CN109589712A - A kind of ellipse basalt fibre chimney filter and preparation method - Google Patents
A kind of ellipse basalt fibre chimney filter and preparation method Download PDFInfo
- Publication number
- CN109589712A CN109589712A CN201910031924.0A CN201910031924A CN109589712A CN 109589712 A CN109589712 A CN 109589712A CN 201910031924 A CN201910031924 A CN 201910031924A CN 109589712 A CN109589712 A CN 109589712A
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- chimney filter
- ellipse
- basalt fibre
- rock wool
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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
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
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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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- 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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- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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Abstract
The invention discloses a kind of oval basalt fibre chimney filters and preparation method thereof.The chimney filter uses rock wool and inorganic binder for raw material, and the chimney filter includes chimney filter wall and chimney filter bottom, and the outer rim at chimney filter wall upper opening is equipped with tilting bayonet；The cross section of the chimney filter is ellipse.The preparation method comprises the following steps: after rock wool is chopped, the ball milling in ball grinder；The rock wool staple fiber of milled is filtered, the slag ball and field trash of bottom is removed, obtains fiber dust；Fiber dust is added in inorganic binder and aqueous solution, slurry is prepared；Slurry is injected into oval mold, and rapid filtration under suction molding excludes moisture, then will filter molding wet base demoulding drying and obtain oval basalt fibre chimney filter through low-temperature treatment.The present invention increases dedusting area using ellipse, improves efficiency of dust collection；It in chimney filter end, is designed using tilting bayonet, alleviates top bayonet position in the damage at the ear position of pulse cleaning process.Improve the service life of rock wool chimney filter.
Description
Technical field
The present invention relates to a kind of factory flue gas ash removal rock wool chimney filters, belong to fume treatment filter plant technical field.
Background technique
With energy-saving and environment-friendly demand, the flue gas of industrial discharge is required at present higher and higher.Not only to solid dust, and
And in flue gas sulfide and nitrous oxides concentration have and specific limit index.In the flue dust for requiring discharge such as power plant,
GB13223-2011 new standard provides that soot emissions are lower than 30mg/m in newly-built coal-burning power plant3, SO2Emission limit be 100mg/
m3, NOxEmission limit be 100mg/m3.Other industry such as metallurgy, chemical industry, building materials, glass, cement industries also have similar
It is required that.Therefore desulphurization denitration dust collecting process is all essential.Since conventional dust settling pocket cannot bear high temperature, at present
After conventional way is direct desulfurization denitration at high temperature, then it is dusted.Work as in all factors for causing SCR catalyst to inactivate
In, in flue gas dust stratification be it is most complicated, influence it is maximum one.If the micropore of catalyst is blocked by soot dust granule, catalyst
Adsorption is gradually lost, and leads to catalyst inactivation, therefore during desulphurization denitration, and the flue dust in flue gas is to desulphurization denitration
Catalyst have large effect, reduce its catalytic effect.So if can be dusted before desulphurization denitration, it will significantly
The efficiency of desulphurization denitration is improved, and reduces the usage amount of desulphurization denitration catalyst, reduces the environmental protection pressure of enterprise.
Conventional dedusting utilizes fiber filter bag, and high temperature resistance is poor, and durability is poor, and especially sealing is sewed up mouth and is in just
It is easily damaged during pressure blowback.
The patent of Publication No. CN 105107310B describes a kind of catalytic ceramics chimney filter and preparation method, the invention are explained
A kind of catalytic ceramics chimney filter is stated, which is characterized in that including ceramic filter tube matrix, and on ceramic filter tube matrix successively
The catalytic active component layer and seperation film of coating.
And a kind of ceramic fibre chimney filter structure of improvement of CN201820025113 description, one kind which mainly describes
The ceramic fibre chimney filter structure of improvement, matrix is ceramic fibre, and ceramic fibre is commonly called as alumina silicate fibre.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of rock wool chimney filter of high-temperature dust removal, and can be removed in high temperature
While dirt, desulphurization denitration catalyst is added, realizes dust-removal and desulfurizing denitrification integral.
