CN104587998B - A kind of assistant for calalytic cracking and preparation method and application - Google Patents
A kind of assistant for calalytic cracking and preparation method and application Download PDFInfo
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Abstract
The invention discloses a kind of assistant for calalytic cracking and preparation method and application.The preparation method of the assistant for calalytic cracking obtains assistant for calalytic cracking including the use of active mesopore material, metal traps and clay and/or heat-resistant inorganic oxide source, wherein, the active mesopore material is made by the method comprised the following steps：It will be aged in silicon source and aqueous slkali with plastic；Filtering gained solid sediment is contacted into processing certain time with ammonium salt or acid solution, low sodium solid sediment is filtrated to get；Obtained low sodium sediment and phosphorus source contact are handled, the active mesopore material with boehmite phase structure is obtained after drying roasting, its anhydrous compound composition is calculated as (0 0.2) Na with oxide weight ratio2O·(50‑86)Al2O3·(12‑50)SiO2·(0.5‑10)P2O5.When the assistant for calalytic cracking of the present invention is used for RFCC, with stronger heavy oil cracking ability, higher lightweight oily yield and more preferable coke selectivity.
Description
Technical field
The present invention relates to a kind of assistant for calalytic cracking and preparation method and application.In particular it relates to a kind of containing active
Auxiliary agent is split in the preparation method of the assistant for calalytic cracking of mesopore material, and the catalysis being obtained by this method, and the catalytic cracking is helped
Application of the agent in RFCC.
Background technology
The constantly soaring processing cost for having increased considerably refinery of crude oil price, refinery is on the one hand by buying low price
Poor oil reduces cost；On the other hand economic well-being of workers and staff is increased by deep processing mink cell focus.Catalytic cracking is used as refinery's weight
The important means of oil processing, there is very important status in refinery, and it is not only oil plant heavy oil balance, production clean fuel
Main Means, the even more energy efficiency of oil plant focus.Therefore focus is turned to weight by increasing refinery
The deep conversion of matter oil, pursues and improves working ability, high value added product is had more, to maximizing the benefits.This means that will
Heavy crude is converted as much as possible, bottom of towe oil yield is reduced.Secondly while as far as possible by heavy oil conversion, more to pay close attention to
The yield of dry gas and coke, these products are not only worth low, and its yield often limited by device situation.Realize above-mentioned mesh
Mark, which is required to catalyst, higher heavy oil conversion performance, is typically sponsored at present by adding heavy FCC co-catalyst to strengthen
The heavy oil conversion performance of agent.
Catalyst disclosed in EP0550271A1, US5051385A, US5997729A is the preparation process in aluminium-based catalyst
Middle to add siliceous material, such as waterglass generates unformed big mesoporous aluminosilicate as the host material of auxiliary agent, with zeolites activity
Constituent element collective effect promotes the conversion of heavy oil macromolecular.
In addition, an also class is free of the heavy oil converting additive of y-type zeolite, and such as WO9712011A1 discloses one kind
Bottom of towe oil cracking additive, and in particular to two kinds of formulas.Formula one：Containing following components 1. 5-30 weight % alumino-silicate chemical combination
Thing；2. 15-30 weight % can peptized alumina；3. 5-25 weighs % non-peptized alumina；4. 30-60 weighs % clay；5. can be with
Metal traps containing less than 2 weight %.Formula two：From 3. replacing with the compound containing P unlike formula one, improve auxiliary agent
Wear resistance.The optimal preparation method of the alumino-silicate compound wherein 1. mentioned is shown in US5045519A, and the patent is used
Alcohol radical aluminium salt is raw material, expensive, substantially increases the cost of auxiliary agent.
As can be seen here, the method that prior art is try to the various co-catalysis performances that can improve auxiliary agent, although
Certain achievement is achieved, the cracking of mink cell focus is promoted to a certain extent, but the existing side for preparing assistant for calalytic cracking
Method still has the problems such as cost is high and heavy oil conversion performance has much room for improvement.
The content of the invention
The invention aims to overcome prior art assistant for calalytic cracking to exist, cost is high and heavy oil conversion performance has
There is provided assistant for calalytic cracking that a kind of heavy oil conversion performance is strong, light oil yield is high and preparation method thereof for defect to be improved.
The present invention provides a kind of preparation method of assistant for calalytic cracking, and this method comprises the following steps：（1）By silicon source and alkali
In solution and after plastic, silicon source ageing is added, solid sediment is obtained, wherein in source of aluminium, aqueous slkali and silicon source at least
One kind is containing sodium raw materials；Gained solid sediment is mixed with ammonium salt or inorganic acid, sodium oxide content is filtrated to get for 0.3 weight
Measure below % low sodium solid sediment；The low sodium solid sediment of gained is contacted with phosphorus source and activity is obtained after drying and being calcined
Mesopore material；（2）The active mesopore material, metal traps, clay and/or heat-resistant inorganic oxide source are mixed with water and beaten
Slurry, is then spray-dried, is calcined, is washed and is dried；Wherein, with P2O5The phosphorus source of meter with it is described low in terms of butt
The weight ratio of sodium solid sediment is 0.01-0.1：1.
The invention provides assistant for calalytic cracking made from preparation method provided by the present invention.
The invention provides application of the assistant for calalytic cracking provided by the present invention in RFCC.
The preparation method of the assistant for calalytic cracking provided by the present invention, catalysis of the preparation containing active mesopore material, which is split, to be helped
Agent, wherein active mesopore material is phosphorous, low sodium has structure of similar to thin diaspore, the assistant for calalytic cracking is split for heavy-oil catalytic
During change, with stronger heavy oil cracking ability, higher lightweight oily yield and more preferable coke selectivity.
