CN105771475B - A kind of filtering high-temperature flue gas ceramic membrane and its method of preparation - Google Patents
A kind of filtering high-temperature flue gas ceramic membrane and its method of preparation Download PDFInfo
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- CN105771475B CN105771475B CN201610147989.8A CN201610147989A CN105771475B CN 105771475 B CN105771475 B CN 105771475B CN 201610147989 A CN201610147989 A CN 201610147989A CN 105771475 B CN105771475 B CN 105771475B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8637—Simultaneously removing sulfur oxides and nitrogen oxides
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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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
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- C—CHEMISTRY; METALLURGY
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3215—Barium oxides or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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Abstract
A kind of filtering high-temperature flue gas ceramic membrane and preparation method thereof, including following component, the weight proportion of each component are as follows: corundum 60-75 parts of (5 μm -100 μm of partial size) (100 μm -300 μm of length of mullite fiber, 1-10 μm of diameter) 1-2 parts of above-mentioned component weight of 10-30 parts of silicon powder (200 mesh) 2-10 parts of Suzhou soils (200 mesh) 1-10 parts of barium carbonates (300 mesh) be 100 parts, it is additional as benchmark: 50-100 parts of water of 0.5-2 parts of sodium cellulose glycolate technical grade.By each component of filtering high-temperature flue gas film ball milling mixing according to the ratio, supporter (carrier of film) is immersed to the filtering high-temperature flue gas mixed in film slurry, after taking-up, drying firing is formed the ceramic membrane with highly-breathable.
Description
Technical field
The invention belongs to high-temperature flue gas process field, it is related to the product using filtering high-temperature flue gas dust removal process exhaust gas, especially
Refer to a kind of filtering high-temperature flue gas ceramic membrane product, especially suitable for works such as electric power, coal chemical industry, petrochemical industry, manufacture of cement
Industry waste gas treatment engineering, while providing a kind of manufacturing method of high effective flue gas filtering porous ceramics membrane material.
Background technique
Environmental pollution is serious recent years in China, environmental pressure is increasing, thus high temperature fume dust removal class product is answered
With the effect that can greatly improve exhaust-gas treatment, processing cost is reduced.By the use of high temperature fume dust removal membrane material, make exhaust gas
Processing technique becomes more efficient, more stable, more energy efficient, and application range constantly expands, especially in electric power, coal chemical industry, petroleum
The industrial waste gases such as chemical industry, manufacture of cement are handled in engineering, and high temperature fume dust removal technology can play an important role.Therefore, it mentions
The problems such as performance of high existing filtering high-temperature flue gas membrane material, it is for solving China's energy shortage, environmental pollution, all play ten
Divide important role.
From the point of view of the level that technology develops, the filtering high-temperature flue gas film product quality of domestic production at present is irregular, with
Foreign Advanced Lerel is compared, in the prevalence of biggish gap in properties of product.Existing filtering high-temperature flue gas film mostly with
The mode pore-forming of particle packing, the porosity is low, and filtration resistance is big, and filtering pressure drop is big, and the ability for handling exhaust gas is poor；Secondly, existing
Filtering high-temperature flue gas film have a single function, the solid matter in flue gas can only be filtered, can not decomposing harmful substances, greatly reduce
Exhaust treatment efficiency, limit high-temperature flue gas membrane material uses field.
Summary of the invention
It is an object of the invention to overcome the shortcomings of above-mentioned prior art, it is low simultaneously to provide a kind of highly-breathable, filtration resistance
Desulphurization denitration can be carried out to flue gas while smoke filtration, the toxic component in exhaust gas is effectively reduced, has effectively widened height
The method of the filtering high-temperature flue gas ceramic membrane and its preparation using field of warm smoke filtration membrane material.
Purpose to realize the present invention provides following technical scheme: a kind of filtering high-temperature flue gas ceramic membrane, feature exist
In including following component, the weight proportion of each component are as follows: 60-75 parts of corundum (5 μm -100 μm of partial size)
10-30 parts of mullite fiber (100 μm -300 μm of length, 1-10 μm of diameter)
2-10 parts of silicon powder (200 mesh)
1-10 parts of Suzhou soil (200 mesh)
1-2 parts of barium carbonate (300 mesh)
Above-mentioned component weight is 100 parts, additional as benchmark:
0.5-2 parts of sodium cellulose glycolate technical grade
50-100 parts of water.
Purpose to realize the present invention provides a kind of filtering high-temperature flue gas ceramic film preparation method, it is characterised in that will
Supporter (carrier of film) is immersed the high-temperature flue gas mixed by each component of filtering high-temperature flue gas film ball milling mixing according to the ratio
In filtering film slurry, after taking-up, drying firing is formed the ceramic membrane with highly-breathable.
It is coated preferably, the ceramic membrane of highly-breathable is immersed in catalyst pulp, takes out drying, had
There is a ceramic membrane of desulphurization denitration function, catalyst pulp each component ball milling mixing according to the ratio, the catalyst pulp component
Weight proportion are as follows:
V2O5-WO3(MoO3)/TiO2100 parts of (500 mesh)
Above-mentioned component weight is 100 parts, additional as benchmark:
0.1-2 parts of waterglass technical grade
50-300 parts of water.
