CN107971024A - The preparation method of fluid catalyst - Google Patents
The preparation method of fluid catalyst Download PDFInfo
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- CN107971024A CN107971024A CN201610917091.4A CN201610917091A CN107971024A CN 107971024 A CN107971024 A CN 107971024A CN 201610917091 A CN201610917091 A CN 201610917091A CN 107971024 A CN107971024 A CN 107971024A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 107
- 239000012530 fluid Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000002808 molecular sieve Substances 0.000 claims abstract description 25
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000002245 particle Substances 0.000 claims abstract description 24
- 239000011230 binding agent Substances 0.000 claims abstract description 15
- 239000012876 carrier material Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000004005 microsphere Substances 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 16
- 239000005995 Aluminium silicate Substances 0.000 claims description 9
- 235000012211 aluminium silicate Nutrition 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 7
- 229910001593 boehmite Inorganic materials 0.000 claims description 4
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims description 4
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 3
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 description 23
- 239000000725 suspension Substances 0.000 description 22
- 239000000047 product Substances 0.000 description 17
- 238000001694 spray drying Methods 0.000 description 12
- 238000001035 drying Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000008367 deionised water Substances 0.000 description 6
- 229910021641 deionized water Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000011017 operating method Methods 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- UDPGUMQDCGORJQ-UHFFFAOYSA-N (2-chloroethyl)phosphonic acid Chemical compound OP(O)(=O)CCCl UDPGUMQDCGORJQ-UHFFFAOYSA-N 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000004230 steam cracking Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000269350 Anura Species 0.000 description 1
- 239000005976 Ethephon Substances 0.000 description 1
- 206010068052 Mosaicism Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000013028 medium composition Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000003765 sex chromosome Anatomy 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/82—Phosphates
- B01J29/84—Aluminophosphates containing other elements, e.g. metals, boron
- B01J29/85—Silicoaluminophosphates [SAPO compounds]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/005—Mixtures of molecular sieves comprising at least one molecular sieve which is not an aluminosilicate zeolite, e.g. from groups B01J29/03 - B01J29/049 or B01J29/82 - B01J29/89
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/51—Spheres
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
Abstract
The present invention relates to a kind of preparation method of high-wearing feature fluid catalyst, mainly solve the problems, such as current fluid catalyst wear no resistance, catalyst stack less it is serious.The method that the present invention uses includes the following steps：(a) molecular sieve, binding agent, carrier material, liquid medium are configured to mixed liquor I in proportion；(b) it is spray-dried after high speed shear mixed liquor I, obtains microsphere particle；(c) gained particle is scattered in formation mixed liquor II in salic solution；(d) be spray-dried after high-speed stirred mixed liquor II, roast after obtain the good fluid catalyst of wearability.The method of the invention application is wide, does not have particular/special requirement to existing Catalyst Plant, available for a variety of fluid catalyst production processes.
Description
Technical field
The present invention relates to a kind of preparation method of fluid catalyst, and in particular to a kind of microspheroidal fluid catalyst
Preparation method, especially a kind of methanol or dimethyl ether of being applied to produce high-wearing feature stream in low-carbon alkene reaction process for raw material
Change the preparation method of bed catalyst.
Background technology
Ethene and propylene are as important basic chemical industry raw material, more than 98% ethephon (CEPHA),2-(chloroethyl) phosphonic acid steam cracking in the world at present
It is made, propylene is then mainly obtained by the two methods of the joint product of steam cracking ethene and byproduct of oil plant catalytic cracking.
Due to the demand sustainable growth of oil, and oil is non-renewable, therefore develops the unconventional of a kind of ethene and propylene
Petroleum resources production technology is extremely urgent.
Methanol-to-olefins (Methanol to Olefins, MTO) are a kind of using the methanol that coal or natural gas synthesize as original
Material, produces the Chemical Engineering Technology of low-carbon alkene in a fluidized bed reactor.MTO technologies have opened up non-conventional oil resource and have prepared chemical industry
One new technology route of product, it has also become one of new energy technology research hotspot.The quality of catalyst performance is to influence MTO skills
One of key factor that art commercial Application is promoted.Fluid catalyst is except wanting active particle diameter high, selectivity is good, certain
Outside the features such as distribution, also require catalyst that there is higher wear-resisting property.The catalyst of bad mechanical strength, runs during the reaction
Damage is more, may influence reasonable layout of the catalyst in dilute, close phase when polluting environment, is serious, or even device is not operated.