Brief description of the drawings
Fig. 1 is active mesopore material AMM-1 XRD spectra；
Fig. 2 is DB-2 XRD spectra.
Embodiment
The embodiment to the present invention is described in detail below.It should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The present invention provides a kind of preparation method of assistant for calalytic cracking, and this method comprises the following steps：（1）By silicon source and alkali
In solution and after plastic, silicon source ageing is added, solid sediment is obtained, wherein in source of aluminium, aqueous slkali and silicon source at least
One kind is containing sodium raw materials；Gained solid sediment is mixed with ammonium salt or inorganic acid, sodium oxide content is filtrated to get for 0.3 weight
Measure below % low sodium solid sediment；The low sodium solid sediment of gained is contacted with phosphorus source and activity is obtained after drying and being calcined
Mesopore material；（2）The active mesopore material, metal traps, clay and/or heat-resistant inorganic oxide source are mixed with water and beaten
Slurry, is then spray-dried, is calcined, is washed and is dried；Wherein, with P2O5The phosphorus source of meter with it is described low in terms of butt
The weight ratio of sodium solid sediment is 0.01-0.1：1.
According to the present invention there is provided assistant for calalytic cracking preparation method in first prepare active mesopore material, then make
The standby assistant for calalytic cracking for adding the active mesopore material.
In the present invention, the weight in terms of butt refers to the weight after being calcined 1 hour under conditions of about 800 DEG C.
According to the present invention, step（1）Prepare the active mesopore material.Wherein, silicon source and aqueous slkali are neutralized into
The temperature of glue, preferably plastic be room temperature to 85 DEG C, the pH value of plastic is 7-11.More preferably the temperature of plastic is 20-80 DEG C.
Step（1）In, silicon source is with aqueous slkali and after plastic, adding silicon source ageing.Add the amount of silicon source, preferably described silicon
Source is with source of aluminium respectively with SiO2And Al2O3The weight ratio of meter is 1：1.5-7.5.More preferably described silicon source and source of aluminium point
Not with SiO2And Al2O3The weight ratio of meter is 1：1.5-3.2.The condition being aged, the temperature being preferably aged is room temperature to 90
DEG C, the time of ageing is 1-5 hours.The temperature being more preferably aged is 20-85 DEG C.
Step（1）In, at least a kind of in source of aluminium, aqueous slkali and silicon source is the obtained solid precipitation containing sodium raw materials
Thing contains sodium.Solid sediment is mixed with ammonium salt or inorganic acid, filters to obtain low sodium solid sediment.Solid can be precipitated
Thing is mixed with ammonium salt, can take processing procedure well-known to those skilled in the art, for example, solid sediment is pressed into sediment
（Butt）：Ammonium salt：H2O=1：0.1-1：5-30 weight is than mixing to swap, and the temperature of preferably described mixing is room temperature
To 100 DEG C, exchange 1-3 times, exchange 0.5-1 hours every time, until sodium content is less than 0.3 weight in terms of sodium oxide molybdena in solid sediment
Measure %.Preferable case, the ammonium salt is at least one of ammonium chloride, ammonium sulfate, ammonium nitrate, ammonium carbonate and ammonium hydrogen carbonate.
Step（1）In, solid sediment can also be mixed with inorganic acid, can taken well known to those skilled in the art
Processing procedure, for example by solid sediment press sediment（Butt）：Acid：H2O=1：0.03-0.30：5-30 weight is than mixed
Close to swap, preferably 1：0.05-0.2：6-20, is still more preferably 1：0.07-0.16：8-15；It is preferred that described mixed
The temperature of conjunction be room temperature to 100 DEG C, exchange once, at least exchange 0.2 hour, until solid sediment in sodium content with sodium oxide molybdena
Meter is less than 0.3 weight %.Preferably, the temperature of the mixing is 30-80 DEG C, preferably 40-70 DEG C；The time of exchange is 0.2-2
Hour, preferably 0.3-1.5 hours, more preferably 0.5-1 hours.Under preferable case, the inorganic acid be selected from sulfuric acid, hydrochloric acid and
At least one of nitric acid.
Step（1）In, low sodium solid sediment is contacted with phosphorus source and active mesopore material is obtained after drying and being calcined, its
In preferably phosphorus source be at least one of ammonium phosphate, diammonium hydrogen phosphate, ammonium dihydrogen phosphate and phosphoric acid.
Step（1）Described in contact can have a various ways, a kind of preferred embodiment is that the contact is by the phosphorus
Ground with the low sodium solid sediment in source.Another preferred embodiment includes for the contact：The low sodium solid is sunk
Starch is mixed to form slurries with water, and the low sodium solid sediment counts the weight ratio with water as 1 using butt：5-20, then will be described
Phosphorus source adds the slurries, and the condition of the contact includes：Temperature be room temperature to 90 DEG C, the time is 0.2-5 hours.The drying
Water or volatile materials can be removed with roasting, and the P elements for being conducive to phosphorus source to provide deposit or migrated the work in formation
In the outer surface or duct of property mesopore material, the active mesopore material is obtained.
Step（1）In, source of aluminium can be conventional use of various silicon sources, example in the preparation technology of active mesopore material
Such as can be selected from least one of aluminum nitrate, aluminum sulfate and aluminium chloride.
In the present invention, the aqueous slkali can be various conventional aqueous slkalis, for example can be molten for ammoniacal liquor, potassium hydroxide
At least one of liquid, sodium aluminate solution and sodium hydroxide solution.
In the present invention, the silicon source can be conventional use of various sial, example in the preparation technology of active mesopore material
Can be such as at least one of silica gel, waterglass, sodium metasilicate, silicon tetraethyl, silica, Ludox and Silica hydrogel.
According to the present invention, although source of aluminium, silicon source and aqueous slkali can each be fitted from the above-mentioned material enumerated
Locality selection, however, at least a kind of generally in source of aluminium, aqueous slkali and silicon source is the raw material containing sodium, so as to ensure such as
This active mesopore material prepared has the central hole structure of appropriate size.According to a kind of preferred embodiment party of the present invention
Formula, source of aluminium is selected from least one of aluminum nitrate, aluminum sulfate and aluminium chloride, and the alkali is selected from ammoniacal liquor, potassium hydroxide, hydrogen-oxygen
Change at least one of sodium and sodium metaaluminate, the silicon source in waterglass, sodium metasilicate, silicon tetraethyl and silica at least
It is a kind of.
In the present invention, the material containing sodium referred to containing sodium raw materials in silicon source, alkali and silicon source.
According to the present invention, the preparation method step of the assistant for calalytic cracking provided by the present invention（1）In above-mentioned preparation
Condition, can obtain active mesopore material.Under preferable case, anhydrous chemical of the active mesopore material in terms of oxide weight
Expression formula is：(0-0.2)Na2O·(50-86)Al2O3·(12-50)SiO2·(0.5-10)P2O5。
According to the present invention, the preparation method step provided by the present invention（1）Preparation condition, under preferable case,
The active mesopore material has boehmite phase structure, and its XRD spectra is as shown in Figure 1.
According to the present invention, the preparation method step provided by the present invention（1）Preparation condition, under preferable case,
The surface area of the active mesopore material is 200-600m2/ g, pore volume is 0.3-1.8cm3/ g, average pore size is 8-18nm；It is preferred that
Ground, the surface area of the active mesopore material is 250-550m2/ g, pore volume is 0.6-1.6cm3/ g, average pore size is 8-15nm.
In the assistant for calalytic cracking of the present invention, the active mesopore material prepared using the active mesopore material
In sodium content in terms of sodium oxide molybdena be more preferably below 0.2 weight %.
A kind of embodiment of active mesopore material of the present invention includes：By silicon source and aqueous slkali in room temperature at 85 DEG C
Plastic is neutralized, it is 7-11 to control plastic pH value；According to SiO2：Al2O3=1：1.5-7.5 weight is than adding silicon source, in room temperature extremely
It is aged 1-5 hours at 90 DEG C, obtains solid sediment；By gained solid sediment contacted with ammonium salt or acid solution processing it is certain when
Between, it is filtrated to get the low sodium solid sediment that sodium oxide content is less than 0.3 weight %；By the low sodium solid sediment of gained and phosphorus source
According to phosphorus source（With P2O5Meter）：Low sodium solid sediment butt=0.01-0.1：1 weight is handled than contact, and in 100 DEG C -150
Dry 10-20 hours, or be calcined 1-4 hours at 500 DEG C -700 DEG C at DEG C, obtain the active mesopore material.
According to the present invention, step（2）For by step（1）Prepared by the active mesopore material prepared to form catalytic cracking and helps
Agent.Step（2）It is referred to prior art progress.
The present invention preparation method in, can in pulping process in the form of an ion, complex form introduce metal traps
Into the slurries containing heat-resistant inorganic oxide, heat-resistant inorganic oxide precursor or clay, or it is directly added into metal traps
Grain, either by coprecipitation metal traps are deposited in the clay or the heat-resistant inorganic oxide in advance or
Metal traps are introduced in the rear washing process of the assistant for calalytic cracking.Metal is introduced by foregoing various modes to trap
Agent, makes final metal traps be free on outside the active mesopore material, and those skilled in the art equal can know to this.
According to the present invention, step（2）The addition of middle each component is referred to prior art progress, and the present invention is to this without spy
It is different to require, under preferable case, step（2）Described in active mesopore material, metal traps, clay and/or heat resistant inorganic oxidation
The addition of material resource causes in obtained assistant for calalytic cracking, based on butt, the active mesopore material, metal traps with it is viscous
The weight ratio of soil and/or heat-resistant inorganic oxide is 1:0.001-5:0.1-100, preferably 1:0.01-2:0.1-40, more preferably
For 1:0.02-1.5:0.1-10.
The present invention, without particular/special requirement, can be metal traps commonly used in the art to the species of the metal traps,
Wherein, the preferably precursor of rare earth oxide and/or the rare earth oxide.The precursor of the rare earth oxide can be in step
（3）The roasting under conditions of be changed into the material of the rare earth oxide.The precursor of the rare earth oxide is preferably chlorination
One or more in rare earth, carbonated rare earth and rare earth hydrate.Wherein, rare earth element can be lanthanum, cerium, praseodymium, neodymium, promethium, samarium
With the one or more in europium.It is preferred that, the metal traps are free on outside active mesopore material.The metal traps
Consumption is changed into corresponding metal oxide to calculate with the metal traps.For example can according to rare earth oxide oxide
Form Re2O3Meter.
In the present invention, in assistant for calalytic cracking made from the preparation method that the present invention is provided, clay and/or heat resistant inorganic oxygen
Compound refers to the mixture of clay, heat-resistant inorganic oxide or clay and heat-resistant inorganic oxide；I.e. in the present invention, clay
And/or the weight of heat-resistant inorganic oxide refers to the gross weight of clay and heat-resistant inorganic oxide, if for example, catalytic cracking
When only containing clay in auxiliary agent, then the weight of clay and/or heat-resistant inorganic oxide refers to the weight of clay, if catalysis is split
When changing in auxiliary agent only containing heat-resistant inorganic oxide, then the weight of clay and/or heat-resistant inorganic oxide refers to heat resistant inorganic
The weight of oxide, if contain heat-resistant inorganic oxide and clay simultaneously in assistant for calalytic cracking, clay and/or heat-resisting
The weight of inorganic oxide refers to heat-resistant inorganic oxide and the gross weight both clay.
