CN1211465C - Hydrocracking catalyst containing compound molecular sieve and preparing method thereof - Google Patents

Hydrocracking catalyst containing compound molecular sieve and preparing method thereof Download PDF

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CN1211465C
CN1211465C CN 02133131 CN02133131A CN1211465C CN 1211465 C CN1211465 C CN 1211465C CN 02133131 CN02133131 CN 02133131 CN 02133131 A CN02133131 A CN 02133131A CN 1211465 C CN1211465 C CN 1211465C
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catalyst
molecular sieve
sapo
hydrocracking catalyst
catalyzer
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CN1488726A (en
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徐学军
周长兴
赵崇庆
刘东香
冯小萍
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China Petroleum and Chemical Corp
Sinopec Fushun Research Institute of Petroleum and Petrochemicals
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China Petroleum and Chemical Corp
Sinopec Fushun Research Institute of Petroleum and Petrochemicals
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Abstract

The present invention relates to a hydrocracking catalyst comprising a compound molecular sieve, and a preparation method thereof. The catalyst is composed of amorphous silicon aluminium a kind of compound molecular sieves, 10 TO 40% of metal oxides in group VIB, 1 to 20% of metal oxides in group VIII and 1 to 10% of metal oxides in group IVB, wherein the amorphous silicon aluminium and the compound molecular sieves are used as carriers; the amorphous silicon aluminium takes 30 to 60% of the total weight of the catalyst; the compound molecular sieves are mixtures of modified Y molecular sieves and SAPO molecular sieves, and takes 1 to 20% of the total weight of the catalyst. The catalyst of the present invention is prepared with a codeposition method, and adopts the mode in which the catalyst is firstly shaped and then is washed under an alkalescent condition. Accordingly, the present invention decreases material loss, enhances the intensity of catalysts and improves the performance of catalysts. Compared with the prior art, when used for treating reduced pressure distillate oil with high sulfur and nitrogen impurities, the catalyst of the present invention has high capability of resisting nitride poisoning, high medium oil selectivity and high hydrocracking activity.

Description

Contain hydrocracking catalyst of composite molecular screen and preparation method thereof
1, technical field
The present invention relates to a kind of hydrocracking catalyst and preparation method thereof, particularly contain hydrocracking catalyst of composite molecular screen and preparation method thereof.
2, background technology
At present, worldwide petroleum resources deficiency, crude oil becomes and heavily becomes bad, the intermediate oil demand increases, petroleum chemicals upgrading and environmental regulation are more and more strict, all promoted the heavy oil lighting greatly, and the very strong driving force of formation accelerated development hydrogen addition technology, hydrocracking is the effective means of volume increase intermediate oil, with normal vacuum distillate, vacuum distillate, secondary processing light oil is raw material, after hydrocracking, can produce fine-quality diesel oil and rocket engine fuel, and product flexibility is big, good product quality.
Hydrocracking is carried out under elevated pressures, and hydrocarbon molecules and hydrogen carry out the conversion process that cracking and hydrogenation reaction generate light molecule at catalyst surface, and hydrogenating desulfurization, the hydrogenation reaction of denitrogenation and unsaturated hydrocarbons also take place simultaneously.The scission reaction of hydro carbons in hydrocracking process is to carry out on the acid sites of catalyzer, follows carbonyl ionic reaction mechanism, the generation of reacting with hydrocarbon isomerization in the time of hydrogenation, scission reaction.Can think that the hydrocarbon hydrocracking reaction is the result for the catalytic cracking reaction superposition hydrogenation reaction of class.Therefore the suitable catalyzer of distillate hydrocracking process should be a kind of dual-function catalyst that stronger hydrogenation sites has moderate acid sites again that both possessed.Promptly require catalyzer to have suitable hydrogenation activity and tart coupling, to satisfy the requirement of different technological processs.