Finished catalyst enters in reaction-regeneration system when carrying out constantly circulation catalytic reaction, between catalyst and catalyst, catalyst
Between reactor tube walls, between catalyst and conveyance conduit, friction is continually colliding between catalyst and regenerative system so that
The fine-powdered of catalyst is difficult to avoid that.If catalyst strength is poor, catalyst abrasion is serious during the reaction, in order to make reaction
It can be smoothed out, need that fresh catalyst is continuously replenished in reaction process, add production cost.Therefore, fluidized to reduce
The abrasion of bed catalyst reactor, it is desirable to which catalyst has preferable wear resistance.
Patent CN102527445A discloses a kind of preparation method of low abrasion fluidized bed microspherical catalyst, by molecular sieve,
Adhesive, dispersant and water are made into slurry, are spray-dried after shearing, and obtained microsphere particle is dispersed in water again again
Shearing spraying is carried out, the fluid catalyst of low abrasion is obtained after then roasting microsphere particle.
Patent CN103769237A discloses a kind of method of raisingization bed catalyst wear-resisting property, and average grain diameter is less than
80 microns of catalyst fines form suspension after uniformly being mixed with molecular sieve, binding agent, carrier material and liquid medium, pass through
High speed shear suspension is simultaneously spray-dried, and effectively improves the wear-resisting property of finished catalyst.
Patent CN101157057A discloses a kind of method of fabricated in situ molecular sieve and prepares low abrasion catalyst, sharp first
After porous microsphere is made with spray shaping, then Hydrothermal Synthesiss processing is carried out to microballoon, orderly molecule is generated inside porous microsphere
Sieve structure, so as to obtain the microspherical catalyst of low abrasion.
Although some patent, which has been related to, improves the wear-resisting sex chromosome mosaicism of fluid catalyst, current fluidized bed catalytic
The wear-resistant strength of agent is still relatively low, need to further improve.
The content of the invention
The technical problems to be solved by the invention are fluid catalyst wear-resistant strength difference problems existing in the prior art,
Provide a kind of preparation method of high-wearing feature fluid catalyst.This method realizes the aobvious of the wear-resisting property of fluid catalyst
Write and improve, reduce the abrasion of catalyst during fluidized-bed reaction.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：A kind of preparation side of fluid catalyst
Method, comprises the following steps：(a) configure in proportion containing molecular sieve, binding agent, carrier material, liquid medium mixed liquor I；(b) it is high
It is spray-dried after fast shear-mixed liquid I, obtains microsphere particle；(c) thus obtained microsphere particle is scattered in salic solution
Middle formation mixed liquor II；(d) be spray-dried after this mixed liquor II of high-speed stirred, roast after obtain fluid catalyst.
In above-mentioned preparation scheme, molecular sieve is selected from SAPO-11, SAPO-34, SAPO-44, SAPO-47, SAPO-5, SAPO-
At least one of 56 or ZSM-5；Binding agent is selected from least one of Ludox, Aluminum sol, boehmite colloidal sol.
In above-mentioned technical proposal, it is preferred that molecular sieve is selected from least one of SAPO-34, SAPO-44, SAPO-5.
In above-mentioned technical proposal, it is preferred that in terms of parts by weight, ratio is formulated as in step (a)：Molecular sieve 5~50
Part, 10~60 parts of binding agent, 10~80 parts of carrier material, 20~90 parts of liquid medium.
In above-mentioned technical proposal, it is furthermore preferred that weight of binder number is 20~50 parts；It is furthermore preferred that weight of binder
Number is 30~50 parts；Most preferred content is 40~50 parts.
In above-mentioned technical proposal, it is furthermore preferred that carrier material parts by weight are 20~40 parts；It is furthermore preferred that carrier material
Parts by weight are 25~40 parts.
In above-mentioned technical proposal, it is preferred that SSZ-13 molecular sieves are further included in molecular sieve.
In above-mentioned technical proposal, it is furthermore preferred that the weight ratio between SSZ-13 molecular sieves and SAPO molecular sieve is (1:2)~
(2:1)。
Molecular sieve, binding agent, carrier material, the mixed liquor I of liquid medium composition are after the processing of colloid mill high speed shear
Suspension is formed, gained slurry average grain diameter is less than 5 μm, wherein 90% particle diameter is less than 6 μm.The condition of spray drying be into
250~450 DEG C of air temperature, 150~250 DEG C of leaving air temp, the catalyst granules and powder being spray-dried are dispersed in
Mixed liquor II is formed in salic solution；Be spray-dried after high-speed stirred mixed liquor II, roast after obtain fluid bed
Catalyst.
In above-mentioned technical proposal, it is preferred that fluid catalyst particle diameter distribution is 20~150 μm.
In above-mentioned technical proposal, it is preferred that fluid catalyst average grain diameter is 55~85 μm；It is furthermore preferred that fluid bed
Catalyst average grain diameter is 65~80 μm.
