CN110342910A - By the method and ceramic hollow fibrous membrane of FCC dead catalyst preparation ceramic hollow fibrous membrane - Google Patents
By the method and ceramic hollow fibrous membrane of FCC dead catalyst preparation ceramic hollow fibrous membrane Download PDFInfo
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- CN110342910A CN110342910A CN201910775449.8A CN201910775449A CN110342910A CN 110342910 A CN110342910 A CN 110342910A CN 201910775449 A CN201910775449 A CN 201910775449A CN 110342910 A CN110342910 A CN 110342910A
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- B01D67/0039—Inorganic membrane manufacture
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/08—Hollow fibre membranes
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
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- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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Abstract
The present invention relates to solid waste resource recoveries to utilize technical field, more particularly, to a kind of method and ceramic hollow fibrous membrane by FCC dead catalyst preparation ceramic hollow fibrous membrane.The described method includes: by tunica fibrosa idiosome high temperature sintering to remove organic polymer and make heavy metals immobilization therein as spinelle；Tunica fibrosa idiosome is obtained by casting film sizing material forming；Casting film slurry is mixed to get in the polymer solution containing organic polymer by pretreated FCC dead catalyst powder and alumina powder；The preprocess method of FCC dead catalyst powder includes: FCC dead catalyst powder impregnation in metal-cured agent solution of ground processing.For the present invention while curing heavy metal is thoroughly to solve environmental pollution caused by FCC dead catalyst, Resource recovery reduces the preparation cost of ceramic hollow fibrous membrane；Secondary pollution, with good economic efficiency and environmental benefit will not be caused to environment in product abandonment.
Description
Technical field
The present invention relates to solid waste resource recoveries to utilize technical field, more particularly, to one kind by FCC dead catalyst system
The method and ceramic hollow fibrous membrane of standby ceramic hollow fibrous membrane.
Background technique
Catalytic cracking (FCC) is most important secondary processing process in petroleum refining industry, the processing of the year of China's catalytic cracking at present
For ability more than 1.5 hundred million tons, catalyst usage amount accounts for 86% or more of petroleum refining industry catalyst amount, generates nearly 20 every year
Ten thousand tons of FCC dead catalyst, FCC dead catalyst in 2016 are put into " National Hazard waste register ", production, the storage of FCC catalyst
The processes such as depositing, transport, disposing will be heavily regulated.Burial processing is often done to FCC dead catalyst at present, causes heavy metal pollution
While also greatly waste resource, however recycled using FCC dead catalyst as resource, processing cost is high, and product is attached
Value added low, market driver is small, it is difficult to promote.How FCC dead catalyst is pre-processed, prepared by curing heavy metal while
High value added product, and in product abandonment secondary pollution will not be caused to environment, it is always issues that need special attention.
In the prior art, have by FCC dead catalyst prepare mullite, molecular sieve, rubber composite material, it is non-burning brick, other
The catalyst etc. of reaction, but be directed in the technology of FCC dead catalyst progress recycling treatment at present and have secondary pollution more, produced
Product added value is low, market driver is small, as other catalysts basic research weakness and cannot thoroughly solve heavy metal
Therefore the problems such as pollution need a kind of green, resource utilization processing FCC dead catalyst technology.
In view of this, the present invention is specifically proposed.
Summary of the invention
The first object of the present invention is to provide a kind of method by FCC dead catalyst preparation ceramic hollow fibrous membrane, with
Solve low there are secondary pollution and added value of product technical problem during recycling treatment existing in the prior art.
The second object of the present invention is to provide a kind of ceramic hollow fibrous membrane prepared by the preparation method, former
The cost of material is low, while can reduce maturing temperature using the metal component in dead catalyst, further reduced production cost, tool
There are good environmental benefit and market effect.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
By the method for FCC dead catalyst preparation ceramic hollow fibrous membrane, include the following steps:
By tunica fibrosa idiosome high temperature sintering to remove organic polymer and make heavy metals immobilization therein as spinelle；
The tunica fibrosa idiosome is obtained by casting film sizing material forming；The casting film slurry is by pretreated FCC dead catalyst
Powder and alumina powder are mixed to get in the polymer solution containing organic polymer；
The preprocess method of the FCC dead catalyst powder includes: the FCC dead catalyst powder of ground processing in metal
Impregnation in curing agent solution.