According to the present invention, the present invention, without particular/special requirement, can be clay commonly used in the art to the species of the clay, excellent
, can be selected from kaolin, sepiolite, attapulgite, montmorillonite, tired de- stone, diatomite, galapectite, saponite, boron profit in the case of choosing
One or more in soil and hydrotalcite；More preferably it is selected from kaolin, diatomite, sepiolite, attapulgite, montmorillonite and tires out
One or more in de- stone.
According to the present invention, the heat-resistant inorganic oxide source is for heat-resistant inorganic oxide and/or in step（2）The roasting
The heat-resistant inorganic oxide precursor of heat-resistant inorganic oxide can be changed under conditions of burning.
In the present invention, the heat-resistant inorganic oxide precursor can be heat-resistant inorganic oxide precursor commonly used in the art,
Such as can be Ludox, Alumina gel, this is no longer going to repeat them.
According to the present invention, the present invention, without particular/special requirement, can be that this area is normal to the species of the heat-resistant inorganic oxide
In heat-resistant inorganic oxide, preferably aluminum oxide, silica, titanium oxide, magnesia, zirconium oxide, thorium oxide and beryllium oxide
One or more.
The methods described provided according to the present invention, in step（2）In, by active mesopore material, metal traps, clay
And/or heat-resistant inorganic oxide source mixes mashing, and follow-up spray drying, roasting, washing and dry, these processes with water
Implementation can be implemented using conventional method, their specific implementation method for example patent application CN1098130A,
There is detailed description in CN1362472A, CN1727442A, CN1132898C and CN1727445A, be incorporated by reference herein
Quote.
In the present invention, the spray drying, roasting, washing and drying are prior art, be will not be repeated here.The spray
Mist is dried, is calcined, there is no particular limitation for washing and dry order, as long as the assistant for calalytic cracking that the present invention can be made is
Can.It is preferred that the spray drying, roasting, washing can be carried out successively and dried.
Present invention also offers assistant for calalytic cracking made from preparation method provided by the present invention.
The invention provides application of the assistant for calalytic cracking provided by the present invention in RFCC.
The application method for the assistant for calalytic cracking that the present invention is provided is referred to prior art progress, for example, can be：Will
The assistant for calalytic cracking can also be individually added into catalytic cracking dress with adding catalytic cracking unit after major catalyst physical mixed
Put, then mixed in device with major catalyst.The weight ratio of assistant for calalytic cracking and major catalyst is referred to prior art
Carry out, preferably 1:2-25, more preferably 1:4-20.
When the assistant for calalytic cracking of the present invention is used for RFCC, with stronger heavy oil cracking ability, higher
Liquid product yield and relatively low coking yield.For example when the auxiliary agent and major catalyst that the present invention is provided are 12 by weight:88
During mixing, when Ni contents, V content are 3000ppm, compared with major catalyst, heavy oil is reduced to 7.73 weights by 10.64 weight %
Measure %, total fluid product yield（Liquefied gas+gasoline+diesel oil）83.61%, coke selectivity are increased to by 79.57%（Coke yield
×（100- conversion ratios）/ conversion ratio）2.3322% is down to by 3.2362%.It can be seen that, the assistant for calalytic cracking that the present invention is provided can be more
Effectively convert heavy oils into high-value product.
Compared with prior art, the assistant for calalytic cracking good hydrothermal stability that the present invention is provided, is conducive to heavy oil macromolecular
Efficient Conversion is into value product.
The following examples will be further described to the present invention, but not thereby limiting the invention.
In embodiment and in comparative example：
Alumina gel is provided by sinopec catalyst asphalt in Shenli Refinery（Al2O3Content is 21.5 weight %）, kaolin is by China
Suzhou is provided（Solid content is 80 weight %）, boehmite provides by Shandong Aluminum Plant（Solid content is 65.8 weight %）.Industry is urged
Agent C1（Trade mark MLC-500）There is provided by Sinopec catalyst asphalt in Shenli Refinery, chemistry examination used in comparative example and embodiment
What agent was not indicated especially, its specification is pure for chemistry.
In embodiments, Na in active mesopore material product2O、Al2O3、SiO2Content determined with x-ray fluorescence method
（Referring to《Petrochemical Engineering Analysis method（RIPP experimental methods）》, Yang Cui surely compile by grade, and Science Press, nineteen ninety publishes）.
Specific surface area, pore volume, the average pore size of active mesopore material are determined by nitrogen absorption under low temperature-desorption method.
Preparation example 1-7 is used for the preparation method for illustrating active mesopore material.
Preparation example 1
（1）Solid sediment processed.It is 90g Al by concentration2O3/ L Al2(SO4)3Solution and concentration are 102g Al2O3/L、
The NaAlO of Crater corrosion 2.52Solution is reaction raw materials, and cocurrent plastic simultaneously adjusts plastic pH=9.5, and the temperature of plastic is 50 DEG C, is obtained
To plastic slurries；It is 60gSiO to add concentration with vigorous stirring2/ L waterglass, 2 are aged in the case where the temperature of ageing is 70 DEG C
Hour, obtain solid sediment.
（2）Make low sodium solid sediment.Use NH4Cl solution presses solid sediment（Butt）：Ammonium salt：H2O weight ratio=1：
0.8：15, ion exchange removing sodium ion is carried out to solid sediment at 60 DEG C, exchange repeats twice, carried out every time
0.5 hour, obtain the low sodium solid sediment that sodium oxide content is less than 0.2 weight %.
