A flue gas desulfurization and denitration integrated cleaning and purifying device

Abstract

The utility model provides a kind of waste gas desulfurization and denitrification integration clean purification equipment, it is related to waste gas purification technical field, including desulfurization and denitrification machine body, the inside of desulfurization and denitrification machine body is equipped with desulfurization chamber and denitrification chamber, the inner wall of desulfurization chamber and close to top is equipped with L type ring cavity, connecting hole is equipped between L type ring cavity and denitrification chamber, the inside of desulfurization chamber and denitrification chamber is fixedly installed with spray pipe, the bottom of spray pipe is installed with shower nozzle at equal interval, the inner wall of desulfurization chamber is equipped with air inlet, the side wall of desulfurization and denitrification machine body and located air inlet place are fixed and are communicated with convex pipe.The utility model in, desulfurization chamber, denitrification chamber is independent and is communicated, waste gas is removed SO after preliminary desulfurization chamber, it is entered denitrification chamber by L type ring cavity, connecting hole, prolongs residence time, realizes SO, NOx Step Depth Processing, removal rate is significantly improved, while also can reduce the effect of equipment floor area.

Description

Technical Field

[0001] This utility model relates to the field of waste gas purification technology, and in particular to an integrated cleaning and purification equipment for waste gas desulfurization and denitrification. Background Technology

[0002] Traditional integrated equipment does not deeply integrate desulfurization and denitrification processes, resulting in short residence times of exhaust gas in each chamber and incomplete reactions, leading to high levels of SO2 and NO. x The removal rate is difficult to reach a high standard, especially the treatment effect of high concentration and complex component exhaust gas is poor. At the same time, the filter components (such as dust filter elements) are highly integrated with the equipment, and replacement requires disassembling a large number of structures, which is time-consuming and labor-intensive. Catalysts and adsorbents are prone to poisoning and failure, and frequent replacement increases costs, while downtime maintenance affects production. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies, such as equipment that does not deeply integrate desulfurization and denitrification processes, resulting in short residence times of exhaust gas in each chamber and incomplete reactions, leading to the excessive release of SO2 and NO. x To address the problem of poor removal rates, especially for high-concentration and complex waste gas, an integrated desulfurization and denitrification cleaning and purification device for waste gas has been proposed.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an integrated desulfurization and denitrification cleaning and purification device for waste gas, comprising a desulfurization and denitrification body, wherein a desulfurization chamber and a denitrification chamber are provided inside the desulfurization and denitrification body, an L-shaped annular cavity is provided on the inner wall of the desulfurization chamber near the top, a connecting hole is provided between the L-shaped annular cavity and the denitrification chamber, spray pipes are fixedly installed inside both the desulfurization chamber and the denitrification chamber, spray heads are installed at equal intervals at the bottom of the spray pipes, an air inlet is provided on the inner wall of the desulfurization chamber, a convex pipe is fixedly connected to one side wall of the desulfurization and denitrification body at the air inlet, a filter cylinder is provided inside the convex pipe, and a filter disc is fixedly connected inside the filter cylinder near one end.

[0005] Preferably, the desulfurization chamber and the denitrification chamber are each fixed with three rows of arc plates at equal intervals.

[0006] Preferably, a denitrification liquid inlet pipe and a desulfurization liquid inlet pipe are connected through and fixedly connected to the surface of the desulfurization and denitrification machine body, and the other end of the denitrification liquid inlet pipe and the desulfurization liquid inlet pipe are fixedly connected to the spray pipe.

[0007] Preferably, a denitrification waste liquid discharge pipe and a desulfurization waste liquid discharge pipe are fixedly connected through the surface and near the bottom of the desulfurization and denitrification machine body, and the denitrification waste liquid discharge pipe and the desulfurization waste liquid discharge pipe are respectively connected to the denitrification chamber and the desulfurization chamber.

[0008] Preferably, an exhaust pipe is fixed to the top of the desulfurization and denitrification machine body and located above the denitrification chamber.

[0009] Preferably, an L-shaped ring plate is sleeved and threaded onto the other end of the convex tube, and the surface of the L-shaped ring plate is fixed and connected to the convex air intake pipe.

[0010] Preferably, a cross plate is fixedly connected inside the L-shaped ring plate.

[0011] Preferably, a limiting ring plate is provided inside the filter cylinder and on one side of the filter disc, and the limiting ring plate is fixedly connected to the surface of the desulfurization and denitrification machine body and at the edge of the air inlet.

[0012] Preferably, a conical block is fixedly connected to the other end of the filter cylinder, and the pointed corner of the conical block is fixedly connected to the cross plate.

[0013] Preferably, both the connecting hole and the air inlet are located below the arc plate.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. In this utility model, the desulfurization chamber and the denitrification chamber are independent yet interconnected. After the exhaust gas undergoes preliminary SO2 removal in the desulfurization chamber, it enters the denitrification chamber through the L-shaped annular cavity and connecting hole, extending the residence time and achieving SO2 and NO removal. x Step-by-step deep processing significantly improves the removal rate while also reducing the equipment's footprint.

[0016] 2. In this utility model, the combination of convex tube, L-shaped ring plate and cross plate can quickly disassemble the filter cylinder and filter disc, thereby improving the replacement efficiency of filter cylinder and filter disc, reducing downtime losses and increasing the continuous operation time of the equipment. Attached Figure Description

[0017] Figure 1 This utility model provides a three-dimensional structural view of an integrated waste gas desulfurization and denitrification cleaning and purification equipment;

[0018] Figure 2 This utility model provides an overall structural cross-sectional view of an integrated waste gas desulfurization and denitrification cleaning and purification equipment;

[0019] Figure 3 A bottom view of the overall structure of an integrated desulfurization and denitrification cleaning and purification equipment for waste gas is provided for this utility model;

[0020] Figure 4 This utility model proposes an integrated cleaning and purification equipment for desulfurization and denitrification of waste gas. Figure 2 Enlarged view of the structure of area A in the middle;

[0021] Figure 5This utility model proposes an integrated cleaning and purification equipment for desulfurization and denitrification of waste gas. Figure 3 Enlarged view of the structure in area B.

[0022] Legend: 1. Desulfurization and denitrification machine body; 2. Desulfurization chamber; 3. Denitrification chamber; 4. L-shaped annular cavity; 5. Connecting hole; 6. Arc plate; 7. Spray pipe; 8. Spray head; 9. Denitrification liquid inlet pipe; 10. Desulfurization liquid inlet pipe; 11. Denitrification waste liquid discharge pipe; 12. Desulfurization waste liquid discharge pipe; 13. Exhaust pipe; 14. Air inlet hole; 15. Convex pipe; 16. L-shaped annular plate; 17. Convex air inlet pipe; 18. Cross plate; 19. Limiting ring plate; 20. Filter cylinder; 21. Filter disc; 22. Conical block. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] Example 1, as Figure 1-5 As shown, this utility model provides an integrated cleaning and purification equipment for desulfurization and denitrification of waste gas, including a desulfurization and denitrification body 1. The desulfurization and denitrification body 1 has a desulfurization chamber 2 and a denitrification chamber 3 inside. An L-shaped annular cavity 4 is formed on the inner wall of the desulfurization chamber 2 near the top. A connecting hole 5 is formed between the L-shaped annular cavity 4 and the denitrification chamber 3. Spray pipes 7 are fixedly installed inside both the desulfurization chamber 2 and the denitrification chamber 3. Spray heads 8 are installed at equal intervals at the bottom of the spray pipes 7. An air inlet 14 is formed on the inner wall of the desulfurization chamber 2. A convex pipe 15 is fixedly connected to one side wall of the desulfurization and denitrification body 1 at the air inlet 14. A filter cylinder 20 is provided inside the convex pipe 15. A filter disc 21 is fixedly connected inside the filter cylinder 20 near one end.

[0026] The overall effect of Embodiment 1 is as follows: The desulfurization and denitrification machine body 1 has a desulfurization chamber 2 and a denitrification chamber 3 inside. An L-shaped annular cavity 4 is formed on the inner wall of the desulfurization chamber 2 near the top. A connecting hole 5 is formed between the L-shaped annular cavity 4 and the denitrification chamber 3, allowing the exhaust gas in the desulfurization chamber 2 to enter the denitrification chamber 3 through the L-shaped annular cavity 4 and the connecting hole 5. Spray pipes 7 are fixedly installed inside both the desulfurization chamber 2 and the denitrification chamber 3, with spray nozzles evenly spaced at the bottom of the spray pipes 7. The head 8 can spray out the desulfurization and denitrification liquid in the spray pipe 7. An air inlet 14 is opened through the inner wall of the desulfurization chamber 2. A convex pipe 15 is fixed and connected to one side wall of the desulfurization and denitrification machine body 1 at the air inlet 14. A filter cylinder 20 is provided inside the convex pipe 15. A filter disc 21 is fixedly connected inside the filter cylinder 20 near one end. This can enable the exhaust gas to enter the convex pipe 15 and pass through the filter cylinder 20 and the filter disc 21 for filtration.

[0027] Example 2, as Figure 1-5 As shown, three rows of arc plates 6 are fixed at equal intervals inside the desulfurization chamber 2 and the denitrification chamber 3; the surface of the desulfurization and denitrification machine body 1 is penetrated and fixedly connected to the denitrification liquid inlet pipe 9 and the desulfurization liquid inlet pipe 10, and the other ends of the denitrification liquid inlet pipe 9 and the desulfurization liquid inlet pipe 10 are fixedly connected to the spray pipe 7; the surface of the desulfurization and denitrification machine body 1 and near the bottom are penetrated and fixedly connected to the denitrification waste liquid discharge pipe 11 and the desulfurization waste liquid discharge pipe 12, and the denitrification waste liquid discharge pipe 11 and the desulfurization waste liquid discharge pipe 12 are respectively connected to the denitrification chamber 3 and the desulfurization chamber 2; the top of the desulfurization and denitrification machine body 1 and above the denitrification chamber 3 are fixedly connected to the denitrification chamber 3. There is an exhaust pipe 13; the other end of the convex pipe 15 is fitted with and threadedly connected to an L-shaped ring plate 16, and the surface of the L-shaped ring plate 16 is fixed and connected to a convex air inlet pipe 17; a cross plate 18 is fixedly connected inside the L-shaped ring plate 16; a limiting ring plate 19 is provided inside the filter cylinder 20 and on one side of the filter disc 21, and the limiting ring plate 19 is fixedly connected to the surface of the desulfurization and denitrification machine body 1 and at the edge of the air inlet 14; a conical block 22 is fixedly connected to the other end of the filter cylinder 20, and the sharp corner of the conical block 22 is fixedly connected to the cross plate 18; the connecting hole 5 and the air inlet 14 are both located below the arc plate 6.

[0028] The overall effect of Embodiment 2 is as follows: Three rows of arc plates 6 are fixed at equal intervals inside the desulfurization chamber 2 and the denitrification chamber 3, which improves the contact between the desulfurization and denitrification liquids and the waste gas; a denitrification liquid inlet pipe 9 and a desulfurization liquid inlet pipe 10 are connected through and fixedly to the surface of the desulfurization and denitrification machine body 1, and the other ends of both pipes are fixedly connected to the spray pipe 7, which allows the denitrification and desulfurization liquids to be poured into the spray pipe 7; a denitrification waste liquid discharge pipe 11 and a desulfurization waste liquid discharge pipe 12 are connected through and fixedly to the surface of the desulfurization and denitrification machine body 1, near the bottom, and are respectively connected to the denitrification chamber 3 and the desulfurization chamber 2, which allows the denitrification waste liquid and desulfurization waste liquid to be discharged; an exhaust pipe 13 is fixedly connected to the top of the desulfurization and denitrification machine body 1, above the denitrification chamber 3, which allows the purified waste liquid to be discharged. The effect of exhaust gas treatment: An L-shaped ring plate 16 is sleeved and threadedly connected to the other end of the convex tube 15. The surface of the L-shaped ring plate 16 is fixed and connected to the convex air inlet pipe 17, which facilitates the installation or removal of the convex air inlet pipe 17. A cross plate 18 is fixedly connected inside the L-shaped ring plate 16, which can disperse the exhaust gas. A limiting ring plate 19 is provided inside the filter cylinder 20 and on one side of the filter disc 21. The limiting ring plate 19 is fixedly connected to the surface of the desulfurization and denitrification machine body 1 and at the edge of the air inlet 14, which can limit the filter cylinder 20. A conical block 22 is fixedly connected to the other end of the filter cylinder 20. The sharp corner of the conical block 22 is fixedly connected to the cross plate 18, which can fix one end of the filter cylinder 20. Since the connecting hole 5 and the air inlet 14 are both located below the arc plate 6, the exhaust gas can pass through the arc plate 6.

[0029] Working principle: Exhaust gas enters convex pipe 15 through convex inlet pipe 17. Filter cylinder 20 and filter disc 21 first intercept dust and particulate matter. Conical block 22 and cross plate 18 disperse the airflow to prevent impurity accumulation and protect the subsequent reaction chamber. After purification, the exhaust gas enters desulfurization chamber 2 through inlet hole 14. Desulfurization liquid feed pipe 10 supplies liquid to spray pipe 7. Spray head 8 sprays alkaline liquid (such as limestone slurry or ammonia water) to react with SO2. Arc plate 6 guides the exhaust gas to swirl upwards, prolonging the reaction time and ensuring full absorption of SO2. After desulfurization, the exhaust gas enters denitrification chamber 3 through L-shaped annular cavity 4 and connecting hole 5. Denitrification liquid feed pipe 9 supplies liquid (such as urea solution or ammonia solution). Spray head 8 sprays reducing agent to react with NO. x The reaction, with the arc plate 6 combined with the spray, enhances the gas-liquid reaction, NO x The waste gas is efficiently converted into harmless substances, and after treatment, it is discharged through exhaust pipe 13 in compliance with standards. The desulfurization waste liquid and denitrification waste liquid are collected through discharge pipes for subsequent resource utilization. When the filter cartridge 20 and filter disc 21 are cleaned or replaced regularly, the equipment is guaranteed to operate continuously and efficiently, forming a complete closed loop of "air intake, filtration, desulfurization, denitrification, emission, and operation and maintenance".

[0030] The wiring diagrams of the spray pipe 7 and spray head 8 in this utility model are common knowledge in the field. Their working principle is a well-known technology. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the spray pipe 7 and spray head 8 will not be explained in detail.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An integrated desulfurization and denitrification cleaning and purification device for waste gas, comprising a desulfurization and denitrification body (1), characterized in that: The desulfurization and denitrification machine body (1) has a desulfurization chamber (2) and a denitrification chamber (3) inside. An L-shaped annular cavity (4) is opened on the inner wall of the desulfurization chamber (2) near the top. A connecting hole (5) is opened between the L-shaped annular cavity (4) and the denitrification chamber (3). Spray pipes (7) are fixedly installed inside the desulfurization chamber (2) and the denitrification chamber (3). Spray heads (8) are installed at equal intervals at the bottom of the spray pipes (7). An air inlet hole (14) is opened on the inner wall of the desulfurization chamber (2). A convex pipe (15) is fixed and connected to one side wall of the desulfurization and denitrification machine body (1) at the air inlet hole (14). A filter cylinder (20) is provided inside the convex pipe (15). A filter disc (21) is fixedly connected inside the filter cylinder (20) near one end.

2. The integrated desulfurization and denitrification cleaning and purification equipment for waste gas according to claim 1, characterized in that: The desulfurization chamber (2) and the denitrification chamber (3) are each fixed with three rows of arc plates (6) at equal intervals.

3. The integrated desulfurization and denitrification cleaning and purification equipment for waste gas according to claim 1, characterized in that: The surface of the desulfurization and denitrification machine body (1) is connected to a denitrification liquid inlet pipe (9) and a desulfurization liquid inlet pipe (10), and the other end of the denitrification liquid inlet pipe (9) and the desulfurization liquid inlet pipe (10) are fixedly connected to the spray pipe (7).

4. The integrated desulfurization and denitrification cleaning and purification equipment for waste gas according to claim 1, characterized in that: The surface of the desulfurization and denitrification machine body (1) and near the bottom are connected to a denitrification waste liquid discharge pipe (11) and a desulfurization waste liquid discharge pipe (12), which are respectively connected to the denitrification chamber (3) and the desulfurization chamber (2).

5. The integrated desulfurization and denitrification cleaning and purification equipment for waste gas according to claim 1, characterized in that: The desulfurization and denitrification machine body (1) is fixed at the top and above the denitrification chamber (3) and connected to an exhaust pipe (13).

6. The integrated desulfurization and denitrification cleaning and purification equipment for waste gas according to claim 1, characterized in that: The other end of the convex tube (15) is fitted with and threaded with an L-shaped ring plate (16), and the surface of the L-shaped ring plate (16) is fixed and connected to a convex air inlet pipe (17).

7. The integrated desulfurization and denitrification cleaning and purification equipment for waste gas according to claim 6, characterized in that: A cross plate (18) is fixedly connected inside the L-shaped ring plate (16).

8. The integrated desulfurization and denitrification cleaning and purification equipment for waste gas according to claim 1, characterized in that: The filter cylinder (20) is provided with a limiting ring plate (19) inside and on one side of the filter disc (21). The limiting ring plate (19) is fixedly connected to the surface of the desulfurization and denitrification machine body (1) and at the edge of the air inlet (14).

9. The integrated desulfurization and denitrification cleaning and purification equipment for waste gas according to claim 7, characterized in that: The other end of the filter cylinder (20) is fixedly connected to a conical block (22), and the sharp corner of the conical block (22) is fixedly connected to the cross plate (18).

10. The integrated desulfurization and denitrification cleaning and purification equipment for waste gas according to claim 2, characterized in that: Both the connecting hole (5) and the air inlet (14) are located below the arc plate (6).

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