CN102319578A - Hydrofining catalyst and preparation method thereof - Google Patents

Hydrofining catalyst and preparation method thereof Download PDF

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CN102319578A
CN102319578A CN201110191189A CN201110191189A CN102319578A CN 102319578 A CN102319578 A CN 102319578A CN 201110191189 A CN201110191189 A CN 201110191189A CN 201110191189 A CN201110191189 A CN 201110191189A CN 102319578 A CN102319578 A CN 102319578A
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catalyst
boehmite
slurries
amorphous aluminum
aluminum silicide
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CN102319578B (en
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吕龙刚
王廷海
王宗宝
钱颖
常晓昕
颉伟
梁顺琴
孙利民
潘曦竹
马好文
郑云弟
康宏敏
向永生
吴杰
林宏
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Petrochina Co Ltd
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Petrochina Co Ltd
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Abstract

The invention relates to a hydrofining catalyst and a preparation method thereof. The catalyst is characterized in that silicon-containing alumina is used as a carrier, molybdenum and nickel are used as active components, phosphorus and alkali metal and/or alkaline earth metal are used as auxiliaries, and the total weight of the catalyst is 20-30 wt% of molybdenum oxide, 2-10 wt% of nickel oxide, 0-5 wt% of phosphorus oxide, 0-5 wt% of alkali metal and/or alkaline earth metal oxide and 2.5-31.2 wt% of silicon oxide. The specific surface area of the catalyst is 200-300 m2The pore volume is 0.5-0.8 ml/g. The silicon-containing alumina carrier precursor is pseudo-boehmite containing amorphous silica-alumina, which is obtained by firstly preparing amorphous silica-alumina slurry and pseudo-boehmite slurry, and then mixing, aging, filtering, drying and other post-treatment processes. The catalyst has high hydrogenation activity and desulfurization activity and good stability, and is suitable for hydrorefining of medium and low distillate oil.

Description

A kind of Hydrobon Catalyst And Its Preparation Method
Technical field
The present invention relates to a kind of Hydrobon Catalyst And Its Preparation Method, particularly a kind of preparation method of hydrofining catalyst carrier presoma.
Background technology
In recent years, along with the increasingly stringent of environmental legislation, more and more harsher to the requirement of sulfur content in the oil product and nitrogen content; Simultaneously since crude quality worse and worse, impurity contents such as sulphur, nitrogen are increasingly high, and are therefore also increasingly high to the requirement of Hydrobon catalyst.For example when coker gas oil being carried out the hydrofinishing processing; The nitrogen compound of high level especially basic nitrogen compound can be adsorbed on the acidic site of catalyst; Cause the catalyst desulfurizing denitrification activity to descend, be a kind of novel carriers material of exploitation or improve the catalyst activity constituent content and improve the emphasis that Hydrobon catalyst removes the impurity ability.People are when being optimized alumina support specific area, pore volume and aperture; Through introducing modifying elements such as silicon, titanium, phosphorus, come the modulation alumina support surface acidity, improve the strong interaction between active component and alumina support or new cooperative effect occurs.Have the amorphous aluminum silicide specific area height that divergence hole distributes, anti-agglutinatting property can be good, and it is active to have certain acid catalysis, therefore prepare in the process at Hydrobon catalyst often to be used, but there is the relatively poor defective of mouldability in amorphous aluminosilicate.At present, the preparation method of siliceous aluminium oxide is a lot, concludes to get up to be mainly two kinds, and a kind of is in alumino-silicate, to add a spot of aluminium oxide (2~10wt%) as structural promoter; Another kind is in aluminium oxide, to add a spot of alumino-silicate, comes the modulation alumina surface acid, improves its specific area.
US4721696 discloses a kind of employing pH swing method and has prepared siliceous method of alumina; Mainly be used as the carrier of sulfur-bearing and metal impurities material hydrotreating catalyst; Silicone content generally is no more than 15wt%, and silica mainly is to be purpose as structural stabilizing agent rather than so that more acid centre to be provided.
CN1267187C discloses a kind of silica-alumina that contains structure of similar to thin diaspore; Described carrier silica content is high, and is silicon-containing compound solution directly or also to be flowed be incorporated in the boehmite slurries, and purpose is that the aluminium content that increases four-coordination improves the amount of aluminium oxide acid strength and acid; The siliceous aluminium oxide of preparation has very high cracking activity; But higher cracking activity has reduced liquid yield as catalyst carrier for hydrgenating.
CN1074303C has proposed the manufacturing approach of a kind of aluminium oxide and monox composite oxides; It mixes the solution in salic source and the solution in silicon oxide-containing source earlier; In mixed solution, add hydrochloric acid then and obtain colloidal sol; In colloidal sol, add NaOH again and obtain gel, alumina source and silica source in the gel reacted under high temperature, high pressure obtain the powdery alumino-silicate.But the composite oxides of this method preparation have a large amount of micropores, are inappropriate for the carrier as the medium-low distillate oil hydrotreating catalyst.
CN1048957C discloses and has prepared method amorphous, the catalytic activity silica-alumina; Adopt tetraalkylammonium hydroxide, tri-alkoxy aluminium and positive silicic acid tetraalkyl ester hydrolysis and gel to obtain; This gel has the hole dimension that can control, and its specific area is at least 500m 2/ g, the mol ratio of silica and alundum (Al was at least 30: 1.This silica-alumina gel is mainly used in lighter hydrocarbons isomery and oligomerizing.
CN1306977C discloses a kind of silica-alumina and preparation method thereof; Concrete steps are to adopt coprecipitation to prepare a kind of salic water mixed liquid earlier; Introduce a kind of solution of silicon-containing compound again; Be a kind of mother liquor of synthesis of molecular sieve, make silica-alumina through aging, drying.This carrier is mainly used in the preparation of catalytic cracking catalyst.
Summary of the invention
The object of the present invention is to provide the Catalysts and its preparation method of high, desulphurizing activated good, the good stability of a kind of hydrogenation activity; The catalyst carrier presoma is the boehmite that contains amorphous aluminum silicide, the invention solves shortcomings such as poor, difficult moulding of amorphous aluminum silicide peptization property and pure alumina support acidity be weak.
Hydrobon catalyst of the present invention is a carrier with siliceous aluminium oxide, it is characterized in that catalyst is an active component with molybdenum, nickel; Add phosphorus and alkali metal and/or alkaline-earth metal as auxiliary agent,, contain molybdenum oxide 20~30wt% in catalyst weight; Nickel oxide 2~10wt%; (preferably 0.8~5wt%), (preferably 1~5wt%), silica 2.5~31.2wt% (preferably 2.5~25wt%) for alkali metal and/or alkaline earth oxide 0~5wt% for phosphorous oxides 0~5wt%.Specific surface area of catalyst 200~300m 2/ g, pore volume 0.5~0.8ml/g; The presoma of siliceous alumina support is the boehmite that contains amorphous aluminum silicide; It is through at first preparing amorphous aluminum silicide slurries and boehmite slurries; Above-mentioned amorphous aluminum silicide slurries are mixed, wear out according to the ratio of silica content 5~40wt% with the boehmite slurries; Ageing time is 10~30min, obtains containing the boehmite of amorphous aluminum silicide through the last handling process that comprises filtration, washing, drying then.
The most outstanding characteristics of Hydrobon catalyst of the present invention are that the presoma of the employed siliceous alumina support of catalytic amount is the boehmite that contains amorphous aluminum silicide; Having selected it is to mix, wear out with preparing amorphous aluminum silicide slurries and boehmite slurries earlier; And include filtration, dry last handling process obtains; The mixed process of these amorphous aluminum silicide slurries and boehmite slurries; Both being different from simple and mechanical mixing of two kinds of powders of amorphous aluminum silicide and boehmite, is not again the structure of amorphous aluminum silicide coated alumina type.With two bursts of mixing of materials, one side amorphous aluminum silicide and boehmite reciprocation; On the other hand, also be accompanied by reaction between a spot of free aluminum ion and the silicate ion.
The present invention also provides a kind of preparation method who contains the boehmite of amorphous aluminum silicide; It is characterized in that amorphous aluminum silicide slurries and boehmite slurries and stream mix or a kind of material joined in the another kind of material mixing, mix finish after, aging 10~30min; Filter; Usually wash to sodium ions content less than 0.5wt%, at 80~120 ℃ of down dry 2~20h, obtain containing the boehmite of amorphous aluminum silicide.Its specific area is preferably 250~400m 2/ g, pore volume is preferably 0.7~1.4ml/g, and infrared acidity is preferably 0.28~0.55mmol/g, so that the specific surface area of catalyst that makes at last, pore volume etc. satisfy requirement of the present invention.
The prepn process of pseudoboehmite that contains amorphous aluminum silicide provided by the invention comprises the preparation of amorphous aluminum silicide slurries and the preparation of boehmite slurries; And with these two kinds of slurries mixing; The mixing of two kinds of slurries can be adopted and flow to mix or a kind of slurries are joined in the another kind of slurries and mix; Wear out then, obtain containing the boehmite of amorphous aluminum silicide again through last handling processes such as filtration, washing, dryings.PH value of solution is preferably 9.0~10.5 when aging, and temperature is preferably 20~65 ℃, and the time is preferably 10~25min.Baking temperature is preferably 80~120 ℃.
The present invention is not particularly limited the preparation method of amorphous aluminum silicide slurries and boehmite slurries, adopts current techique to get final product, and can adopt existing nitrate method or carbonizatin method like the preparation of boehmite slurries.
The present invention provides a kind of preparation method of amorphous aluminum silicide slurries simultaneously, comprising:
(a) compound concentration is 10~150gAl 2O 3The sodium metaaluminate of/L or sodium aluminate solution are added in the glue jar, are controlled to 15~50 ℃ of glue jar temperature.
(b) compound concentration is 50~200gSiO 2The silicon-containing compound solution of/L joins silicon-containing compound solution in the solution of (a), control pH value 11.5~13.
(c) under the condition of low whipping speed greater than 250r/min, feed the carbon dioxide of concentration greater than 20v% continuously, the flow of control carbon dioxide is at 1~10Nm 3/ h, with time 20~40min, control endpoint pH 7.5~9.5 neutralizes and finishes in the control.
(d) in pH value 7.5~9.5, the solution 5~20min of aging (c) preparation obtains the amorphous aluminum silicide slurries under the condition that temperature is 25~40 ℃.
Preferably with carbon dioxide process preparation, silicon-containing compound can be waterglass, Ludox to amorphous aluminum silicide slurries of the present invention, waterglass preferably, and concentration of sodium silicate is counted 50~200gSiO with silica 2/ L is preferably 80~120gSiO 2/ L; The concentration of sodium metaaluminate or sodium aluminate solution is counted 10~150gAl with aluminium oxide 2O 3/ L is preferably 35~110gAl 2O 3/ L; Ageing time preferably is controlled at 5~15min; Control silica alumina ratio 40~60wt% in the final amorphous aluminum silicide.
The present invention also provides a kind of preparation method of boehmite slurries.Sodium metaaluminate or sodium aluminate solution are added in the glue jar, feed carbon dioxide through becoming glue, the aging boehmite slurries that obtain with intermittence or continuous mode.The concentration of sodium metaaluminate or sodium aluminate solution is 20~150gAl 2O 3/ L; Concentration of carbon dioxide is preferably between 40~100v% greater than 20v%, and the flow of carbon dioxide is 1~10Nm 3/ h; Become 20~65 ℃ of glue temperature, best 30~45 ℃; Become glue endpoint pH 9.0~10.5; Become glue and ageing time sum preferably to be no more than 40min, be advisable with 25~35min.
In the preparation process of boehmite slurries of the present invention; Become glue terminal point pH preferably to be controlled at 9.0~10.5; The pH value is lower than at 9.0 o'clock, the easy and reaction of sodium bicarbonate generation silk sodium stone structure of the boehmite of formation, and the silk sodium stone of generation is a kind of insoluble salt; Hindered the washing of sodium ion, might influence the serviceability of aluminium oxide as carrier.
The boehmite best surfaces acidic site that contains amorphous aluminum silicide of the present invention's preparation is main with the weak acid position.
The boehmite that contains amorphous aluminum silicide that the present invention selects for use promptly has the high acidity of amorphous aluminum silicide, the characteristic of high-specific surface area, contains the advantage of boehmite simultaneously, has overcome the problem of amorphous aluminum silicide moulding difference.The aluminium oxide that contains amorphous aluminum silicide of preparation is specially adapted to do the carrier of hydrogenation catalyst.
Can contain alkali metal and/or alkaline-earth metal in the catalyst of the present invention, content is 0~5wt%, is preferably 1~5wt%.Alkali metal and/or alkaline-earth metal are among one among Li, Na, K, Be, Mg, Ca, the Sr or multiple, one or more among preferred Li, K, the Mg.When catalyst is used for medium-low distillate oil hydrofinishing; Alkene is the one of the main reasons that causes catalysqt deactivation in the polymerisation of catalyst surface; The easy polymerization of alkene in the oil product forms colloid, covers on the hydrogenation sites of catalyst, has reduced the activated centre number of catalyst surface; On the other hand, the duct of the polymer plugging catalyst of generation influences the diffusion of reactant and product molecule.Therefore; Hydrogenation activity and stabilized hydrogenation property can be improved through adjustment catalyst surface Acidity of Aikalinity,, the Acidity of Aikalinity on catalyst carrier surface can be changed through adding alkali metal and/or alkaline-earth metal; Help reducing the deposition of carbonaceous in the hydrogenation process, colloid, thereby prolong the service life of catalyst.Alkali metal and/or alkaline-earth metal preferably add with the form of solubility nitrate, acetate or citrate among the present invention.
Can contain phosphorus in the catalyst of the present invention, content is 0~5wt%, is preferably 0.8~5wt%.After adding phosphorus, can effectively regulate the alumina support physicochemical property, make pore distribution concentration; Improve the weak acid of carrier, reduce strong acid; Improve the heat endurance of carrier.Phosphorus preferably adds with phosphoric acid or phosphatic form among the present invention.
The present invention does not do detailed qualification to the Preparation of catalysts method, as adopting the equi-volume impregnating preparation.
Catalyst carrier of the present invention is to adopt the current techique preparation, and the present invention does not limit.Catalyst carrier can add one or more in phosphorus, alkali metal, the alkaline-earth metal before extruded moulding.Recommend to adopt one of following method to obtain:
Method one: will contain boehmite and nitric acid, the water mixer kneader of amorphous aluminum silicide, extruded moulding, 80~140 ℃ of oven dry, 400~700 ℃ of roasting 3~6h obtain catalyst carrier.
Method two: siliceous alumina support is through before extruded moulding, adding one or more acquisitions in alkali metal, alkaline-earth metal, the P elements.As will contain predecessor, nitric acid, the water mixer kneader of boehmite and alkali metal, alkaline-earth metal and/or the P elements of amorphous aluminum silicide, and extruded moulding, 80~140 ℃ of oven dry, 400~700 ℃ of roasting 3~6h obtain catalyst carrier.
Method three: in containing the boehmite of amorphous aluminum silicide, add after nitric acid, water mediates; Extruded moulding, 80~120 ℃ of oven dry, 300~600 ℃ of roasting 3~6h; Flood the precursor solutions such as soluble-salt of alkali metal, alkaline-earth metal and/or P elements then; 80~140 ℃ of oven dry, 400~700 ℃ of roasting 3~6h make catalyst carrier.
The present invention also provides a kind of above-mentioned Preparation of catalysts method, and the aqueous solution that will contain molybdenum, nickel soluble-salt impregnated on the carrier, and dry back makes catalyst at 300~500 ℃ of following roasting 3~6h.
Alkali metal and/or alkaline-earth metal and auxiliary agent phosphorus all can add when the preparation carrier; Also can be after the carrier moulding; Molybdenum, nickel are added in the carrier before adding in advance; The aqueous solution that will contain molybdenum, nickel soluble-salt again impregnated on the siliceous alumina support, and dry back makes catalyst at 300~500 ℃ of following roasting 3~6h.Can also be when dipping molybdenum, nickel; Add simultaneously with molybdenum, nickel; Be about to alkali metal, alkaline-earth metal and/or P elements and be added to the aqueous solution that contains molybdenum, nickel soluble-salt and impregnated on the siliceous alumina support, dry back makes catalyst at 300~500 ℃ of following roasting 3~6h.
Can be more specifically in containing the boehmite of amorphous aluminum silicide, add nitric acid, water carries out mixer kneader, extruded moulding, 80~120 ℃ of oven dry; 300~600 ℃ of roasting 3~6h flood the soluble-salt solution of alkali metal, alkaline-earth metal and/or P elements, 80~120 ℃ of oven dry then; 400~700 ℃ of roasting 4~6h; With the aqueous solution dipping that contains molybdenum, nickel soluble-salt, dry back makes catalyst at 300~500 ℃ of following roasting 3~6h again.
The active component molybdenum preferably adds with the form of ammonium molybdate among the present invention; Nickel is to add with the form of soluble-salt, like nickel nitrate, nickel acetate, nickel chloride or nickelous sulfate, and preferred nickel nitrate, nickel acetate.
Hydrogenation catalyst hydrogenation activity of the present invention and desulphurizing activated height, chemical stability and Heat stability is good, coke content is low, long service life.
The specific embodiment
Preparation catalyst agents useful for same source:
Ammonium molybdate: Shanghai colloidization factory
Nickel nitrate: Xi'an chemical reagent factory
Industry amorphous aluminum silicide: the safe photoinitiator chemical in Zibo Co., Ltd
Industry boehmite: Zibo Wanlin Chemical Technology Co., Ltd.
Analytical method:
Oil distillation: adopt oil product test method SYB-2110-60 to measure;
Bromine valency: adopt the ICl method to measure, show with gram bromine/100 gram oil meters;
Diene: adopt apple acid anhydrides method to measure, show with gram iodine/100 gram oil meters;
Arsenic: adopt the DV-4300 Atomic Emission Spectrometer AES to measure;
Sulphur: adopt the WK-2B Microcoulomb instrument to measure;
Colloid: adopt oil product test method SYB-2103-60 to measure;
Catalyst crystalline phases: adopt BRUKER D 8ADVERCE type X-ray diffractometer is measured;
Infrared acidity: adopt pyridine-infrared mensuration;
Specific area, pore volume: adopt low temperature N 2The method of adsorption-desorption is measured.
Embodiment 1:
Configuration 2L concentration is 100gAl 2O 3The sodium aluminate solution of/L places in the glue jar, is controlled to 40 ℃ of glue jar temperature, under stirring condition, feeds 60v%CO 2+ 40v% Air mixing gas, the flow of carbon dioxide is 2Nm in the gaseous mixture 3/ h.When the pH value reaches 10.5, stop to feed mist, aging then 25min obtains the boehmite slurries.
Configuration 4L concentration is 100gAl 2O 3The sodium aluminate solution of/L places in the glue jar, adds 2L 100gSiO then 2The sodium silicate solution of/L is controlled to 30 ℃ of glue jar temperature, feeds 60v%CO 2+ 40v% Air mixing gas, CO in the gaseous mixture 2Flow be 3Nm 3/ h, the control endpoint pH is 9.5, aging 10min obtains the amorphous aluminum silicide slurries.
Under continuous stirring condition, 3L amorphous aluminum silicide slurries are joined in the 1L boehmite slurries, 40 ℃ of control mixing temperatures, aging 10min, filtration washing is to Na +Content obtains containing the boehmite of amorphous aluminum silicide less than 0.5%, 120 ℃ of dry 8h.
Boehmite and phosphoric acid, nitric acid, the water mixer kneader that will contain amorphous aluminum silicide are behind the extruded moulding, 120 ℃ of oven dry; 500 ℃ of roasting 3h use the saturated impregnated carrier of magnesium nitrate solution then, 120 ℃ of oven dry; 600 ℃ of roasting 4h obtain the alumina support of siliceous, phosphorus and magnesium.Nickel nitrate, ammonium molybdate be dissolved in the water jointly process maceration extract; Be impregnated on the 100g carrier 120 ℃ of oven dry, 420 ℃ of roasting 4h; Obtain containing molybdenum oxide 24wt%, nickel oxide 8wt%, silica 15.8wt%, phosphorus pentoxide 2wt%, the catalyst C-1 of magnesia 3wt%.
Embodiment 2:
The preparation of amorphous aluminum silicide slurries is carried out according to embodiment 1.
Configuration 2L concentration is 150gAl 2O 3The sodium aluminate solution of/L places in the glue jar, is controlled to 35 ℃ of glue jar temperature, and under stirring condition, feeding concentration is 70v% CO 2+ 30v% Air mixing gas, the flow of carbon dioxide is 4Nm in the gaseous mixture 3/ h stops to feed mist when the pH value reaches 10.0, aging 20min obtains the boehmite slurries.
Under continuous stirring condition, 2L boehmite slurries are joined in the 3L amorphous aluminum silicide slurries, 30 ℃ of control mixing temperatures, aging 15min, filtration washing is to Na +Content obtains containing the boehmite of amorphous aluminum silicide less than 0.5%, 120 ℃ of dry 9h.
Boehmite and phosphoric acid, nitric acid, the water mixer kneader that will contain amorphous aluminum silicide, behind the extruded moulding, 120 ℃ of oven dry, 550 ℃ of roasting 4h obtain alumina support siliceous, phosphorus.Nickel acetate, ammonium molybdate, potassium nitrate is dissolved in the water jointly processes maceration extract; Be impregnated on the 100g carrier 120 ℃ of oven dry, 450 ℃ of roasting 4h; Obtain containing molybdenum oxide 20wt%, nickel oxide 4wt%, silica 12wt%, phosphorus pentoxide 2.5wt%, the catalyst C-2 of potassium oxide 1.5wt%.
Embodiment 3:
The preparation of boehmite slurries is carried out according to embodiment 1.
Configuration 2L concentration is 130gAl 2O 3The sodium aluminate solution of/L places in the glue jar, adds 2L 80gSiO then 2The sodium silicate solution of/L, 20 ℃ of control reaction temperatures feed 50v%CO 2+ 50v% Air mixing gas, CO in the mist 2Flow be 5Nm 3/ h, the control endpoint pH is 9.0, aging 20min obtains the amorphous aluminum silicide slurries.
Under continuous stirring condition, 1L boehmite slurries are joined in the glue jar with 3L amorphous aluminum silicide slurries and stream, 35 ℃ of control mixing temperatures, aging 15min, filtration washing is to Na +Content obtains containing the boehmite of amorphous aluminum silicide less than 0.5%, 120 ℃ of dry 8h.
Boehmite and phosphoric acid, lithium acetate, nitric acid, the water mixer kneader that will contain amorphous aluminum silicide, behind the extruded moulding, 120 ℃ of oven dry, 550 ℃ of roasting 4h obtain the alumina support of siliceous, phosphorus and lithium.Nickel acetate, ammonium molybdate be dissolved in the water jointly process maceration extract; Be impregnated on the 100g carrier; 120 ℃ of oven dry, 460 ℃ of roasting 4h obtain containing the catalyst C-3 of molybdenum oxide 25wt%, nickel oxide 5wt%, silica 18.1wt%, phosphorus pentoxide 3.5wt%, lithia 4.0wt%.
Embodiment 4:
The preparation of amorphous aluminum silicide slurries and boehmite slurries is carried out according to embodiment 1.
Under continuous stirring condition, 1L boehmite slurries are joined in the glue jar with 1.5L amorphous aluminum silicide slurries and stream, 40 ℃ of control mixing temperatures, aging 18min, filtration washing is to Na +Content obtains containing the boehmite of amorphous aluminum silicide less than 0.5%, 100 ℃ of dry 10h.
Boehmite and phosphoric acid, nitric acid, the water mixer kneader that will contain amorphous aluminum silicide, behind the extruded moulding, 120 ℃ of oven dry; 500 ℃ of roasting 4h use the saturated impregnated carrier of strontium nitrate solution then, 120 ℃ of oven dry; 600 ℃ of roasting 4h obtain the alumina support of siliceous, phosphorus and strontium.Nickel nitrate, ammonium molybdate be dissolved in the water jointly process maceration extract; Be impregnated on the 100g carrier; 120 ℃ of oven dry, 480 ℃ of roasting 3h obtain containing the catalyst C-4 of molybdenum oxide 28wt%, nickel oxide 7wt%, phosphorus pentoxide 1.5wt%, silica 12wt%, strontium oxide strontia 3.5wt%.
