CN108262067A - A kind of hydrogenation catalyst and preparation method thereof - Google Patents

A kind of hydrogenation catalyst and preparation method thereof Download PDF

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Publication number
CN108262067A
CN108262067A CN201611263043.4A CN201611263043A CN108262067A CN 108262067 A CN108262067 A CN 108262067A CN 201611263043 A CN201611263043 A CN 201611263043A CN 108262067 A CN108262067 A CN 108262067A
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acid
hydrogenation catalyst
mcm
catalyst
molecular sieve
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袁晓亮
王延飞
余颖龙
张志华
张雅琳
翟绪丽
付凯妹
谢斌
张占全
王燕
庄梦琪
王嘉祎
王晶晶
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China Petroleum and Natural Gas Co Ltd
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China Petroleum and Natural Gas Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J29/00Catalysts comprising molecular sieves
    • B01J29/04Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/80Mixtures of different zeolites
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/60Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61Surface area
    • B01J35/615100-500 m2/g
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/60Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/63Pore volume
    • B01J35/633Pore volume less than 0.5 ml/g
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING 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
    • C10G47/00Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions
    • C10G47/02Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating compounds, to obtain lower boiling fractions characterised by the catalyst used
    • C10G47/10Cracking 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
    • C10G47/12Inorganic carriers
    • C10G47/16Crystalline alumino-silicate carriers
    • C10G47/20Crystalline alumino-silicate carriers the catalyst containing other metals or compounds thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2229/00Aspects of molecular sieve catalysts not covered by B01J29/00
    • B01J2229/10After treatment, characterised by the effect to be obtained
    • B01J2229/20After 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J29/00Catalysts comprising molecular sieves
    • B01J29/04Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/08Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J29/00Catalysts comprising molecular sieves
    • B01J29/04Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/70Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • B01J29/7038MWW-type, e.g. MCM-22, ERB-1, ITQ-1, PSH-3 or SSZ-25

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Inorganic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Catalysts (AREA)

Abstract

The present invention relates to a kind of hydrogenation catalysts and preparation method thereof.The hydrogenation catalyst includes active metal and carrier;The active metal is group VIB and the metal of group VIII, and wherein vib metals are molybdenum and/or tungsten, and group VIII metal is cobalt and/or nickel;The carrier is made of solid acid component and unformed refractory oxides;The solid acid component is 22 molecular sieves of MCM and the mixture of Y molecular sieve;The specific surface of the hydrogenation catalyst is 200~320m2/ g, total pore volume are 0.30~0.50ml/g, and the ratio of meleic acid amount 0.50~1.0mmol/g, B acid and L acid is 0.2~1.0, and radial direction anti-crushing power is more than 150N/cm.The hydrogenation catalyst can be applied to be hydrocracked, hydro-upgrading, during hydroisomerizing etc..

Description

A kind of hydrogenation catalyst and preparation method thereof
Technical field
The present invention relates to a kind of hydrogenation catalysts and preparation method thereof, specifically a kind of to be applied to be hydrocracked, add Hydrogen modify and the processes such as hydroisomerizing by hydrogenation catalyst that MCM-22 molecular sieves and Y molecular sieve mixture are acid constituent element and Preparation method.
Background technology
Important manufacturing process of the hydrocracking technology as heavy oil lighting, low grade oils modification and Integrated Refinery And Petrochemical, tool Have the advantages that production decision is flexible, adaptability to raw material is strong, purpose product selectivity is high, high-quality and tail oil added value is high.Add hydrogen Cracking catalyst is the core of hydrocracking technology, therefore development, the development and application of hydrocracking catalyst are also that hydrogen is added to split Change the main contents of technological progress.Hydrocracking catalyst is typical bifunctional catalyst, and catalyst carrier material offer is split Change function, open loop is substantially carried out on acidic site, n-alkane is hydrocracked, the de- reactions such as alkyl, isomerization.At present, for The active metal component understanding of the mechanism of action and its load technology of preparing on a support material in hydrocracking catalyst show It has been mature on the whole with perfect, and the novel carriers material with more dominance energy also just becomes grinding for hydrocracking catalyst technology Heat generating spot.
VGO feedstock is mainly made of saturated hydrocarbons, aromatic hydrocarbons and colloid etc..The polycyclic cyclic hydrocarbon molecules for making diameter big are with urging Change activated centre contact, it is necessary that catalyst has good pore structure.Hydrocracking catalyst only have big aperture, Macropore holds, pore size distribution is uniform, pore system is open and the pore structures feature such as unimpeded, and the polycyclic hydrocarbon molecule that can just make diameter big compares Catalyst duct is easily accessible, increases the chance for contacting and reacting with activated centre, improves ring-opening reaction speed;Diameter is small Chain hydrocarbon can then be easier to be detached from from duct, diffuse out, and reduce chain-breaking reaction speed.The acidity and pore structure of catalysis material It is the principal element for determining hydrocracking catalyst.
Y types and Beta types molecular sieve are due to twelve-ring macroporous structure, being widely used in hydrocracking catalyst As acid centre.Y type molecular sieve has the characteristics that three-dimensional supercage, tetrahedron trend and twelve-ring macroporous structure, has higher Segmented ring performance, mostly suitable for light oil type hydrogen cracking catalyst.Beta type molecular sieves are twelve-ring macropore straight channels Structure, it is preferable for straight-chain hydrocarbons stereoselectivity, mostly suitable in middle oil type hydrocracking catalyst.In recent years, gasoline demand Steady-state growth is measured, the growth of diesel oil demand is slower, and the development of diesel oil substitute fuel technology, diesel and gasoline ratio persistently reduce in addition, it is contemplated that The year two thousand twenty is down to 1.0 or so.And aviation kerosine was increased speed very fast in recent years, annual growth 9.7%.In addition, ethylene and virtue Hydrocarbon demand sustainable growth, but the deficiency of the raw material degree of self-sufficiency limits its development.Changed according to diesel and gasoline ratio, mobile type, which is hydrocracked, urges The exploitation of agent has great importance.MCM-22 molecular sieves have MWW structures, there is unique 10 membered ring channel and 12 yuan of annular distances Cave structure shows good catalytic performance in the reactions such as alkylation, toluene disproportionation, xylene isomerization.
CN201511028094.4 discloses a kind of high-precision desulphurization and denitrification catalyst carrier, by MCM-22 molecular sieves and oxidation Magnesium, Si oxide and aluminum oxide are mixed with and obtain.Load C o, Mo, Ni, W metal, using naphtha as raw material, in 250-350 Prepared catalyst is evaluated under the conditions of DEG C, as a result shows prepared catalyst desulfurizing rate up to more than 92%, denitrogenation Rate is horizontal higher than the desulfurization removing nitric of contrast medium up to more than 35%.
CN200910012945.4 discloses a kind of metal supported MCM-22 molecular sieve hollow sphere bifunctional catalyst system Preparation Method using MCM-22 as the supported on carriers metal Mo of acid constituent element, for oxygen-free dehydrogenating aromatization of methane aromatic hydrocarbons, has Methane conversion is high, has strong anti-carbon capacity, the features such as service life is long.
CN201510830592.4 discloses a kind of catalyst using the MCM-22 that Zn is modified as main acid constituent element and carries The catalyst of phosphoric acid tungsten is loaded on body.Catalyst is applied in long chain alkylphenol catalysis reaction, has catalyst stabilization, service life Length obtains the features such as product acid value is low, dealkylation rate is low, solves industry at present using difficult existing for ion exchange resin Topic.
Due to the unique composite constructions of MCM-22, the distribution of special acid site and excellent hydrothermal stability, can be applied to In hydrocracking catalyst, have the characteristics that products scheme is flexible, process conditions are adjustable.But since heavy oil macromolecular enters MCM- 22 10 membered ring channels are restricted, if with Y molecular sieve act synergistically, step cracking can be carried out, have products scheme flexibly, work The features such as skill condition is adjustable.
