CN207913374U - A kind of composite filtering material for fire coal boiler fume dedusting - Google Patents
A kind of composite filtering material for fire coal boiler fume dedusting Download PDFInfo
- Publication number
- CN207913374U CN207913374U CN201721835167.5U CN201721835167U CN207913374U CN 207913374 U CN207913374 U CN 207913374U CN 201721835167 U CN201721835167 U CN 201721835167U CN 207913374 U CN207913374 U CN 207913374U
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- China
- Prior art keywords
- polyetherimide
- nanowire
- filtering material
- fire coal
- polyimide nano
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Abstract
A kind of composite filtering material for fire coal boiler fume dedusting, it is characterised in that：Including polyimide nano web layer, polyetherimide Nanowire stratum reticulare, carbon nano-tube film layer, polyetherimide Nanowire stratum reticulare, the polyimide nano web layer being sequentially laminated.A diameter of 320nm of polyimide nano-fiber in the polyimide nano web layer.A diameter of 650nm of polyetherimide nanofiber in the polyetherimide Nanowire stratum reticulare.The utility model is high to the filter efficiency of finely ground particles, can improve the treatment effect of denitration desulfurization.
Description
Technical field
The utility model belongs to environmental technology field, specially a kind of composite filtering material for fire coal boiler fume dedusting.
Background technology
The harmful substances such as flue dust, sulfur dioxide, nitrogen oxides contained by fire coal boiler fume are to cause atmosphere pollution, acid rain
With the main contributor of greenhouse effects.Therefore, the task that desulphurization denitration is very urgent is carried out to fire coal boiler fume in China.
Flue gas will be pre-processed first before desulphurization denitration, however, current flue gas is pre-processed to finely ground particles
Filter efficiency is low, so that having influenced the denitration desulfurization effect in later stage.
Invention content
The utility model is in view of the above-mentioned problems, provide a kind of composite filtering material for fire coal boiler fume dedusting, to small
The filter efficiency of particulate matter is high, can improve the treatment effect of denitration desulfurization.
The technical solution of the utility model is：A kind of composite filtering material for fire coal boiler fume dedusting, it is characterised in that：
Including be sequentially laminated polyimide nano web layer, polyetherimide Nanowire stratum reticulare, carbon nano-tube film layer, polyetherimide
Amine Nanowire stratum reticulare, polyimide nano web layer.
A diameter of 320nm of polyimide nano-fiber in the polyimide nano web layer.
A diameter of 650nm of polyetherimide nanofiber in the polyetherimide Nanowire stratum reticulare.
The utility model has the beneficial effects that：The utility model provides a kind of composite filter for fire coal boiler fume dedusting
Material, it is high to the filter efficiency of finely ground particles, the treatment effect of denitration desulfurization can be improved.
Compared with prior art, the utility model have the following advantages that, economic effect：
(1), high temperature resistant：Continuous work temperature is 230 DEG C~260 DEG C, and moment operating temperature is 280 DEG C.
(2), the specific surface area of polyimide nano fibre web is relatively large, this characteristic helps to improve suspended particulate in air
In the deposition probability of polyimide nano web surface and then polyimide nano fibre web filtering material can be improved to small in object
The filter efficiency of grain object.It is fallen in identical filtration pressure, compared with traditional micron order scale fibrous nonwoven material, polyamides is sub-
Amine nanowebs air filting material is more obvious to directly interception effect and the inertial impaction effect of dust particale object, filtering effect
Rate higher.
(3), carbon nano-tube film has minimum diameter and higher specific surface area, the direct interception to dust particale object
Effect and inertial impaction effect are more obvious, and filter efficiency is high.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
In Fig. 1,1. polyimide nano web layers, 2. polyetherimide Nanowire stratum reticulares, 3. carbon nano-tube film layers.
Specific implementation mode
The utility model will be further described below with reference to the accompanying drawings.
As shown in Figure 1, the utility model is a kind of composite filtering material for fire coal boiler fume dedusting, it is characterised in that：
Including be sequentially laminated polyimide nano web layer 1, polyetherimide Nanowire stratum reticulare 2, carbon nano-tube film layer 3, polyethers
Acid imide Nanowire stratum reticulare 2, polyimide nano web layer 1.