To solve the above-mentioned problems, the present invention provides a kind of oval basalt fibre chimney filters, which is characterized in that uses
Rock wool and inorganic binder are raw material, and the chimney filter includes chimney filter wall and chimney filter bottom, and the outer rim at chimney filter wall upper opening is set
There is tilting bayonet；The cross section of the chimney filter is ellipse.
Preferably, the raw material further includes desulphurization denitration catalyst.
It is highly preferred that the catalyst with desulphurization denitration function is for vanadium titanium system's SCR catalyst or without vanadium rare earth titanium-based
Catalyst.
Preferably, the inorganic binder is any one in silica solution, sodium metasilicate, aluminium dihydrogen phosphate and sodium polyphosphate
Kind or several mixtures.
Preferably, the eccentricity of the ellipse is 0~0.5.
The present invention also provides a kind of preparation methods of above-mentioned oval basalt fibre chimney filter, which is characterized in that including
Following steps:
Step 1): after rock wool is chopped, ball milling 2-6 hours in ball grinder；
Step 2): the rock wool staple fiber of milled being filtered, the slag ball and field trash of bottom are removed, obtain length be 30~
300 microns of fiber dust；
Step 3): the fiber dust for being 5~10wt.% of solvent by mass fraction, in addition the inorganic bond of 0.2~1wt.%
Agent is configured in aqueous solution, as needed, the catalysis with desulphurization denitration function of 6~12wt.% is separately added in aqueous solution
Agent is prepared by mixing into uniform slurry under high-speed stirred state；
Step 4): after mud dispersivity is uniform, it is injected into oval mold, rapid filtration under suction molding excludes moisture, then will filter
Molding wet base demoulding drying obtains oval basalt fibre chimney filter through low-temperature treatment.
The present invention chemical stability and high temperature resistance excellent using rock wool, and the alkali metal content pole of rock wool product
It is low, the activity of catalyst is had little effect.It is filtered using slurry, and is designed using bayonet, therefore had good resistance to
Warm nature and good, the long service life toward renaturation.The matrix of ceramic screen pipe in the present invention is the hollow ceramic matrix of equal static pressure production.
The rock wool that the present invention uses is different from ceramic fibre.
Present invention is mainly used for high-temperature dust removals, and can add catalyst and realize desulphurization denitration function integration.This design is adopted
With elliptic design, dedusting area can increase in this way, improve efficiency of dust collection.And in chimney filter end, it is designed using tilting bayonet,
Alleviate top bayonet position in the damage at the ear position of pulse cleaning process.Improve the service life of rock wool chimney filter.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention is prepared for dedusting chimney filter by slurry suction method using rock wool as matrix, has good heat-resisting quantity
And durability performance；
(2) the rock wool chimney filter that the present invention develops is had bigger surface area, can be improved filter using elliptic design, ellipse
The filter efficiency of cylinder；
(3) it is just designed using tilting bayonet, the impact of dedusting and blowback process to bayonet position can be eliminated, reduce short tube
A possibility that, improve chimney filter efficiency of dust collection and service life；
(4) denitrating catalyst can be added in slurry process in the present invention, and realization carries out denitration process after dedusting, greatly
The efficiency for improving denitration greatly, reduces denitration cost.
The present invention is to be used for high-temperature dust removal, and can starch using hair preparation rock wool chimney filter is filtered after crushing by rock wool
Various additives are added in material mixed process, realize the preparation of rock wool chimney filter for various purposes, realize in rock wool fibers chimney filter
Desulphurization denitration catalyst is added and realizes the purpose of the high temperature desulfurizing denitration of flue gas while dedusting.
Detailed description of the invention
Fig. 1 is the main view of oval basalt fibre chimney filter provided by the invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the optical microscope of oval basalt fibre chimney filter provided by the invention.
Specific embodiment
In order to make the present invention more obvious and understandable, hereby with preferred embodiment, and attached drawing is cooperated to be described in detail below.
Chimney filter made from embodiment 1-2 is as shown in Figure 1-3, the chimney filter includes chimney filter wall 2 and chimney filter bottom 3, chimney filter wall 2
Outer rim at upper opening is equipped with tilting bayonet 1；The cross section of the chimney filter is ellipse.