Invention content
The object of the present invention is to provide a kind of hydrogenation catalyst, in being hydrocracked, can flexibly produce heavy naphtha, Aviation kerosine and diesel oil.
For this purpose, the present invention provides a kind of hydrogenation catalyst, including active metal and carrier;The active metal is Section VI B Race and the metal of group VIII, wherein vib metals are molybdenum and/or tungsten, and group VIII metal is cobalt and/or nickel;The load Body is made of solid acid component and unformed refractory oxides;The solid acid component is MCM-22 molecular sieves and Y molecular sieve The mass ratio of mixture, the MCM-22 molecular sieves and the Y molecular sieve is 1:10~10:1;The specific surface of the hydrogenation catalyst For 200~320m2/ g, total pore volume are the ratio of 0.30~0.50ml/g, meleic acid amount 0.50~1.0mmol/g, B acid and L acid It is 0.2~1.0, radial direction anti-crushing power is more than 150N/cm.
Hydrogenation catalyst of the present invention, these, it is preferred to, the silica alumina ratio of the MCM-22 is 10~60, compares table 400~600m of face20.35~0.75ml/g of/g, Kong Rongwei;The Y molecular sieve silica alumina ratio is 5~60, specific surface be 500~ 800m20.8~1.0ml/g of/g, Kong Rongwei, cell parameter 2.430-2.450nm.
Hydrogenation catalyst of the present invention, these, it is preferred to, the X-ray diffraction peak position of the MCM-22 molecular sieves It puts respectively at 3.1 °, 6.5 °, 7.1 °, 9.7 °, 26.1 °.
Hydrogenation catalyst of the present invention, wherein, the B acid of the MCM-22 molecular sieves and the ratio of L acid is preferably 1~ 10, more preferable strong acid ratio >=50%.
Hydrogenation catalyst of the present invention, wherein, the ratio of B acid and the L acid of the Y molecular sieve is preferably 1~10.
Hydrogenation catalyst of the present invention, these, it is preferred to, the Y molecular sieve be Hydrogen, Na+Content is less than 0.05%.
Hydrogenation catalyst of the present invention, wherein, on the basis of catalyst, the vib metals are in terms of oxide Content be preferably 10~30wt%, content of the group VIII metal in terms of oxide is preferably 3~10wt%.
Hydrogenation catalyst of the present invention, wherein, the unformed refractory oxides are preferably aluminium oxide and unformed One or both of sial.
Hydrogenation catalyst of the present invention, these, it is preferred to, which further includes auxiliary agent, and the auxiliary agent is F, B One or both of with P, on the basis of catalyst, the content of the auxiliary agent is 0.1~5wt%.
The present invention also provides a kind of preparation methods of hydrogenation catalyst, are the preparation methods of above-mentioned hydrogenation catalyst, Include the following steps:
(1) Hydrogen MCM-22 molecular sieves hydrothermal treatment, treatment temperature are 300~700 DEG C, 1~6h of processing time;Then Through acid processing or alkali process, acid is nitric acid, hydrochloric acid, citric acid, oxalic acid and acetic acid at least one, acid concentration for 0.01~ 1mol/L, sour treatment temperature are room temperature~100 DEG C, and sour processing time is 20~60min;Alkali is sodium hydroxide and/or hydroxide Potassium, a concentration of 0.01~1mol/L, alkali purification temp are room temperature~100 DEG C, and the alkali process time is 20~60min;
(2) Hydrogen Y molecular sieve hydrothermal treatment, 500~600 DEG C of hydro-thermal process temperature, 3~5h of hydrothermal conditions;So It being handled by acid, acid is at least one of nitric acid, hydrochloric acid, citric acid, oxalic acid and acetic acid, and acid concentration is 0.01~1mol/L, Sour treatment temperature is room temperature~100 DEG C, and sour processing time is 20~60min;
MCM-22 molecular sieves that (3) treated and Y molecular sieve mix with unformed refractory oxides, binding agent, extrusion aid, Molding, then drying and roasting, is made catalyst carrier;
(4) complex solution is configured using active metal and/or auxiliary agent, incipient impregnation, dipping is carried out to catalyst carrier Carrier afterwards is aged, is dried, is roasted to get catalyst.
Except above-mentioned infusion process, ion exchange or hetero atom isomorphous substitution supported active metals and/or auxiliary agent can also be used.
The preparation method of hydrogenation catalyst of the present invention, these, it is preferred to, the temperature of the ageing is room temperature, Time is 1~8h;The temperature of the drying is 100~150 DEG C, and the time is 3~8h;The temperature of the roasting is 400~600 DEG C, the time is 3~8h.
The hydrogenation catalyst of the present invention can be applied to be hydrocracked, in the reaction of hydro-upgrading and hydroisomerizing.It is preferred anti- The condition is answered to be:300~400 DEG C, 6~18MPa of reaction pressure of reaction temperature, hydrogen to oil volume ratio 500~1500, volume space velocity 0.5 ~2.5h-1
Beneficial effects of the present invention:
Catalyst carrier for hydrgenating in the present invention, in being hydrocracked, can flexibly produce heavy naphtha, aviation kerosine and Diesel oil has that products scheme is flexible, and process conditions are adjustable and the features such as good product quality.
Specific embodiment
Following example is method in order to further illustrate the present invention, but be should not be limited thereto.
Embodiment 1
Weigh MCM-22 molecular sieves 50g.In high temperature furnace, steam treatment is passed through, keeps 550 DEG C for the treatment of furnace, water It is heat-treated 4h.Processing 40min is carried out to molecular sieve using the oxalic acid solution 500ml of 0.5mol/L at room temperature.100 DEG C of dry 4h, 550 DEG C of roasting 3h are to get modified molecular screen M1.
Embodiment 2
Weigh MCM-22 molecular sieves 50g.In high temperature furnace, steam treatment is passed through, keeps 600 DEG C for the treatment of furnace, water It is heat-treated 4h.Processing 20min is carried out to molecular sieve using the citric acid solution 400ml of 1mol/L at room temperature.100 DEG C of dry 4h, 500 DEG C of roasting 4h are to get modified molecular screen M2.
Embodiment 3
Weigh MCM-22 molecular sieves 50g.In high temperature furnace, steam treatment is passed through, keeps 700 DEG C for the treatment of furnace, water It is heat-treated 1h.Processing 60min is carried out to molecular sieve using the sodium hydroxide solution 500ml of 0.01mol/L at room temperature.120 DEG C dry Dry 3h, 550 DEG C of roasting 4h are to get modified molecular screen M3.
Embodiment 4
Weigh MCM-22 molecular sieves 50g.In high temperature furnace, steam treatment is passed through, keeps 300 DEG C for the treatment of furnace, water It is heat-treated 6h.Processing 50min is carried out to molecular sieve using the sodium hydroxide solution 400ml of 1mol/L at room temperature.100 DEG C of dryings 4h, 550 DEG C of roasting 4h are to get modified molecular screen M4.
Embodiment 5
Weigh HY molecular sieves 50g.In high temperature furnace, steam treatment is passed through, 500 DEG C for the treatment of furnace is kept, at hydro-thermal Manage 4h.Processing 60min is carried out to molecular sieve at 100 DEG C using the oxalic acid solution 500ml of 0.01mol/L.100 DEG C of dry 4h, 550 DEG C of roasting 4h are to get modified molecular screen Y1.
Embodiment 6
Weigh HY molecular sieves 50g.In high temperature furnace, steam treatment is passed through, 600 DEG C for the treatment of furnace is kept, at hydro-thermal Manage 5h.Processing 20min is carried out to molecular sieve using the citric acid solution 500ml of 1mol/L at room temperature.100 DEG C of dry 4h, 550 DEG C 4h is roasted to get modified molecular screen Y2.
Embodiment 7
Weigh HY molecular sieves 50g.In high temperature furnace, steam treatment is passed through, 550 DEG C for the treatment of furnace is kept, at hydro-thermal Manage 3h.Processing 60min is carried out to molecular sieve using the acetic acid solution 500ml of 0.5mol/L at room temperature.100 DEG C of dry 4h, 550 DEG C 4h is roasted to get modified molecular screen Y3.
Embodiment 8
M1 molecular sieve 1g, Y1 molecular sieves 10g, amorphous silicon aluminium 45g, macroporous aluminium oxide 24g and small porous aluminum oxide 20g are taken, The nitric acid 4g that mass concentration is 65% is added in, carries out kneading and compacting.Catalyst carrier after molding is in 120 DEG C of dry 4h, 550 DEG C 4h is roasted to get catalyst carrier for hydrgenating S1.
Obtained carrier 100g is weighed, by 26.5g nickel nitrates and 31.0g ammonium metatungstates are soluble in water is configured to metal salt Solution carries out incipient impregnation.During ageing 4h, 100 DEG C of dry 4h, then 550 DEG C of roasting 4h in Muffle furnace, catalyst is made C1。
Embodiment 9
M2 molecular sieve 5g, Y2 molecular sieves 30g, amorphous silicon aluminium 25g, macroporous aluminium oxide 20g and small porous aluminum oxide 20g are taken, The nitric acid 4g that mass concentration is 65% is added in, carries out kneading and compacting.Catalyst carrier after molding is in 120 DEG C of dry 4h, 550 DEG C 4h is roasted to get catalyst carrier for hydrgenating S2.
Obtained carrier 100g is weighed, by 26.0g nickel nitrates and 31.0g ammonium metatungstates are soluble in water is configured to metal salt Solution carries out incipient impregnation.During ageing 4h, 100 DEG C of dry 4h, then 550 DEG C of roasting 4h in Muffle furnace, catalyst is made C2。
Embodiment 10
M3 molecular sieve 30g, Y3 molecular sieves 5g, amorphous silicon aluminium 25g, macroporous aluminium oxide 20g and small porous aluminum oxide 20g are taken, The nitric acid 4g that mass concentration is 65% is added in, carries out kneading and compacting.Catalyst carrier after molding is in 100 DEG C of dry 4h, 550 DEG C 4h is roasted to get catalyst carrier for hydrgenating S3.
Obtained carrier 100g is weighed, by 26.5g nickel nitrates and 31.5g ammonium metatungstates are soluble in water is configured to metal salt Solution carries out incipient impregnation.During ageing 4h, 100 DEG C of dry 4h, then 550 DEG C of roasting 4h in Muffle furnace, catalyst is made C3。
Embodiment 11
M4 molecular sieve 50g, Y3 molecular sieves 10g, macroporous aluminium oxide 20g and small porous aluminum oxide 20g are taken, adding in mass concentration is 65% nitric acid 3g carries out kneading and compacting.For catalyst carrier after molding in 100 DEG C of dry 4h, 550 DEG C roast 3h to get adding Hydrogen catalyst carrier S 4.
Obtained carrier 100g is weighed, by 26.0g nickel nitrates and 31.0g ammonium metatungstates are soluble in water is configured to metal salt Solution carries out incipient impregnation.During ageing 4h, 100 DEG C of dry 4h, then 550 DEG C of roasting 4h in Muffle furnace, catalyst is made C4。
Embodiment 12
M2 molecular sieve 20g, Y3 molecular sieves 20g, amorphous silicon aluminium 20g, macroporous aluminium oxide 15g and small porous aluminum oxide 15g are taken, The nitric acid 4g that mass concentration is 65% is added in, carries out kneading and compacting.Catalyst carrier after molding is in 120 DEG C of dry 4h, 550 DEG C 4h is roasted to get catalyst carrier for hydrgenating S5.
Obtained carrier 100g is weighed, by 26.0g nickel nitrates and 31.0g ammonium metatungstates are soluble in water is configured to metal salt Solution carries out incipient impregnation.During ageing 4h, 100 DEG C of dry 4h, then 550 DEG C of roasting 4h in Muffle furnace, catalyst is made C5。
Embodiment 13
M3 molecular sieve 30g, Y3 molecular sieves 3g, macroporous aluminium oxide 47g and small porous aluminum oxide 20g are taken, adding in mass concentration is 65% nitric acid 3g carries out kneading and compacting.For catalyst carrier after molding in 120 DEG C of dry 4h, 550 DEG C roast 4h to get adding Hydrogen catalyst carrier S 6.
Obtained carrier 100g is weighed, by 26.0g nickel nitrates and 31.0g ammonium metatungstates are soluble in water is configured to metal salt Solution carries out incipient impregnation.During ageing 4h, 100 DEG C of dry 4h, then 550 DEG C of roasting 4h in Muffle furnace, catalyst is made C6。
Embodiment 14
M4 molecular sieve 50g, Y2 molecular sieves 15g, macroporous aluminium oxide 15g and small porous aluminum oxide 20g are taken, adding in mass concentration is 65% nitric acid 4g carries out kneading and compacting.For catalyst carrier after molding in 120 DEG C of dry 4h, 550 DEG C roast 4h to get adding Hydrogen catalyst carrier S 7.
Obtained carrier 100g is weighed, by 26.5g nickel nitrates and 31.5g ammonium metatungstates are soluble in water is configured to metal salt Solution carries out incipient impregnation.During ageing 4h, 100 DEG C of dry 4h, then 550 DEG C of roasting 4h in Muffle furnace, catalyst is made C7。
Physical data by the modified MCM-22 of embodiment 1-7 and Y molecular sieve is as shown in table 1.
The physical data of 1 modified MCM-22 of table and Y molecular sieve
Silica alumina ratio Specific surface m2/g Hole holds ml/g CB/CL Strong acid % Cell parameter
M1 20 526.6 0.52 6.92 55.3 /
M2 26 514.2 0.64 7.33 61.2 /
M3 37 413.9 0.71 5.64 50.5 /
M4 13 421.6 0.49 3.68 61.0 /
Y1 9 612.3 0.81 4.69 68.0 2.431
Y2 21 712.4 0.92 6.77 59.2 2.442
Y3 13 699.6 0.87 5.49 50.2 2.436
2 are shown in Table as the physical property of the catalyst prepared by embodiment 8-14.
The physical property of 2 prepared catalyst of table
Embodiment 15
A kind of prepared catalyst C4, C6, C7 be applied to decompressed wax oil and catalytic diesel oil mixed raw material plus hydrogen is anti- Ying Zhong.Table 3 gives the property of used feedstock oil.Reaction condition:380 DEG C, hydrogen partial pressure 10MPa of reaction temperature, hydrogen-oil ratio 1000:1, air speed 1.0h-1.Evaluation result is listed in table 4.
The raw material oil nature that table 3 uses
4 evaluating catalyst result of table
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe Various corresponding changes and deformation, but these corresponding changes and deformation can be made according to the present invention by knowing those skilled in the art It should all belong to the scope of protection of the present invention.