（3）P Modification.Low sodium solid sediment is mixed into mashing with water, and adds diammonium hydrogen phosphate, by obtained mixing
Slurries react 1 hour at 70 DEG C, and filtering washing obtains active mesopore material AMM-1 after being dried 10 hours at 120 DEG C.
Wherein, low sodium solid sediment（Butt）：H2O weight ratio=1：8；Diammonium hydrogen phosphate（With P2O5Meter）：Low sodium solid sediment
（Butt）Weight ratio=0.022：1.
AMM-1 XRD spectra is as shown in figure 1, with boehmite phase structure.
AMM-1 chemical composition and pore structure analysis result is shown in Table 1.
Preparation example 2
According to the method for preparation example 1, unlike, step（3）It is middle to use " diammonium hydrogen phosphate（With P2O5Meter）：Low sodium solid sinks
Starch（Butt）Weight ratio=0.06：1 " and " at 60 DEG C react 2 hours ", substitute " diammonium hydrogen phosphate（With P2O5Meter）：Low sodium
Solid sediment（Butt）Weight ratio=0.022：1 " and " at 70 DEG C react 1 hour ", obtain active mesopore material AMM-2.
AMM-2 has the feature of XRD spectra in Fig. 1, with boehmite phase structure.
AMM-2 chemical composition and pore structure analysis result is shown in Table 1.
Preparation example 3
According to the method for preparation example 1, unlike, step（3）It is middle to use " diammonium hydrogen phosphate（With P2O5Meter）：Low sodium solid sinks
Starch（Butt）Weight ratio=0.095：1 " and " at 70 DEG C react 2 hours " replacement " diammonium hydrogen phosphate（With P2O5Meter）：Low sodium
Solid sediment（Butt）Weight ratio=0.022：1 " and " at 70 DEG C react 1 hour ", obtain active mesopore material AMM-3.
AMM-3 has the feature of XRD spectra in Fig. 1, with boehmite phase structure.
AMM-3 chemical composition and pore structure analysis result is shown in Table 1.
Preparation example 4
（1）Solid sediment processed.It is 90g Al by concentration2O3/ L Al2(SO4)3Solution and concentration are 102g Al2O3/L、
The NaAlO of Crater corrosion 1.72Solution is reaction raw materials, and cocurrent plastic simultaneously adjusts plastic pH=10.5, and the temperature of plastic is 50 DEG C,
Obtain plastic slurries；It is 60g SiO to add concentration with vigorous stirring2/ L waterglass, it is old in the case where the temperature of ageing is 60 DEG C
Change 3 hours, obtain solid sediment.
（2）Make low sodium solid sediment.By solid sediment（Butt）：HCl：H2O weight ratio=1：0.1：10,60
Solid sediment is swapped 30 minutes at DEG C, low sodium solid precipitation of the sodium oxide content less than 0.2 weight % is washed to obtain in filtering
Thing.
（3）P Modification.Low sodium solid sediment is mixed into mashing with water, and adds phosphoric acid, by obtained mixed serum again
In being reacted 1 hour at 60 DEG C, filtering washing obtains active mesopore material AMM-4 after being dried 10 hours at 120 DEG C.Wherein, it is low
Sodium solid sediment（Butt）：H2O weight ratio=1：10；Phosphoric acid（With P2O5Meter）：Low sodium solid sediment（Butt）Weight
Than=0.015：1.
AMM-4 has the feature of XRD spectra in Fig. 1, with boehmite phase structure.
AMM-4 chemical composition and pore structure analysis result is shown in Table 1.
Preparation example 5
According to the method for preparation example 4, unlike, step（3）It is middle to use " phosphoric acid（With P2O5Meter）：Low sodium solid sediment
（Butt）Weight ratio=0.052：1 " and " at 70 DEG C react 2 hours " replacement " phosphoric acid（With P2O5Meter）：Low sodium solid sediment
（Butt）Weight ratio=0.015：1 " and " at 60 DEG C react 1 hour "；And be calcined obtained drying sample at 450 DEG C
After 2 hours, active mesopore material AMM-5 is obtained.
AMM-5 has the feature of XRD spectra in Fig. 1, with boehmite phase structure.
AMM-5 chemical composition and pore structure analysis result is shown in Table 1.
Preparation example 6
（1）Solid sediment processed.It is 90g Al by concentration2O3/ L Al2(SO4)3Solution and ammoniacal liquor cocurrent plastic, control volume
Glue pH=10.5 is tied to form, the temperature of plastic is 40 DEG C；It is 60g SiO to add concentration with vigorous stirring2/ L waterglass, old
The temperature of change obtains solid sediment to be aged 3 hours at 50 DEG C.
（2）Make low sodium solid sediment.By solid sediment（Butt）：NH4Cl：H2O weight ratio=1：0.1：10,
Solid sediment is swapped 30 minutes at 60 DEG C, filtering wash sodium oxide content less than 0.2 weight % low sodium solid sink
Starch.
（3）P Modification.Low sodium solid sediment is directly mixed with phosphoric acid, the mixture after grinding is uniform is dry in 120 DEG C
Dry 10 hours, obtain active mesopore material AMM-6.Wherein, phosphoric acid（With P2O5Meter）：Low sodium solid sediment（Butt）Weight ratio
=0.016：1.
AMM-6 has the feature of XRD spectra in Fig. 1, with boehmite phase structure.
AMM-6 chemical composition and pore structure analysis result is shown in Table 1.
Preparation example 7
According to the method for preparation example 6, unlike, step（3）It is middle to use " phosphoric acid（With P2O5Meter）：Low sodium solid sediment
（Butt）Weight ratio=0.03：1 " substitutes " phosphoric acid（With P2O5Meter）：Low sodium solid sediment（Butt）Weight ratio=
0.016：1”；And after obtained drying sample is calcined 4 hours at 550 DEG C, obtain active mesopore material AMM-7.
AMM-7 has the feature of XRD spectra in Fig. 1, with boehmite phase structure.
AMM-7 chemical composition and pore structure analysis result is shown in Table 1.
Prepare comparative example 1
This comparative example illustrates the preparation of the mesopore material for contrast.
（1）Solid sediment processed.Using concentration as 90g Al2O3/ L Al2(SO4)3Solution and concentration are 102g Al2O3/L、
The NaAlO of Crater corrosion 2.52Solution is reaction raw materials, and cocurrent plastic simultaneously adjusts plastic pH=9.0, and the temperature of plastic is 50 DEG C, is obtained
To plastic slurries；It is 60gSiO to add concentration with vigorous stirring2/ L waterglass, 2 are aged in the case where the temperature of ageing is 70 DEG C
Hour, obtain sial sediment.
（2）Make low sodium sial sediment.Use NH4Cl solution presses sial sediment（Butt）：Ammonium salt：H2O weight ratio=1：
0.8：15, ion exchange removing sodium ion is carried out to sial sediment at 60 DEG C, exchange repeats twice, carried out every time
0.5 hour, the low sodium sial sediment that sodium oxide content is less than 0.2 weight % is obtained, is dried 10 hours at 120 DEG C, obtains mesopore
Silica-alumina material DB-1.
DB-1 has the feature of XRD spectra in Fig. 1, with boehmite phase structure.
DB-1 chemical composition and pore structure analysis result is shown in Table 1.
Prepare comparative example 2
This comparative example illustrates the preparation of the mesopore material for contrast.
According to boehmite：The weight ratio of water is 1：15, industrial boehmite is mixed into mashing with water, 30 points are stirred
The watery hydrochloric acid of metering is added after clock, continues to stir 10 minutes, adds tetraethoxy-silicane, 80 DEG C is warming up to and reacts 4 hours, add
Phosphoric acid, continues to stir 1 hour, is then dried 10 hours at 120 DEG C, roasting obtains comparative sample in 4 hours at 550 DEG C
DB-2。
DB-2 XRD spectra is as shown in Fig. 2 have boehmite phase structure, but crystallinity is higher.
DB-2 chemical composition and pore structure analysis result is shown in Table 1.
Table 1
Embodiment 1-7 is used for the preparation method for illustrating the assistant for calalytic cracking that the present invention is provided.
Embodiment 1
Boehmite and kaolin are mixed into mashing according to a certain percentage, mixed chlorinated rare earth is added（Wherein oxide
With RE2O3The content of meter>98 weight %, CeO2With La2O3Mass ratio be 1.66）The aqueous solution（The mixed chlorinated rare earth aqueous solution it is dense
Spend for 300g/L, following examples are identical）, and add hydrochloric acid and make slurries pH=3.0, active mesopore material AMM-1 is then added,
It is uniformly dispersed and obtains slurries（Solid content is 35 weight %）, it is calcined 2 hours at 400 DEG C after spray drying forming.Take 100 grams of roastings
Product after burning puts into 1 liter of aqueous ammonium chloride solution washing（The amount of ammonium chloride is 2 weight % of catalyst butt）, it is dry to be made into
Product auxiliary agent A 1.Specific feed intake is shown in Table 2, and wherein the inventory of rare earth chloride is in terms of rare earth oxide.
Embodiment 2
AMM-2, Alumina gel and kaolin are mixed into mashing according to a certain percentage, mixed rare earth carbonate is added（Wherein aoxidize
Thing is with RE2O3The content of meter>98 mass %, CeO2With La2O3Mass ratio be 1.52）Solid, adding a certain amount of hydrochloric acid makes slurries
PH=3.0, are uniformly dispersed and obtain slurries（Solid content is 35 weight %）, spray shaping, 400 DEG C, roasting in 2 hours.Take 100 grams of catalysis
Agent puts into 1 liter of aqueous ammonium chloride solution washing（Ammonium chloride amount is 2 weight % of catalyst butt）, dry finished product auxiliary agent A 2.Tool
Body, which feeds intake, is shown in Table 2.
Embodiment 3
Ammoniacal liquor is slowly dropped into the mixed chlorinated rare earth aqueous solution first, RE (OH) is filtrated to get3（Wherein oxide with
RE2O3The content of meter>98 mass %, CeO2With La2O3Mass ratio be 1.66）, it is standby.By AMM-3, boehmite, Alumina gel
Mix mashing according to a certain percentage with kaolin, adding a certain amount of hydrochloric acid makes slurries pH=3.0, is eventually adding RE prepared above
(OH)3, it is uniformly dispersed and obtains slurries（Solid content is 35 weight %）, spray shaping.It is calcined for 400 DEG C, 2 hours, takes 100 grams of catalysis
Agent puts into 1 liter of aqueous ammonium chloride solution washing（Ammonium chloride amount is 2 weight % of catalyst butt）, dry finished product auxiliary agent A 3.Tool
Body, which feeds intake, is shown in Table 2.
Embodiment 4
Boehmite, Alumina gel and kaolin are mixed into mashing according to a certain percentage, LaCl is added3The aqueous solution（Concentration
For 300g/L）, adding a certain amount of hydrochloric acid makes slurries pH=3.0, adds AMM-4, being uniformly dispersed obtains slurries（Solid content is 35
Weight %）, spray shaping.It is calcined for 400 DEG C, 2 hours, takes 100 grams of catalyst to put into 1 liter of aqueous ammonium chloride solution washing（Ammonium chloride amount
For 2 weight % of catalyst butt）, dry finished product auxiliary agent A 4.Specific feed intake is shown in Table 2.
Embodiment 5
AMM-5, Ludox and kaolin are mixed into mashing according to a certain percentage, add a certain amount of hydrochloric acid make slurries pH=
3.0, it is uniformly dispersed and obtains slurries（Solid content is 35 weight %）, spray shaping.It is calcined for 400 DEG C, 2 hours, takes 100 grams of catalyst
1 liter of aqueous ammonium chloride solution washing of input（Ammonium chloride amount is 2 weight % of catalyst butt）, then washed with rare earth chloride solution
Auxiliary agent, dries finished product auxiliary agent A 5.Specific feed intake is shown in Table 2.
Embodiment 6
Boehmite and Alumina gel are mixed into mashing according to a certain percentage, mixing RECl is added3Rare earth（Wherein oxide
With RE2O3The content of meter>98 weight %, CeO2With La2O3Mass ratio be 1.66）The aqueous solution（Concentration is 300g/L）, add certain
Amount hydrochloric acid makes slurries pH=3.0, adds AMM-6, being uniformly dispersed obtains slurries（Solid content is 35 weight %）, spray shaping, 400
DEG C roasting is calcined for 2 hours, takes 100 grams of catalyst to put into 1 liter of ammonium chloride solutions washing（Ammonium chloride amount is 2 weights of catalyst butt
Measure %）, drying finished product auxiliary agent A 6 is made.Specific feed intake is shown in Table 2.
Embodiment 7
AMM-7 and kaolin are mixed into mashing according to a certain percentage, is uniformly dispersed and obtains slurries（Solid content is 35 weights
Measure %）, spray shaping.It is calcined for 400 DEG C, 2 hours, takes 100 grams of catalyst to put into 1 liter of aqueous ammonium chloride solution washing（Ammonium chloride amount is
2 weight % of catalyst butt）, then with lanthanum chloride solution elution auxiliary agent, dry finished product auxiliary agent A 7.Specific feed intake is shown in Table
2。
Comparative example 1
Contrast auxiliary agent B 1 is prepared as described in Example 6, the difference is that substituting AMM-6 with DB-1.Specific feed intake is shown in Table 2.
Comparative example 2
Contrast auxiliary agent B 2 is prepared as described in Example 4, the difference is that substituting AMM-4 with DB-2.Specific feed intake is shown in Table 2.
Comparative example 3
Contrast auxiliary agent B 3 is prepared as described in Example 3, the difference is that being added without RE (OH)3.Specific feed intake is shown in Table 2.
Test case 1
For illustrating application of the catalytic cracking catalyst of the invention provided in RFCC.
Auxiliary agent A 1, A2, A5, A7 and industrial catalyst C1 that Example 1, embodiment 2, embodiment 5, embodiment 7 are provided
（Trade mark MLC-500, Sinopec asphalt in Shenli Refinery）By constant weight physical mixed（It is shown in Table 4）, by catalyst C1 and auxiliary agent A 1,
The mixed catalyst of A2, A5, A7 cyclic polluting on circulation aging equipment, deposits Ni, V, then 800 DEG C, 100% vapor
Aging 8 hours, investigates the catalytic performance of aging rear catalyst on ACE devices.Ni, V theoretical content are thrown by pollution on catalyst
Doses is calculated, and the results are shown in Table 4.Raw materials used oil nature is shown in Table 3, appreciation condition and the results are shown in Table 4.
Test case 2
Method according to test case 1 is tested, the difference is that catalyst is industrial catalyst C1, Ni, V contain on catalyst
Amount, appreciation condition and it the results are shown in Table 5.
Table 3
| Density（20℃）, gram per centimeter3 | 0.9044 |
| Viscosity, millimeter2/ the second | 1.5217(20℃) |
| 100℃ | 9.96 |
| Freezing point, DEG C | 40 |
| Carbon residue, weight % | 3.0 |
| Element is constituted, weight % | |
| C | 85.98 |
| H | 12.86 |
| S | 0.55 |
| N | 0.18 |
| Boiling range, DEG C | |
| Initial boiling point | 243 |
| 5% | 294 |
| 10% | 316 |
| 30% | 395 |
| 50% | 429 |
| 70% | 473 |
| 90% | - |
Table 4
Conversion ratio=（C5+ gasoline）Yield+yield of liquefied gas+（H2-C2）Yield+coking yield
Dry gas conversion ratio=（（H2-C2）Yield/conversion ratio）×100%
The auxiliary agent that the present invention is provided it can be seen from the data of table 4 has more preferable heavy oil conversion performance and anti-metal dirty
Dye ability.
Test case 3
Method according to test case 1 is tested, the difference is that catalyst is embodiment 3, embodiment 4, embodiment 6 are provided
Auxiliary agent A 3, A4, A6 and industrial catalyst C1 by weight the catalyst after physical mixed, Ni, V content, evaluation on catalyst
Condition and it the results are shown in Table 5.
Test comparison example 1
Method according to test case 1 is tested, the difference is that catalyst is comparative example 1, comparative example 2, comparative example 3 are provided
Auxiliary agent B 1, B2, B3 and industrial catalyst C1 by weight the catalyst after physical mixed, Ni, V content, evaluation on catalyst
Condition and it the results are shown in Table.
Table 5
Conversion ratio=（C5+ gasoline）Yield+yield of liquefied gas+（H2-C2）Yield+coking yield
Dry gas conversion ratio=（（H2-C2）Yield/conversion ratio）×100%
In terms of the evaluation result of table 5, the auxiliary agent that provides of the present invention, can be with after addition vanadium trapping agent compared with contrasting auxiliary agent
Strengthen anti-metallic contamination ability, can more effectively convert heavy oils into high-value product.
Claims (21)
1. a kind of preparation method of assistant for calalytic cracking, this method comprises the following steps：
(1) silicon source ageing in silicon source and aqueous slkali and after plastic, will be added, obtains solid sediment, wherein source of aluminium, alkali soluble
At least a kind of in liquid and silicon source is containing sodium raw materials；Gained solid sediment is mixed with ammonium salt or inorganic acid, oxygen is filtrated to get
Change the low sodium solid sediment that sodium content is below 0.3 weight %；The low sodium solid sediment of gained is contacted and dried with phosphorus source
With active mesopore material is obtained after roasting；
(2) the active mesopore material, metal traps, clay and/or heat-resistant inorganic oxide source are mixed into mashing with water, so
It is spray-dried, be calcined, washed and is dried afterwards；
Wherein, with P2O5The weight ratio of the phosphorus source of meter and the low sodium solid sediment counted using butt is 0.01-0.1：1,
Anhydrous chemical expression of the active mesopore material in terms of oxide weight be：(0-0.2)Na2O·(50-86)Al2O3·
(12-50)SiO2·(0.5-10)P2O5。
2. preparation method according to claim 1, wherein, active mesopore material is with oxide weight described in step (1)
The anhydrous chemical expression of meter is：(0.08-0.12)Na2O·(50.2-84)Al2O3·(12.3-48)SiO2·(1.5-9.3)
P2O5。
3. preparation method according to claim 1, wherein, there is the active mesopore material boehmite thing mutually to tie
Structure, anhydrous chemical expression of the active mesopore material in terms of oxide weight be：0.08Na2O·67.3Al2O3·
27.3SiO2·5.1P2O5, or 0.11Na2O·55.4Al2O3·41.2SiO2·2.9P2O5。
4. preparation method according to claim 1 or 2, wherein, the surface area of the active mesopore material is 200-600m2/
G, pore volume is 0.3-1.8cm3/ g, average pore size is 8-18nm.
5. preparation method according to claim 4, wherein, the surface area of the active mesopore material is 250-550m2/ g,
Pore volume is 0.6-1.6cm3/ g, average pore size is 8-15nm.
6. preparation method according to claim 1, wherein, in step (1), phosphorus source is ammonium phosphate, phosphoric acid hydrogen two
At least one of ammonium, ammonium dihydrogen phosphate and phosphoric acid.
7. the preparation method according to claim 1 or 6, wherein, in step (1), the contact be by phosphorus source with
The low sodium solid sediment grinding.
8. preparation method according to claim 1, wherein, in step (1), the contact includes：The low sodium is consolidated
Body sediment is mixed to form slurries with water, and the low sodium solid sediment counts the weight ratio with water as 1 using butt：5-20, then will
Phosphorus source adds the slurries, and the condition of the contact includes：Temperature be room temperature to 90 DEG C, the time is 0.2-5 hours.
9. preparation method according to claim 1, wherein, in step (1), the condition of the drying includes：Temperature is
100-150 DEG C, the time is 10-20 hours, and the condition of the roasting includes：Temperature is 500-700 DEG C, and the time is 1-4 hours.
10. the preparation method according to claim 1 or 9, wherein, in step (1) temperature of plastic be room temperature to 85 DEG C,
The pH value of plastic is 7-11；The silicon source is with source of aluminium respectively with SiO2And Al2O3The weight ratio of meter is 1：1.5-7.5, ageing
Temperature be room temperature to 90 DEG C, the time of ageing is 1-5 hours；The temperature of the mixing is room temperature to 100 DEG C.
11. the preparation method according to any one in claim 1-10, wherein, source of aluminium is selected from aluminum nitrate, sulfuric acid
At least one of aluminium and aluminium chloride, the alkali in ammoniacal liquor, potassium hydroxide, sodium hydroxide and sodium metaaluminate at least one
Kind, the silicon source is selected from least one of waterglass, sodium metasilicate, silicon tetraethyl and silica.
12. preparation method according to claim 1, wherein, the ammonium salt is ammonium chloride, ammonium sulfate, ammonium nitrate, ammonium carbonate
At least one of with ammonium hydrogen carbonate.
13. preparation method according to claim 1, wherein, the inorganic acid in sulfuric acid, hydrochloric acid and nitric acid at least
It is a kind of.
14. preparation method according to claim 1, wherein, active mesopore material described in step (2), metal traps,
The addition in clay and/or heat-resistant inorganic oxide source causes in obtained assistant for calalytic cracking, based on butt, in the activity
The weight ratio of Porous materials, metal traps and clay and/or heat-resistant inorganic oxide is 1:0.001-5:0.1-100.
15. the preparation method according to claim 1 or 14, wherein, the metal traps are rare earth oxide and/or described
The precursor of rare earth oxide.
16. preparation method according to claim 15, wherein, the precursor of the rare earth oxide is rare earth chloride, carbonic acid
One or more in rare earth and rare earth hydrate.
17. preparation method according to claim 1, wherein, the heat-resistant inorganic oxide source is heat-resistant inorganic oxide
And/or the heat-resistant inorganic oxide precursor of heat-resistant inorganic oxide can be changed under conditions of the roasting of step (2).
18. preparation method according to claim 17, wherein, the heat-resistant inorganic oxide is aluminum oxide, silica, oxygen
Change at least one of titanium, magnesia, zirconium oxide, thorium oxide and beryllium oxide.
19. preparation method according to claim 1, wherein, the clay is selected from kaolin, diatomite, sepiolite, bumps
At least one of rod stone, montmorillonite and tired de- stone.
20. the assistant for calalytic cracking as made from the preparation method described in any one in claim 1-19.
21. application of the assistant for calalytic cracking described in claim 20 in RFCC.
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