CN108421309A - A kind of filter felt and preparation method for flue-gas dust removal and purification - Google Patents
A kind of filter felt and preparation method for flue-gas dust removal and purification Download PDFInfo
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- CN108421309A CN108421309A CN201810210096.2A CN201810210096A CN108421309A CN 108421309 A CN108421309 A CN 108421309A CN 201810210096 A CN201810210096 A CN 201810210096A CN 108421309 A CN108421309 A CN 108421309A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
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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
- B01D46/0001—Making filtering elements
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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
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
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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
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
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Abstract
The invention discloses a kind of filter felts and preparation method for flue-gas dust removal and purification.The filter felt is made by following steps：A, by carbon nanotube and ammonium metavanadate, titanium dioxide, oxalic acid liquid Hybrid Heating, catalytic activity liquid is made；B, by aerosil felt and catalytic activity liquid mixing pre-burning, pre-burning felt is made；C, hydrotalcite, silica, aluminium oxide, indium oxide, zeolite, natural clay, bonding agent, foaming agent and water are mixed and made into slurry；D, slurry is coated on pre-burning felt surface, up to the filter felt for flue-gas dust removal and purification after calcining.The method has the advantages that：Porcelain is fired by coating slurry on pre-burning felt surface, and microporous membrane is formed after porcelain under foaming agent effect, the micronic dust in flue gas can effectively be filtered, so that filtered flue gas is not interfered by micronic dust, the reduction purification of nitrogen oxides is efficient, effect is good, can effectively realize dedusting denitrification integral Effec-tive Function, and extend the working life of catalyst.
Description
Technical field
The present invention relates to filed of flue gas purification, and in particular to the preparation of filter felt is removed more particularly, to one kind for flue gas
The filter felt and preparation method of dirt purification.
Background technology
Currently, the close phase of the smoke emissioning pollutions such as the formation of haze and coal fired power plant, coal-burned industrial boiler, coal-fired furnace kiln
It closes.Therefore, coal-fired flue-gas contamination control is the important channel for controlling air environmental pollution, and the pollution of the nitrogen oxides generated is
The main cause that acid rain, haze are formed, and an important factor for endanger environmental and human health impacts, therefore to nitrogen oxidation in coal-fired flue-gas
The purified treatment of object is extremely urgent.
Have a large amount of technology applications to the contamination control of nitrogen oxides at present, is broadly divided into two classes：Control in stove（Burning
Control technology）With control technology outside stove（Burn post-control technology）.Control includes mainly low nitrogen oxide burning technology in stove（It is low
Excess air burner, Gases Recirculation, fuel reburning, fractional combustion）It is fired with being catalyzed in SNCR gas denitrifying technologies and stove
Burn etc.；Burning post-control technology include：Wet denitration, SCR, electron beam denitration etc..Since denitration in the stove can at most provide 50%
~60% denitration efficiency, therefore increasingly stringent discharge standard cannot be met, therefore, denitration at present is controlled after mostly using burning
System, mainstream technology mostly use selective catalytic reduction to reduce the pollution of nitrogen oxides.And it is catalyzed the material and knot of reduction
Structure research becomes key.
Number of patent application 201510789500.2 discloses a kind of solid catalyst for coal-fired flue gas denitration, described to urge
Agent is made of vanadic anhydride, ferroso-ferric oxide and titanium dioxide.It, should compared with the catalyst of existing selective reduction denitrogenation
The catalyst Deitrogenatin of invention is efficient, and resourceful, and adaptability is good, and nitrogen extrusion rate can reach 95% or more.
Number of patent application 201510969485.X discloses a kind of coal-fired flue gas denitration demercuration catalyst and preparation method thereof
And application, catalyst is mainly using attapulgite as carrier, by loading molybdenum trioxide and mesopore metal oxide TOX institutes shape
At composite catalyst.Compared with the existing technology, invention proposition will be carried on attapulgite using modified SCR catalyst and will
Be used for coal-fired flue gas denitration demercuration；Cheap convex stick soil is used to replace expensive activated carbon, titanium dioxide etc. as catalyst
Carrier；The catalyst is efficient in low-temperature region denitration demercuration；SCR denitration equipment, drop can be utilized when the catalyst denitration demercuration
Low equipment cost.
