CN217746199U - Multifunctional composite filter bag structure - Google Patents
Multifunctional composite filter bag structure Download PDFInfo
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- CN217746199U CN217746199U CN202221113556.8U CN202221113556U CN217746199U CN 217746199 U CN217746199 U CN 217746199U CN 202221113556 U CN202221113556 U CN 202221113556U CN 217746199 U CN217746199 U CN 217746199U
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Abstract
The utility model provides a multi-functional compound filter bag structure, includes one-level filter bag and second grade filter bag that from outer to interior set gradually, and wherein, the one-level filter bag is used for dust removal function, and the second grade filter bag is fold formula, spring or spiral filter bag, and the second grade filter bag is used for the denitration, takes off dioxin, demercuration function, and the second grade filter bag fills into from the one-level filter bag, forms the assembly of double-deck filter bag. The primary filter bag is a high-flux circular filter bag or a folded filter bag, and the bag opening of the secondary filter bag is turned over outwards and fixed at the bag opening of the primary filter bag. The utility model discloses can realize that the fold filter bag possesses the denitration, takes off dioxin, demercuration function, has better filter effect simultaneously.
Description
Technical Field
The utility model relates to a high temperature environmental protection catalysis filters filter material technical field, especially a multi-functional compound filter bag structure.
Background
At present, the air pollution problem brought by modern industry influences the life of people, in particular to high-temperature waste gas generated in industries such as coal-fired power plants, cement industry, waste incineration, steel industry and the like. Therefore, since the 'thirteen-five' plan and the 'fourteen-five' plan, the state makes corresponding continuous strictness of ultra-low emission standards aiming at various industries, and under the new environment-friendly situation, the atmospheric pollution control technology is continuously and rapidly developed, and meanwhile, the diversification and the functionalization of the field of the high-temperature environment-friendly catalytic filter material are promoted.
At present, a plurality of patents propose different pleated filter bag structures, wherein a pleated filter bag with patent number CN201921781993.5 supports the pleated edge of the pleated filter bag more accurately, so as to improve various applicability of the internal support structure of the pleated filter bag, increase the ventilation area of the pleated edge of the pleated filter bag, and further improve the filtration and ventilation performance of the pleated filter bag. And a special tectorial membrane PPS fold sack of power plant that patent number is CN202121261512.5 provides the elastic cord of different elasticity degrees for the fold sack has different constraint ability, so that increase the toughness and the bearing capacity effect of sack body. For another example, the novel efficient dust removal pleated cloth bag with the patent number of CN201821095967.2 can greatly improve the air volume of the existing dust remover through the novel pleated filter bag to increase the productivity, and the easy-filtering pleated cloth bag is used for improving the existing dust remover, so that the best improvement scheme of the production efficiency and the capacity of a dust removal system is improved.
However, the above patents all change the structure of the pleated filter bag, simply improve the bearing capacity and ventilation performance of the filter bag, and fail to realize the functional structure of the pleated filter bag for denitration and dioxin removal. In order to realize that the filter bag has the functions of removing pins and dioxin, part of products are added with catalysts on a filter material layer of the filter bag in the prior art to endow the filter material layer with multiple catalytic functions, on one hand, the multiple catalysts loaded on the filter material layer have different catalytic functions, and the catalysts are easy to be poisoned or lose efficacy when smoke is filtered; on the other hand, the retention time of the flue gas in the fiber layer of the filter bag is short, which easily causes the insufficient reaction time of the catalyst, and seriously affects the multifunctional catalysis and dust removal effect of the filter bag. In addition, the common filter bag usually adopts a pulse ash removal mode, so that the activity of a filter bag catalyst is greatly influenced, and the service life of denitration and dioxin removal of the filter bag is greatly shortened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a multi-functional compound filter bag structure, it can realize that the fold filter bag possesses the denitration, takes off the dioxin, has better filter effect simultaneously.
In order to achieve the above purpose, the solution of the present invention is:
the utility model provides a multi-functional compound filter bag structure, includes one-level filter bag and the second grade filter bag that sets gradually from outer to inner, and wherein, the one-level filter bag is used for dust removal function, and the second grade filter bag is fold formula, spring or spiral filter bag, and the second grade filter bag is used for the denitration, takes off dioxin, demercuration function, and the second grade filter bag fills into from the intussuseption of one-level filter bag, forms the assembly of double-deck filter bag.
Furthermore, the primary filter bag is a high-flux circular filter bag or a folded filter bag, and the bag opening of the secondary filter bag is turned over outwards and fixed at the bag opening of the primary filter bag.
Furthermore, the secondary filter bag is of a fold type, continuous concave parts and convex parts are formed on the secondary filter bag, and a plurality of annular fixing belts are arranged on the outer side of the secondary filter bag at intervals for fixing.
Further, the secondary filter bag forms a continuous V-shaped pleat or a wave-shaped pleat, and the concave part or the convex part forms a V shape or an arc shape.
Further, the secondary filter bag is formed by loading the catalyst nano dispersion liquid on the filter material through a loading process and then drying.
Further, the loading process method is a dipping method, a coating method, a spraying method or an in-situ loading method, and the component of the catalytic nano dispersion liquid is V 2 O 5 (WO 3 )、Fe 2 O 3 、CuO、CrOx、MnOx、MgO、MoO 3 、AL 2 O 3 Or NiO, and the loading amount of the filter material catalyst is not less than 100g/m 2 。
Further, the material of the primary filter bag and the secondary filter bag is one of polyphenylene sulfide, polyphenylsulfone sulfoxide, glass fiber, aramid fiber, polytetrafluoroethylene, polyimide, polysulfonamide, basalt or flumetnamese.
Furthermore, a gap is formed between the first-stage filter bag and the second-stage filter bag, and the gap is smaller than 5mm.
After the structure of the oil adding device is adopted, the utility model discloses a one-level filter bag, the second grade filter bag that will have different functions make up into whole, have the interval between the two and form the buffer layer, and second grade catalysis filter bag adopts the fold formula, and greatly increased filter area and filtration catalysis dwell time guarantee to filter more fully and high-efficiently.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
fig. 2 is a schematic longitudinal section of the present invention.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the specific embodiments below.
Combine figure 1, figure 2 to show, the utility model discloses a multi-functional compound filter bag structure, include by outer to interior one-level filter bag 1 and the second grade filter bag 2 that sets gradually, wherein, one-level filter bag 1 is used for dust removal function, and second grade filter bag 2 is used for the denitration, takes off dioxin, demercuration function. During installation, the secondary filter bag 2 can be filled in from the primary filter bag 1, and the bag opening of the secondary filter bag is turned over outwards and fixed at the bag opening of the primary filter bag to form a double-layer filter bag assembly. A gap 3 is formed between the first-stage filter bag 1 and the second-stage filter bag 2 and is smaller than 5mm, air in the gap is used as a buffer layer between the first-stage filter bag and the second-stage filter bag, and the phenomenon that the two filter bags rub against each other to reduce the service life of a product is avoided.
The utility model discloses in, the second grade filter bag can be fold formula, spring or spiral filter bag to but greatly increased filter area, one-level filter bag can be circular filter bag or the fold filter bag of high flux. In the embodiment, the primary filter bag 1 is a circular filter bag, the secondary filter bag 2 is a pleated type, the secondary filter bag 2 forms a continuous concave portion 21 and a convex portion 22, and a plurality of annular fixing bands 4 (only one is shown in the figure) can be arranged at intervals outside the secondary filter bag 2 for fixing. The secondary filter bag 2 is formed into continuous V-shaped or wave-shaped folds, the concave or convex parts are formed into V-shaped or arc-shaped, and the concave part 21 and the convex part 22 are formed into arc-shaped in the embodiment. If the second stage filter bag is spring type, the second stage filter bag can comprise a spring framework arranged in the filter bag body. If the secondary filter bag is spiral, the filter bag body forms a spiral pattern shape, and the filter bag body can be combined and assembled on the elastic framework positioned on the inner side of the secondary filter bag.
Further, in order to enable the secondary filter bag to have a catalytic filtering function and meet the functions of denitration, dioxin removal and mercury removal, the secondary filter bag 2 can be formed by loading the catalyst nano dispersion liquid on the filter material through a loading process and then drying the catalyst nano dispersion liquid. Wherein the loading process method is a dipping method, a coating method, a spraying method or an in-situ loading method, and the component of the catalytic nano dispersion liquid is V 2 O 5 (WO 3 )、Fe 2 O 3 、CuO、CrOx、MnOx、MgO、MoO 3 、AL 2 O 3 Or NiO, and the loading of the filter material catalyst is not less than 100g/m 2 . In addition, the material of the first-stage filter bag and the second-stage filter bag can be one or more of polyphenylene sulfide, polyphenylsulfone sulfoxide, glass fiber, aramid fiber, polytetrafluoroethylene, polyimide, polysulfonamide, basalt or flumetnamese. Because the secondary filter bag forms a fold type, spring type or spiral type filter bag, the filtering area and the filtering catalysis retention time can be greatly increased, and the filtering is more sufficient and efficient.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should be considered as not departing from the scope of the present invention.
Claims (8)
1. The utility model provides a multi-functional compound filter bag structure which characterized in that: including one-level filter bag and the second grade filter bag that sets gradually from outside to inside, wherein, the one-level filter bag is used for dust removal function, and the second grade filter bag is fold formula, spring or spiral filter bag, and the second grade filter bag is used for the denitration, takes off dioxin, demercuration function, and the second grade filter bag fills into from the one-level filter bag, forms the assembly of double-deck filter bag.
2. The multifunctional composite filter bag structure of claim 1, wherein: the primary filter bag is a high-flux circular filter bag or a folded filter bag, and the bag opening of the secondary filter bag is turned over outwards and fixed at the bag opening of the primary filter bag.
3. The multifunctional composite filter bag structure as claimed in claim 1 or 2, wherein: the secondary filter bag is of a fold type, continuous concave parts and convex parts are formed on the secondary filter bag, and a plurality of annular fixing belts are arranged on the outer side of the secondary filter bag at intervals for fixing.
4. The multifunctional composite filter bag structure of claim 3, wherein: the secondary filter bag forms a continuous V-shaped pleat or a wave-shaped pleat, and the concave part or the convex part forms a V shape or an arc shape.
5. The multifunctional composite filter bag structure of claim 1, wherein: the secondary filter bag is formed by loading the catalyst nano dispersion liquid on the filter material through a loading process and then drying.
6. The multifunctional composite filter bag structure of claim 5, wherein: the loading process method is a dipping method, a coating method, a spraying method or an in-situ loading method, and the component of the catalytic nano dispersion liquid is V 2 O 5 (WO 3 )、Fe 2 O 3 、CuO、CrOx、MnOx、MgO、MoO 3 、AL 2 O 3 Or NiO, and the loading of the filter material catalyst is not less than 100g/m 2 。
7. The multifunctional composite filter bag structure of claim 1, wherein: the material of the first-stage filter bag and the second-stage filter bag is one of polyphenylene sulfide, polyphenylsulfone sulfoxide, glass fiber, aramid fiber, polytetrafluoroethylene, polyimide, polysulfonamide, basalt or flumetnamese.
8. The multifunctional composite filter bag structure of claim 1, wherein: a gap is formed between the first-stage filter bag and the second-stage filter bag, and the gap is smaller than 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221113556.8U CN217746199U (en) | 2022-05-10 | 2022-05-10 | Multifunctional composite filter bag structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221113556.8U CN217746199U (en) | 2022-05-10 | 2022-05-10 | Multifunctional composite filter bag structure |
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| Publication Number | Publication Date |
|---|---|
| CN217746199U true CN217746199U (en) | 2022-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221113556.8U Active CN217746199U (en) | 2022-05-10 | 2022-05-10 | Multifunctional composite filter bag structure |
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| CN (1) | CN217746199U (en) |
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- 2022-05-10 CN CN202221113556.8U patent/CN217746199U/en active Active
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