Claims (10)

1. a kind of hydrogenation catalyst, which is characterized in that including active metal and carrier;The active metal is group VIB and the The metal of VIII group, wherein vib metals are molybdenum and/or tungsten, and group VIII metal is cobalt and/or nickel;The carrier is by solid Body acid constituents and unformed refractory oxides composition;The solid acid component is the mixture of MCM-22 molecular sieves and Y molecular sieve, The mass ratio of the MCM-22 molecular sieves and the Y molecular sieve is 1:10~10:1;The specific surface of the hydrogenation catalyst for 200~ 320m2/ g, total pore volume are 0.30~0.50ml/g, the ratio of meleic acid amount 0.50~1.0mmol/g, B acid and L acid is 0.2~ 1.0, radial direction anti-crushing power is more than 150N/cm.
2. hydrogenation catalyst according to claim 1, which is characterized in that the silica alumina ratio of the MCM-22 is 10~60, ratio 400~600m of surface20.35~0.75ml/g of/g, Kong Rongwei;The Y molecular sieve silica alumina ratio is 5~60, specific surface be 500~ 800m20.8~1.0ml/g of/g, Kong Rongwei, cell parameter are 2.430~2.450nm.
3. hydrogenation catalyst according to claim 1, which is characterized in that the strong acid ratio of the MCM-22 molecular sieves is more than Equal to 50%.
4. hydrogenation catalyst according to claim 1, which is characterized in that the ratio of B acid and the L acid of the MCM-22 molecular sieves Be worth is 1~10.
5. hydrogenation catalyst according to claim 1, which is characterized in that the ratio of B acid and the L acid of the Y molecular sieve is 1 ~10.
6. hydrogenation catalyst according to claim 1, which is characterized in that on the basis of catalyst, the vib metals Using the content that oxide is counted as 10~30wt%, the group VIII metal is using the content that oxide is counted as 3~10wt%.
7. hydrogenation catalyst according to claim 1, which is characterized in that the unformed refractory oxides for aluminium oxide and One or both of amorphous silicon aluminium.
8. hydrogenation catalyst according to claim 1, which is characterized in that the catalyst further includes auxiliary agent, and the auxiliary agent is F, one or both of B and P, on the basis of catalyst, the content of the auxiliary agent is 0.1~5wt%.
9. a kind of preparation method of hydrogenation catalyst is the preparation side of claim 1-8 any one of them hydrogenation catalysts Method, which is characterized in that include the following steps:
(1) Hydrogen MCM-22 molecular sieves hydrothermal treatment, treatment temperature are 300~700 DEG C, 1~6h of processing time;Then through acid Processing or alkali process, acid are at least one of nitric acid, hydrochloric acid, citric acid, oxalic acid and acetic acid, and acid concentration is 0.01~1mol/L, Sour treatment temperature is room temperature~100 DEG C, and sour processing time is 20~60min;Alkali be sodium hydroxide and/or potassium hydroxide, concentration For 0.01~1mol/L, alkali purification temp is room temperature~100 DEG C, and the alkali process time is 20~60min;
(2) Hydrogen Y molecular sieve hydrothermal treatment, 500~600 DEG C of hydro-thermal process temperature, 3~5h of hydrothermal conditions;Then it passes through Acid processing, for acid at least one of for nitric acid, hydrochloric acid, citric acid, oxalic acid and acetic acid, acid concentration is 0.01~1mol/L, at acid Reason temperature is room temperature~100 DEG C, and sour processing time is 20~60min;
(3) MCM-22 molecular sieves that treated and Y molecular sieve mix with unformed refractory oxides, binding agent, extrusion aid, into Type, then drying and roasting, is made catalyst carrier;
(4) complex solution is configured using active metal and/or auxiliary agent, carries out incipient impregnation to catalyst carrier, after dipping Carrier is aged, is dried, is roasted to get catalyst.
10. the preparation method of hydrogenation catalyst according to claim 9, which is characterized in that the temperature of the ageing is room Temperature, time are 1~8h;The temperature of the drying is 100~150 DEG C, and the time is 3~8h;The temperature of the roasting for 400~ 600 DEG C, the time is 3~8h.
CN201611263043.4A 2016-12-30 2016-12-30 A kind of hydrogenation catalyst and preparation method thereof Pending CN108262067A (en)

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