The present invention, can be by the useless catalysis of FCC by carrying out impregnation in metal-cured agent solution to FCC dead catalyst
Heavy metal in agent carries out primary solidification, heavy metal pollution caused by avoiding heavy metal from losing etc..Casting film sizing material forming is obtained
Tunica fibrosa be sintered under hot conditions, heavy metal deeply-curing spinelle can be made.
In addition, FCC dead catalyst is mixed with alumina powder carries out spinning, obtained ceramic hollow fibrous membrane product is additional
Value is high.
The present invention is while curing heavy metal is thoroughly to solve environmental pollution caused by FCC dead catalyst, recycling
Resource reduces the preparation cost of ceramic hollow fibrous membrane, has obtained high value-added product；And it will not be right in product abandonment
Environment causes secondary pollution, with good economic efficiency and environmental benefit.
In some specific embodiments of the present invention, the matter of pretreated FCC dead catalyst powder and alumina powder
Amount than for (1~8) ﹕ (9~2), or be (3~6) ﹕ (7~4).
As in different embodiments, the mass ratio of pretreated FCC dead catalyst powder and alumina powder can be with
For 1 ﹕ 9,2 ﹕ 8,3 ﹕ 7,4 ﹕ 6,5 ﹕ 5,6 ﹕ 4,7 ﹕ 3,8 ﹕ 2 etc..
In some specific embodiments of the present invention, the polymer solution mainly includes organic polymer, organic solvent
And additive.
If the organic polymer can be polyether sulfone, the organic solvent can be n-methyl-2-pyrrolidone, described
Additive can be polyvinylpyrrolidone etc..
Specifically, the polymer solution mainly includes polyether sulfone, n-methyl-2-pyrrolidone and polyvinylpyrrolidine
Ketone.
Optionally, mainly including following component according to parts by weight in the polymer solution: 15-25 parts of polyether sulfone,
70-80 parts and polyvinylpyrrolidone 1-10 parts of n-methyl-2-pyrrolidone.Preferably, it is mainly wrapped in the polymer solution
Include following component according to parts by weight: 18-22 parts of polyether sulfone, 72-78 parts of n-methyl-2-pyrrolidone and polyvinylpyrrolidine
3-7 parts of ketone.It is further preferred that mainly including following component according to parts by weight: polyether sulfone 21 in the polymer solution
Part, 75 parts of n-methyl-2-pyrrolidone and 4 parts of polyvinylpyrrolidone.
In some specific embodiments of the present invention, metal-cured dose of mass concentration is in the metal-cured agent solution
3-15%.
In a preferred embodiment of the invention, solvent includes ethyl xanthate and silicon in the metal-cured agent solution
Hydrochlorate is any one or more of, preferably includes ethyl xanthate and silicate.
Optionally, the ethyl xanthate includes any one of ehtyl potassium xanthate and sodium ethylxanthate or two
Kind, preferably sodium ethylxanthate.
Optionally, the silicate includes any one of potassium silicate and sodium metasilicate or two kinds, preferably sodium metasilicate.
In some specific embodiments of the present invention, the solute in the metal-cured agent solution includes sodium ethylxanthate
And sodium metasilicate.
In some specific embodiments of the present invention, the mass ratio of sodium ethylxanthate and sodium metasilicate is 2~3:7~8,
It such as can be 1 ﹕ 4,1 ﹕ 3,1 ﹕ 2.5.
Optionally, the time of the impregnation is 5-24h.
Optionally, partial size≤1.5 μm of the FCC dead catalyst powder of the ground processing.In actual operation, will
FCC dead catalyst is ground to behind partial size≤1.5 μm carries out impregnation etc. again.
After impregnation, FCC dead catalyst powder is collected by modes such as filterings, is then dried.Dry condition
It is optional are as follows: to be dried under the conditions of 30-70 DEG C.
In some specific embodiments of the present invention, in the casting film slurry, FCC dead catalyst powder and alumina powder
Quality sum account for the 50-90%, preferably 60-80% of the casting film slurry.
Before the forming, casting film slurry is vacuumized into 0.6-1.2h to remove residual bubbles.
In some specific embodiments of the present invention, the forming method of the tunica fibrosa includes the following steps:
Gelling agent is added into casting film slurry, is forced into 0.2-0.5bar, extrusion obtains fiber wet film, and gelling solidification obtains
Tunica fibrosa idiosome.
Optionally, fiber wet film immerses outer coagulating bath by the dry-spinning path of 5-30cm, carries out the gelling above for 24 hours and solidifies shape
At tunica fibrosa idiosome.
Preferably, before sintering processes, the tunica fibrosa idiosome is dipped in water, it is dry.Tunica fibrosa idiosome is immersed in water
It is middle to cement out residual organic solvents, then spontaneously dried.
In a preferred embodiment of the invention, the method for the sintering processes includes: to be warming up to 750 ± 10 DEG C and keep the temperature
After 0.5-2h, then it is warming up to 950-1300 DEG C of heat preservation 0.5-7h, cooled down.
As in a particular embodiment, after 750 ± 10 DEG C of heat preservation 0.5-2h, 950 DEG C, 980 DEG C, 1000 can be warming up to
DEG C, 1050 DEG C, 1100 DEG C, 1150 DEG C, 1200 DEG C, 1250 DEG C, 1300 DEG C etc..Such as, 1000-1300 DEG C of progress can be warming up to
Sintering processes；It is sintered it is furthermore preferred that 1000-1200 DEG C can be warming up to.
In sintering, it is warming up to 750 ± 10 DEG C and keeps the temperature, volatile materials and organic polymer can be removed, avoided
During further heating up, influence of the organic polymer to ceramic hollow fibrous membrane sintering process.
Using raw material of the invention, cooperate pretreated FCC dead catalyst and aluminium oxide, can guarantee properties of product
Under the premise of, moreover it is possible to part reduces maturing temperature and has taken into account properties of product and low energy consumption to reduce production energy consumption.
The method of the cooling preferably includes: Temperature fall after being down to 400 ± 10 DEG C with 1-10 DEG C/min rate of temperature fall.
In a preferred embodiment of the invention, the atmosphere of the sintering is air.
Preferably, the heating rate of the sintering is 1-10 DEG C/min.
For the present invention using FCC dead catalyst as raw material, the metal component in FCC dead catalyst can reduce ceramic hollow
The sintering temperature of tunica fibrosa, reduces production cost.
Using above-mentioned sintering condition, the journey by the heavy metal deeply-curing in FCC dead catalyst for spinelle can be increased
Degree, in product abandonment, will not cause secondary pollution to environment, have good environmental benefit.
The present invention also provides a kind of ceramic hollow fibrous membranes being prepared using the above method.
The ceramic hollow fibrous membrane large specific surface area being prepared using method of the invention, intensity is high, and good water permeability.
Compared with prior art, the invention has the benefit that
(1) present invention combines the heavy metals immobilization of FCC dead catalyst with the preparation of ceramic hollow fibrous membrane, is solidifying
While heavy metal is thoroughly to solve FCC dead catalyst environmental pollution, resource has been recycled, has reduced the system of ceramic hollow fibrous membrane
Standby cost, has obtained high value added product；
(2) present invention can make heavy metal deeply-curing spinelle, so that product by optimizing to sintering process
Secondary pollution, with good economic efficiency and environmental benefit will not be caused when discarded to environment；
(3) the ceramic hollow fibrous membrane large specific surface area that method of the invention is prepared, intensity is high, and good water permeability.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with specific embodiment, but ability
Field technique personnel will be understood that following described embodiments are some of the embodiments of the present invention, instead of all the embodiments,
It is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.The person that is not specified actual conditions in embodiment, carries out according to conventional conditions or manufacturer's recommended conditions.Agents useful for same or instrument
Production firm person is not specified, is the conventional products that can be obtained by commercially available purchase.
Embodiment 1
A kind of method by the preprocessed preparation ceramic hollow fibrous membrane of FCC dead catalyst is present embodiments provided, including
Following steps:
(1) FCC dead catalyst is ground to partial size≤1.5 μm, obtains FCC dead catalyst powder；Then FCC is given up
Catalyst fines are immersed in 10h in the metal-cured agent solution that Solute mass fraction is 7%, after impregnation is collected by filtration
FCC dead catalyst powder is placed in baking oven and dries in 70 DEG C, carries out primary solidification to the heavy metal in dead catalyst；Wherein, institute
Stating the solute in metal-cured agent solution is sodium metasilicate；FCC dead catalyst be Ni, V, Sb tenor be respectively 0.79%,
0.52%, 0.27% FCC dead catalyst；
(2) by step (1) pretreated FCC dead catalyst powder and alumina powder according to mass ratio be 3 ﹕ 7
After mixing, it is uniformly mixed in addition polymer solution and obtains casting film slurry；Wherein, FCC dead catalyst powder and alumina powder
Quality sum account for the 70% of casting film slurry；
The polymer solution is polyether sulfone, n-methyl-2-pyrrolidone and the polyethylene pyrrole for being in mass ratio 21 ﹕, 75 ﹕ 4
Pyrrolidone mixes；
(3) casting film slurry obtained in step (2) is imported in the slurry tank of device for spinning, it is remaining first vacuumizes 1h removing
Bubble then passes to conventional gelling agents, fills nitrogen pressure to 0.25bar, and the casting film slurry after vacuumizing squeezes into spinning head,
The fiber wet film squeezed out from spinning head immerses outer coagulating bath by the dry-spinning path of 15cm, carries out the above gelling for 24 hours and is formed by curing pottery
Porcelain hollow-fibre membrane idiosome；
(4) ceramic hollow fibrous membrane idiosome obtained in step (3) is in deionized water replaced residual organic solvents
Out, it after then ceramic hollow fibrous membrane idiosome being spontaneously dried, is placed in the high temperature furnace that sintering atmosphere is air and is sintered；
The step of sintering includes: to be warming up to 750 DEG C with the heating rate of 5 DEG C/min, and after constant temperature 1.5h, then with 2
DEG C/heating rate of min is warming up to 1300 DEG C of sintering 3h, it is dropped naturally after being finally down to 400 DEG C with the rate of temperature fall of 5 DEG C/min
Temperature obtains ceramic hollow fibrous membrane.
Embodiment 2
The preparation method of the present embodiment reference implementation example 1, difference are only that: in step (4), the step of sintering, is wrapped
It includes: being warming up to 750 DEG C with the heating rate of 5 DEG C/min, and after constant temperature 1.5h, then be warming up to the heating rate of 2 DEG C/min
1200 DEG C of sintering 3h, Temperature fall after being finally down to 400 DEG C with the rate of temperature fall of 5 DEG C/min obtain ceramic hollow fibrous membrane.
Embodiment 3
The preparation method of the present embodiment reference implementation example 1, difference are only that: in step (4), the step of sintering, is wrapped
It includes: being warming up to 750 DEG C with the heating rate of 5 DEG C/min, and after constant temperature 1.5h, then be warming up to the heating rate of 2 DEG C/min
1150 DEG C of sintering 3h, Temperature fall after being finally down to 400 DEG C with the rate of temperature fall of 5 DEG C/min obtain ceramic hollow fibrous membrane.
Embodiment 4
The preparation method of the present embodiment reference implementation example 1, difference are only that: in step (4), the step of sintering, is wrapped
It includes: being warming up to 750 DEG C with the heating rate of 5 DEG C/min, and after constant temperature 1.5h, then be warming up to the heating rate of 2 DEG C/min
1100 DEG C of sintering 3h, Temperature fall after being finally down to 400 DEG C with the rate of temperature fall of 5 DEG C/min obtain ceramic hollow fibrous membrane.