Preferably, the preprocess method of supporter are as follows: first use supporter the sodium hydroxide solution of 1-5% concentration to impregnate
3-6 hours, after rinsing well, then dry that be down to room temperature spare.
Preferably, each component of filtering high-temperature flue gas film ball milling mixing method according to the ratio are as follows: ball milling is used, when mixing
Between 5-8h, cross 80 meshes.
Preferably, supporter takes out after filtering high-temperature flue gas was with film impregnating slurry 10-40 seconds, then it is placed on baking oven
Dry 3h or more at 50 DEG C of interior constant temperature, then 100 DEG C of dry 2h or more are warming up to, it is packed into kiln furnitures, with 1.5 DEG C/min in kiln
It is warming up to 500 DEG C (4 ~ 6h), then is warming up to 1200 DEG C ~ 1250 DEG C (6h ~ 7.5h) with 2 DEG C/min, keep the temperature 1 ~ 3h.
Preferably, catalyst components mixing is prepared into slurry using ball milling, incorporation time 24-48h crosses 200 mesh
After sieve, it will be immersed in the slurry mixed by the ceramic membrane prepared；Dipping takes out after 20-40 seconds, is then placed in baking oven
Dry 3h or more at 50 DEG C of constant temperature, then it is warming up to 100 DEG C of dry 2h or more.
The invention has the advantages that: the present invention by the component and structure of change conventional high-temperature smoke filtration membrane material, makes
The material porosity is higher, effectively improves gas permeability, improves exhaust-gas treatment ability, while coating catalyst in fenestra road,
So that membrane material is carried out desulphurization denitration to exhaust gas while filtering exhaust gas, the toxic component in exhaust gas is effectively reduced, effectively
The use field of filtering high-temperature flue gas membrane material is widened in ground.
Specific embodiment
Embodiment 1: a kind of coal chemical industry exhaust-gas treatment ceramic membrane materials prepare that the specific method is as follows:
(1) 1% sodium hydroxide solution of supporter is impregnated 5 hours, with distilled water flushing it is clean after, it is spare after dry.
(2) proportion of the filtering high-temperature flue gas with membrane material each raw material component by weight are as follows:
| Corundum | Mullite fiber | Silicon powder | Suzhou soil | Barium carbonate |
| 70 | 20 | 5 | 3 | 2 |
Then 0.8 part of additional sodium cellulose glycolate, 50 parts of water will pass through after crossing 80 meshes through the uniform 6h of ball milling mixing
Pretreated supporter immerses in the slurry mixed；Dipping takes out after 20 seconds, is then placed in baking oven at 50 DEG C of constant temperature dry
3h or more, then 100 DEG C of dry 2h or more are warming up to, it is packed into kiln furnitures, is warming up to 500 DEG C (about with 1.5 DEG C/min in kiln
6h), then with 2 DEG C/min 1200 DEG C are warming up to, keep the temperature 2h.
(3) 100 parts of V is weighed2O5-WO3/TiO2, 0.5 part of additional waterglass, 100 parts of water are then uniform through ball milling mixing
After crossing 200 meshes, the ceramic membrane prepared is immersed in the slurry mixed by 36h；Dipping takes out after 20 seconds, is then placed on baking
Dry 3h or more at 50 DEG C of constant temperature in case, then it is warming up to 100 DEG C of dry 2h or more.
Embodiment 2；A kind of petrochemical industry exhaust-gas treatment ceramic membrane materials prepare that the specific method is as follows:
(1) 1% sodium hydroxide solution of supporter is impregnated 5 hours, with distilled water flushing it is clean after, it is spare after dry.
(2) proportion of the filtering high-temperature flue gas with membrane material each raw material component by weight are as follows:
| Corundum | Mullite fiber | Silicon powder | Suzhou soil | Barium carbonate |
| 65 | 25 | 6 | 2 | 2 |
Then 1 part of additional sodium cellulose glycolate, 100 parts of water will pass through after crossing 80 meshes through the uniform 6h of ball milling mixing
Pretreated supporter immerses in the slurry mixed；Dipping takes out after 40 seconds, is then placed in baking oven at 50 DEG C of constant temperature dry
3h or more, then 100 DEG C of dry 2h or more are warming up to, it is packed into kiln furnitures, is warming up to 500 DEG C (about with 1.5 DEG C/min in kiln
6h), then with 2 DEG C/min 1250 DEG C are warming up to, keep the temperature 3h.
(3) 100 parts of V is weighed2O5-WO3/TiO2, 1 part of additional waterglass, 200 parts of water are then uniform through ball milling mixing
After crossing 200 meshes, the ceramic membrane prepared is immersed in the slurry mixed by 48h；Dipping takes out after 40 seconds, is then placed on baking
Dry 3h or more at 50 DEG C of constant temperature in case, then it is warming up to 100 DEG C of dry 2h or more.