Number of patent application 201510789500.2 discloses a kind of coal-fired flue-gas dust-removing and desulfurization denitration combination process system, it
It is high temperature fume dust removal desulphurization denitration and the complete set of equipments of UTILIZATION OF VESIDUAL HEAT IN, rough dedusting is mainly carried out by ceramic multicyclone dust collector and is taken off
Sulphur, ceramic filter membrane filter carry out deep-purification dedusting and denitration, and cold wind is become hot wind by heat exchanger using fume afterheat, into
It is combustion-supporting to enter boiler combustion mouth.The manufacture material of filter mantle is metal and nonmetal oxide, inherently catalyst
Ontology and carrier, in conjunction with refractory ceramics method, sintering prepares catalyst at a certain temperature.It is a kind of high-temperature dust removal desulphurization denitration
Integrated technique especially substitutes electric precipitator and purifies coal gas, and no explosion danger, securely and reliably, investment reduction improves thermal energy profit
With, increase energy-saving effect, design is simple, reasonable for structure, be current energy-saving and emission-reduction, transition and upgrade cross-centennial China make brand
Product.
Number of patent application 201610473625.9 discloses a kind of coal-fired flue gas denitration sulfur method, is filled by following desulfurization
Processing is set, desulfurizer includes desulfuration pipeline, and desulfuration pipeline includes that the preliminary screen pipe being sequentially connected, adsorption filtration pipe and light are urged
Change purification pipe, be equipped with successively from gas inlet to exhanst gas outlet on the inner wall of preliminary screen pipe liquor natrii hypochloritis's atomizer,
Oxygen nozzle and ammonium persulfate solution atomizer, liquor natrii hypochloritis's atomizer are parallel to the inner wall of the preliminary screen pipe
Installation, oxygen nozzle are installed diagonally downward, and the inner wall with preliminary screen pipe is in 35 ~ 55 ° of angle, ammonium persulfate solution atomization spray
Head is installed perpendicular to the inner wall of the preliminary screen pipe, and the plate body of the honeycomb hole of perforation is equipped in adsorption filtration pipe.The invention exists
Denitration process can be completed while desulfurization, and the extrusion rate of sulfur dioxide can reach 99% or more, the extrusion rate of oxynitrides
It can reach 90% or more.
It can be seen that being applied to the reducing agent of purification of nitrogen oxides in the prior art, its catalysis efficiency is studied mostly, and is neglected
Depending on micro dust, in practice, micro dust itself pollutant that still haze is not formed, and it carries a large amount of nitrogen oxidation
Object, and be tightly combined, catalyst is catalyzed reduction effect to it and is not obvious, and this kind of micro dust once enters air, harmfulness
Than simple nitrogen oxides and dust bigger, the problems such as prior art cannot achieve dedusting denitrification integral.
Invention content
Effectively to solve above-mentioned technical problem, the present invention proposes a kind of filter felt for flue-gas dust removal and purification and preparation
Method can effectively filter the micronic dust in flue gas, and filtered flue gas is not interfered by micronic dust, fast in the internal layer of supported active agent
Fast nitrogen oxides reduction realizes dedusting denitrification integral Effec-tive Function, and extends the working life of catalyst.
The specific technical solution of the present invention is as follows：
A kind of preparation method of filter felt for flue-gas dust removal and purification, the filter felt are by the slurry containing bonding agent and foaming agent
Material is coated on the surface of the aerosil pre-burning felt of load ammonium metavanadate, is made through calcining, specific preparation process
For：
A, carbon nanotube is mixed with ammonium metavanadate, titanium dioxide, oxalic acid liquid, is heated, catalytic activity liquid is made；
B, aerosil felt is immersed in the catalytic activity liquid of step a, simultaneously pre-burning is taken out after 20 ~ 30min, thickness is made
For the pre-burning felt of 2 ~ 3mm；
C, by hydrotalcite, silica, aluminium oxide, indium oxide, zeolite, natural clay and water mixed grinding, and be added bonding agent,
Slurry is made in foaming agent；
D, the slurry of step c is coated on to the pre-burning felt surface of step b, further calcined, slurry porcelainization is made to form micropore ceramics
The filter felt for flue-gas dust removal and purification is made in film.
Preferably, in the step a, heating temperature is 40 ~ 50 DEG C, and soaking time is 10 ~ 20min.
Preferably, in the step a, 22 ~ 28 parts by weight of carbon nanotube, 4 ~ 6 parts by weight of ammonium metavanadate, titanium dioxide 10 ~ 15
Parts by weight, 51 ~ 64 parts by weight of oxalic acid liquid.