Embodiment 5
A kind of method by the preprocessed preparation ceramic hollow fibrous membrane of FCC dead catalyst is present embodiments provided, including
Following steps:
(1) FCC dead catalyst is ground to partial size≤1.5 μm, obtains FCC dead catalyst powder；Then FCC is given up
Catalyst fines are immersed in 10h in the metal-cured agent solution that the mass fraction of solute is 7%, after impregnation is collected by filtration
FCC dead catalyst powder is placed in baking oven and dries in 70 DEG C, carries out primary solidification to the heavy metal in dead catalyst；Wherein, institute
Stating the solute in metal-cured agent solution is the sodium ethylxanthate and sodium metasilicate that mass ratio is 1 ﹕ 4；FCC dead catalyst be Ni,
V, Sb tenor is respectively 0.79%, 0.52%, 0.27% FCC dead catalyst；
(2) by step (1) pretreated FCC dead catalyst powder and alumina powder according to mass ratio be 3 ﹕ 7
After mixing, it is uniformly mixed in addition polymer solution and obtains casting film slurry；Wherein, FCC dead catalyst powder and alumina powder
Quality sum account for the 70% of casting film slurry；
The polymer solution is polyether sulfone, n-methyl-2-pyrrolidone and the polyethylene pyrrole for being in mass ratio 21 ﹕, 75 ﹕ 4
Pyrrolidone mixes；
(3) casting film slurry obtained in step (2) is imported in the slurry tank of device for spinning, it is remaining first vacuumizes 1h removing
Bubble then passes to conventional gelling agents, fills nitrogen pressure to 0.25bar, and the casting film slurry after vacuumizing squeezes into spinning head,
The fiber wet film squeezed out from spinning head immerses outer coagulating bath by the dry-spinning path of 15cm, carries out the above gelling for 24 hours and is formed by curing pottery
Porcelain hollow-fibre membrane idiosome；
(4) ceramic hollow fibrous membrane idiosome obtained in step (3) is in deionized water replaced residual organic solvents
Out, it after then ceramic hollow fibrous membrane idiosome being spontaneously dried, is placed in the high temperature furnace that sintering atmosphere is air and is sintered；
The step of sintering includes: to be warming up to 750 DEG C with the heating rate of 5 DEG C/min, and after constant temperature 1.5h, then with 2
DEG C/heating rate of min is warming up to 1200 DEG C of sintering 3h, it is dropped naturally after being finally down to 400 DEG C with the rate of temperature fall of 5 DEG C/min
Temperature obtains ceramic hollow fibrous membrane.
Embodiment 6
The preparation method of the present embodiment reference implementation example 5, difference are only that: the pretreatment in step (2), in step (1)
The mass ratio of FCC dead catalyst powder and alumina powder afterwards is 1 ﹕ 9.
Embodiment 7
The preparation method of the present embodiment reference implementation example 5, difference are only that: the pretreatment in step (2), in step (1)
The mass ratio of FCC dead catalyst powder and alumina powder afterwards is 4 ﹕ 1.
Comparative example 1
The preparation method of 1 reference implementation example 1 of comparative example, difference are: directly mixing alumina powder and polymer solution
It closes uniformly, obtains casting film slurry, then carry out identical casting film and sintering step；Wherein, the quality of alumina powder accounts for casting film
The 70% of slurry.
Experimental example 1
For the performance for the ceramic hollow fibrous membrane that comparative illustration various embodiments of the present invention and comparative example are prepared, to this
The performance for the ceramic hollow fibrous membrane that inventive embodiments 1-4,7 and comparative example 1 are prepared is detected, test result such as table 1
It is shown.Wherein, the pressure of pure water flux test is 0.5bar.
The performance test results of the different ceramic hollow fibrous membranes of table 1
| Number | Pure water flux (L/m2·h) | Porosity (%) | Pore-size distribution |
| Embodiment 1 | 5100 | 30.1 | 82nm~1 μm |
| Embodiment 2 | 5125 | 31 | 90nm~1 μm |
| Embodiment 3 | 5080 | 29.5 | 85nm~1 μm |
| Embodiment 4 | 5010 | 27 | 60nm~1 μm |
| Embodiment 5 | 5150 | 31.5 | 80nm~1 μm |
| Embodiment 6 | 5200 | 32 | 85nm~1 μm |
| Embodiment 7 | 4955 | 25 | 50nm~1 μm |
| Comparative example 1 | 5120 | 30.2 | 80nm~1 μm |
From upper table 1 it is found that the indices of the ceramic hollow fibrous membrane prepared using preparation method of the invention with than
It is close compared with the index in example 1, illustrate that it is feasible for preparing ceramic hollow fibrous membrane as a kind of raw material using FCC dead catalyst
, and under the premise of guaranteeing properties of product, additionally it is possible to part reduces maturing temperature, to reduce production energy consumption.
Experimental example 2
The shadow of the performance for ceramic hollow fibrous membrane various embodiments of the present invention being prepared for comparative illustration curing agent
It rings, after handling FCC dead catalyst powder infusion the metal-cured agent solution using the embodiment of the present invention 2 and embodiment 5, gold
The content of beary metal belonged in curing agent solution is determined, and test result is as shown in table 2.
Content of beary metal in metal-cured agent solution after being handled under the conditions of the different curing agent of table 2
| Curing agent type | Ni(mg/L) | V(mg/L) | Sb(mg/L) |
| Sodium metasilicate | 0.26 | 0.95 | 1.08 |
| Sodium ethylxanthate and sodium metasilicate (1 ﹕ 4) | 0.23 | 0.82 | 1.05 |
From upper table 2 it is found that using sodium ethylxanthate and sodium metasilicate as curing agent when to the weight in FCC dead catalyst
Metal-cured ability is stronger.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. by the method for FCC dead catalyst preparation ceramic hollow fibrous membrane, which comprises the steps of:
By tunica fibrosa idiosome high temperature sintering to remove organic polymer and make heavy metals immobilization therein as spinelle；
The tunica fibrosa idiosome is obtained by casting film sizing material forming；The casting film slurry is by pretreated FCC dead catalyst powder
It is mixed to get in the polymer solution containing organic polymer with alumina powder；
The preprocess method of the FCC dead catalyst powder includes: the FCC dead catalyst powder of ground processing in metal-cured
Impregnation in agent solution.
2. the method according to claim 1 by FCC dead catalyst preparation ceramic hollow fibrous membrane, which is characterized in that warp
The mass ratio of pretreated FCC dead catalyst powder and alumina powder is (1~8) ﹕ (9~2)；
Preferably, the mass ratio of pretreated FCC dead catalyst powder and alumina powder is (3~6) ﹕ (7~4).
3. the method according to claim 1 by FCC dead catalyst preparation ceramic hollow fibrous membrane, which is characterized in that institute
Stating solute in metal-cured agent solution includes any one of ethyl xanthate and silicate or two kinds；
Optionally, the ethyl xanthate includes any one of ehtyl potassium xanthate and sodium ethylxanthate or two kinds, excellent
It is selected as sodium ethylxanthate；
Optionally, the silicate includes any one of potassium silicate and sodium metasilicate or two kinds, preferably sodium metasilicate；
Preferably, the mass ratio of sodium ethylxanthate and sodium metasilicate is 2~3:7~8；
Preferably, metal-cured dose of the mass concentration is 3~15%.
4. the method according to claim 3 by FCC dead catalyst preparation ceramic hollow fibrous membrane, which is characterized in that institute
The time for stating impregnation is 5-24h；
Preferably, partial size≤1.5 μm of the FCC dead catalyst powder of the ground processing.
5. the method according to claim 1 by FCC dead catalyst preparation ceramic hollow fibrous membrane, which is characterized in that institute
Stating polymer solution mainly includes organic polymer, organic solvent and additive；
Preferably, mainly including following component according to parts by weight in the polymer solution: 15-25 parts of polyether sulfone, N- first
Base -70-80 parts of 2-Pyrrolidone and polyvinylpyrrolidone 1-10 parts.
6. the method according to claim 1-5 by FCC dead catalyst preparation ceramic hollow fibrous membrane, feature
It is, in the casting film slurry, the quality sum of FCC dead catalyst powder and alumina powder accounts for the 50- of the casting film slurry
90%.
7. the method according to claim 1 by FCC dead catalyst preparation ceramic hollow fibrous membrane, which is characterized in that
Gelling agent is added in casting film slurry, is forced into 0.2-0.5bar, extrusion obtains fiber wet film, and gelling solidification obtains tunica fibrosa embryo
Body；
Preferably, the fiber wet film immerses outer coagulating bath by the dry-spinning path of 5-30cm, carries out the gelling above for 24 hours and solidifies shape
At tunica fibrosa idiosome.
8. -5,7 described in any item methods by FCC dead catalyst preparation ceramic hollow fibrous membrane according to claim 1, special
Sign is, the method for the sintering processes includes: after being warming up to 750 ± 10 DEG C and keeping the temperature 0.5-2h, then is warming up to 950-1300
DEG C heat preservation 0.5-7h, cooling；
Preferably, after 750 ± 10 DEG C of heat preservation 0.5-2h, then it is warming up to 1000-1300 DEG C of heat preservation 0.5-7h, cooled down.
9. the method according to claim 8 by FCC dead catalyst preparation ceramic hollow fibrous membrane, which is characterized in that institute
The heating rate for stating sintering is 1-10 DEG C/min；
Preferably, the cooling includes: Temperature fall after being down to 400 ± 10 DEG C with 1-10 DEG C/min rate of temperature fall.
10. the described in any item methods by FCC dead catalyst preparation ceramic hollow fibrous membrane of claim 1-9 are prepared
Ceramic hollow fibrous membrane.
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