 hours to obtain a mesoporous Y / SAPO-34 / ASP composite material with a crystalline pore wall structure and a specific surface area of ​​640 m 2 / g, pore volume 0.50mL / g, pore size distribution 4~8nm.

[0046] (5) 27 g of the prepared Y / SAPO-34 / ASP composite material containing a crystalline pore wall structure and 27 g of macroporous alumina (specific surface area 300 m 2 / g, pore volume 0.8mL / g, pore size distribution 4-8nm) were mixed evenly and placed in a container, 50g of 10wt% aluminum sol was placed in a high-pressure container and pressurized to 2MPa and then sprayed out, and then the flow rate was 10m 3 / min high-speed airflow is carried out to form a wet atmosphere of aluminum sol in the container, so that the composite material and alumina are fully and evenly adsorbed. After molding, a hydrogenation catalyst carrier with a specific surface area of ​​410m 2 / g, pore volume 0.45mL / g, pore size distribution 4~8nm.

[0047] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims of the present invention.

Claims

1. A hydrogenation catalyst carrier, characterized in that The Y / SAPO-34 / ASP composite material containing a crystalline pore wall structure and aluminum sol are prepared, wherein the ASP is a mesoporous amorphous silicon-phosphorus-aluminum oxide. The preparation method of the Y / SAPO-34 / ASP composite material containing a crystalline pore wall structure includes the following steps: (1) The slurry after the Y molecular sieve, long-chain surfactant, and alkaline aqueous solution are uniformly adsorbed on the macroporous silica gel to prepare a Y / silica gel solid mixture; (2) The Y / silica gel solid mixture obtained in step (1) is used as a silicon-aluminum source, mixed with a template, phosphoric acid, an aluminum source, and water, wherein the silicon-aluminum source is calculated as SiO2, the phosphoric acid is calculated as P2O5, and the aluminum source is calculated as Al2O3, and the molar ratio of the feed materials is controlled to be (1-1.5) Al2O3: (1-1.5) P2O5: (1-1.5) SiO2: (1-2) template: (40-80) H2O, and the pH is adjusted. After crystallization, a Y / SAPO-34 composite material slurry is obtained; (3) The Y / SAPO-34 composite material slurry obtained in step (2) is mixed with a silicon source and a long-chain surfactant in a mass ratio of 1:(0.01-0.1):(0.01-0.1), the pH is adjusted, and after crystallization, a Y / SAPO-34 / ASP composite material containing a crystalline pore wall structure is obtained.

2. The hydrogenation catalyst carrier according to claim 1, characterized in that Step (1) preparing materials according to a mass ratio of Y molecular sieve: long-chain surfactant: alkali: water of 1: (0.05-0.1): (0.05-0.2): (5-10), mixing the above materials, stirring at 70-90° C. for 4-10 hours to obtain a mixed slurry containing Y molecular sieve microcrystals, dispersing the mixed slurry in a container through a high-pressure, airflow crushing method to form a humid atmosphere, and then adsorbing the mixed slurry on macroporous silica gel to obtain a Y / silica gel solid mixture.

3. The hydrogenation catalyst carrier according to claim 1, characterized in that In step (2), phosphoric acid is added to water, and then an aluminum source is added and stirred to form a solution B; a Y / silica gel solid mixture, a template and water are mixed to obtain a solid-liquid mixture C, and the solid-liquid mixture C is added to the solution B, the pH is adjusted, and crystallization is carried out.

4. The hydrogenation catalyst support according to claim 1 or 3, characterized in that Step (2) adjusting the pH value to 6.5-7.5, crystallizing at 150-200° C. for 12-24 hours to obtain a Y / SAPO-34 composite material slurry.

5. The hydrogenation catalyst carrier according to claim 1, characterized in that Step (3) adjusting the pH to 8-10, stirring and crystallizing at 80-100° C. for 10-24 hours to obtain a Y / SAPO-34 / ASP composite material containing a crystal pore wall structure, wherein ASP is a mesoporous amorphous silicon-phosphorus-aluminum oxide.

6. The hydrogenation catalyst carrier according to claim 1, characterized in that After crystallization in step (3), the steps of filtration, washing, ammonium ion exchange and calcination are also included.

7. The hydrogenation catalyst carrier according to claim 6, characterized in that The calcination conditions are 500-550°C for 3-5 hours.

8. The hydrogenation catalyst carrier according to claim 1, characterized in that The preparation method of the carrier is to put 10-20 wt% aluminum sol into a high pressure container, pressurize it to 2-6 MPa, and then spray it. 3 / min high-speed airflow is broken and carried out to form a wet atmosphere of aluminum sol in the container. The Y / SAPO-34 / ASP composite material containing a crystal pore wall structure and macroporous alumina powder are evenly mixed and placed in the container for full and uniform adsorption to obtain a hydrogenation catalyst carrier after molding.

9. The hydrogenation catalyst carrier according to claim 1, characterized in that The specific surface area of ​​the catalyst carrier is 450-610m 2 / g, pore volume 0.50~0.80 mL / g, pore size distribution 4~15nm.

10. The hydrogenation catalyst carrier according to claim 1, characterized in that The long-chain surfactant includes one or more of cetyltrimethylammonium bromide, PEG1000 and PEG2000; the aluminum source includes pseudo-boehmite; the silicon source includes silica sol and / or water glass; and the template includes one or more of triethylamine, morpholine and tetraethylammonium hydroxide.

11. The hydrogenation catalyst carrier according to claim 1, characterized in that The unit cell of Y molecular sieve is 24.32~24.42.