Preferably, in the step b, 20 ~ 30 parts by weight of aerosil felt, 70 ~ 80 parts by weight of catalytic activity liquid.
Preferably, in the step b, calcined temperature is 200 ~ 300 DEG C, and temperature is 1 ~ 2h.
Preferably, in the step c, bonding agent is at least one in epoxy resin adhesive or phenolic resin binder
Kind.
Preferably, in the step c, foaming agent is at least one of saleratus, sodium bicarbonate or calcium bicarbonate.
Preferably, in the step c, 10 ~ 12 parts by weight of hydrotalcite, 3 ~ 16 parts by weight of silica 1,4 ~ 6 weight of aluminium oxide
Measure part, 2 ~ 4 parts by weight of indium oxide, 2 ~ 4 parts by weight of zeolite, 20 ~ 25 parts by weight of natural clay, 29 ~ 47 parts by weight of water, bonding agent 1 ~
2 parts by weight, 1 ~ 2 parts by weight of foaming agent.
Preferably, in the step d, calcination temperature is 800 ~ 1000 DEG C, and the time is 3 ~ 5h.
The above of the present invention also proposes a kind of filter felt for flue-gas dust removal and purification, by the way that ammonium metavanadate to be carried on
Carbon nanotube, titanium dioxide, aerosil felt, make the surface area for the vanadic anhydride to be formed fully demonstrate, and stablize
Fixed vanadic anhydride.Further, on pre-burning felt surface, coating slurry fires porcelain, hydrotalcite, silica, aluminium oxide, oxygen
Change indium, zeolite, natural clay and form microporous membrane after porcelain under foaming agent effect, can effectively filter micro- in flue gas
Dirt, filtered flue gas are not interfered by micronic dust, in the quick nitrogen oxides reduction of the internal layer of supported active agent, realize dedusting denitration
Integrated high-efficiency is run, and further extends the working life of catalyst.
Beneficial effects of the present invention are：
1. proposing a kind of method forming the filter felt that microporous membrane is made for flue-gas dust removal and purification using porcelainization.
2. the present invention is micro- by being formed in pre-burning felt surface coating slurry firing porcelain, and under foaming agent effect after porcelain
Hole ceramic membrane can effectively filter the micronic dust in flue gas so that filtered flue gas is not interfered by micronic dust, in supported active agent
Internal layer more fast and effeciently nitrogen oxides reduction.
3. the surface area for the vanadic anhydride that the present invention is formed in preparing fully demonstrates and stablizes and fixes, in flue gas
Nitrogen oxides reduction purification effect is good.
4. filter felt produced by the present invention can effectively realize dedusting denitrification integral Effec-tive Function, and extend catalysis
The working life of agent.
Specific implementation mode
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
A, carbon nanotube is mixed with ammonium metavanadate, titanium dioxide, oxalic acid liquid, is heated, catalytic activity liquid is made；
B, aerosil felt is immersed in the catalytic activity liquid of step a, simultaneously pre-burning is taken out after 25min, pre-burning felt is made；
C, by hydrotalcite, silica, aluminium oxide, indium oxide, zeolite, natural clay and water mixed grinding, and be added bonding agent,
Slurry is made in foaming agent；
D, the slurry of step c is coated on to the pre-burning felt surface of step b, further calcine, be made for flue-gas dust removal and purification
Filter felt.
In step b, the average thickness of aerosil felt is 2mm；In step c, bonding agent is adhering with epoxy resin
Agent；In step c, foaming agent is saleratus；
In step a, heating temperature is 45 DEG C, soaking time 15min；In step b, calcined temperature is 250 DEG C, and temperature is
1.5h；In step d, calcination temperature is 900 DEG C, time 4h；
In step a, 25 parts by weight of carbon nanotube, 5 parts by weight of ammonium metavanadate, 13 parts by weight of titanium dioxide, 57 parts by weight of oxalic acid liquid；Step
In rapid b, 25 parts by weight of aerosil felt, 75 parts by weight of catalytic activity liquid；In step c, 11 parts by weight of hydrotalcite, dioxy
15 parts by weight of SiClx, 5 parts by weight of aluminium oxide, 3 parts by weight of indium oxide, 3 parts by weight of zeolite, 23 parts by weight of natural clay, 37 weight of water
Measure part, 1 parts by weight of bonding agent, 2 parts by weight of foaming agent.
