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CN108262063A - Hydrogenation catalyst and preparation method thereof - Google Patents

Hydrogenation catalyst and preparation method thereof Download PDF

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Publication number
CN108262063A
CN108262063A CN201611260811.0A CN201611260811A CN108262063A CN 108262063 A CN108262063 A CN 108262063A CN 201611260811 A CN201611260811 A CN 201611260811A CN 108262063 A CN108262063 A CN 108262063A
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China
Prior art keywords
acid
hydrogenation catalyst
catalyst
carrier
metal
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CN201611260811.0A
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Chinese (zh)
Inventor
袁晓亮
张占全
王燕
张志华
王延飞
余颖龙
张雅琳
翟绪丽
付凯妹
谢斌
庄梦琪
张婧元
霍明辰
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Petrochina Co Ltd
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Petrochina Co Ltd
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Priority to CN201611260811.0A priority Critical patent/CN108262063A/en
Publication of CN108262063A publication Critical patent/CN108262063A/en
Pending legal-status Critical Current

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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
    • B01J29/70Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • B01J29/78Crystalline 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
    • B01J29/7876MWW-type, e.g. MCM-22, ERB-1, ITQ-1, PSH-3 or SSZ-25
    • 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
    • B01J2229/18After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself
    • B01J2229/186After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself not in framework positions
    • 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
    • C10G2400/00Products obtained by processes covered by groups C10G9/00 - C10G69/14
    • C10G2400/04Diesel oil

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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 invention relates to a hydrogenation catalyst and a preparation method thereof. The catalyst comprises an active metal and a carrier; the active metal is metal of VIB group and VIII group, wherein the metal of VIB group is molybdenum and/or tungsten, and the metal of VIII group is cobalt and/or nickel; the carrier consists of a solid acid component and an amorphous heat-resistant oxide; the solid acid component is an MCM-22 molecular sieve, the silica-alumina ratio of the molecular sieve is 10-50, and the specific surface area is 400-700 m2The pore volume is 0.35-0.75 ml/g; the specific surface of the hydrogenation catalyst is 200-320 m2the hydrogenation catalyst has the advantages of a total pore volume of 0.30-0.50 ml/g, an infrared acid content of 0.50-1.0 mmol/g, a ratio of B acid to L acid of 0.2-1.0, and a radial crushing resistance of more than 150N/cm., and can be applied to hydrocracking, hydrogenation modification, hydroisomerization and other processes.

