CN202724874U - Heatproof fiber filter felt with filtration gradient - Google Patents
Heatproof fiber filter felt with filtration gradient Download PDFInfo
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- CN202724874U CN202724874U CN 201220297183 CN201220297183U CN202724874U CN 202724874 U CN202724874 U CN 202724874U CN 201220297183 CN201220297183 CN 201220297183 CN 201220297183 U CN201220297183 U CN 201220297183U CN 202724874 U CN202724874 U CN 202724874U
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- fiber
- filter felt
- heatproof
- fiber filter
- dust
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Abstract
The utility model discloses heatproof fiber filter felt with filtration gradient. The filter felt comprises a first Kevlar fiber dust greeting layer, a second Kevlar fiber dust greeting layer and a Kevlar fiber filament base cloth layer from top to bottom in sequence. The heatproof fiber filter felt is mainly applied to flue gas dust removal of waste incineration and non-ferrous metal smelting, using temperature reaches above 240 DEG C, filtration precision of the fiber filter is improved, and dust emission concentration in atmosphere is reduced. The heatproof fiber filter felt with the filtration gradient can be used for 4 years under the 240-260 DEG C waste incineration flue gas dust removal and non-ferrous metal smelting flue gas dust removal working conditions, the dust emission concentration reaches below 10 mg/ Nm 3, removal efficiency to particles of above 10 micrometers reaches to 99.999 %, and the heatproof fiber filter felt with the filtration gradient has excellent environmental protection benefits and economic benefits.
Description
Technical field
The utility model relates to a kind of high-temperature dust filter felt, in particular a kind of heat resistance fiber filter felt with filtering gradient.
Background technology
In the high temperature fume dust removal field, especially for the flue gas ash removal field of garbage incinerating power plant and non-ferrous metal metallurgy, dust size is thinner at present, easily sees through filtrate, and dust emission concentration is higher.
Kevlar (Kevlar) is that the DuPont of Du Pont is used for the trade mark on its aromatic polyamide fibre (being called for short " Fanglun l414 ") product, and this fiber is invented by the DuPont of Du Pont the sixties.Kevlar is with at present different at the used aramid fiber of filtering material industry, and it is high that it has heat resistance, up to 240 ℃, and Heat stability is good, anti-complications, the advantage such as corrosion-resistant, high-strength.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of heat resistance fiber filter felt with filtering gradient is provided, and realizes having the filtration of gradient by the aperture of each filter course.
The utility model is achieved through the following technical solutions, and the utility model comprises successively that from top to bottom the first Kafra fiber is met knoisphere, the second Kafra fiber is met knoisphere and Kev stretched filament base cloth layer.
The pore size filter that described the first Kafra fiber is met knoisphere is met the pore size filter of knoisphere less than the second Kafra fiber.
The utility model has the following advantages compared to existing technology: filter felt of the present utility model is mainly used in the flue gas ash removal of waste incineration and non-ferrous metal metallurgy, serviceability temperature reaches more than 240 ℃, improve the filtering accuracy of filter felt, reduce the concentration of emission of dust in the atmosphere; Used 4 years under the working condition of 240-260 ℃ flue gas of refuse burning dedusting, non-ferrous metal metallurgy flue gas ash removal, dust emission concentration reaches 10 mg/Nm
3Below, particle removal efficiency more than 10 microns is reached 99.999%, have good environmental benefit and economic benefit.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
The below elaborates to embodiment of the present utility model; the present embodiment is implemented under take technical solutions of the utility model as prerequisite; provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
As shown in Figure 1, the present embodiment comprises successively that from top to bottom the first Kafra fiber is met knoisphere 1, the second Kafra fiber is met knoisphere 2 and Kev stretched filament base cloth layer 3.
The pore size filter that described the first Kafra fiber is met knoisphere 1 is met the pore size filter of knoisphere 2 less than the second Kafra fiber.
In the present embodiment, the grammes per square metre that the first Kafra fiber is met knoisphere 1 is 150-200 g/m
2The grammes per square metre that the second Kafra fiber is met knoisphere 2 is 100-150 g/m
2The grammes per square metre of Kev stretched filament base cloth layer 3 is 120-150 g/m
2Three layers of gross weight are 500-550g/m
2
The preparation process of the present embodiment is as follows:
(1) at first the first Kafra fiber is met the ultra-fine Kafra fiber of 1D*60mm of knoisphere 1 by shredding, mixing, combing, and the second Kafra fiber is met the Kafra fiber of the 2D*60mm of knoisphere 2 and is also passed through shredding, mixing, combing, then each self-forming web carries out cross lapping with Kev stretched filament base cloth layer 3, forms the felt material;
(2) three-decker is had a shave to thorn through 1 pre-needling, 4 main acupunctures, 1 crosspointer plate dystopy, and punch frequency is respectively 500 times/minutes, and 550 times/minutes, 600 times/minutes, 650 times/minutes, 700 times/minutes, 900 times/minutes, 850 times/minutes; Depth of needling is respectively 5mm, 6mm, 8mm, 8mm, 8mm, 6mm, 5mm;
(3) the felt material after the acupuncture is through press polish, 300 ℃ of upper roll temperatures, 300 ℃ of lower roll temperatures; Singe the speed of singing 5m/min; Thermal finalization, 280 ℃ of lower 5min of heat setting temperature.
The stress that in use causes owing to temperature in order to eliminate filter felt, the dimensional stability of assurance filter felt.Use the PTFE(polytetrafluoroethylene (PTFE)) the compound prescription dipping, compound prescription is comprised of PTFE emulsion, water, other chemical assistant, and wherein PTFE emulsion solid content is 60%, and the PTFE percentage by weight is 10% in chemical solvent.Improve filtering material smoothness of the surface, corrosion resistance, dimensional stability.
Claims (2)
1. the heat resistance fiber filter felt with the filtration gradient is characterized in that, comprises successively that from top to bottom the first Kafra fiber is met knoisphere (1), the second Kafra fiber is met knoisphere (2) and Kev stretched filament base cloth layer (3).
2. the heat resistance fiber filter felt with filtering gradient according to claim 1 is characterized in that: the pore size filter that described the first Kafra fiber is met knoisphere (1) is met the pore size filter of knoisphere (2) less than the second Kafra fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220297183 CN202724874U (en) | 2012-06-21 | 2012-06-21 | Heatproof fiber filter felt with filtration gradient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220297183 CN202724874U (en) | 2012-06-21 | 2012-06-21 | Heatproof fiber filter felt with filtration gradient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202724874U true CN202724874U (en) | 2013-02-13 |
Family
ID=47650627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220297183 Expired - Fee Related CN202724874U (en) | 2012-06-21 | 2012-06-21 | Heatproof fiber filter felt with filtration gradient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202724874U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110090492A (en) * | 2019-04-15 | 2019-08-06 | 嘉兴职业技术学院 | The preparation method of gradient pore structured SS/PVA composite Nano filtrate |
-
2012
- 2012-06-21 CN CN 201220297183 patent/CN202724874U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110090492A (en) * | 2019-04-15 | 2019-08-06 | 嘉兴职业技术学院 | The preparation method of gradient pore structured SS/PVA composite Nano filtrate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230000 Anhui city in Hefei Province, the new station thirty Patentee after: ANHUI YUANCHEN ENVIRONMENT PROTECTION TECHNOLOGY CO., LTD. Address before: 230000 Anhui city in Hefei Province, the new station thirty Patentee before: Anhui YuanChen Environmental Protention Science and Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20160621 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |