Flue gas desulfurization and denitrification equipment for environmental protection

Abstract

The utility model discloses flue gas desulfurization and denitrification equipment for environmental protection, which belongs to the field of flue gas desulfurization and denitrification equipment and is characterized in that a base is arranged between a desulfurization tower and a denitrification tower, a backwashing pump is arranged at the upper end of the base, and the backwashing pump is connected with the desulfurization tower and the denitrification tower through backwashing pipelines; the backwashing operation of the desulfurization tower and the denitration tower is realized through a backwashing pump; discharging pipes are mounted at the lower parts of the side walls of the desulfurization tower and the denitration tower, second valves are mounted on the discharging pipes, an ash collecting box is mounted at the outer ends of the two discharging pipes, a separation plate is arranged in the ash collecting box, and a filter screen is arranged at an opening in the upper end of the separation plate. And the backwashing pump regularly cleans the desulfurization tower and the denitration tower to remove solid particles and impurities, so that the equipment is kept clean and efficient. Therefore, the service life of equipment is prolonged, and the desulfurization and denitrification efficiency is improved. The waste collecting device separates solid particles and liquid through a discharging pipe and a dust collecting box, solids enter a dust collecting bin, the liquid enters a water accumulating bin, follow-up treatment is simplified, and the pollution risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of flue gas desulfurization and denitrification equipment, and in particular to a flue gas desulfurization and denitrification equipment for environmental protection. Background Technology

[0002] Flue gas desulfurization and denitrification equipment is used to reduce the emissions of sulfur oxides (SOx) and nitrogen oxides (NOx) in flue gas, which is of great significance for environmental protection and prevention of air pollution. After flue gas enters the boiler (flue gas) desulfurization, denitrification, and dust removal equipment, a dynamic S-shaped channel is first formed in the circulating self-excited chamber to achieve the separation of coarse particles, the humidification and condensation of fine particles, and the initial absorption of sulfur dioxide by the alkaline solution. Then, the flue gas reaches the membrane plate, where the increased specific surface area of ​​the liquid phase and the easily ruptured liquid film enhance the capture of particles and the absorption of harmful gases. When the flue gas flows through the fluidizer, a three-phase fluidized state of gas, liquid, and solid is achieved, extending the residence time and increasing the contact opportunities. After passing through the auxiliary spray section, the flue gas enters the isolation plate, where fine droplets are condensed, and the purified flue gas is directly discharged into the atmosphere from the outlet at the top of the equipment.

[0003] In practical use, flue gas desulfurization and denitrification equipment requires regular cleaning to remove accumulated dirt, a process that generates waste liquid and waste materials. Desulfurization waste liquid is typically weakly acidic and contains various heavy metal ions and other precipitable substances such as fluorides, sulfites, and sulfates. Direct discharge of these harmful substances can pollute water bodies, affecting water quality and threatening aquatic life and the entire ecosystem. Cleaning waste liquid from desulfurization and denitrification equipment may also contain unreacted desulfurization and denitrification agents and other chemicals. The discharge of these substances can pollute the soil, affecting soil fertility and plant growth, thus negatively impacting the entire terrestrial ecosystem. Utility Model Content

[0004] The main objective of this invention is to provide a flue gas desulfurization and denitrification device for environmental protection, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A flue gas desulfurization and denitrification device for environmental protection includes a desulfurization tower, a denitrification tower, a first pipe opening, and a second pipe opening. The first pipe opening is installed on the side wall of the desulfurization tower, and the second pipe opening is installed on the side wall of the denitrification tower. The denitrification tower and the desulfurization tower are connected by a pipeline.

[0007] The desulfurization tower and denitrification tower are equipped with a base in the middle, and a backwash pump is installed at the upper end of the base. The backwash pump is connected to the desulfurization tower and denitrification tower through a backwash pipeline, and the backwash operation of the desulfurization tower and denitrification tower is realized through the backwash pump.

[0008] The desulfurization tower and the denitrification tower are both equipped with discharge pipes on the lower side walls, and a second valve is installed on the discharge pipes. Ash collection boxes are installed at the outer ends of the two discharge pipes, and the ash collection boxes are equipped with isolation plates. A filter screen is installed at the upper opening of the isolation plate. The inner cavity of the ash collection box is divided into an ash collection bin and a water collection bin by the isolation plate.