Embodiment 5:
Configuration 2L concentration is 80gAl 2O 3The sodium aluminate solution of/L places in the glue jar, and being controlled to glue jar temperature is 50 ℃, and under continuous stirring condition, feeding concentration is 80v%CO 2+ 20v% Air mixing gas, the flow of carbon dioxide is 5Nm in the gaseous mixture 3/ h stops to feed mist when the pH value reaches 10.0, aging 20min obtains the boehmite slurries.
Configuration 3L concentration is 95gAl 2O 3The sodium aluminate solution of/L places in the glue jar, adds 2L65gSiO then 2The sodium silicate solution of/L, 25 ℃ of control reaction temperatures feed 60v%CO 2+ 40v% Air mixing gas, CO in the gaseous mixture 2Flow be 4Nm 3/ h, the control endpoint pH is 9.5, aging 15min obtains the amorphous aluminum silicide slurries.
Under continuous stirring condition, 2L boehmite slurries are joined in the glue jar with 2L amorphous aluminum silicide slurries and stream, 60 ℃ of control mixing temperatures, aging 10min, filtration washing is to Na +Content obtains containing the boehmite of amorphous aluminum silicide less than 0.5%, 120 ℃ of dry 8h.
Boehmite and phosphoric acid, nitric acid, the water mixer kneader that will contain amorphous aluminum silicide, behind the extruded moulding, 120 ℃ of oven dry; 480 ℃ of roasting 4h use potassium nitrate and the saturated impregnated carrier of strontium citrate solution, 120 ℃ of oven dry then; 550 ℃ of roasting 4h obtain the alumina support of siliceous, phosphorus, potassium and strontium.Nickel nitrate, ammonium molybdate be dissolved in the water jointly process maceration extract; Be impregnated on the 100g carrier; 120 ℃ of oven dry; 500 ℃ of roasting 3h obtain containing the catalyst C-5 of molybdenum oxide 26wt%, nickel oxide 10wt%, phosphorus pentoxide 1.0wt%, silica 9.5wt%, potassium oxide 1.5wt%, strontium oxide strontia 2.0wt%.
Embodiment 6:
The configuration of boehmite slurries and amorphous aluminum silicide slurries is carried out according to embodiment 5.
Get 3L amorphous aluminum silicide slurries and join in the glue jar with 1L boehmite slurries and stream, 25 ℃ of control reaction temperatures, aging 25min, filtration washing is to Na +Content obtains containing the boehmite of amorphous aluminum silicide less than 0.5%, 120 ℃ of following dry 8h.
Boehmite and phosphoric acid, nitric acid, the water mixer kneader that will contain amorphous aluminum silicide, behind the extruded moulding, 120 ℃ of oven dry; 480 ℃ of roasting 4h use the saturated impregnated carrier of lithium citrate solution then, 120 ℃ of oven dry; 580 ℃ of roasting 4h obtain the alumina support of siliceous, phosphorus and lithium.Nickel acetate, ammonium molybdate be dissolved in the water jointly process maceration extract; Be impregnated on the 100g carrier; 120 ℃ of oven dry, 460 ℃ of roasting 3h obtain containing the catalyst C-6 of molybdenum oxide 23wt%, nickel oxide 8wt%, phosphorus pentoxide 1.5wt%, silica 14.9wt%, lithia 4.5wt%.
Embodiment 7:
The preparation of boehmite slurries is carried out according to embodiment 5.
Configuration 2L concentration is 115gAl 2O 3The sodium aluminate solution of/L places in the glue jar, adds 2L85gSiO 2The sodium silicate solution of/L, 35 ℃ of control reaction temperatures feed 50v%CO 2+ 50v% Air mixing gas, CO in the gaseous mixture 2Flow be 6Nm 3/ h, the control endpoint pH is 9.5, aging 5min obtains the amorphous aluminum silicide slurries.
Under continuous stirring condition, 1L boehmite slurries are joined in the glue jar with 2L amorphous aluminum silicide slurries and stream, 40 ℃ of control mixing temperatures, aging 30min, filtration washing is to Na +Content obtains containing the boehmite of amorphous aluminum silicide less than 0.5%, 120 ℃ of dry 8h.
Boehmite and phosphoric acid, nitric acid, the water mixer kneader that will contain amorphous aluminum silicide, behind the extruded moulding, 120 ℃ of oven dry; 480 ℃ of roasting 4h use the saturated impregnated carrier of liquor kalii acetici then, 120 ℃ of oven dry; 680 ℃ of roasting 4h obtain the alumina support of siliceous, phosphorus and potassium.Nickel acetate, ammonium molybdate be dissolved in the water jointly process maceration extract; Be impregnated on the 100g carrier; 120 ℃ of oven dry, 460 ℃ of roasting 4h obtain containing the catalyst C-7 of molybdenum oxide 26.5wt%, nickel oxide 3.5wt%, phosphorus pentoxide 0.8wt%, silica 20.7wt%, potassium oxide 1.2wt%.
Embodiment 8:
The preparation of boehmite that contains amorphous aluminum silicide is with embodiment 1.
To contain boehmite and nitric acid, the water mixer kneader of amorphous aluminum silicide, behind the extruded moulding, 120 ℃ of oven dry, 500 ℃ of roasting 3h use the saturated impregnated carrier of magnesium nitrate solution then, 120 ℃ of oven dry, and 600 ℃ of roasting 4h obtain siliceous and alumina support magnesium.Nickel nitrate, ammonium molybdate be dissolved in the water jointly process maceration extract, be impregnated on the 100g carrier, 120 ℃ of oven dry, 420 ℃ of roasting 4h obtain containing the catalyst C-8 of molybdenum oxide 24wt%, nickel oxide 8wt%, silica 16.3wt%, magnesia 3wt%.
Embodiment 9:
The preparation of boehmite that contains amorphous aluminum silicide is with embodiment 2.
Boehmite and phosphoric acid, nitric acid, the water mixer kneader that will contain amorphous aluminum silicide, behind the extruded moulding, 120 ℃ of oven dry, 600 ℃ of roasting 4h obtain siliceous and alumina support phosphorus.Nickel nitrate, ammonium molybdate be dissolved in the water jointly process maceration extract, be impregnated on the 100g carrier, 120 ℃ of oven dry, 480 ℃ of roasting 3h obtain containing the catalyst C-9 of molybdenum oxide 28wt%, nickel oxide 7wt%, phosphorus pentoxide 1.5wt%, silica 12.7wt%.
Comparative Examples 1:
With 2L concentration is 100gAl 2O 3The sodium aluminate solution of/L places in the glue jar, is controlled to 40 ℃ of glue jar temperature, and under continuous stirring condition, feeding concentration is 60v%CO 2+ 40v% Air mixing gas, the flow of carbon dioxide is 2Nm in the gaseous mixture 3/ h stops to feed gaseous mixture when the pH value reaches 10.5, aging 25min obtains the boehmite slurries.
With 4L concentration is 140gAl 2O 3The sodium aluminate solution of/L places in the glue jar, adds 2L10gSiO then 2The sodium silicate solution of/L, 30 ℃ of control reaction temperatures feed 60v%CO 2+ 40v% Air mixing gas, CO in the gaseous mixture 2Flow be 3Nm 3/ h, the control endpoint pH is 9.5, aging 10min obtains the amorphous aluminum silicide slurries.
Under continuous stirring condition, 3L amorphous aluminum silicide slurries are joined in the 1L boehmite slurries, 40 ℃ of control mixing temperatures, aging 10min, filtration washing is to Na +Content obtains containing the boehmite of amorphous aluminum silicide less than 0.5%, 120 ℃ of dry 8h.
Boehmite and phosphoric acid, nitric acid, the water mixer kneader that will contain amorphous aluminum silicide are behind the extruded moulding, 120 ℃ of oven dry; 500 ℃ of roasting 3h use the saturated impregnated carrier of potassium nitrate solution then, 120 ℃ of oven dry; 950 ℃ of roasting 4h obtain the alumina support of siliceous, phosphorus and potassium.Nickel nitrate, ammonium molybdate be dissolved in the water jointly process maceration extract; Be impregnated on the 100g carrier 120 ℃ of oven dry, 400 ℃ of roasting 4h; Obtain containing molybdenum oxide 24wt%, nickel oxide 8wt%, silica 1.6wt%, phosphorus pentoxide 2wt%, the catalyst S of magnesia 3wt%-1.
Comparative Examples 2:
This Comparative Examples prepares silica-alumina according to the 3 described methods of embodiment among the CN1267187C,
Concrete steps are following:
Take by weighing the 1000g aluminum nitrate, be dissolved into 2L aluminum nitrate solution a3 (Al with deionized water 2O 3Concentration is 65g/L); The 500ml concentrated ammonia liquor is diluted to 1500ml solution b3 with deionized water; Preparation 500ml89.6SiO 2The sodium silicate solution c3 of/L; Get 35g NaOH, be dissolved into 150ml solution d3 with deionized water.
In becoming the glue jar, add the 1.7L deionized water earlier, stir and be heated to 40 ℃, also stream adds solution a3 and b3 then; Regulating flow, to make the pH value of reaction system be 8, after reaction finishes again pH be 8,60min wears out under 45 ℃ of conditions of temperature; Behind aging the end, under stirring condition, add solution c3 and d3 successively, and control pH is 8.2; 50 ℃ of temperature are warming up to 95 ℃ then and also filter behind the constant temperature 20h.Cakes with deionized water washing 4 times, 120 ℃ of dry 15h obtain the silica-alumina composite granule.
With silica-alumina composite granule and phosphoric acid, lithium acetate, nitric acid, water mixer kneader, behind the extruded moulding, 120 ℃ of oven dry, 550 ℃ of roasting 4h obtain the alumina support of siliceous, phosphorus and lithium.Nickel acetate, ammonium molybdate be dissolved in the water jointly process maceration extract; Be impregnated on the 100g carrier 120 ℃ of oven dry, 460 ℃ of roasting 4h; Obtain containing molybdenum oxide 25wt%, nickel oxide 5wt%, silica 18.1wt%, phosphorus pentoxide 3.5wt%, the catalyst S of lithia 4.0wt%-2.
Comparative Examples 3
The preparation method of silica-alumina composite granule is with Comparative Examples 2.
With silica-alumina composite granule and lithium acetate, nitric acid, water mixer kneader, behind the extruded moulding, 120 ℃ of oven dry, 550 ℃ of roasting 4h obtain siliceous and alumina support lithium.Nickel acetate, ammonium molybdate be dissolved in the water jointly process maceration extract, be impregnated on the 100g carrier, 120 ℃ of oven dry, 460 ℃ of roasting 4h obtain containing the catalyst S-3 of molybdenum oxide 25wt%, nickel oxide 5wt%, silica 19.1wt%, lithia 4.0wt%.
Comparative Examples 4
This Comparative Examples prepares the silica-alumina composite oxides according to the 1 described method of embodiment among the CN1074303C, and concrete steps are following:
Earlier in 150ml, 55 ℃ of distilled water with 30.5g sodium metasilicate (Na 2SiO 3) dissolving fully, with 152.5g sodium aluminate (NaAlO 2) also be dissolved in the 700ml distilled water.Then, sodium aluminate solution is slowly poured in the sodium silicate solution.In mixed process, mixed liquor is 55 ℃ of heating and stirrings simultaneously continuously.After two kinds of solution mixed fully, adding 6N HCl was transparent until reactant mixture.In clear solution, add 6N NaOH then and reach 10, keep 60min to obtain gel then until pH value of solution.Gel is put into reative cell keep 1h at 100 ℃ of pressure 100psi of temperature, product filters with vacuum equipment, is deposited in 100 ℃ of dry 24h and obtains the powdery alumino-silicate.
With powdery alumino-silicate and phosphoric acid, nitric acid, water mixer kneader, behind the extruded moulding, 120 ℃ of oven dry, 500 ℃ of roasting 4h use the saturated impregnated carrier of strontium nitrate solution then, 120 ℃ of oven dry, 600 ℃ of roasting 4h obtain the alumina support of siliceous, phosphorus and strontium.Nickel nitrate, ammonium molybdate be dissolved in the water jointly process maceration extract; Be impregnated on the 100g carrier; 120 ℃ of oven dry, 480 ℃ of roasting 3h obtain containing the catalyst S-4 of molybdenum oxide 28wt%, nickel oxide 7wt%, phosphorus pentoxide 1.5wt%, silica 12wt%, strontium oxide strontia 3.5wt%.
Comparative Examples 5:
This Comparative Examples prepares silica-alumina according to the 4 described methods of embodiment among the CN1306977C, and concrete steps are following:
Adopt water intaking glass 100ml, add high basicity sodium metaaluminate 75ml under the room temperature, stir 1h, leave standstill 6h, silica content is 235g/L in this solution, and alumina content is 6.7g/L.Get this solution 65ml, add water to 300ml, obtain the mother liquor of synthesis of molecular sieve, wherein SiO 2Content is 5.1g/100ml.
With concentration be 10% aluminum nitrate solution 385ml and concentration be 8% ammonia spirit 390ml and concentration be 8% ammonia spirit 390ml with and the mode of stream join simultaneously in the retort of a 2L; Put into 0.5L water in advance in jar; The flow of aluminum nitrate solution is 1.1L/h; Regulate the flow of ammonia spirit, the pH value that makes mixed liquor is 7.0 ± 0.3, and mixed liquor is collected in an ageing can.Under agitation the mother liquor with the 50ml synthesis of molecular sieve joins in this mixed liquor, processes silica-alumina colloid slurries, is warming up to 65 ℃; Stir down aging 1h, after filtering, cakes with deionized water washing 3 times; 120 ℃ of dry 5h obtain the silica-alumina composite granule in baking oven.
With silica-alumina composite granule and phosphoric acid, nitric acid, water mixer kneader, behind the extruded moulding, 120 ℃ of oven dry; 480 ℃ of roasting 4h use the saturated impregnated carrier of liquor kalii acetici then, 120 ℃ of oven dry; 680 ℃ of roasting 4h obtain the alumina support of siliceous, phosphorus and potassium.Nickel acetate, ammonium molybdate be dissolved in the water jointly process maceration extract; Be impregnated on the 100g carrier; 120 ℃ of oven dry, 460 ℃ of roasting 4h obtain containing the catalyst S-5 of molybdenum oxide 26.5wt%, nickel oxide 3.5wt%, phosphorus pentoxide 0.8wt%, silica 20.7wt%, potassium oxide 1.2wt%.
Comparative Examples 6:
The preparation method of silica-alumina composite granule is with Comparative Examples 5.
With silica-alumina composite granule and phosphoric acid, nitric acid, water mixer kneader, behind the extruded moulding, 120 ℃ of oven dry, 680 ℃ of roasting 4h obtain siliceous and alumina support phosphorus.Nickel acetate, ammonium molybdate be dissolved in the water jointly process maceration extract; Be impregnated on the 100g carrier; 120 ℃ of oven dry, 460 ℃ of roasting 4h obtain containing the catalyst S-6 of molybdenum oxide 26.5wt%, nickel oxide 3.5wt%, phosphorus pentoxide 0.8wt%, silica 21wt%.
Comparative Examples 7:
With industrial amorphous aluminum silicide and phosphoric acid, nitric acid, water mixer kneader, behind the extruded moulding, 120 ℃ of oven dry, 550 ℃ of roasting 4h obtain alumina support siliceous, phosphorus.Nickel acetate, ammonium molybdate, potassium nitrate is dissolved in the water jointly processes maceration extract; Be impregnated on the 100g carrier; 120 ℃ of oven dry; 450 ℃ of roasting 4h obtain containing molybdenum oxide 20wt%, nickel oxide 4wt%, silica 32.4wt%, phosphorus pentoxide 2.5wt%, the catalyst S of potassium oxide 1.5wt%-7.
Comparative Examples 8:
With industrial boehmite and phosphoric acid, nitric acid, water mixer kneader, behind the extruded moulding, 120 ℃ of oven dry, 480 ℃ of roasting 4h use the saturated impregnated carrier of lithium citrate solution then, 120 ℃ of oven dry, 580 ℃ of roasting 4h obtain the alumina support of siliceous, phosphorus and lithium.Nickel acetate, ammonium molybdate be dissolved in the water jointly process maceration extract, be impregnated on the 100g carrier, 120 ℃ of oven dry, 460 ℃ of roasting 3h obtain containing the catalyst S-8 of molybdenum oxide 23wt%, nickel oxide 8wt%, phosphorus pentoxide 1.5wt%, lithia 4.5wt%.
Evaluating catalyst
With drippolene one-stage hydrogenation product is raw material (feedstock property is seen table 1), and embodiment catalyst C1-C9 and Comparative Examples catalyst S 1-S8 are carried out activity rating at 100ml adiabatic reactor hydrogenation plant.Estimate 500h respectively, every 12h sample analysis bromine valency and sulfur content, average data is seen table 2.
Catalyst vulcanization: carbon disulfide is joined the sulfurized oil that is made in the cyclohexane about sulfur content 1000 μ g/g, and reactor is warmed up to 240 ℃ and begins into sulfurized oil, pressure 2.8Mpa, sulfurized oil volume space velocity 2.8h -1, hydrogen/sulfurized oil volume ratio 300: 1, the heating rate with 10 ℃/h is warmed up to 325 ℃ then, keeps 30h, and sulfuration finishes.
Evaluating catalyst condition: pressure 2.6MPa, 240 ℃ of inlet temperatures, feedstock oil volume space velocity 3.0h -1, hydrogen to oil volume ratio 280: 1.
Table 1 hydrogenating materials oil (C 6~C 8) index
Figure BDA0000074619610000151
The evaluating catalyst average data is seen table 2.
Embodiment and Comparative Examples catalyst composition and physico-chemical property are as shown in table 3.
Table 2 catalyst 500h estimates average data
Figure BDA0000074619610000161
The physico-chemical property of table 3 catalyst C1-C9 and S1-S8
Figure BDA0000074619610000162

Claims (16)

1. a Hydrobon catalyst is a carrier with siliceous aluminium oxide, it is characterized in that catalyst is an active component with molybdenum, nickel; In catalyst weight, contain molybdenum oxide 20~30wt%, nickel oxide 2~10wt%; Phosphorous oxides 0~5wt%; Alkali metal and/or alkaline earth oxide 0~5wt%, silica 2.5~31.2wt%, specific surface area of catalyst 200~300m 2/ g, pore volume 0.5~0.8ml/g; The presoma of siliceous alumina support is the boehmite that contains amorphous aluminum silicide; It is through at first preparing amorphous aluminum silicide slurries and boehmite slurries; Above-mentioned amorphous aluminum silicide slurries are mixed, wear out according to the ratio of silica content 5~40wt% with the boehmite slurries; Ageing time is 10~30min, obtains through the last handling process that comprises filtration, washing, drying then.
2. Hydrobon catalyst according to claim 1 is characterized in that containing phosphorous oxides 0.8~5wt%.
3. Hydrobon catalyst according to claim 1 is characterized in that alkali metal containing and/or alkaline earth oxide 1~5wt%.
4. according to claim 1 or 2 or 3 described Hydrobon catalysts, it is characterized in that silica content is 2.5~25wt%.
5. Hydrobon catalyst according to claim 1; The boehmite that it is characterized in that containing amorphous aluminum silicide is through with amorphous aluminum silicide slurries and boehmite slurries and stream mixes or a kind of slurries are joined in the another kind of slurries mix; After mixing completion, pH value of solution is 9.0~10.5 when aging.
6. according to claim 1 or 5 described Hydrobon catalysts, temperature is 20~65 ℃ when it is characterized in that wearing out.
7. Hydrobon catalyst according to claim 1 is characterized in that the amorphous aluminum silicide slurries obtain through following method:
(a) compound concentration is 10~150gAl 2O 3The sodium metaaluminate of/L or sodium aluminate solution join in the glue jar, are controlled to 15~50 ℃ of glue jar temperature;
(b) compound concentration is 50~200gSiO 2The silicon-containing compound solution of/L joins in the sodium aluminate solution of (a), control pH value 11.5~13;
(c) under the condition of low whipping speed greater than 250r/min, feed the carbon dioxide of concentration greater than 20v% continuously, the flow of control carbon dioxide is at 1~10Nm 3/ h, in time 20~40min, endpoint pH 7.5~9.5, neutralization finishes;
(d) in pH value 7.5~9.5, aging (c) 5~20min obtains the amorphous aluminum silicide slurries under the condition that temperature is 25~40 ℃.
8. Hydrobon catalyst according to claim 1; It is characterized in that the boehmite slurries obtain through following method: sodium metaaluminate or sodium aluminate solution are placed in the glue jar, feed carbon dioxide with intermittence or continuation mode and become glue, the aging boehmite slurries that obtain; The concentration of sodium metaaluminate or sodium aluminate solution is 20~150gAl 2O 3/ L; Gas concentration lwevel is greater than 20v%, flow 1~10Nm 3/ h; Become 20~65 ℃ of glue temperature; Become glue endpoint pH 9.0~10.5, become in the glue with time and ageing time sum less than 40min.
9. Hydrobon catalyst according to claim 1; It is characterized in that siliceous alumina support is boehmite and nitric acid, the water mixer kneader through will containing amorphous aluminum silicide; Extruded moulding, 80~140 ℃ of oven dry, 400~700 ℃ of roasting 3~6h process.
10. Hydrobon catalyst according to claim 1; It is characterized in that siliceous alumina support is with the boehmite that contains amorphous aluminum silicide and nitric acid, water mixer kneader; And add in alkali metal, alkaline-earth metal, the P elements one or more; Extruded moulding, 80~140 ℃ of oven dry, 400~700 ℃ of roasting 3~6h process.
11. the preparation method of the described Hydrobon catalyst of claim 1 is characterized in that the aqueous solution that contains molybdenum, nickel soluble-salt impregnated on the siliceous alumina support, dry back makes catalyst at 300~500 ℃ of following roasting 3~6h.
12. Hydrobon catalyst preparation method according to claim 11 is characterized in that alkali metal, alkaline-earth metal and/or P elements add when the siliceous alumina support of preparation.
13. Hydrobon catalyst preparation method according to claim 11; It is characterized in that alkali metal, alkaline-earth metal and/or P elements are added in the siliceous alumina support before adding at molybdenum, nickel in advance; Again with the aqueous solution dipping that contains molybdenum, nickel soluble-salt; Dry back makes catalyst at 300~500 ℃ of following roasting 3~6h.
14. the preparation method of the described Hydrobon catalyst of claim 1; It is characterized in that alkali metal, alkaline-earth metal and/or P elements are added to the aqueous solution that contains molybdenum, nickel soluble-salt impregnated on the siliceous alumina support; Dry back makes catalyst at 300~500 ℃ of following roasting 3~6h.
15. Hydrobon catalyst preparation method according to claim 12; It is characterized in that siliceous alumina support is through add predecessor, nitric acid, the water mixer kneader of alkali metal, alkaline-earth metal and/or P elements at the boehmite of amorphous aluminum silicide; Extruded moulding; 80~140 ℃ of oven dry, 400~700 ℃ of roasting 3~6h obtain.
16. Hydrobon catalyst preparation method according to claim 13 is characterized in that in containing the boehmite of amorphous aluminum silicide, adding nitric acid, water carries out mixer kneader, extruded moulding; 80~120 ℃ of oven dry; 300~600 ℃ of roasting 3~6h flood the soluble-salt solution of alkali metal, alkaline-earth metal and/or P elements, 80~120 ℃ of oven dry then; 400~700 ℃ of roasting 4~6h; With the aqueous solution dipping that contains molybdenum, nickel soluble-salt, dry back makes catalyst at 300~500 ℃ of following roasting 3~6h again.
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