Embodiment 2
A, carbon nanotube is mixed with ammonium metavanadate, titanium dioxide, oxalic acid liquid, is heated, catalytic activity liquid is made；
B, aerosil felt is immersed in the catalytic activity liquid of step a, simultaneously pre-burning is taken out after 20min, pre-burning felt is made；
C, by hydrotalcite, silica, aluminium oxide, indium oxide, zeolite, natural clay and water mixed grinding, and be added bonding agent,
Slurry is made in foaming agent；
D, the slurry of step c is coated on to the pre-burning felt surface of step b, further calcine, be made for flue-gas dust removal and purification
Filter felt.
In step b, the average thickness of aerosil felt is 3mm；In step c, bonding agent is bonded for phenolic resin
Agent；In step c, foaming agent is sodium bicarbonate；
In step a, heating temperature is 50 DEG C, soaking time 10min；In step b, calcined temperature is 300 DEG C, temperature 1h；
In step d, calcination temperature is 1000 DEG C, time 3h；
In step a, 28 parts by weight of carbon nanotube, 6 parts by weight of ammonium metavanadate, 15 parts by weight of titanium dioxide, 51 parts by weight of oxalic acid liquid；Step
In rapid b, 30 parts by weight of aerosil felt, 70 parts by weight of catalytic activity liquid；In step c, 12 parts by weight of hydrotalcite, dioxy
16 parts by weight of SiClx, 6 parts by weight of aluminium oxide, 4 parts by weight of indium oxide, 4 parts by weight of zeolite, 25 parts by weight of natural clay, 29 weight of water
Measure part, 2 parts by weight of bonding agent, 2 parts by weight of foaming agent.
Embodiment 3
A, carbon nanotube is mixed with ammonium metavanadate, titanium dioxide, oxalic acid liquid, is heated, catalytic activity liquid is made；
B, aerosil felt is immersed in the catalytic activity liquid of step a, simultaneously pre-burning is taken out after 30min, pre-burning felt is made；
C, by hydrotalcite, silica, aluminium oxide, indium oxide, zeolite, natural clay and water mixed grinding, and be added bonding agent,
Slurry is made in foaming agent；
D, the slurry of step c is coated on to the pre-burning felt surface of step b, further calcine, be made for flue-gas dust removal and purification
Filter felt.
In step b, the average thickness of aerosil felt is 2mm；In step c, bonding agent is adhering with epoxy resin
Agent；In step c, foaming agent is calcium bicarbonate；
In step a, heating temperature is 40 DEG C, soaking time 20min；In step b, calcined temperature is 200 DEG C, temperature 2h；
In step d, calcination temperature is 800 DEG C, time 5h；
In step a, 22 parts by weight of carbon nanotube, 4 parts by weight of ammonium metavanadate, 10 parts by weight of titanium dioxide, 64 parts by weight of oxalic acid liquid；Step
In rapid b, 20 parts by weight of aerosil felt, 80 parts by weight of catalytic activity liquid；In step c, 10 parts by weight of hydrotalcite, dioxy
13 parts by weight of SiClx, 4 parts by weight of aluminium oxide, 2 parts by weight of indium oxide, 2 parts by weight of zeolite, 20 parts by weight of natural clay, 47 weight of water
Measure part, 1 parts by weight of bonding agent, 1 parts by weight of foaming agent.
Embodiment 4
A, carbon nanotube is mixed with ammonium metavanadate, titanium dioxide, oxalic acid liquid, is heated, catalytic activity liquid is made；
B, aerosil felt is immersed in the catalytic activity liquid of step a, simultaneously pre-burning is taken out after 22min, pre-burning felt is made；
C, by hydrotalcite, silica, aluminium oxide, indium oxide, zeolite, natural clay and water mixed grinding, and be added bonding agent,
Slurry is made in foaming agent；
D, the slurry of step c is coated on to the pre-burning felt surface of step b, further calcine, be made for flue-gas dust removal and purification
Filter felt.
In step b, the average thickness of aerosil felt is 3mm；In step c, bonding agent is bonded for phenolic resin
Agent；In step c, foaming agent is saleratus；
In step a, heating temperature is 42 DEG C, soaking time 18min；In step b, calcined temperature is 220 DEG C, temperature 2h；
In step d, calcination temperature is 850 DEG C, time 4.5h；
In step a, 26 parts by weight of carbon nanotube, 6 parts by weight of ammonium metavanadate, 14 parts by weight of titanium dioxide, 54 parts by weight of oxalic acid liquid；Step
In rapid b, 22 parts by weight of aerosil felt, 78 parts by weight of catalytic activity liquid；In step c, 10 parts by weight of hydrotalcite, dioxy
14 parts by weight of SiClx, 4 parts by weight of aluminium oxide, 2 parts by weight of indium oxide, 2 parts by weight of zeolite, 22 parts by weight of natural clay, 44 weight of water
Measure part, 1 parts by weight of bonding agent, 1 parts by weight of foaming agent.
