Lime nitration dust removal device

Abstract

The utility model discloses a dust removal device for lime nitrification dust, which comprises a plurality of dust collection hoods (1), a bag type dust collector (2), an induced draft fan (3) and an exhaust flue (4), the plurality of dust collection hoods (1) are respectively arranged at positions where lime nitrification dust is easy to generate, and are communicated with the bag type dust collector (2) through a first pipeline (5); the bag type dust collector (2) is communicated with the induced draft fan (3) through a second pipeline (6), and the induced draft fan (3) is communicated with the exhaust flue (4) through a third pipeline (7); the exhaust flue (4) is used for discharging air after lime nitration dust is filtered by the bag type dust collector; the dust collector is used for replacing a multi-tube dust collector structure in the prior art, the dust collection efficiency is effectively improved, and the dust collection energy consumption is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of dust removal, and in particular relates to a lime nitration dust removal device. Background Art

[0002] Since the nitration dust in the lime storehouse is currently too large, it is difficult to achieve the expected dust emission index, which has great harm to the environment and human body. In addition, the power of the multi-tube dust collector fan currently used in the prior art is too large, resulting in increased production costs.

[0003] Therefore, the applicant hopes to seek technical solutions to improve the above technical problems. Summary of the invention

[0004] In view of this, the purpose of the utility model is to provide a lime nitration dust removal device, which is used to replace the multi-tube dust collector structure in the prior art, effectively improves the dust removal efficiency, and saves dust removal energy consumption.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A dust removal device for lime nitration dust comprises a plurality of dust collecting hoods, bag dust collectors, induced draft fans and exhaust flues, wherein:

[0007] The plurality of dust collecting hoods are respectively arranged at positions where lime nitration dust is likely to be generated, and are connected to the bag dust collector through a first pipeline;

[0008] The bag filter is connected to the induced draft fan through a second pipe, and the induced draft fan is connected to the exhaust duct through a third pipe;

[0009] The exhaust flue discharges the air after the lime nitration dust is filtered by the bag filter.

[0010] Preferably, the bag dust collector comprises a filter bag outer cavity and a filter bag inner cavity which are separated and arranged, wherein:

[0011] The outer cavity of the filter bag is communicated with the first pipe, and the inner cavity of the filter bag is communicated with the second pipe. The lime nitration dust sucked by the dust collecting hood passes through the bag dust collector through the first pipe, and the solid dust particles in the lime nitration dust are captured in the outer cavity of the filter bag. The air after the lime nitration dust is filtered by the bag dust collector enters the induced draft fan through the second pipe.

[0012] Preferably, one or more ash hoppers are provided at the lower part of the bag filter, and the solid dust particles captured by the outer cavity of the filter bag fall into the ash hopper after being peeled off.

[0013] Preferably, the ash hopper is V-shaped.

[0014] Preferably, a discharger is installed at the lower end of the ash hopper, and the ash hopper is selectively opened or closed by the discharger.

[0015] Preferably, the unloading adopts pulse compressed air. When the pulse compressed air is turned on, the solid dust particles captured in the outer cavity of the filter bag are peeled off and fall into the ash hopper.

[0016] Preferably, each of the dust collecting hoods is connected to the first pipe through a corresponding plurality of pipe branches, and the first pipe is connected to the outer cavity of the filter bag.

[0017] Preferably, the number of the dust collecting hoods ranges from 3 to 20.

[0018] Preferably, the exhaust duct comprises a clean air chamber and an exhaust duct, wherein the clean air chamber is located at the lower end of the exhaust duct, and dust in the exhaust air is further purified through the clean air chamber.

[0019] Preferably, the inner cavity of the filter bag is connected to the air inlet of the induced draft fan through the second pipe, and the exhaust flue is connected to the air outlet of the induced draft fan through the third pipe. When the induced draft fan is started, a negative pressure state is formed in the inner cavity of the filter bag.

[0020] The present invention provides a plurality of dust collecting hoods in the area where lime nitration dust is likely to be generated, and combines bag dust collectors, induced draft fans and exhaust ducts to replace the multi-tube dust collector structure in the prior art, thereby effectively improving the dust removal efficiency and saving dust removal energy consumption. The present invention has been verified by implementation that the dust concentration in the lime warehouse can be reduced to 10 mg / m 3 , ensuring that it meets emission targets. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a lime nitration dust removal device under an implementation mode of the present application. DETAILED DESCRIPTION

[0022] The utility model embodiment discloses a dust removal device for lime nitration dust, comprising a plurality of dust collecting hoods, a bag dust collector, an induced draft fan and an exhaust flue, wherein the plurality of dust collecting hoods are respectively arranged at positions where lime nitration dust is easily generated, and are connected with the bag dust collector through a first pipe; the bag dust collector is connected with the induced draft fan through a second pipe, and the induced draft fan is connected with the exhaust flue through a third pipe; and the exhaust flue discharges air after the lime nitration dust has been filtered by the bag dust collector.

[0023] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0024] See also Figure 1 As shown, a lime nitration dust removal device comprises a plurality of dust collecting hoods 1, bag dust collectors 2, induced draft fans 3 and exhaust flues 4, wherein the plurality of dust collecting hoods 1 are respectively arranged at positions in the lime warehouse where lime nitration dust is easily generated, and are connected with the bag dust collectors 2 through a first pipe 5; the bag dust collectors 2 are connected with the induced draft fans 3 through a second pipe 6, and the induced draft fans 3 are connected with the exhaust flues 4 through a third pipe 7; the exhaust flues 4 discharge air after the lime nitration dust has been filtered by the bag dust collectors 2.

[0025] Preferably, in this embodiment, the bag dust collector 2 includes a filter bag outer cavity 21 and a filter bag inner cavity 22 which are separated from each other, wherein the filter bag outer cavity 21 is connected to the first pipe 5, and the filter bag inner cavity 22 is connected to the second pipe 6. The lime nitration dust sucked by each dust collecting hood 1 passes through the bag dust collector 2 through the first pipe 5, and the solid dust particles in the lime nitration dust are captured in the filter bag outer cavity 21. The air after the lime nitration dust is filtered by the bag dust collector 2 enters the filter bag inner cavity 22, and enters the induced draft fan 3 through the second pipe 6.

[0026] Preferably, in this embodiment, each dust hood 1 is connected to the first pipe 5 through a corresponding number of pipe branches, and the first pipe 5 is connected to the outer cavity 21 of the filter bag; the number of dust hoods 1 ranges from 3 to 20, and the specific number can be selected according to the actual dust removal needs, and this embodiment does not make a sole limitation; specifically, in this embodiment, the number of dust hoods 1 is 6.

[0027] Preferably, in order to facilitate the collection of solid dust particles, in the present embodiment, one or more ash hoppers 23 (two ash hoppers are specifically used in the present embodiment) are provided at the lower portion of the bag filter 2, and the solid dust particles captured by the outer cavity 21 of the filter bag are peeled off and fall into the ash hopper 23; preferably, in the present embodiment, each ash hopper 23 is V-shaped; further preferably, in order to further improve the collection efficiency of solid dust particles, in the present embodiment, a discharger 24 is installed at the lower end of the ash hopper 23, and the ash hopper is selectively opened or closed by the discharger 24; preferably, the discharger 24 uses pulse compressed air, and when the pulse compressed air is turned on, the solid dust particles captured by the outer cavity 21 of the filter bag are peeled off and fall into the ash hopper 23.

[0028] Preferably, in this embodiment, the inner cavity 22 of the filter bag is connected to the air inlet 31 of the induced draft fan 3 through the second pipe 6, and the exhaust flue 4 is connected to the air outlet 32 ​​of the induced draft fan 3 through the third pipe 7. When the induced draft fan 3 is started, the inner cavity 22 of the filter bag forms a negative pressure state.

[0029] Preferably, in this embodiment, the exhaust duct 4 includes a clean air chamber 41 and an exhaust duct 42 . The clean air chamber 41 is located at the lower end of the exhaust duct 42 , and the dust in the exhaust air is further purified by the clean air chamber 41 .

[0030] The dust collection direction of this embodiment during operation can be specifically referred to Figure 1 As shown by the arrow in the figure; after implementation verification, this embodiment can reduce the dust concentration in the lime warehouse to 10 mg / m 3 , ensuring that it meets emission targets.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A dust removal device for lime nitration dust, characterized in that: The invention comprises a plurality of dust collecting hoods (1), bag dust collectors (2), induced draft fans (3) and exhaust ducts (4), wherein: The plurality of dust collecting hoods (1) are respectively arranged at locations where lime nitration dust is likely to be generated, and are connected to the bag dust collector (2) via a first pipe (5); The bag filter (2) is connected to the induced draft fan (3) via a second pipe (6), and the induced draft fan (3) is connected to the exhaust duct (4) via a third pipe (7); The exhaust flue (4) discharges air after the lime nitration dust has been filtered by the bag filter.

2. The lime nitration dust removal device according to claim 1, characterized in that: The bag dust collector (2) comprises a filter bag outer cavity (21) and a filter bag inner cavity (22) which are separated and arranged, wherein: The outer cavity (21) of the filter bag is in communication with the first pipe (5), and the inner cavity (22) of the filter bag is in communication with the second pipe (6). The lime nitration dust sucked by the dust collecting hood (1) passes through the bag filter (2) via the first pipe (5), and the solid dust particles in the lime nitration dust are captured in the outer cavity (21) of the filter bag. The air after the lime nitration dust is filtered by the bag filter (2) enters the induced draft fan (3) via the second pipe (6).

3. The lime nitration dust removal device according to claim 2, characterized in that: One or more ash hoppers (23) are provided at the lower part of the bag filter (2), and the solid dust particles captured by the outer cavity (21) of the filter bag fall into the ash hopper (23) after being peeled off.

4. The lime nitration dust removal device according to claim 3, characterized in that: The ash hopper (23) is in a V-shape.

5. The lime nitration dust removal device according to claim 3, characterized in that: A discharger (24) is installed at the lower end of the ash hopper (23), and the ash hopper is selectively opened or closed by the discharger (24).

6. The lime nitration dust removal device according to claim 5, characterized in that: The discharger (24) uses pulse compressed air. When the pulse compressed air is turned on, the solid dust particles captured in the outer cavity (21) of the filter bag are peeled off and fall into the ash hopper (23).

7. The lime nitration dust removal device according to claim 2, characterized in that: Each of the dust collecting hoods (1) is connected to the first pipeline (5) via a corresponding plurality of pipeline branches, and the first pipeline (5) is connected to the outer cavity (21) of the filter bag.

8. The lime nitration dust removal device according to claim 1, characterized in that: The number of the dust collecting hoods (1) ranges from 3 to 20.

9. The lime nitration dust removal device according to claim 1, characterized in that: The exhaust flue (4) comprises a clean air chamber (41) and an exhaust pipe (42); the clean air chamber (41) is located at the lower end of the exhaust pipe (42); and dust in the exhaust air is further purified through the clean air chamber (41).

10. The lime nitration dust removal device according to claim 2, characterized in that: The inner cavity (22) of the filter bag is in communication with the air inlet (31) of the induced draft fan (3) via the second pipe (6), and the exhaust flue (4) is in communication with the air outlet (32) of the induced draft fan (3) via the third pipe (7). When the induced draft fan (3) is started, a negative pressure state is formed in the inner cavity (22) of the filter bag.

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