In the hydrocracking catalyst that generally contains molecular sieve, often the organonitrogen content in the raw material there is strict requirement, general requirement＜50ppm, best＜10ppm, the heavy VGO of high nitrogen must be reduced to nitrogen content in the scope of permission through refining before agent is urged in the hydrocracking that contact contains molecular sieve for this reason.The two-stage method technical process investment of initial exploitation is very high, so full scale plant is less, and the major cause that adopts two-stage method is because the anti-sulphur of the hydrocracking catalyst beginning of this century, and the nitrogen impurity poisoning capability is low to be caused.The original adaptability of series process flow is strong, and flexibility of operation is big, is used widely.Because two sections flow process investments are high, just developed the single hop flow process of simplifying as far back as the beginning of the sixties, single hop technical process reduced investment, simple to operate, and also air speed is big, and unconverted oil can rationally be utilized.But to the anti-nitrogen performance of catalyzer, the hydrocracking performance all requires very high.
The hydrocracking catalyst that the single-stage hydrocracking technological process is used is to use under the situation of not giving refining protection.General directly the contact with hydrocracking catalyst under the situation of feed nitrogen content height to 1000～2000ppm reacted.This just requires hydrocracking catalyst to have the ability that anti-preferably nitride is poisoned, and promptly has good hydrocracking activity under reactant nitrogen content conditions of higher, also will have simultaneously to delay the performance that carbon deposit generates preferably.
Hydrocracking catalyst is made up of hydrogenation component and acidic components, the acidic components of typical hydrocracking catalyst comprise amorphous aluminum silicide, aluminum oxide and molecular sieve series etc., typical hydrogenation component has precious metal, base metals etc., normally main metal of the latter and promoter metal collocation are also made sulfide type.Use amorphous aluminum silicide merely, though the middle distillates oil selectivity height, activity is lower, and flexibility of operation is restricted.In order to guarantee required purpose product, the balance that will regulate hydrogenating function and acid function is adjusted operational condition on the other hand on the one hand.In general hydrogenating function is strong, the catalyzer that acid function is weak, and liquid product is more.Appearance along with novel molecular sieve and solid support material, comprehensive these two kinds of materials that use, the coupling of adjustment of acidity component and hydrogenating function is to obtain high middle distillates oil selectivity, highly active high-level hydrocracking catalyst, further outstanding single hop be the superiority by flow process once.
" Chinese oil Refining Technologies " (Sinopec press, the Hou Xianglin chief editor, the 509th page) delivered a kind of unformed hydrocracking catalyst that adopts the multiple step coprecipitation flow preparation, this catalyzer does not contain molecular sieve, need repeatedly making beating washing in the preparation process, long flow path, cost height, yield is low, energy consumption is big.It consists of: WO 325～35%, Ni 2.2～4.0%, and specific surface is 100～160m 2/ g, pore volume are 0.3～0.6ml/g.Though this catalyzer middle distillates oil selectivity is good, activity is lower, and flexibility of operation is poor, and when the distillate of handling 323～532 ℃, temperature of reaction reaches 420 ℃.
US 4,313, and the used molecular sieve of hydrocarbon conversion catalyst of the 817 common glue method preparations that provide is a ZSM series, and it is represented as ZSM-5, and complicated need of this molecular sieve preparation used template, and crystallization time is long.All contain titanium in this catalyzer, disperse, improve hydrogenation activity to help metal.This titanium component is with TiCl 4Mode adds, because TiCl 4Volatility, its amount is difficult to precise control, and operational condition is abominable.This catalyzer consists of: WO 321.0%, NiO 8.5%, TiO 26.7%, SiO 222%, Al 2O 325%, H-ZSM-516.8%, specific surface are 360m 2/ g, pore volume are 0.36ml/g, and temperature of reaction is at 410 ℃ when handling heavy distillate.
3, summary of the invention
The object of the present invention is to provide a kind of middle oil type hydrocracking catalyst and preparation method thereof, this catalyzer has high anti-nitrogen performance, high hydrogenation cracking activity, middle distillates oil selectivity and stable preferably.The present invention also provides the application of a kind of catalyzer that the present invention relates in the heavy hydrocarbons hydrocraking process, and the heavy hydrocarbons hydrocraking that this kind technological process is specially adapted to high nitrogen-containing is converted into petroleum naphtha, light hydrocarbons such as rocket engine fuel and diesel oil.
Catalyzer of the present invention is carrier with the amorphous aluminum silicide, with the composite molecular screen is acidic components, with group vib metal and VIII family metal is the hydrogenation activity component, with IVB family metal is promotor, and wherein the vib metal oxide content is 10～40w%, is preferably 20～25w%, VIII family metal oxide content is 1～20W%, be preferably 7～12W%, account for 1～10w% of catalyzer, be preferably 6～10W% with IVB family metal oxide content.Amorphous aluminum silicide content accounts for 30～60W% of catalyst weight, and 40～50W% is better, and composite molecular screen content accounts for 1～20w%, preferably 3～18w% in catalyzer.
Wherein composite molecular screen is Y molecular sieve and SAPO molecular sieve, and Y molecular sieve and SAPO molecular sieve mix by 1: 1～10 weight ratios, preferably 1: 1～5.The SiO of employed Y molecular sieve 2/ Al 2O 3Mol ratio 11～15, unit cell parameters are 24.23～24.45 * 10 -10M, degree of crystallinity 90～100%, specific surface area 750～950m 2/ g, aperture＞1.7 * 10 -10The hole of m accounts for 40～70% of total hole.The SiO of employed SAPO molecular sieve 2/ Al 2O 3/ P 2O 5Mol ratio 1: 1～10: 1～10, specific surface area 150～350m 2/ g, pore volume 0.15～0.35ml/g, infrared acidity 0.2～0.5mmol/g, 150～250 ℃ of weak acid centers account for about 35%, and 250～450 ℃ of medium tenacity acid sites account for about 60%,＞450 ℃ of strong acid center＜5%, NH 3The TPD analytical results shows that the SAPO molecular sieve has intermediate acid intensity.The SAPO molecular sieve can be selected SAPO-11, SAPO-31, SAPO-41, preferred SAPO-11.
Catalyzer of the present invention adopts the coprecipitation method preparation, concrete preparation process is: with amorphous aluminum silicide involved in the present invention, the salts solution of auxiliary agent and reactive metal joins in the glue jar in the desired ratio of catalyzer, add precipitation agent and make gelatinous mixture, precipitation agent can be inorganic or organic weakly alkaline ammoniac compounds, the suspension liquid that adds Y and SAPO composite molecular screen then on demand mixes, after filtering, the mixture of gained obtains containing the filter cake of certain moisture, this filter cake dewaters at a certain temperature, the temperature range of cake dewatering is 40～110 ℃, the first extruded moulding after scouring in dehydration back is removed impurity, wash temperature is 20～60 ℃, the pH value is 7～12, and is dry then, activation makes finished catalyst.Drying temperature is 50～120 ℃, and the time is 6～12 hours, and activation temperature is 450～550 ℃, and the time is 8～12 hours.In order to reduce the metal loss of washing process, catalyzer of the present invention adopts first moulding after scouring mode, washs simultaneously under normal temperature and weak basic condition and carries out, and can adopt steam treatment process to adjust the pore structure of catalyzer.
Catalyzer of the present invention adopts two kinds of molecular sieves as acidic components, has improved the anti-nitrogen performance of catalyzer, has improved hydrogenation cracking activity, middle distillates oil selectivity and the stability of catalyzer simultaneously.Catalyzer of the present invention is used for the single-stage hydrocracking technological process, has the liquid yield height, advantages such as good product quality.Method for preparing catalyst metal dispersity height of the present invention, loss of material is few, and the catalyzer use properties is good.
4, embodiment
Catalyzer of the present invention is a carrier with the amorphous aluminum silicide, and part acidity is provided, and adds the composite molecular screen adjustment of acidity of an amount of special modification, with group vib metal W and/or Mo and metal Ni of VIII family and/or Co, or its mixture is the hydrogenation activity component, and with IVB family metal Ti, Zr is a promotor.The sial weight ratio of amorphous aluminum silicide is 0.1～10: 1, and preferred about 1: 1.
The Y molecular sieve that the present invention uses, existing high degree of crystallinity has low unit cell parameters again; Existing abundant secondary pore has high surface area again.Because the dealuminzation degree is darker, the acid site number of molecular sieve is less, is more suitable for middle oil type hydrocracking catalyst.Another kind of component is the SAPO-11 molecular sieve, and it is a kind ofly to have intermediate acid intensity, and contains oval ten-ring one-dimensional channels.Help the normal paraffin hygrogenating isomerization reaction like this, can improve intermediate oil yield and quality product.
In general, hydrocracking catalyst can use following any method preparation, as: pickling process, kneading method, beating method, coprecipitation method may use ion exchange method for precious metal.Pickling process and kneading method all are to add metal again after earlier carrier and acidic components being made, and coprecipitated rule to be acidic components and one on metal precipitate, and the metal loading is unrestricted, metal dispersion is good.The preparation method that catalyzer of the present invention relates to is a coprecipitation method, in the hope of obtaining the more uniform dispersion of metal component.
Catalyzer of the present invention can be used for producing the hydrocracking process of intermediate oil, is specially adapted to produce the single-stage hydrocracking flow process of intermediate oil, and heavier hydrocarbon feeds is changed into than low-boiling point material.
The heavy feed stock scope that is applicable to this law is very wide, they comprise that vacuum gas oil, coker gas oil, deasphalted oil, thermally splitting gas oil, catalytic gas oil, the various hydrocarbon ils of catalytic cracking circulation wet goods also can be used in combination, it is 250～550 ℃ hydro carbons that raw material contains boiling point usually, and nitrogen content can be at 50～2500PPm.
Method of the present invention preferably at single hop once by carrying out under the hydrocracking condition.Temperature of reaction is 300～500 ℃, is more preferably 350～450 ℃; Pressure is 6～20MPa, is more preferably 13～17MPa; Liquid hourly space velocity is 0.5～3hr -1, 0.8～1.5hr preferably -1Hydrogen to oil volume ratio is 400～2000: 1, preferably 800～1500: 1.
The hydrocracking catalyst that uses in the single-stage hydrocracking technology requires higher middle distillates oil selectivity, the employing amorphous aluminum silicide is acidic components, middle distillates oil selectivity to the raising catalyzer is favourable, but use lytic activity to show too low again separately, if adding the composite molecular screen of forming through the acid moderate Y molecular sieve and the SAPO molecular sieve of special modification in right amount is acidic components, then can obtain greater activity and have high middle distillates oil selectivity, take into account petroleum naphtha simultaneously, all comparatively ideal catalyzer of rocket engine fuel and diesel quality.
Following example can further be understood the present invention.
Example 1
Catalyst A is the catalyzer of the inventive method preparation
Catalyzer consists of: WO 322.0%, NiO 9.0%, ZrO 27%, SiO 229%, Al 2O 329%, P 2O 54%, specific surface is 270m 2/ g, pore volume are 0.30ml/g.
Concrete preparation process is as follows:
(1) preparation contains Al 2O 3Concentration is 900 milliliters of the liquor alumini chloridis of 90g/l, contains NiO and be 200 milliliters of the nickel chloride solutions of 140g/l, contains ZrO 2150 milliliters of 140g/l zirconyl chloride solutions, and be mixed in one 5 liters the container, add 2000 milliliters of water purification dilutions.
(2) prepare rare water glass solution, contain SiO 2750 milliliters of the water glass solutions of 75g/l add (2) in (1) under stirring state;
(3) ammoniacal liquor is added the mixture of (1) and (2) until pH value 5.2 under stirring state;
(4) the preparation sodium tungstate solution is 1000 milliliters, contains WO 3Be 85g/l, and under stirring state, join (1)+mixture of (2)+(3) in;
(5) continuing to add ammoniacal liquor is 7.8 until pH value;
(6) whole one-tenth glue process should be carried out at 60 ℃;
(7) mixture left standstill in 70 ℃ of scopes aging 4 hours; Add the composite molecular screen of the present invention's preparation before aging, its add-on is 15% of a catalyst weight.Y and SAPO-11 weight ratio are 1: 2 in the composite molecular screen, and wherein the main character of Y molecular sieve is SiO 2/ Al 2O 3Mol ratio 12, unit cell parameters are 24.29 * 10 -10M, degree of crystallinity 95%, specific surface area 750m 2/ g; The main character of SAPO molecular sieve is SiO 2/ Al 2O 3/ P 2O 5Mol ratio 1: 1.5: 1.2, specific surface area 190m 2/ g, pore volume 0.25ml/g, infrared acidity 0.32mmol/g.
(8) filter,, roll, with the orifice plate extruded moulding of 3 millimeters of diameters 60 ℃ of oven dryings 6 hours;
(9) 25 ℃ of Spirit of Mindererus washings of using pH=8.8 down of room temperature;
(10) 110 ℃ of oven dryings 8 hours, 500 ℃ of roastings got final product in 4 hours.
Example 2
Be hydrocracking catalyst B of the present invention, the preparation method is identical with example 1, except the composite molecular screen amount that adds the present invention's preparation before aging is 8%.Y and SAPO-11 weight ratio are 1: 4 in the composite molecular screen, and wherein the main character of Y molecular sieve is SiO 2/ Al 2O 3Mol ratio 14, unit cell parameters are 24.40 * 10 -10M, degree of crystallinity 100%, specific surface area 860m 2/ g; The main character of SAPO molecular sieve is SiO 2/ Al 2O 3/ P 2O 5Mol ratio 1: 1.2: 1.1, specific surface area 250m 2/ g, pore volume 0.40ml/g, infrared acidity 0.39mmol/g.Catalyzer consists of: WO 321.0%, NiO 7.5%, ZrO 26.5%SiO 228%, Al 2O 333%, P 2O 54%, specific surface is 250m 2/ g, pore volume are 0.29ml/g.
Example 3
Be hydrocracking catalyst C of the present invention, the preparation method is identical with example 1.The composite molecular screen amount for preparing except adding the present invention before aging is 12%.Y and SAPO-31 weight ratio are 1: 3 in the composite molecular screen, and wherein the main character of Y molecular sieve is SiO 2/ Al 2O 3Mol ratio 15, unit cell parameters are 24.35 * 10 -10M, degree of crystallinity 98%, specific surface area 950m 2/ g; The main character of SAPO molecular sieve is SiO 2/ Al 2O 3/ P 2O 5Mol ratio 1: 1.1: 1, specific surface area 300m 2/ g, pore volume 0.34ml/g, infrared acidity 0.30mmol/g.Catalyzer consists of: WO 323.6%, NiO 7.4%, ZrO 27%SiO 229.5%, Al 2O 329.5%, P 2O 53%, specific surface is 270m 2/ g, pore volume are 0.31ml/g.
Example 4
Be hydrocracking catalyst D of the present invention, the preparation method is identical with example 1.The composite molecular screen amount for preparing except adding the present invention before aging is 10%.Y and SAPO-11 weight ratio are 1: 1 in the composite molecular screen, and wherein the main character of Y molecular sieve is SiO 2/ Al 2O 3Mol ratio 14, unit cell parameters are 24.40 * 10 -10M, degree of crystallinity 100%, specific surface area 860m 2/ g; The main character of SAPO molecular sieve is SiO 2/ Al 2O 3/ P 2O 5Mol ratio 1: 1.2: 1.1, specific surface area 250m 2/ g, pore volume 0.40ml/g, infrared acidity 0.39mmol/g.Catalyzer consists of: WO 320.3%, NiO 10.4%, ZrO 29.3%SiO 233.5%, Al 2O 323.5%, P 2O 53%, specific surface is 250m 2/ g, pore volume are 0.38ml/g.
Comparative example 1
Be reference catalyst E.
Catalyzer consists of: WO 324.0%, NiO 4.0%, SiO 235%, Al 2O 337%, specific surface is 160m 2/ g, pore volume are 0.40ml/g.
Preparation method's preparation by the disclosed a kind of unformed hydrocracking catalyst 3652 of " Chinese oil Refining Technologies " (Hou Xianglin chief editor, Sinopec press, the 509th page).Concrete preparation process is as follows:
(1) the raw water glass and the liquor alumini chloridi of preparation preparation amorphous silicon aluminium, preparation precipitation agent ammoniacal liquor;
(2) earlier ammoniacal liquor is slowly added in the part liquor alumini chloridi, stop when reaching at thick, add water glass and residue liquor alumini chloridi, and continue to adjust pH value to 7.8 with ammoniacal liquor, filter, obtain silica-alumina gel, five making beating washings, drying, moulding, roasting obtains silica-alumina supports;
(3) with ammonium metawolframate and the nickelous nitrate mixing solutions dipping of silica-alumina supports with preparation, drying, roasting.
Comparative example 2
Press United States Patent (USP) 4,313, the reference catalyst F of the 817 common glue method preparations that provide.This catalyzer consists of: WO 321.0%, NiO 8.5%, TiO 26.7%, SiO 222%, Al 2O 325%, H-ZSM-516.8%, specific surface are 360m 2/ g, pore volume are 0.36ml/g.
Example 5
Oil type hydrocracking catalyst A in of the present invention and reference catalyst E evaluation result on packaged unit are compared.Estimating with Iranian VGO is high-sulfur, nitrogen heavy distillate, and its main character is as follows: density 0.9010g/cm3,323～532 ℃ of boiling ranges, sulphur 1.50m%, nitrogen 0.132m%, carbon residue 0.10m%, 35 ℃ of condensation points, BMCI value 39.7.
Table 1 has been listed comparing result.
Table 1 catalyst A, E, F comparing result
Catalyzer numbering A E F
Reaction pressure, MPa 15.7 15.7 15.7
Air speed, h -10.92 0.92 0.92
Hydrogen-oil ratio, V/V 1,240 1,240 1240
Temperature of reaction, ℃ 405 420 410
Product distributes, (to raw material) m%
Light naphthar 5.06 5.22 5.17
Heavy naphtha 9.73 9.70 9.82
Rocket engine fuel 25.62 24.69 24.76
Diesel oil 30.61 28.66 28.54
Hydrogenation tail oil 27.34 28.23 30.21
Middle distillates oil selectivity, % 79.17 78.15 78.02
As can be seen from Table 1, the senior middle school of the present invention oil type hydrogenation hydrogenation cracking activity and the middle distillates oil selectivity that split catalyzer is better than reference catalyst E and F.
Example 6
With hydrocracking catalyst B of the present invention, C, D estimate with processing condition of the present invention on packaged unit, and table 2 has been listed evaluation result.
Table 2 catalyst B, C, D evaluation result
Catalyzer numbering B C D
Reaction pressure, MPa 15.7 15.7 15.7
Air speed, h -10.92 0.92 1.11
Hydrogen-oil ratio, V/V 1,240 1,240 1240
Temperature of reaction, ℃ 406 404 405
Product distributes, m%
Light naphthar 5.10 5.04 5.08
Heavy naphtha 9.70 9.75 9.73
Rocket engine fuel 25.02 25.54 25.69
Diesel oil 30.21 30.53 30.68
Hydrogenation tail oil 28.37 27.64 27.42
Middle distillates oil selectivity, % 79.12 79.13 79.19
As can be seen from Table 2, catalyzer of the present invention all can reach effect of the present invention under hydrocracking process condition of the present invention.

Claims (9)

1, a kind of hydrocracking catalyst that contains composite molecular screen, with the amorphous aluminum silicide is carrier, with the composite molecular screen is acidic components, with group vib metal and VIII family metal is the hydrogenation activity component, with IVB family metal is promotor, the Y molecular sieve and the SAPO molecular sieve that it is characterized in that described composite molecular screen are compound, and the weight ratio of Y molecular sieve and SAPO molecular sieve is 1: 1～10, and composite molecular screen accounts for 1～20% of total catalyst weight.
2,, it is characterized in that described Y molecular sieve has following character: SiO according to the described hydrocracking catalyst of claim 1 2/ Al 2O 3Mol ratio 11～15, unit cell parameters are 24.23～24.45 * 10 -10M, degree of crystallinity 90～100%, specific surface area 750～950m 2/ g, aperture＞1.7 * 10 -10The hole of m accounts for 40～70% of total hole.
3,, it is characterized in that described SAPO molecular sieve is SAPO-11, SAPO-31 or SAPO-41 according to the described hydrocracking catalyst of claim 1.
4,, it is characterized in that described composite molecular screen accounts for 3～18% of total catalyst weight according to the described hydrocracking catalyst of claim 1.
5, according to the described hydrocracking catalyst of claim 1, the weight ratio that it is characterized in that described Y molecular sieve and SAPO molecular sieve is 1: 1～5.
6,, it is characterized in that the SiO of described SAPO molecular sieve according to the described hydrocracking catalyst of claim 1 2/ Al 2O 3/ P 2O 5Mol ratio 1: 1～10: 1～10, specific surface area 150～350m 2/ g, pore volume 0.15～0.35ml/g, infrared acidity 0.2～0.5mmol/g.
7, according to the described hydrocracking catalyst of claim 1, it is characterized in that described vib metal oxide content is 10～40w%, VIII family metal oxide content is 1～20W%, IVB family metal oxide content accounts for 1～10w% of catalyzer, and amorphous aluminum silicide content accounts for 30～60W% of catalyst weight.
8, the preparation method of the described hydrocracking catalyst of a kind of claim 1, it is characterized in that adopting the coprecipitation method preparation: the salts solution of amorphous aluminum silicide, auxiliary agent and reactive metal is joined in the glue jar in the desired ratio of catalyzer, add precipitation agent and make gelatinous mixture, add Y and SAPO composite molecular screen suspension liquid then, mixing, filtration, cake dewatering, moulding, washing, drying, activation obtain catalyst prod; Wherein said cake dewatering temperature is 40～110 ℃, and wash temperature is 20～60 ℃, and washing pH value is 7～12, and activation temperature is 450～550 ℃, and the time is 8～12 hours.
9, in accordance with the method for claim 8, it is characterized in that described drying temperature is 50～120 ℃, the time is 6～12 hours.
CN 02133131 2002-10-10 2002-10-10 Hydrocracking catalyst containing compound molecular sieve and preparing method thereof Expired - Lifetime CN1211465C (en)

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CN101618334B (en) * 2008-07-04 2013-08-28 中国石油化工股份有限公司 In situ type molecular sieve hydrogenation cracking catalyst and method for preparing same
CN102441427A (en) * 2010-10-13 2012-05-09 中国石油化工股份有限公司 Composite molecular sieve-containing hydrocracking catalyst and preparation method thereof
CN106179462B (en) * 2015-04-30 2018-10-12 中国石油化工股份有限公司 A kind of hydrocracking catalyst and preparation method thereof
WO2017144438A1 (en) * 2016-02-25 2017-08-31 Sabic Global Technologies B.V. Process for combined hydrodesulfurization and hydrocracking of heavy hydrocarbons
EP3423548B1 (en) 2016-03-01 2020-11-25 SABIC Global Technologies B.V. Process for producing monoaromatic hydrocarbons from a hydrocarbon feed comprising polyaromatics
CN111318313A (en) * 2018-12-13 2020-06-23 中国石油化工股份有限公司 Hydrocracking catalyst carrier, and preparation method and application thereof
CN111318302A (en) * 2018-12-13 2020-06-23 中国石油化工股份有限公司 Hydrocracking catalyst, and preparation method and application thereof
WO2020119754A1 (en) 2018-12-13 2020-06-18 中国石油化工股份有限公司 Hydrocracking catalyst, preparation method therefor and application thereof

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