Embodiment 5
A, carbon nanotube is mixed with ammonium metavanadate, titanium dioxide, oxalic acid liquid, is heated, catalytic activity liquid is made；
B, aerosil felt is immersed in the catalytic activity liquid of step a, simultaneously pre-burning is taken out after 28min, pre-burning felt is made；
C, by hydrotalcite, silica, aluminium oxide, indium oxide, zeolite, natural clay and water mixed grinding, and be added bonding agent,
Slurry is made in foaming agent；
D, the slurry of step c is coated on to the pre-burning felt surface of step b, further calcine, be made for flue-gas dust removal and purification
Filter felt.
In step b, the average thickness of aerosil felt is 3mm；In step c, bonding agent is adhering with epoxy resin
Agent；In step c, foaming agent is sodium bicarbonate；
In step a, heating temperature is 48 DEG C, soaking time 12min；In step b, calcined temperature is 290 DEG C, temperature 1h；
In step d, calcination temperature is 950 DEG C, time 4.5h；
In step a, 27 parts by weight of carbon nanotube, 5 parts by weight of ammonium metavanadate, 14 parts by weight of titanium dioxide, 54 parts by weight of oxalic acid liquid；Step
In rapid b, 27 parts by weight of aerosil felt, 73 parts by weight of catalytic activity liquid；In step c, 12 parts by weight of hydrotalcite, dioxy
15 parts by weight of SiClx, 6 parts by weight of aluminium oxide, 3 parts by weight of indium oxide, 3 parts by weight of zeolite, 24 parts by weight of natural clay, 34 weight of water
Measure part, 2 parts by weight of bonding agent, 1 parts by weight of foaming agent.
Comparative example 1
A, carbon nanotube is mixed with ammonium metavanadate, titanium dioxide, oxalic acid liquid, is heated, catalytic activity liquid is made；
B, skeleton steel wire is immersed in the catalytic activity liquid of step a, simultaneously pre-burning is taken out after 28min, pre-burning felt is made；
C, by hydrotalcite, silica, aluminium oxide, indium oxide, zeolite, natural clay and water mixed grinding, and be added bonding agent,
Slurry is made；
D, the slurry of step c is coated on to the pre-burning felt surface of step b, further calcine, be made for flue-gas dust removal and purification
Filter felt.
In step b, skeleton steel wire average thickness is 3mm；In step c, bonding agent is epoxy resin adhesive；Step c
In, foaming agent is sodium bicarbonate；
In step a, heating temperature is 48 DEG C, soaking time 12min；In step b, calcined temperature is 290 DEG C, temperature 1h；
In step d, calcination temperature is 950 DEG C, time 4.5h；
In step a, 27 parts by weight of carbon nanotube, 5 parts by weight of ammonium metavanadate, 14 parts by weight of titanium dioxide, 54 parts by weight of oxalic acid liquid；Step
In rapid b, 27 parts by weight of pre-burning felt, 73 parts by weight of catalytic activity liquid；In step c, 12 parts by weight of hydrotalcite, 5 weight of silica 1
Part, 6 parts by weight of aluminium oxide, 3 parts by weight of indium oxide, 3 parts by weight of zeolite, 24 parts by weight of natural clay, 34 parts by weight of water, bonding agent
2 parts by weight, 1 parts by weight of foaming agent；
Filter felt made from above-described embodiment 1 ~ 5 and comparative example 1 tests micro mist dust concentration and denitration efficiency, tests the side of characterization
Method or condition are as follows：
Micro mist dust concentration：At 25 DEG C, fume sample is passed through to the dust removal and filtration system for having installed the filter felt, carries out micro dust
Filtration test, flue gas flow rate 0.5m/s measure the concentration of micro dust in the front and back flue gas of filtering, table using dust detector respectively
Levy the filter effect to micro dust.
Denitration efficiency：At 25 DEG C, fume sample is passed through to the denitrating system for having installed the filter felt, flue gas flow rate is
0.5m/s measures the nitrous oxides concentration C before denitration using nitrogen oxides detector1With the nitrous oxides concentration C after denitration2, press
According to formula η=（C1-C2）/ C1 × 100% calculates denitration efficiency, characterizes the removal effect to nitrogen oxides.
The results are shown in Table 1.
Table 1：
Claims (10)
1. a kind of preparation method of filter felt for flue-gas dust removal and purification, which is characterized in that the filter felt is by containing bonding
The slurry of agent and foaming agent is coated on the surface of the aerosil pre-burning felt of load ammonium metavanadate, is made through calcining,
Specifically preparation process is：
A, carbon nanotube is mixed with ammonium metavanadate, titanium dioxide, oxalic acid liquid, is heated, catalytic activity liquid is made；
B, aerosil felt is immersed in the catalytic activity liquid of step a, simultaneously pre-burning is taken out after 20 ~ 30min, thickness is made
For the pre-burning felt of 2 ~ 3mm；
C, by hydrotalcite, silica, aluminium oxide, indium oxide, zeolite, natural clay and water mixed grinding, and be added bonding agent,
Slurry is made in foaming agent；
D, the slurry of step c is coated on to the pre-burning felt surface of step b, further calcined, slurry porcelainization is made to form micropore ceramics
The filter felt for flue-gas dust removal and purification is made in film.
2. the preparation method of a kind of filter felt for flue-gas dust removal and purification according to claim 1, it is characterised in that：It is described
In step a, heating temperature is 40 ~ 50 DEG C, and soaking time is 10 ~ 20min.
3. the preparation method of a kind of filter felt for flue-gas dust removal and purification according to claim 1, it is characterised in that：It is described
In step a, 22 ~ 28 parts by weight of carbon nanotube, 4 ~ 6 parts by weight of ammonium metavanadate, 10 ~ 15 parts by weight of titanium dioxide, 51 ~ 64 weight of oxalic acid liquid
Measure part.
4. the preparation method of a kind of filter felt for flue-gas dust removal and purification according to claim 1, it is characterised in that：It is described
In step b, 20 ~ 30 parts by weight of aerosil felt, 70 ~ 80 parts by weight of catalytic activity liquid.
5. the preparation method of a kind of filter felt for flue-gas dust removal and purification according to claim 1, it is characterised in that：It is described
In step b, calcined temperature is 200 ~ 300 DEG C, and temperature is 1 ~ 2h.
6. the preparation method of a kind of filter felt for flue-gas dust removal and purification according to claim 1, it is characterised in that：It is described
In step c, bonding agent is at least one of epoxy resin adhesive or phenolic resin binder.
7. the preparation method of a kind of filter felt for flue-gas dust removal and purification according to claim 1, it is characterised in that：It is described
In step c, foaming agent is at least one of saleratus, sodium bicarbonate or calcium bicarbonate.
8. the preparation method of a kind of filter felt for flue-gas dust removal and purification according to claim 1, it is characterised in that：It is described
In step c, 10 ~ 12 parts by weight of hydrotalcite, 3 ~ 16 parts by weight of silica 1,4 ~ 6 parts by weight of aluminium oxide, 2 ~ 4 weight of indium oxide
Part, 2 ~ 4 parts by weight of zeolite, 20 ~ 25 parts by weight of natural clay, 29 ~ 47 parts by weight of water, 1 ~ 2 parts by weight of bonding agent, foaming agent 1 ~ 2
Parts by weight.
9. a kind of filter felt and preparation method for flue-gas dust removal and purification according to claim 1, it is characterised in that：It is described
In step d, calcination temperature is 800 ~ 1000 DEG C, and the time is 3 ~ 5h.
10. a kind of filter felt for flue-gas dust removal and purification that any one of claim 1 ~ 9 preparation method is prepared.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109091956A (en) * | 2018-10-15 | 2018-12-28 | 安徽元琛环保科技股份有限公司 | A kind of preparation method of the dedusting denitrification integral filtrate based on ceramic fibre |
| CN111229035A (en) * | 2020-01-21 | 2020-06-05 | 鞍钢股份有限公司 | Denitration method suitable for sintering flue gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109091956A (en) * | 2018-10-15 | 2018-12-28 | 安徽元琛环保科技股份有限公司 | A kind of preparation method of the dedusting denitrification integral filtrate based on ceramic fibre |
| CN111229035A (en) * | 2020-01-21 | 2020-06-05 | 鞍钢股份有限公司 | Denitration method suitable for sintering flue gas |
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Application publication date: 20180821 |