Flue gas desulfurization, denitration and dust removal device

Abstract

The utility model discloses a flue gas desulfurization and denitrification dust collector, including processing jar, the lower left of processing jar is installed with the air inlet pipe, the upper portion of processing jar inner chamber is installed with activated carbon filter board, the top of activated carbon filter board is connected with baffle demister and is installed, the upper portion of baffle demister is installed with the spray pipe, the top of spray pipe is communicated with the constant -quantity pump through the pipeline and is penetrated to the outside, the right side of constant -quantity pump is communicated with the liquid storage tank. The utility model discloses through activated carbon filter board in processing jar and carries out preliminary denitrification, and spray pipe sprays desulfurizer and carries out preliminary desulfurization, and then sprays the spray head in the spray tank again and filters through the primary -efficiency filter screen board and the high -efficient filter screen board, realizes the multilevel processing of the desulfurization, denitrification and dust removal to the flue gas, and the dust particle after spraying is affected by gravity and drops down, and is collected by waste liquid collecting tank, greatly improves the effect and efficiency of flue gas purification.

Description

Technical Field

[0001] This utility model relates to the field of flue gas desulfurization and denitrification technology, specifically to a flue gas desulfurization, denitrification and dust removal device. Background Technology

[0002] Industrial production processes generate large amounts of flue gas containing sulfur oxides, nitrogen oxides, and dust. If this flue gas is directly released into the atmosphere, it will cause serious environmental pollution, harming the ecological environment and human health. Therefore, desulfurization, denitrification, and dust removal of flue gas are essential steps in industrial production. Currently, existing flue gas treatment devices often have low dust removal efficiency, and a large number of pollutant particles remain in the treated flue gas. Directly releasing the flue gas will cause air pollution and make it difficult to meet increasingly stringent environmental standards. Utility Model Content

[0003] The purpose of this invention is to provide a flue gas desulfurization, denitrification and dust removal device with the advantage of multi-stage dust removal treatment.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a flue gas desulfurization, denitrification, and dust removal device, comprising a treatment tank, an air inlet pipe installed at the lower left of the treatment tank, an activated carbon filter plate installed above the inner cavity of the treatment tank, a baffle plate demister snapped onto the top of the activated carbon filter plate, a spray pipe installed above the baffle plate demister, a metering pump connected to the top of the spray pipe via a pipe extending to the outside, a liquid storage tank connected to the right side of the metering pump, a conveying pump connected to the top of the treatment tank via a conveying pipe, a spray box connected to the dust outlet pipe of the conveying pump, a spray pipe installed above the inner cavity of the spray box, a spray head connected to the bottom of the spray pipe, an inlet pipe connected to the top of the spray pipe, a primary filter plate and a high-efficiency filter plate installed sequentially from top to bottom inside the spray box, a waste liquid collection box installed at the bottom of the inner cavity of the spray box, and a flue gas exhaust pipe connected to the upper right side of the spray box.

[0005] As a preferred embodiment, guide plates are installed obliquely on both sides of the inner cavity of the spray box and between the primary filter plate and the high-efficiency filter plate, with the oblique ends of the guide plates extending above the high-efficiency filter plate.

[0006] As a preferred embodiment, a support plate is installed at the bottom of the delivery pump, and the right end of the support plate is bolted to the left side of the spray box. A box door is slidably installed on the front of the spray box, and an observation window is embedded in the front of the box door.

[0007] As a preferred embodiment, a support base is fixedly installed on both sides of the lower part of the inner cavity of the spray box. A locking block is vertically engaged inside the support base, and the upper end of the locking block is connected to the bottom of the high-efficiency filter plate. The high-efficiency filter plate is located above the waste liquid collection box.

[0008] As a preferred embodiment, positioning seats are fixedly installed on both sides of the bottom of the primary filter screen, and the outside of the positioning seats is connected to the inner wall of the spray box.

[0009] As a preferred embodiment, a drain pipe is connected to the right side of the waste liquid collection tank, and the right end of the drain pipe extends to the outside of the spray tank and is movably equipped with a control valve. A sedimentation layer is also laid inside the waste liquid collection tank.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model achieves multi-level treatment of flue gas desulfurization, denitrification, and dust removal by using activated carbon filter plates in the treatment tank, spraying desulfurizing agent through spray pipes for preliminary desulfurization, followed by spraying again through spray heads in the spray box and filtration by primary and high-efficiency filter plates. The dust particles after spraying drip downwards due to gravity and are collected by the waste liquid collection box, which greatly improves the effect and efficiency of flue gas purification.

[0011] 2. This utility model provides a stable support foundation for the delivery pump through the bearing plate. The horizontally sliding box door is flexible in opening and does not occupy extra space, making it easy for operators to quickly open the box door to inspect, clean or replace the primary filter screen, high-efficiency filter screen and other components inside the spray box. The observation window allows operators to observe the spraying situation, filter screen status and waste liquid collection inside the spray box at any time without opening the box door, so as to detect abnormalities in time and take countermeasures, thereby improving the controllability of equipment operation. The support base provides a reliable mounting point for the high-efficiency filter screen. With the vertical snap-fit ​​of the snap-fit ​​block, the high-efficiency filter screen can be firmly fixed in the preset position, preventing it from shifting or shaking during flue gas impact or spraying, and ensuring stable filtration operation. Attached Figure Description

[0012] Figure 1 This is a first-person perspective structural perspective view of the present invention; Figure 2 This is a second-view perspective structural perspective view of the present invention; Figure 3 This is a partial structural cross-sectional view of the present invention; Figure 4 This is a schematic diagram of the internal structure of the spray box of this utility model.

[0013] In the diagram: 1. Treatment tank; 2. Air inlet pipe; 3. Activated carbon filter plate; 4. Baffle plate demister; 5. Spray pipe; 6. Liquid storage tank; 7. Metering pump; 8. Transfer pump; 9. Support plate; 10. Spray box; 11. Spray pipe; 12. Spray head; 13. Liquid inlet pipe; 14. Primary filter screen; 15. High-efficiency filter screen; 16. Guide plate; 17. Waste liquid collection tank; 18. Support base; 19. Door; 20. Observation window; 21. Drain pipe; 22. Control valve. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. Example 1:

[0016] Please see Figure 1 As shown, this utility model provides a flue gas desulfurization, denitrification, and dust removal device, including a treatment tank 1. An inlet pipe 2 is installed on the lower left side of the treatment tank 1. An activated carbon filter plate 3 is installed above the inner cavity of the treatment tank 1. A baffle plate demister 4 is snapped onto the top of the activated carbon filter plate 3. A spray pipe 5 is installed above the baffle plate demister 4. The top of the spray pipe 5 is connected to a metering pump 7 via a pipe extending to the outside. A storage tank 6 is connected to the right side of the metering pump 7. The top of the treatment tank 1 is connected to... A conveying pipe is connected to a conveying pump 8, and the dust outlet pipe of the conveying pump 8 is connected to a spray box 10. A spray pipe 11 is installed above the inner cavity of the spray box 10. A spray head 12 is connected to the bottom of the spray pipe 11, and an inlet pipe 13 is connected to the top of the spray pipe 11. A primary filter screen 14 and a high-efficiency filter screen 15 are installed inside the spray box 10 from top to bottom. A waste liquid collection box 17 is installed at the bottom of the inner cavity of the spray box 10. An exhaust pipe is connected to the upper right side of the spray box 10.

[0017] This technical solution achieves preliminary denitrification through activated carbon filter plate 3 in treatment tank 1, preliminary desulfurization through spraying desulfurizing agent spraying through spray pipe 5, and further spraying through spray head 12 in spray box 10, as well as filtration through primary filter plate 14 and high-efficiency filter plate 15. This achieves multi-level treatment of flue gas desulfurization, denitrification and dust removal. The dust particles after spraying drip downwards due to gravity and are collected by waste liquid collection box 17, which greatly improves the effect and efficiency of flue gas purification. Example 2:

[0018] Based on Embodiment 1, this utility model is as follows: Figure 3 As shown, a guide plate 16 is obliquely installed on both sides of the inner cavity of the spray box 10 and between the primary filter plate 14 and the high-efficiency filter plate 15. The oblique end of the guide plate 16 extends above the high-efficiency filter plate 15.

[0019] Adopting such Figure 1 The technical solution shown has an inclined design for the guide plate 16, which guides the filtered waste liquid to flow to the high-efficiency filter plate 15 and efficiently treats particulate impurities in the sprayed waste liquid. This avoids dead zones caused by local accumulation of flue gas or uneven flow rate, ensures that the filter area is fully utilized, and improves the overall purification effect.

[0020] Secondly, in the technical solution, a support plate 9 is installed at the bottom of the delivery pump 8. The right end of the support plate 9 is installed with the left side of the spray box 10 by bolts. A box door 19 is slidably installed on the front of the spray box 10. An observation window 20 is embedded in the front of the box door 19. Support seats 18 are fixedly installed on both sides of the lower part of the inner cavity of the spray box 10. A snap-fit ​​block is vertically snapped into the inside of the support seat 18. The upper end of the snap-fit ​​block is connected to the bottom of the high-efficiency filter plate 15. The high-efficiency filter plate 15 is located above the waste liquid collection box 17.

[0021] Its adoption is as follows Figure 1 The technical solution shown provides a stable support base for the conveying pump 8 with the support plate 9. The horizontally sliding box door 19 is flexible in opening and does not occupy extra space, making it easy for operators to quickly open the box door 19 to inspect, clean or replace components such as the primary filter screen 14 and high-efficiency filter screen 15 inside the spray box 10. The observation window 20 allows operators to observe the spraying situation, filter status and waste liquid collection inside the spray box 10 at any time without opening the box door 19, so as to detect abnormalities in time and take countermeasures, thereby improving the controllability of equipment operation. The support base 18 provides a reliable mounting base for the high-efficiency filter screen 15. With the vertical snap-fit ​​of the snap-fit ​​block, the high-efficiency filter screen 15 can be firmly fixed in the preset position, preventing it from shifting or shaking during flue gas impact or spraying, and ensuring stable filtration operation. Example 3:

[0022] This utility model is as follows Figures 1-4 As shown, positioning seats are fixedly installed on both sides of the bottom of the primary filter plate 14, and the outside of the positioning seats is connected to the inner wall of the spray box 10; the right side of the waste liquid collection box 17 is connected to the drain pipe 21, the right end of the drain pipe 21 extends to the outside of the spray box 10 and is movably installed with the control valve 22, and the inside of the waste liquid collection box 17 is further lined with a sedimentation layer.

[0023] Using the above technical solution, the positioning seat can provide a clear installation benchmark for the primary filter screen 14, ensuring that its position in the spray box 10 is accurate and correct, avoiding gaps between the filter screen and the inner wall of the box due to installation deviation, preventing unfiltered flue gas from escaping through the gaps, and ensuring the integrity of the primary filtration process. The drain pipe 21 connects the waste liquid collection tank 17 to the outside of the spray tank 10, providing a channel for waste liquid discharge. The control valve 22 can flexibly control the opening and closing of the drain and the amount of drainage, which is convenient for timely discharge according to the amount of waste liquid collected, avoiding excessive accumulation of waste liquid in the collection tank. At the same time, it is convenient for centralized treatment or recycling of the discharged waste liquid. The sedimentation layer laid inside can further precipitate and separate impurities such as dust particles in the waste liquid, so that larger particles of impurities settle in the sedimentation layer under the action of gravity, reducing the pollutant content in the discharged waste liquid, reducing the difficulty of subsequent waste liquid treatment, and better meeting environmental protection requirements.

[0024] The working principle of this utility model is as follows: The flue gas to be treated first enters the bottom of the treatment tank 1 through the inlet pipe 2. During the upward flow, it first comes into contact with the activated carbon filter plate 3. The porous structure of the activated carbon will initially adsorb some organic pollutants, odors and fine particles in the flue gas, completing the first round of purification. Subsequently, the flue gas continues to rise to the baffle plate demister 4 and intercepts the water mist carried in the flue gas. Above the baffle plate demister 4, the desulfurization and denitrification agent in the storage tank 6 is accurately delivered to the spray pipe 5 through the metering pump 7. After being atomized by the spray pipe 5, the agent is evenly sprayed into the treatment tank 1. The agent reacts chemically with the sulfur oxides in the flue gas to generate solid or liquid harmless substances, thereby achieving desulfurization and denitrification. The flue gas purified by the treatment tank 1 is transported to the spray box 10 through the conveying pipe by the conveying pump 8. The spray pipe 11 at the top of the spray box 10 is connected to the spray liquid through the liquid inlet pipe 13. The spray liquid is atomized by the spray head 12 and sprayed from top to bottom, forming a counter-current contact with the rising flue gas, further washing away residual dust and unreacted pollutants in the flue gas, forming dust-laden waste liquid. Part of the flue gas is discharged through the exhaust pipe, and the other part of the sprayed flue gas continues to flow downward, passing through the primary filter screen in sequence. The primary filter 14 and the high-efficiency filter 15 are used. The primary filter 14 intercepts large dust particles in the flue gas through its larger pores, while the high-efficiency filter 15 below captures fine particles through its finer pores. The waste liquid generated by spraying and filtration falls under the action of gravity and eventually flows into the waste liquid collection tank 17. The sedimentation layer in the tank will cause the suspended particles in the waste liquid to settle by gravity, realizing solid-liquid separation. When the waste liquid accumulates to a certain amount, it can be discharged in a concentrated manner for subsequent treatment by opening the control valve 22 on the drain pipe 21.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A flue gas desulfurization, denitrification, and dust removal device, comprising a treatment tank (1), characterized in that: An air inlet pipe (2) is installed on the lower left side of the treatment tank (1). An activated carbon filter plate (3) is installed above the inner cavity of the treatment tank (1). A baffle plate demister (4) is snapped onto the top of the activated carbon filter plate (3). A spray pipe (5) is installed above the baffle plate demister (4). A metering pump (7) is connected to the top of the spray pipe (5) through a pipe to the outside. A storage tank (6) is connected to the right side of the metering pump (7). A delivery pump (8) is connected to the top of the treatment tank (1) through a delivery pipe. The dust outlet pipe of the pump (8) is connected to the spray box (10). A spray pipe (11) is installed above the inner cavity of the spray box (10). A spray head (12) is connected to the bottom of the spray pipe (11). An inlet pipe (13) is connected to the top of the spray pipe (11). A primary filter screen (14) and a high-efficiency filter screen (15) are installed in the interior of the spray box (10) from top to bottom. A waste liquid collection box (17) is installed at the bottom of the inner cavity of the spray box (10). A smoke exhaust pipe is connected to the upper right side of the spray box (10).

2. The flue gas desulfurization, denitrification, and dust removal device according to claim 1, characterized in that: A guide plate (16) is installed at an angle on both sides of the inner cavity of the spray box (10) and between the primary filter plate (14) and the high-efficiency filter plate (15). The inclined end of the guide plate (16) extends above the high-efficiency filter plate (15).

3. The flue gas desulfurization, denitrification, and dust removal device according to claim 1, characterized in that: The bottom of the delivery pump (8) is equipped with a support plate (9). The right end of the support plate (9) is installed with the left side of the spray box (10) by bolts. The front of the spray box (10) is slidably equipped with a box door (19). The front of the box door (19) is fitted with an observation window (20).

4. The flue gas desulfurization, denitrification, and dust removal device according to claim 1, characterized in that: Both sides of the inner cavity of the spray box (10) are fixedly installed with a support seat (18). The support seat (18) is vertically connected with a snap-fit ​​block, and the upper end of the snap-fit ​​block is connected to the bottom of the high-efficiency filter plate (15). The high-efficiency filter plate (15) is located above the waste liquid collection box (17).

5. The flue gas desulfurization, denitrification, and dust removal device according to claim 1, characterized in that: Positioning seats are fixedly installed on both sides of the bottom of the primary filter plate (14), and the outside of the positioning seats is connected to the inner wall of the spray box (10).

6. The flue gas desulfurization, denitrification, and dust removal device according to claim 1, characterized in that: The waste liquid collection tank (17) is connected to a drain pipe (21) on the right side. The right end of the drain pipe (21) extends to the outside of the spray tank (10) and is movably equipped with a control valve (22). The interior of the waste liquid collection tank (17) is also lined with a sedimentation layer.

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