In above-mentioned technical proposal, salic solution is selected from Aluminum sol, silicon-aluminum sol, aluminiumsilicate sols and intends thin water aluminium
At least one of stone colloidal sol.It is 500~750 DEG C to be spray-dried obtained micro-spherical catalyst calcination temperature.Finished catalyst
Abrasion index is less than 1 weight %/hour, and preferred scope is less than 0.5 weight %/hour；More preferably less than 0.2 weight %/
Hour.
For catalyst abrasion strength resistance except having outside the Pass with binding agent kind in preparation process, the hardness of catalyst influences it
Also it is very big.If wrapping up the high material of one layer of hardness in catalyst external surface, fluid catalyst can be improved to a certain extent
Wear-resistant strength.Technical solution using the present invention, by shape after molecular sieve, binding agent, carrier material and liquid medium uniformly mixing
It is spray-dried into suspension, after this suspension of high speed shear and obtains solid particle, it is higher in one layer of hardness of particle outer layer covers
Aluminium oxide, then be spray-dried, high-temperature roasting catalyst obtains the high-wearing feature fluid catalyst of finished product.This microspheroidal is urged
Agent abrasion index is less than 0.5 weight %/hour, and coated alumina does not compare catalyst outer layer, catalyst abrasion index
More than 1.0 weight %/hour.Therefore, it is spray-dried again after fluid catalyst outer layer covers aluminium oxide, for improving
The wear-resisting property of catalyst is significant.
Below by specific embodiment, the present invention is illustrated in further detail, these embodiments are merely to illustrate the present invention,
Rather than limit the scope of the invention.The experimental method for the actual conditions being not specified in patent Example, usually according to routine
Condition carries out.
Embodiment
【Embodiment 1】
According to parts by weight, by 30 parts of 30 parts of SAPO-34 molecular sieves, 20 parts of kaolin, 30 parts of Aluminum sol and deionized water
It is sufficiently mixed and when high-speed stirred 1 is small forms mixed liquor I, this mixed liquor of high speed shear obtains suspension in 45 minutes.With laser grain
It is 3.9 μm to spend instrument measure suspension particle average grain diameter.It is spray-dried suspension, atomizer frequency 20HZ, inlet air temperature 340
DEG C, 200 DEG C of leaving air temp, collects the powder-product in the solid and cyclone separator at drying tower bottom, and then it is molten to be scattered in aluminium for it
Mixed liquor II is formed in glue, when this mixed liquor 1 of high-speed stirred is small, is then spray-dried, atomizer rotating speed frequency 25HZ, is sprayed
340 DEG C of the inlet air temperature of mist, 200 DEG C of leaving air temp.After spray drying, it is 65 μm that drying tower bottom, which is collected into average grain diameter,
Micro-spherical catalyst, when being then placed on that 600 DEG C of roasting temperatures 8 are small in muffle furnace, obtains fluid catalyst finished product,
This catalyst abrasion index is 0.39 weight %/hour
【Embodiment 2~6】
It is identical with operating procedure and experiment condition in embodiment 1, but atomizing disk speed-frequency, produce different-grain diameter
Big small catalyst, obtained catalyst abrasion index are shown in Table 1.
Table 1
| Catalyst average grain diameter (μm) | Abrasion index (weight %/hour) | |
| Embodiment 2 | 52 | 0.15 |
| Embodiment 3 | 58 | 0.32 |
| Embodiment 4 | 71 | 0.55 |
| Embodiment 5 | 76 | 0.63 |
| Embodiment 6 | 80 | 0.71 |
【Comparative example 1】
According to disclosed in CN102527445A, according to parts by weight, by 30 parts of SAPO-34 molecular sieves, 15 parts of kaolin, aluminium
Mixed liquor I is formed when 30 parts of 30 parts of colloidal sol and deionized water are sufficiently mixed and high-speed stirred 1 is small, this mixed liquor 45 of high speed shear divides
Clock obtains suspension.This suspension is spray-dried, obtained microsphere particle carries out following process A：It is dispersed in water
Formed after mixed liquor II is sheared again and be spray-dried.Repeat process A3 times, average grain diameter is obtained after 3 sprayings as 65 μm
Micro-spherical catalyst, when being then placed on that 600 DEG C of roasting temperatures 8 are small in muffle furnace, obtain fluid catalyst into
Product, this catalyst abrasion index are 0.89 weight %/hour.