Embodiment 1
A kind of preparation method of ellipse basalt fibre chimney filter, includes the following steps:
After rock wool is chopped first, ball milling filtered the rock wool staple fiber of milled by 2.5 hours in ball grinder, removal
The slag ball and field trash of bottom obtain the fiber dust that length is 10~300 microns, by 0.7 gram of inorganic binder biphosphate
The proportion of aluminium, 8 grams of fiber dusts and 100 grams of water is configured to aqueous solution, 0.2% inorganic binder silica solution is added, in high-speed stirring
It mixes and is prepared by mixing into uniform slurry under state, after mud dispersivity is uniform, be injected into the oval mold that eccentricity is 0.1, fastly
Speed filters molding, excludes moisture, then will filter molding wet base demoulding drying and obtain internal diameter 5.5cm, outer diameter through low-temperature treatment
The basalt fibre combined filtration pipe of 7.5cm.
The present invention can also be added desulphurization denitration catalyst during preparing slurry, preparation have desulphurization denitration and
The rock wool chimney filter of dedusting function.
Embodiment 2
The present invention relates to one kind with oval rock wool chimney filter and preparation method thereof.Include the following steps:
After rock wool is chopped first, ball milling filtered the rock wool staple fiber of milled by 4 hours in ball grinder, removed bottom
The slag ball and field trash in portion, obtaining length is 10~300 microns of fiber dust, by 0.4 gram of inorganic binder silica solution, 7 grams
The proportion of fiber dust and 100 grams of water is configured to aqueous solution, and 6wt.% vanadium titanium catalyst is added in aqueous solution, in high-speed stirring
It mixes and is prepared by mixing into uniform slurry under state, after mud dispersivity is uniform, be injected into the oval mold that eccentricity is 0.5, fastly
Speed filters molding, excludes moisture, then will filter molding wet base demoulding drying and obtain internal diameter 5.5cm, outer diameter through low-temperature treatment
The basalt fibre combined filtration pipe of 7.5cm.
Embodiment 3
The present invention relates to one kind with oval rock wool chimney filter and preparation method thereof.Include the following steps:
After rock wool is chopped first, ball milling filtered the rock wool staple fiber of milled by 4 hours in ball grinder, removed bottom
The slag ball and field trash in portion, obtaining length is 10~300 microns of fiber dust, by 0.7 gram of inorganic binder aluminium dihydrogen phosphate,
The proportion of 10 grams of fiber dusts and 100 grams of water is configured to aqueous solution, and 12wt.% vanadium titanium catalyst is added in aqueous solution,
It is prepared by mixing into uniform slurry under high-speed stirred state, after mud dispersivity is uniform, is injected into the elliptical mode that eccentricity is 0
Tool, rapid filtration under suction molding, excludes moisture, then will filter molding wet base demoulding drying, through low-temperature treatment, obtain internal diameter 5.5cm,
The basalt fibre combined filtration pipe of outer diameter 7.5cm.
The present invention can also be added desulphurization denitration catalyst during preparing slurry, preparation have desulphurization denitration and
The rock wool chimney filter of dedusting function.
Claims (6)
1. a kind of ellipse basalt fibre chimney filter, which is characterized in that use rock wool and inorganic binder for raw material, the chimney filter
Including chimney filter wall (2) and chimney filter bottom (3), the outer rim at chimney filter wall (2) upper opening is equipped with tilting bayonet (1)；The filter
The cross section of pipe is ellipse.
2. ellipse basalt fibre chimney filter as described in claim 1, which is characterized in that the raw material further includes desulphurization denitration
Catalyst.
3. ellipse basalt fibre chimney filter as described in claim 1, which is characterized in that described with desulphurization denitration function
Catalyst is for vanadium titanium system's SCR catalyst or without vanadium rare earth Ti-base catalyst.
4. ellipse basalt fibre chimney filter as described in claim 1, which is characterized in that the inorganic binder is that silicon is molten
Any one or a few mixture in glue, sodium metasilicate, aluminium dihydrogen phosphate and sodium polyphosphate.
5. ellipse basalt fibre chimney filter as described in claim 1, which is characterized in that the eccentricity of the ellipse is 0
~0.5.