A diameter of 320nm of polyimide nano-fiber in the polyimide nano web layer 1.
A diameter of 650nm of polyetherimide nanofiber in the polyetherimide Nanowire stratum reticulare 2.
The utility model is obtained by following process：
(1) first one layer of aluminium foil of smooth cladding on collecting drum before electrostatic spinning, passes through method of electrostatic spinning on aluminium foil
Spinning fibre uniform diameter and the polyamic acid nanowebs of aneroid pearl.Later, aluminium foil and polyamic acid nanowebs is careful
Ground is taken down from collecting drum, cannot be made to polyamic acid nanowebs during removing polyamic acid nanowebs and aluminium foil
At any destruction.Then progress gradient increased temperature processing in high temperature oven is put it into.It is residual that removal in 6 hours is dried first at 80 DEG C
Solvent is stayed, 100 DEG C, 200 DEG C, 300 DEG C and 350 DEG C each 30 minutes gradient increased temperatures processing is then carried out, makes polyamic acid nanometer
Fibre web is converted to polyimides fibre web after gradient thermal cyclization reaction.
(2) polyetherimide nanowebs are spinned again by method of electrostatic spinning.
(3) polyimide nano fibre web is spinned to being surrounded by the collecting drum of aluminium foil, then by polyetherimide Nanowire
Net spinning is on polyimide nano fibre web.
(4) next, carbon nano-tube film is continuously wound up on polyetherimide nanowebs.
(5) next, in addition a strata etherimide nanowebs are spinned on carbon nano-tube film, and outermost
Layer is covered by polyimide nano fibre web.
(6) finally, between the composite filtering material prepared on collecting drum being compressed on two pieces of parallel metal sheets, pressure 1kPa,
Hot-pressing processing 30min at 420 DEG C.In the process, polyetherimide nanowebs are softened melting, and by polyimide nano
Fibre web and carbon nano-tube film are firmly bonded together, and the composite filtering material for fire coal boiler fume purification has been made.
The operation principle of the utility model：
The specific surface area of polyimide nano fibre web is relatively large, this characteristic helps to improve suspended particulate substance in air and exists
The deposition probability of polyimide nano web surface, and then polyimide nano fibre web filtering material can be improved to finely ground particles
Filter efficiency.It is fallen in identical filtration pressure, compared with traditional micron order scale fibrous nonwoven material, polyimides is received
Rice fibre web air filting material is more obvious to directly interception effect and the inertial impaction effect of dust particale object, and filter efficiency is more
It is high.
Polyetherimide be a kind of heat-resistant polymer (glass transition temperature is 215 DEG C, melting temperature is 349 DEG C~
427 DEG C), but it can be softened melting, serve as a kind of fiber binder polyimide nano fibre web and carbon nanotube is thin
Film is bonded together.
Claims (3)
1. a kind of composite filtering material for fire coal boiler fume dedusting, it is characterised in that：Polyimides including being sequentially laminated is received
Rice web layer (1), polyetherimide Nanowire stratum reticulare (2), carbon nano-tube film layer (3), polyetherimide Nanowire stratum reticulare
(2), polyimide nano web layer (1).
2. a kind of composite filtering material for fire coal boiler fume dedusting according to claim 1, it is characterised in that：Described
A diameter of 320nm of polyimide nano-fiber in polyimide nano web layer (1).
3. a kind of composite filtering material for fire coal boiler fume dedusting according to claim 1, it is characterised in that：Described
A diameter of 650nm of polyetherimide nanofiber in polyetherimide Nanowire stratum reticulare (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721835167.5U CN207913374U (en) | 2017-12-25 | 2017-12-25 | A kind of composite filtering material for fire coal boiler fume dedusting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721835167.5U CN207913374U (en) | 2017-12-25 | 2017-12-25 | A kind of composite filtering material for fire coal boiler fume dedusting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207913374U true CN207913374U (en) | 2018-09-28 |
Family
ID=63607290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721835167.5U Expired - Fee Related CN207913374U (en) | 2017-12-25 | 2017-12-25 | A kind of composite filtering material for fire coal boiler fume dedusting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207913374U (en) |
-
2017
- 2017-12-25 CN CN201721835167.5U patent/CN207913374U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180928 Termination date: 20191225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |