Dedusting filter bag with denitration structure

Abstract

The utility model relates to the technical field of dust removal filter bags, in particular to a dust removal filter bag with a denitration structure, which comprises a filter bag body and two inner inserting cylinders, an inner dust removal plate is embedded on one side, far away from the center of the filter bag body, of the inner peripheral side wall of each inner inserting cylinder, and an inner inclined ring cylinder and an outer inclined ring cylinder are arranged on one side face, far away from the center of the filter bag body, of each inner dust removal plate. A straight ring cylinder is arranged between the two inner dust removal plates, side sleeve plates are detachably embedded in the two ends of the interior of the straight ring cylinder, an inner micropore denitration ring plate and an outer micropore denitration ring plate are arranged between the two side sleeve plates, and communicating holes are formed in the parts, located in the inner micropore denitration ring plate, of the side sleeve plates. By means of the two different hot flue gas transmission paths, on one hand, denitration paths of hot flue gas are enriched, and on the other hand, the two hot flue gas transmission paths are communicated, so that opposite impact of the two hot flue gas in the denitration process is increased, namely, the denitration circulation rate of the hot flue gas is increased, and the denitration efficiency of the hot flue gas is improved. Finally, the denitration activity is improved, and the overall denitration efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal filter bags, and particularly relates to a dust removal filter bag provided with a denitration structure. Background Art

[0002] SCR, namely selective catalytic reduction method, refers to that under the action of a catalyst, a reducing agent (such as NH3, liquid ammonia, urea) is used to selectively react with NOx in flue gas to generate non-toxic and pollution-free N2 and H2O. Since a catalyst is used in this process, the reaction temperature during the reaction is greatly reduced, so that the reduction reaction can be carried out at a lower temperature. A dust removal filter bag is a dry dust removal device, which is suitable for collecting fine, dry and non-fibrous dust. The filter bag is generally made of woven filter cloth or non-woven felt. The fibrous fabric is used to filter the dust-containing gas, and often integrates denitration technology, which can simultaneously treat the ash-containing components and NOx in the hot flue gas, that is, complete the two treatments of dust removal and denitration at the same time.

[0003] Generally, the dust removal treatment is completed when the hot flue gas enters the dust removal filter bag. Then, a denitration structure is arranged in the filter bag to complete denitration. Finally, the flue gas after dust removal and denitration is discharged from the other end of the filter bag. However, in the existing dust removal filter bag, for the design of the denitration structure, the hot flue gas often can only be transferred from one side to the other side for denitration, resulting in a single denitration path for the hot flue gas, and at the same time reducing the flow rate of the hot flue gas, thereby increasing the time required for complete denitration and reducing the overall denitration efficiency of the denitration structure.

[0004] Therefore, it is very necessary to invent a dust removal filter bag provided with a denitration structure to solve the above problems. Content of the Utility Model

[0005] In order to solve the deficiencies of the prior art, the purpose of the utility model is to provide a dust removal filter bag provided with a denitration structure, which solves the problems in the prior art that the hot flue gas often can only be transferred from one side to the other side for denitration, resulting in a single denitration path for the hot flue gas, and at the same time reducing the flow rate of the hot flue gas, thereby increasing the time required for complete denitration and reducing the overall denitration efficiency of the denitration structure.

[0006] In order to achieve the above objectives, the utility model adopts the following technical solutions:

[0007] A dust removal filter bag with a denitration structure, comprising a filter bag body and two inner insertion cylinders detachably sleeved at both ends of the filter bag body. An inner dust removal plate is embedded on one side of the inner peripheral side wall of the inner insertion cylinder away from the center of the filter bag body. An inner inclined ring cylinder and an outer inclined ring cylinder with a diameter larger than that of the inner inclined ring cylinder and communicable with the inner inclined ring cylinder are arranged on one side surface of the inner dust removal plate away from the center of the filter bag body. A straight ring cylinder is arranged between the two inner dust removal plates. Edge sleeve plates are detachably embedded at both ends inside the straight ring cylinder. An inner micro-hole denitration ring plate and an outer micro-hole denitration ring plate with a diameter larger than that of the inner micro-hole denitration ring plate are arranged between the two edge sleeve plates. And a communication hole is formed in the part of the edge sleeve plate located inside the inner micro-hole denitration ring plate, and the inside and outside of the straight ring cylinder can communicate with each other.

[0008] As a preferred solution of the present invention, a plurality of first communication grooves are formed in the peripheral side wall of the inner inclined ring cylinder.

[0009] As a preferred solution of the present invention, an outer dust removal plate is detachably installed on one end surface of the outer inclined ring cylinder away from the inner dust removal plate, and one end of the inner inclined ring cylinder away from the inner dust removal plate abuts against the outer dust removal plate.

[0010] As a preferred solution of the present invention, a connecting rod is detachably inserted between the two inner dust removal plates, and the two edge sleeve plates are respectively detachably sleeved at both ends of the connecting rod.

[0011] As a preferred solution of the present invention, a plurality of second communication grooves are formed in the peripheral side wall of the straight ring cylinder.

[0012] As a preferred solution of the present invention, the connection position between the straight ring cylinder and one side surface of the inner dust removal plate is consistent with the connection position between the inner inclined ring cylinder and the other side surface of the outer dust removal plate.

[0013] As a preferred solution of the present invention, edge ring cylinders are detachably installed at both ends of the filter bag body, and the inner insertion cylinders are detachably inserted into the edge ring cylinders.

[0014] In the above technical solution, the technical effects and advantages provided by the present invention:

[0015] In the present utility model, the inner dust removal plate can perform dust removal treatment on the hot flue gas entering the filter bag body. The inner inclined cylinder and the outer inclined cylinder can divert the hot flue gas, and increase the impact effect of the feed channel of the hot flue gas through the circulation function between the inner inclined cylinder and the outer inclined cylinder, thereby increasing the rate of the hot flue gas entering the filter bag body. When the hot flue gas enters the filter bag body for denitration treatment, part of the hot flue gas is transferred from the inner inclined cylinder to the straight cylinder, and performs denitration treatment from the inner to the outer through the communication holes from the inner micro-denitration ring plate to the outer micro-denitration ring plate. Another part of the hot flue gas enters between the filter bag body and the straight cylinder from the part between the inner inclined cylinder and the outer inclined cylinder, and then performs denitration treatment from the outer to the inner through the straight cylinder from the outer micro-denitration ring plate to the inner micro-denitration ring plate. Through the transfer paths of the hot flue gas in two different paths, on the one hand, the denitration path of the hot flue gas is enriched, and at the same time, the transfer paths of the two parts of the hot flue gas are connected, thereby increasing the impact of the two parts of the hot flue gas during the denitration process, that is, increasing the denitration circulation rate of the hot flue gas, and finally improving the denitration activity and the overall denitration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the overall structure of the present utility model after being cut along the center line;

[0018] Figure 3 For the present utility model Figure 2 is a schematic diagram of the front view of the plane structure.

[0019] DESCRIPTION OF THE REFERENCE NUMERALS:

[0020] 1. Filter bag body; 2. Side ring cylinder; 3. Inner insertion cylinder; 4. Inner dust removal plate; 5. Inner inclined cylinder; 6. Outer inclined cylinder; 7. Outer dust removal plate; 8. First communication groove; 9. Connecting rod; 10. Side sleeve plate; 11. Inner micro-denitration ring plate; 12. Outer micro-denitration ring plate; 13. Communication hole; 14. Straight cylinder; 15. Second communication groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present utility model will be further described below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model, and cannot be used to limit the protection scope of the present utility model.

[0022] The present utility model provides as Figures 1-3A dust removal filter bag provided with a denitrification structure as shown, includes a filter bag body 1 and two inner insertion cylinders 3 detachably sleeved at both ends of the filter bag body 1. An inner dust removal plate 4 is embedded on the side of the inner peripheral side wall of the inner insertion cylinder 3 away from the center of the filter bag body 1. On the side of the inner dust removal plate 4 away from the center of the filter bag body 1, there is an inner inclined ring cylinder 5 and an outer inclined ring cylinder 6 with a diameter larger than that of the inner inclined ring cylinder 5 and communicable with the inner inclined ring cylinder 5. A straight ring cylinder 14 is arranged between the two inner dust removal plates 4. At both ends inside the straight ring cylinder 14, side sleeve plates 10 are detachably embedded. Between the two side sleeve plates 10, there is an inner micro-hole denitrification ring plate 11 and an outer micro-hole denitrification ring plate 12 with a diameter larger than that of the inner micro-hole denitrification ring plate 11. And a communication hole 13 is opened in the part of the side sleeve plate 10 located inside the inner micro-hole denitrification ring plate 11. The inside and outside of the straight ring cylinder 14 can communicate. Through the circulation function between the inner inclined ring cylinder 5 and the outer inclined ring cylinder 6, the impact effect of the feed channel of the hot flue gas is increased. On the one hand, the dust removal effect on the hot flue gas is improved, and on the other hand, the rate of the hot flue gas entering the filter bag body 1 is increased.

[0023] A plurality of first communication grooves 8 are opened on the peripheral side wall of the inner inclined ring cylinder 5. The first communication grooves 8 can communicate the inner space of the inner inclined ring cylinder 5 with the space between the inner inclined ring cylinder 5 and the outer inclined ring cylinder 6.

[0024] An outer dust removal plate 7 is detachably installed on the end face of the outer inclined ring cylinder 6 away from the inner dust removal plate 4. And the end of the inner inclined ring cylinder 5 away from the inner dust removal plate 4 abuts against the outer dust removal plate 7. The outer dust removal plate 7 first conducts preliminary dust removal treatment on the hot flue gas, and then the inner dust removal plate 4 conducts secondary dust removal, improving the overall dust removal effect.

[0025] A connecting rod 9 is detachably inserted between the two inner dust removal plates 4. The two side sleeve plates 10 are respectively detachably sleeved at both ends of the connecting rod 9. The connecting rod 9 can fix the positions of the two inner dust removal plates 4.

[0026] A plurality of second communication grooves 15 are opened on the peripheral side wall of the straight ring cylinder 14. The connection position of the side of the straight ring cylinder 14 and the inner dust removal plate 4 is the same as the connection position of the other side of the inner inclined ring cylinder 5 and the outer dust removal plate 7. The second communication grooves 15 can make the space between the inner and outer side walls of the straight ring cylinder 14 communicate.

[0027] Side ring cylinders 2 are detachably installed at both ends of the filter bag body 1. The inner insertion cylinders 3 are detachably inserted into the side ring cylinders 2. The side ring cylinders 2 can increase the load-bearing positions on both sides of the filter bag body 1, thus facilitating the installation of the inner insertion cylinders 3.

[0028] In the present utility model, the inner dust removal plate 4 can perform dust removal treatment on the hot flue gas entering the filter bag body 1. The inner inclined ring cylinder 5 and the outer inclined ring cylinder 6 can divert the hot flue gas, and increase the impact effect of the feed channel of the hot flue gas through the flow function between the inner inclined ring cylinder 5 and the outer inclined ring cylinder 6, thereby increasing the rate of the hot flue gas entering the filter bag body 1. When the hot flue gas enters the filter bag body 1 for denitration treatment, part of the hot flue gas is transferred from the inner inclined ring cylinder 5 to the straight ring cylinder 14, and performs denitration treatment from the inside to the outside from the inner micro-hole denitration ring plate 11 to the outer micro-hole denitration ring plate 12 through the communication hole 13. Another part of the hot flue gas enters between the filter bag body 1 and the straight ring cylinder 14 from the part between the inner inclined ring cylinder 5 and the outer inclined ring cylinder 6, and then performs denitration treatment from the outside to the inside from the outer micro-hole denitration ring plate 12 to the inner micro-hole denitration ring plate 11 through the straight ring cylinder 14. Through the transfer paths of the hot flue gas in two different paths, on the one hand, the denitration path of the hot flue gas is enriched, and at the same time, the transfer paths of the two parts of the hot flue gas are connected, thereby increasing the impact of the two parts of the hot flue gas during the denitration process, that is, increasing the denitration flow rate of the hot flue gas, and finally improving the denitration activity and the overall denitration efficiency.

[0029] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the technical principle of the present utility model, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present utility model.

Claims

1. A dust removal filter bag provided with a denitration structure, characterized in that: It includes a filter bag body (1) and two inner insertion cylinders (3) detachably sleeved at both ends of the filter bag body (1). An inner dust removal plate (4) is embedded on the side of the inner peripheral side wall of the inner insertion cylinder (3) away from the center of the filter bag body (1). An inner inclined ring cylinder (5) and an outer inclined ring cylinder (6) with a diameter larger than that of the inner inclined ring cylinder (5) and communicable with the inner inclined ring cylinder (5) are provided on the side surface of the inner dust removal plate (4) away from the center of the filter bag body (1). A straight ring cylinder (14) is provided between the two inner dust removal plates (4). Side sleeve plates (10) are detachably embedded at both ends inside the straight ring cylinder (14). An inner micro-hole denitration ring plate (11) and an outer micro-hole denitration ring plate (12) with a diameter larger than that of the inner micro-hole denitration ring plate (11) are provided between the two side sleeve plates (10). And a communication hole (13) is provided in the part of the side sleeve plate (10) located inside the inner micro-hole denitration ring plate (11). The inside and outside of the straight ring cylinder (14) can communicate with each other.

2. The dedusting filter bag with a denitration structure according to claim 1, wherein: A plurality of first communication grooves (8) are provided on the peripheral side wall of the inner inclined ring cylinder (5).

3. The dust removal filter bag with a denitration structure according to claim 1, characterized in that: An outer dust removal plate (7) is detachably installed on the end face of the outer inclined ring cylinder (6) away from the inner dust removal plate (4), and the end of the inner inclined ring cylinder (5) away from the inner dust removal plate (4) abuts against the outer dust removal plate (7).

4. A dust removal filter bag with a denitrification structure according to claim 1, characterized in that: A connecting rod (9) is detachably inserted between the two inner dust removal plates (4), and the two side sleeve plates (10) are respectively detachably sleeved at both ends of the connecting rod (9).

5. A dust removal filter bag with a denitrification structure according to claim 1, characterized in that: A plurality of second communication grooves (15) are provided on the peripheral side wall of the straight ring cylinder (14).

6. The dedusting filter bag with a denitration structure according to claim 1, wherein: The connection position between the side surface of the straight ring cylinder (14) and the inner dust removal plate (4) is the same as the connection position between the other side surface of the inner inclined ring cylinder (5) and the outer dust removal plate (7).

7. The dust removal filter bag with a denitration structure according to claim 1, characterized in that: Side ring cylinders (2) are detachably installed at both ends of the filter bag body (1), and the inner insertion cylinders (3) are detachably inserted into the side ring cylinders (2).

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