【Embodiment 7】
It is identical with operating procedure and experiment condition in embodiment 1, it is spray-dried after mixed liquor I high speed shear,
Obtained catalyst granules is scattered in silicon-aluminum sol formation mixed liquor II, when then this mixed liquor 1 of high-speed stirred is small after carry out
Spray drying, spray drying bottom of towe are collected into the micro-spherical catalyst that average grain diameter is 67 μm, are then placed on muffle furnace
In 600 DEG C of roasting temperatures 8 it is small when, obtain fluid catalyst finished product, this catalyst abrasion index is 0.41 weight %/small
When.
【Embodiment 8】
It is identical with operating procedure and experiment condition in embodiment 1, it is spray-dried after mixed liquor I high speed shear,
Obtained catalyst granules is scattered in formation mixed liquor II in boehmite solution, when then this mixed liquor 1 of high-speed stirred is small
After be spray-dried, it is 64 μm of micro-spherical catalyst that spray drying bottom of towe, which is collected into average grain diameter, is then placed on
When 600 DEG C of roasting temperatures 8 are small in muffle furnace, fluid catalyst finished product is obtained, this catalyst abrasion index is 0.40 weight
Measure %/hour.
【Embodiment 9】
It is identical with operating procedure and experiment condition in embodiment 1, it is spray-dried after mixed liquor I high speed shear,
Obtained catalyst granules is scattered in formation mixed liquor II in aluminiumsilicate sols, laggard when then this mixed liquor 1 of high-speed stirred is small
Row spray drying, spray drying bottom of towe are collected into the micro-spherical catalyst that average grain diameter is 63 μm, are then placed on Ma Fu
When 600 DEG C of roasting temperatures 8 are small in stove, fluid catalyst finished product is obtained, this catalyst abrasion index is 0.38 weight %/small
When.
【Embodiment 10~19】
It is identical with operating procedure and experiment condition in embodiment 1, but binding agent and carrier material composition are different, obtain
To catalyst abrasion index be shown in Table 2.
Table 2
【Embodiment 20】
According to parts by weight, by 30 parts of 30 parts of SAPO-44 molecular sieves, 40 parts of kaolin, 30 parts of Aluminum sol and deionized water
It is sufficiently mixed and when high-speed stirred 1 is small forms mixed liquor I, this mixed liquor of high speed shear obtains suspension in 45 minutes.With laser grain
It is 3.8 μm to spend instrument measure suspension particle average grain diameter.It is spray-dried suspension, atomizer frequency 25HZ, inlet air temperature 340
DEG C, 200 DEG C of leaving air temp, collects the powder-product in the solid and cyclone separator at drying tower bottom, and then it is molten to be scattered in aluminium for it
Mixed liquor II is formed in glue, when this mixed liquor 1 of high-speed stirred is small, is then spray-dried, atomizer frequency 25HZ, spraying
340 DEG C of inlet air temperature, 200 DEG C of leaving air temp.After spray drying, drying tower bottom is collected into the microballoon that average grain diameter is 62 μm
Shape catalyst, when being then placed on that 600 DEG C of roasting temperatures 8 are small in muffle furnace, obtains fluid catalyst finished product, this is urged
Agent abrasion index is 0.16 weight %/hour
【Embodiment 21】
According to parts by weight, 30 parts of 30 parts of SAPO-5 molecular sieves, 40 parts of kaolin, 30 parts of Aluminum sol and deionized water are filled
Mixing is divided to form mixed liquor I when simultaneously high-speed stirred 1 is small, this mixed liquor of high speed shear obtains suspension in 45 minutes.Use laser particle size
Instrument measure suspension particle average grain diameter is 3.9 μm.Spray drying suspension, atomizer frequency 25HZ, 340 DEG C of inlet air temperature,
200 DEG C of leaving air temp, collects the powder-product in the solid and cyclone separator at drying tower bottom, and then it is scattered in Aluminum sol
Mixed liquor II is formed, when this mixed liquor 1 of high-speed stirred is small, is then spray-dried, atomizer frequency 25HZ, the inlet air of spraying
340 DEG C of temperature, 200 DEG C of leaving air temp.After spray drying, drying tower bottom is collected into the microspheroidal that average grain diameter is 62 μm and urges
Agent, when being then placed on that 600 DEG C of roasting temperatures 8 are small in muffle furnace, obtains fluid catalyst finished product, this catalyst
Abrasion index is 0.18 weight %/hour
【Embodiment 22】
According to parts by weight, by 10 parts of SAPO-34 molecular sieves, 20 parts of SSZ-13 molecular sieves, 20 parts of kaolin, Aluminum sol 30
Mixed liquor I is formed when 30 parts of part and deionized water are sufficiently mixed and high-speed stirred 1 is small, this mixed liquor of high speed shear obtains for 45 minutes
Suspension.It it is 3.9 μm with laser particle analyzer measure suspension particle average grain diameter.It is spray-dried suspension, atomizer frequency
20HZ, 340 DEG C of inlet air temperature, 200 DEG C of leaving air temp, collects the powder-product in the solid and cyclone separator at drying tower bottom,
Then it is scattered in formation mixed liquor II in Aluminum sol, when this mixed liquor 1 of high-speed stirred is small, is then spray-dried, and is atomized
Device speed-frequency 25HZ, 340 DEG C of the inlet air temperature of spraying, 200 DEG C of leaving air temp.After spray drying, drying tower bottom is collected
It is 65 μm of micro-spherical catalyst to average grain diameter, when being then placed on that 600 DEG C of roasting temperatures 8 are small in muffle furnace, obtains
To fluid catalyst finished product, this catalyst abrasion index is 0.19 weight %/hour.
【Embodiment 23】
According to parts by weight, by 20 parts of SAPO-34 molecular sieves, 10 parts of SSZ-13 molecular sieves, 20 parts of kaolin, Aluminum sol 30
Mixed liquor I is formed when 30 parts of part and deionized water are sufficiently mixed and high-speed stirred 1 is small, this mixed liquor of high speed shear obtains for 45 minutes
Suspension.It it is 3.9 μm with laser particle analyzer measure suspension particle average grain diameter.It is spray-dried suspension, atomizer frequency
20HZ, 340 DEG C of inlet air temperature, 200 DEG C of leaving air temp, collects the powder-product in the solid and cyclone separator at drying tower bottom,
Then it is scattered in formation mixed liquor II in Aluminum sol, when this mixed liquor 1 of high-speed stirred is small, is then spray-dried, and is atomized
Device speed-frequency 25HZ, 340 DEG C of the inlet air temperature of spraying, 200 DEG C of leaving air temp.After spray drying, drying tower bottom is collected
It is 65 μm of micro-spherical catalyst to average grain diameter, when being then placed on that 600 DEG C of roasting temperatures 8 are small in muffle furnace, obtains
To fluid catalyst finished product, this catalyst abrasion index is 0.19 weight %/hour.
Claims (12)
1. a kind of preparation method of fluid catalyst, comprises the following steps：(a) configuration contains molecular sieve, binding agent, load in proportion
The mixed liquor I of body material, liquid medium；(b) it is spray-dried after high speed shear mixed liquor I, obtains microsphere particle；(c) institute
Obtain microsphere particle and be scattered in formation mixed liquor II in salic solution；(d) it is dry that spraying is carried out after high-speed stirred mixed liquor II
Fluid catalyst is obtained after dry, roasting.
2. the preparation method of fluid catalyst according to claim 1, it is characterised in that the molecular sieve is selected from
At least one of SAPO-11, SAPO-34, SAPO-44, SAPO-47, SAPO-5, SAPO-56 or ZSM-5.
3. the preparation method of fluid catalyst according to claim 1, it is characterised in that it is molten that the binding agent is selected from silicon
At least one of glue, Aluminum sol and boehmite colloidal sol.
4. the preparation method of fluid catalyst according to claim 1, it is characterised in that step (b) high speed shear is mixed
Mean particle size is less than 5 μm in gained slurry after conjunction liquid I, wherein 90% particle diameter is less than 6 μm.
5. the preparation method of fluid catalyst according to claim 1, it is characterised in that step (d) need not carry out
Cutting operation.
6. the preparation method of fluid catalyst according to claim 1, it is characterised in that in terms of parts by weight, in step
Suddenly ratio is formulated as in (a)：5~50 parts of molecular sieve, 5~60 parts of binding agent, 10~80 parts of carrier material, liquid medium 20~90
Part.
7. the preparation method of fluid catalyst according to claim 6, it is characterised in that binding agent number is 20~40
Part.
8. the preparation method of fluid catalyst according to claim 6, it is characterised in that carrier material number for 10~
40 parts.
9. the preparation method of fluid catalyst according to claim 1, it is characterised in that the salic solution
Selected from least one of Aluminum sol, silicon-aluminum sol, aluminiumsilicate sols and boehmite colloidal sol.
10. the preparation method of fluid catalyst according to claim 1, it is characterised in that fluid catalyst is worn
Index is less than 1.0 weight %/hour.
11. the preparation method of fluid catalyst according to claim 10, it is characterised in that fluid catalyst is worn
Index is less than 0.5 weight %/hour.
12. the preparation method of fluid catalyst according to claim 10, it is characterised in that fluid catalyst is worn
Index is less than 0.2 weight %/hour.
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