6. the preparation method of oval basalt fibre chimney filter described in a kind of claim 1-5 any one, which is characterized in that
The following steps are included:
Step 1): after rock wool is chopped, ball milling 2-6 hours in ball grinder；
Step 2): the rock wool staple fiber of milled being filtered, the slag ball and field trash of bottom are removed, and obtaining length is 30~300 micro-
The fiber dust of rice；
Step 3): the fiber dust for being 5~10wt.% of solvent by mass fraction, in addition the inorganic binder of 0.2~1wt.%,
It is configured in aqueous solution, as needed, the catalyst with desulphurization denitration function of 6~12wt.% is separately added in aqueous solution,
Uniform slurry is prepared by mixing under high-speed stirred state；
Step 4): after mud dispersivity is uniform, it is injected into oval mold, rapid filtration under suction molding excludes moisture, then forms filtering
The demoulding drying of wet base through low-temperature treatment obtain oval basalt fibre chimney filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910031924.0A CN109589712A (en) | 2019-01-14 | 2019-01-14 | A kind of ellipse basalt fibre chimney filter and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910031924.0A CN109589712A (en) | 2019-01-14 | 2019-01-14 | A kind of ellipse basalt fibre chimney filter and preparation method |
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| CN109589712A true CN109589712A (en) | 2019-04-09 |
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| CN201910031924.0A Pending CN109589712A (en) | 2019-01-14 | 2019-01-14 | A kind of ellipse basalt fibre chimney filter and preparation method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252051A (en) * | 2019-05-27 | 2019-09-20 | 山东中琦环保设备制造有限公司 | A kind of boiler smoke dust-removal and desulfurizing denitration and the method for removing dioxin |
| CN112778019A (en) * | 2021-01-05 | 2021-05-11 | 山东工业陶瓷研究设计院有限公司 | Functional ceramic membrane material for high-temperature flue gas purification and preparation method thereof |
| CN113828149A (en) * | 2021-09-01 | 2021-12-24 | 浙江海亮环境材料有限公司 | Coating method for improving denitration efficiency of catalytic fiber filter tube and filter tube |
| CN114602454A (en) * | 2022-03-09 | 2022-06-10 | 青岛华世洁环保科技有限公司 | Integrated ceramic fiber tube SCR denitration catalyst and preparation method and application thereof |
| CN114870834A (en) * | 2022-05-17 | 2022-08-09 | 安徽紫朔环境工程技术有限公司 | Wear-resistant catalyst coating for ceramic filter tube |
| WO2023284158A1 (en) * | 2021-07-12 | 2023-01-19 | 浙江致远环境科技有限公司 | Method for adjusting grouting parameter of slurry for preparing ceramic composite fiber catalytic filter tube, and method and apparatus for preparing a ceramic composite fiber catalytic filter tube |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252051A (en) * | 2019-05-27 | 2019-09-20 | 山东中琦环保设备制造有限公司 | A kind of boiler smoke dust-removal and desulfurizing denitration and the method for removing dioxin |
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| CN112778019A (en) * | 2021-01-05 | 2021-05-11 | 山东工业陶瓷研究设计院有限公司 | Functional ceramic membrane material for high-temperature flue gas purification and preparation method thereof |
| WO2023284158A1 (en) * | 2021-07-12 | 2023-01-19 | 浙江致远环境科技有限公司 | Method for adjusting grouting parameter of slurry for preparing ceramic composite fiber catalytic filter tube, and method and apparatus for preparing a ceramic composite fiber catalytic filter tube |
| CN113828149A (en) * | 2021-09-01 | 2021-12-24 | 浙江海亮环境材料有限公司 | Coating method for improving denitration efficiency of catalytic fiber filter tube and filter tube |
| CN114602454A (en) * | 2022-03-09 | 2022-06-10 | 青岛华世洁环保科技有限公司 | Integrated ceramic fiber tube SCR denitration catalyst and preparation method and application thereof |
| CN114870834A (en) * | 2022-05-17 | 2022-08-09 | 安徽紫朔环境工程技术有限公司 | Wear-resistant catalyst coating for ceramic filter tube |
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Application publication date: 20190409 |