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 are acid constituent element and preparation method thereof.
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.Due to MCM- 22 unique composite constructions, the distribution of special acid site and excellent hydrothermal stability, can be applied in hydrocracking catalyst, Have the characteristics that products scheme is flexible, process conditions are adjustable.
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.Using MCM-22 as the load of acid constituent element Type catalyst, applied to be hydrocracked, not disclosed and report in the reactions such as hydroisomerizing and hydro-upgrading.
Invention content
The object of the present invention is to provide a kind of hydrogenation catalyst, which is applied in being hydrocracked, and can flexibly produce Heavy naphtha, aviation kerosine or 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, the molecular sieve Silica alumina ratio is 10~50, and specific surface is 400~700m20.35~0.75ml/g of/g, Kong Rongwei;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, 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, 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%.
Hydrogenation catalyst of the present invention, wherein, on the basis of carrier, the content of the solid acid component is preferably 10 ~80wt%, the content of the unformed refractory oxides is preferably 20~90wt%.
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 unformed refractory oxides are preferably aluminium oxide and unformed At least one of sial.
The present invention also provides a kind of preparation methods of hydrogenation catalyst, are the preparation methods of above-mentioned hydrogenation catalyst, It is characterised in that it includes following steps:
(1) it is molecular sieve modified:Hydrothermal treatment, treatment temperature are 500~600 DEG C, 1~6h of processing time, preferred process 3~5h of time;Then it is sour at least one of nitric acid, hydrochloric acid, citric acid, oxalic acid and acetic acid, acid through acid processing or alkali process A concentration of 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 potassium hydroxide, a concentration of 0.01~1mol/L, alkali purification temp are room temperature~100 DEG C, the alkali process time for 20~ 60min;
(2) modified molecular sieve is mixed with unformed refractory oxides, binding agent, extrusion aid, is molded, then dry roasting It burns, catalyst carrier is made;
(3) catalyst carrier by infusion process, ion exchange or hetero atom isomorphous substitution supported active metals and/or helps Then agent is aged, is dried, is roasted to get catalyst.
The preparation method of hydrogenation catalyst of the present invention, in step (3), the step of infusion process, is preferably:It adopts With active metal and/or auxiliary agent configuration complex solution, incipient impregnation is carried out to catalyst carrier.
The preparation method of hydrogenation catalyst of the present invention, in step (3), it is preferred 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.
Hydrogenation catalyst prepared by the present invention can be applied to be hydrocracked, in the reaction of hydro-upgrading and hydroisomerizing.It is preferred that Reaction condition is: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:
Hydrogenation catalyst in the present invention in being hydrocracked, can flexibly produce heavy naphtha, aviation kerosine and bavin 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 20g.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 60min is carried out to molecular sieve using the oxalic acid solution 200ml of 1mol/L at room temperature.100 DEG C of dry 4h, 550 DEG C roasting 4h to get modified molecular screen M1.
M1 modified molecular screens 10g, amorphous silicon aluminium 50g, macroporous aluminium oxide 20g and small porous aluminum oxide 20g are taken, adds in quality A concentration of 65% nitric acid 4g carries out kneading and compacting.Molecular sieve, amorphous silicon aluminium, macroporous aluminium oxide and small porous aluminum oxide with Butt is remembered.For catalyst carrier after molding in 120 DEG C of dry 4h, 550 DEG C roast 4h to get catalyst carrier for hydrgenating S1.
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 2h, 120 DEG C of dry 4h, then 550 DEG C of roasting 4h in Muffle furnace, catalyst is made C1。
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 1h.Processing 50min is carried out to molecular sieve using the citric acid solution 400ml of 1mol/L at room temperature.100 DEG C of dry 4h, 550 DEG C of roasting 4h are to get modified molecular screen M2.
M2 modified molecular screens 30g, macroporous aluminium oxide 50g and small porous aluminum oxide 20g add in the nitric acid that mass concentration is 65% 4g carries out kneading and compacting.Catalyst carrier after molding is carried in 120 DEG C of dry 4h, 600 DEG C of roasting 4h to get hydrogenation catalyst Body S2.
Obtained carrier 100g is weighed, by 25.0g nickel nitrates and 31.0g ammonium metatungstates are soluble in water is configured to metal salt Solution carries out incipient impregnation.During ageing 4h, 120 DEG C of dry 4h, then 500 DEG C of roasting 4h in Muffle furnace, catalyst is made C2。
Embodiment 3
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 citric acid solution 400ml of 1mol/L at room temperature.100 DEG C of dry 4h, 550 DEG C of roasting 4h are to get modified molecular screen M3.
M3 modified molecular screens 30g, amorphous silicon aluminium 20g, macroporous aluminium oxide 30g and small porous aluminum oxide 20g are taken, adds in quality A concentration of 65% nitric acid 4g carries out kneading and compacting.For catalyst carrier after molding in 120 DEG C of dry 4h, 600 DEG C roast 4h, Up to catalyst carrier for hydrgenating S3.
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 C3。
Embodiment 4
Weigh MCM-22 molecular sieves 50g.In high temperature furnace, steam treatment is passed through, keeps 500 DEG C for the treatment of furnace, water It is heat-treated 3h.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.
M4 modified molecular screens are taken treated molecular sieve 50g, macroporous aluminium oxide 30g and small porous aluminum oxide 20g, add in quality A concentration of 65% nitric acid 3g carries out kneading and compacting.For catalyst carrier after molding in 120 DEG C of dry 4h, 600 DEG C roast 4h, Up to catalyst carrier for hydrgenating S4.
Obtained carrier 100g is weighed, by 26.0g nickel nitrates and 30.0g 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 5
Weigh MCM-22 molecular sieves 50g.In high temperature furnace, steam treatment is passed through, keeps 500 DEG C for the treatment of furnace, water It is heat-treated 3h.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 M5.
M5 modified molecular screens 70g, macroporous aluminium oxide 20g and small porous aluminum oxide 10g are taken, adds in the nitre that mass concentration is 65% Sour 4g carries out kneading and compacting.For catalyst carrier after molding in 120 DEG C of dry 4h, 600 DEG C roast 4h to get hydrogenation catalyst Carrier S 5.
Obtained carrier 100g is weighed, by 25.0g 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 6
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 3h.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 M6.
M6 modified molecular screens 70g, macroporous aluminium oxide 20g and small porous aluminum oxide 10g are taken, adds in the nitre that mass concentration is 65% Sour 4g carries out kneading and compacting.For catalyst carrier after molding in 120 DEG C of dry 4h, 600 DEG C roast 4h to get hydrogenation catalyst Carrier S 6.
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 C6。
Embodiment 7
Weigh MCM-22 molecular sieves 50g.In high temperature furnace, steam treatment is passed through, keeps 500 DEG C for the treatment of furnace, water It is heat-treated 2h.Processing 50min is carried out to molecular sieve using the salpeter solution 500ml of 0.2mol/L at room temperature.100 DEG C of dry 4h, 550 DEG C of roasting 4h are to get modified molecular screen M7.
M7 modified molecular screens 60g, macroporous aluminium oxide 30g and small porous aluminum oxide 10g are taken, adds in the nitre that mass concentration is 65% Sour 3g carries out kneading and compacting.For catalyst carrier after molding in 100 DEG C of dry 4h, 600 DEG C roast 4h to get hydrogenation catalyst Carrier S 7.
Obtained carrier 100g is weighed, by 26.0g 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。
Embodiment 8
Weigh MCM-22 molecular sieves 50g.In high temperature furnace, steam treatment is passed through, keeps 500 DEG C for the treatment of furnace, water It is heat-treated 2h.Using the oxalic acid of 0.2mol/L, acetic acid 1:1 complex solution 500ml carries out processing 50min to molecular sieve at room temperature. 100 DEG C of dry 4h, 550 DEG C of roasting 4h are to get modified molecular screen M8.
M8 modified molecular screens 60g, macroporous aluminium oxide 30g and small porous aluminum oxide 10g are taken, adds in the nitre that mass concentration is 65% Sour 4g carries out kneading and compacting.For catalyst carrier after molding in 100 DEG C of dry 4h, 600 DEG C roast 4h to get hydrogenation catalyst Carrier S 8.
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 C8。
Embodiment 9
Weigh MCM-22 molecular sieves 50g.In high temperature furnace, steam treatment is passed through, keeps 500 DEG C for the treatment of furnace, water It is heat-treated 4h.50min is handled to molecular sieve at 60 DEG C using the potassium hydroxide solution 500ml of 0.2mol/L.100 DEG C of dryings 4h, 550 DEG C of roasting 4h are to get modified molecular screen M9.
M9 modified molecular screens 80g, macroporous aluminium oxide 10g and small porous aluminum oxide 10g are taken, adds in the nitre that mass concentration is 65% Sour 4g carries out kneading and compacting.For catalyst carrier after molding in 100 DEG C of dry 4h, 600 DEG C roast 4h to get hydrogenation catalyst Carrier S 9.
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 C9。
Embodiment 10
Weigh MCM-22 molecular sieves 50g.In high temperature furnace, steam treatment is passed through, keeps 500 DEG C for the treatment of furnace, water It is heat-treated 4h.50min is handled to molecular sieve at 60 DEG C using the potassium hydroxide solution 500ml of 0.2mol/L.100 DEG C of dryings 4h, 550 DEG C of roasting 4h are to get modified molecular screen M10.
M10 modified molecular screens 80g, macroporous aluminium oxide 10g and small porous aluminum oxide 10g are taken, it is 65% to add in mass concentration Nitric acid 3g carries out kneading and compacting.For catalyst carrier after molding in 100 DEG C of dry 4h, 600 DEG C roast 4h to get hydrogenation catalyst Agent carrier S10.
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 C10。
As prepared by above-described embodiment series modified molecular sieve, the physical property of catalyst carrier and catalyst is shown in Table respectively 1st, table 2 and table 3.
The physical property of 1 modified MCM-22 molecular sieves of table
The physical property of serial carrier prepared by table 2
The physical property of catalyst series prepared by table 3
Embodiment 11
Prepared catalyst C3, C5, C9 are applied in the hydrogenation reaction of decompressed wax oil and catalytic diesel oil mixed raw material. Table 4 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 5.
The raw material oil nature that table 4 uses
5 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 (9)

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 be MCM-22 molecular sieves, the silica alumina ratio of the molecular sieve It is 10~50, specific surface is 400~700m20.35~0.75ml/g of/g, Kong Rongwei;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, radial direction anti-crushing power is more than 150N/cm.
2. 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%.
3. 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%.
4. hydrogenation catalyst according to claim 1, which is characterized in that on the basis of carrier, the solid acid component Content is 10~80wt%, and the content of the unformed refractory oxides is 20~90wt%.
5. 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.
6. hydrogenation catalyst according to claim 1, which is characterized in that the unformed refractory oxides for aluminium oxide and At least one of amorphous silicon aluminium.
7. a kind of preparation method of hydrogenation catalyst is the preparation side of claim 1~6 any one of them hydrogenation catalyst Method, which is characterized in that include the following steps:
(1) it is molecular sieve modified:Hydrothermal treatment, treatment temperature are 500~600 DEG C, 1~6h of processing time;Then it is handled through acid Or alkali process, acid are at least one of nitric acid, hydrochloric acid, citric acid, oxalic acid and acetic acid, 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, it is 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) modified molecular sieve is mixed with unformed refractory oxides, binding agent, extrusion aid, is molded, then drying and roasting, Catalyst carrier is made;
(3) catalyst carrier is by infusion process, ion exchange or hetero atom isomorphous substitution supported active metals and/or auxiliary agent, so After be aged, dry, roast to get catalyst.
8. the preparation method of hydrogenation catalyst according to claim 7, which is characterized in that in step (3), the infusion process The step of be:Using active metal and/or auxiliary agent configuration complex solution, incipient impregnation is carried out to catalyst carrier.
9. the preparation method of hydrogenation catalyst according to claim 7, which is characterized in that in step (3), the ageing Temperature is room temperature, and the 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 It it is 400~600 DEG C, the time is 3~8h.
CN201611260811.0A 2016-12-30 2016-12-30 Hydrogenation catalyst and preparation method thereof Pending CN108262063A (en)

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