Embodiment 3 ~ 8: referring to embodiment 1 or 2, preparation method is constant, changes composition quantities and each parameter, and following table is made:
。
Claims (5)
1. a kind of filtering high-temperature flue gas ceramic membrane, it is characterised in that including following component, the weight proportion of each component are as follows: corundum
5 μm -100 μm of 60-75 parts of partial size
100 μm -300 μm of mullite fiber length, 1-10 μm of 10-30 parts of diameter
2-10 parts of 200 mesh of silicon powder
1-10 parts of 200 mesh of Suzhou soil
1-2 parts of 300 mesh of barium carbonate
Above-mentioned component weight is 100 parts, additional as benchmark:
0.5-2 parts of sodium cellulose glycolate technical grade
50-100 parts of water；
By each component of filtering high-temperature flue gas film ball milling mixing according to the ratio, supporter is immersed to the filtering high-temperature flue gas mixed
With in film slurry, after taking-up, drying firing is formed the ceramic membrane with highly-breathable；
The ceramic membrane of highly-breathable is immersed in catalyst pulp and is coated, drying is taken out, obtains with desulphurization denitration function
Can ceramic membrane, catalyst pulp each component ball milling mixing according to the ratio, the weight proportion of the catalyst pulp component are as follows:
V2O5-WO3(MoO3)/TiO2500 100 parts of mesh
Above-mentioned component weight is 100 parts, additional as benchmark:
0.1-2 parts of waterglass technical grade
50-300 parts of water.
2. a kind of filtering high-temperature flue gas ceramic membrane according to claim 1, it is characterised in that the pretreatment side of supporter
Method are as follows: supporter is first used the sodium hydroxide solution of 1-5% concentration impregnate 3-6 hours, after rinsing well, then dries and is down to room temperature
It is spare.
3. a kind of filtering high-temperature flue gas ceramic membrane according to claim 1, it is characterised in that filtering high-temperature flue gas film
Each component ball milling mixing method according to the ratio are as follows: use ball milling, incorporation time 5-8h crosses 80 meshes.
4. a kind of filtering high-temperature flue gas ceramic membrane according to claim 1, it is characterised in that supporter is in high-temperature flue gas
Then filtering is placed in baking oven at 50 DEG C of constant temperature dry 3h or more with taking out after film impregnating slurry 10-40 seconds, then be warming up to 100
DEG C dry 2h or more, is packed into kiln furnitures, is warming up to 500 DEG C in kiln with 1.5 DEG C/min, be 4 ~ 6h by the time, then with 2
DEG C/min is warming up to 1200 DEG C ~ 1250 DEG C, it is 6h ~ 7.5h, 1 ~ 3h of heat preservation by the time.
5. a kind of filtering high-temperature flue gas ceramic membrane according to claim 1, it is characterised in that catalyst components mixing
Slurry is prepared into using ball milling, incorporation time 24-48h after crossing 200 meshes, will immerse mixing by the ceramic membrane prepared
In good slurry；Dipping takes out after 20-40 seconds, is then placed in baking oven at 50 DEG C of constant temperature dry 3h or more, then be warming up to 100 DEG C
Dry 2h or more.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010187A (en) * | 2010-10-01 | 2011-04-13 | 江苏省陶瓷研究所有限公司 | Ceramic membrane for porous ceramic filter pipe and modified preparation method thereof |
| CN102008857A (en) * | 2010-09-21 | 2011-04-13 | 广州格瑞特材料科技有限公司 | Filter element for filtering high-temperature dust and purifying gas as well as preparation method and application thereof |
| CN105315000A (en) * | 2015-11-13 | 2016-02-10 | 山东工业陶瓷研究设计院有限公司 | Dust-removal denitration integrated ceramic filtering material and preparation method thereof |
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| CN1081395A (en) * | 1992-07-15 | 1994-02-02 | 国家建筑材料工业局山东工业陶瓷研究设计院 | Gradient ceramics with ceramic fibrous membrane fenestrata |
| CN101417215A (en) * | 2008-11-24 | 2009-04-29 | 伍协 | Ordered porous ceramic film and preparation method thereof |
| CN102965848B (en) * | 2012-11-15 | 2016-06-22 | 广州市香港科大霍英东研究院 | A kind of nano-porous ceramic film and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102008857A (en) * | 2010-09-21 | 2011-04-13 | 广州格瑞特材料科技有限公司 | Filter element for filtering high-temperature dust and purifying gas as well as preparation method and application thereof |
| CN102010187A (en) * | 2010-10-01 | 2011-04-13 | 江苏省陶瓷研究所有限公司 | Ceramic membrane for porous ceramic filter pipe and modified preparation method thereof |
| CN105315000A (en) * | 2015-11-13 | 2016-02-10 | 山东工业陶瓷研究设计院有限公司 | Dust-removal denitration integrated ceramic filtering material and preparation method thereof |
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