[0009] In a preferred embodiment of this application, the backwash pump is connected to the water inlet device via a connector located at the outermost end of the water inlet pipe. A first instrument and a second instrument are installed on the water inlet pipe of the backwash pump. The first instrument and the second instrument are used to detect the water flow rate and flushing agent content in the backwash pump. A first valve is installed on the connector of the backwash pump.

[0010] In a preferred embodiment of this application, the discharge pipe is installed on the desulfurization tower and the denitrification tower via a connecting flange, the discharge pipe is connected to the second valve via a connecting flange, the discharge pipe is connected to the ash collection box via a connecting flange, and a sealing ring is provided at the connection between the discharge pipe and the ash collection box.

[0011] In a preferred embodiment of this application, the isolation plate is welded and fixed to the ash collection box, a sealing strip is provided at the connection between the isolation plate and the ash collection box, and the filter screen is framed around its perimeter and fixed to the isolation plate by bolts.

[0012] In a preferred embodiment of this application, the filter screen connects the ash collection bin and the water collection bin, allowing liquid in the ash collection bin to flow into the water collection bin through the filter screen.

[0013] In a preferred embodiment of this application, the ash collection box is embedded in the ground, and the upper opening of the ash collection box is provided with a sealed door. The upper opening of the ash collection box is lower than the lower ends of the desulfurization tower and the denitrification tower.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The backwash pump periodically backwashes the desulfurization and denitrification towers through backwash pipelines, effectively removing solid particles and impurities from the equipment, thus maintaining its cleanliness and efficient operation. This operation not only extends the service life of the equipment but also improves the efficiency of desulfurization and denitrification.

[0016] The waste collection device achieves effective separation of solid particles and liquids through the design of the discharge pipe and ash collection box. Solid particles flow into the ash collection bin through the filter screen, while liquids flow into the water collection bin. This separation method facilitates subsequent treatment and reduces the risk of environmental pollution.

[0017] The coordinated operation of the backwashing mechanism and waste collection device also improves the reliability and stability of the equipment. Regular cleaning and inspection allow for the timely detection and resolution of potential problems, thus preventing equipment failures and downtime. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a top view of the overall structure of this utility model;

[0020] Figure 3 This is a diagram showing the overall structure of the present invention;

[0021] Figure 4 The diagram shows the denitrification tower, desulfurization tower, backwashing mechanism, and waste collection device of this utility model.

[0022] Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0023] In the diagram: 1. Desulfurization tower; 2. Denitrification tower; 3. First inlet; 4. Second inlet; 5. Base; 6. Backwash pump; 7. Backwash pipe; 8. First instrument; 9. Second instrument; 10. Connecting port; 11. First valve; 12. Discharge pipe; 13. Second valve; 14. Ash collection box; 15. Isolation plate; 16. Filter screen; 17. Ash collection bin; 18. Water collection bin. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figure 1 - Figure 5 As shown, a flue gas desulfurization and denitrification device for environmental protection mainly consists of a desulfurization tower 1, a denitrification tower 2, a first inlet 3, and a second inlet 4. The first inlet 3 is installed on the side wall of the desulfurization tower 1, while the second inlet 4 is installed on the side wall of the denitrification tower 2. To achieve continuous desulfurization and denitrification, the denitrification tower 2 and the desulfurization tower 1 are connected together by a pipeline.

[0026] A base 5 is installed at the midpoint between desulfurization tower 1 and denitrification tower 2. A backwash pump 6 is installed at the upper part of the base 5, and the backwash pump 6 is connected to desulfurization tower 1 and denitrification tower 2 through a backwash pipe 7. Through the operation of the backwash pump 6, the desulfurization tower 1 and denitrification tower 2 can be effectively backwashed to keep the equipment clean and operate efficiently.

[0027] For ease of discharge and maintenance, discharge pipes 12 are installed on the lower side walls of both desulfurization tower 1 and denitrification tower 2. A second valve 13 is installed on each discharge pipe 12 to control the opening and closing of the discharge. The outer ends of both discharge pipes 12 are connected to an ash collection box 14. An isolation plate 15 is installed inside the ash collection box 14, and a filter screen 16 is installed at the upper opening of the isolation plate 15. The inner cavity of the ash collection box 14 is divided into an ash collection bin 17 and a water collection bin 18 by the isolation plate 15, which effectively separates solid particles and liquids for subsequent processing.

[0028] The backwash pump 6 is connected to the inlet water device via a connector 10, which is located at the outermost end of the inlet pipe. To ensure the normal operation of the backwash pump 6, a first instrument 8 and a second instrument 9 are installed on its inlet pipe. These two instruments are used to detect the water flow rate and flushing agent content in the backwash pump 6, respectively. In addition, a first valve 11 is also installed on the connector 10 of the backwash pump 6 to control the inlet water flow rate.

[0029] The discharge pipe 12 is installed on the desulfurization tower 1 and the denitrification tower 2 via a connecting flange. The discharge pipe 12 is connected to the second valve 13 via a connecting flange. To ensure the sealing of the connection, a sealing ring is provided at the connection between the discharge pipe 12 and the ash collection box 14 flange to prevent liquid leakage.

[0030] The isolation plate 15 is welded and fixed to the ash collection box 14. To ensure a tight connection, a sealing strip is provided at the connection between the isolation plate 15 and the ash collection box 14. The filter screen 16 has a frame structure around its perimeter, which is fixed to the isolation plate 15 with bolts to ensure the stability and filtration effect of the filter screen 16.

[0031] The function of filter screen 16 is to connect the ash collection bin 17 and the water collection bin 18. In actual operation, the liquid in the ash collection bin 17 flows into the water collection bin 18 through filter screen 16, which can effectively separate solid particles and liquid, facilitating subsequent processing.

[0032] The ash collection box 14 is designed to be embedded in the ground, and its upper opening is equipped with a sealed door to prevent dust and debris from entering. In addition, the upper opening of the ash collection box 14 is lower than the lower ends of the desulfurization tower 1 and the denitrification tower 2, which can ensure smooth discharge and avoid blockage.

[0033] Assembly Process: Place desulfurization tower 1 and denitrification tower 2 in their designated positions. Ensure that a first port 3 and a second port 4 are installed on the side walls of desulfurization tower 1 and denitrification tower 2, respectively. Connect desulfurization tower 1 and denitrification tower 2 together using pipelines to achieve continuous desulfurization and denitrification. Set a base 5 at the middle position of desulfurization tower 1 and denitrification tower 2. Install a backwash pump 6 at the upper part of the base 5. Connect the backwash pump 6 to desulfurization tower 1 and denitrification tower 2 through a backwash pipe 7. Install discharge pipes 12 at the lower part of the side walls of desulfurization tower 1 and denitrification tower 2. Install a second valve 13 on the discharge pipe 12 to control the opening and closing of the discharge. Connect the outer ends of the two discharge pipes 12 to the ash collection box 14. Install an isolation plate 15 inside the ash collection box 14 and a filter screen 16 at the upper opening. Divide the inner cavity of the ash collection box 14 into an ash collection bin 17 and a water collection bin 18 through the isolation plate 15. Connect the backwash pump 6 to the inlet water equipment via interface 10. Install the first instrument 8 and the second instrument 9 on the inlet pipe of the backwash pump 6 to detect the water flow rate and flushing agent content, respectively. Install the first valve 11 on interface 10 to control the inlet water flow rate. Install the discharge pipe 12 on the desulfurization tower 1 and the denitrification tower 2 using connecting flanges. Connect the discharge pipe 12 to the second valve 13 via connecting flanges. Ensure that a sealing ring is provided at the flange connection between the discharge pipe 12 and the ash collection box 14 to prevent liquid leakage. Weld the isolation plate 15 to the ash collection box 14 and install a sealing strip at the connection. Fix the filter screen 16 to the isolation plate 15 with bolts to ensure its stability and filtration effect.

[0034] During operation: Open the first valve 11 and start the backwash pump 6 to ensure sufficient water flow and flushing agent content within the equipment. Monitor the water flow and flushing agent content using the first instrument 8 and the second instrument 9 to ensure normal equipment operation. When cleaning is required, start the backwash pump 6 to backwash the desulfurization tower 1 and denitrification tower 2 through the backwash pipe 7. Backwashing effectively removes solid particles and impurities from the equipment, maintaining its cleanliness and efficient operation. When discharge is required, open the second valve 13 to allow solid particles and liquid to flow into the ash collection box 14 through the discharge pipe 12. Solid particles flow into the ash collection silo 17 through the filter screen 16, while liquid flows into the water collection silo 18, achieving effective separation of solid particles and liquid. Regularly inspect and clean the backwash pump 6, discharge pipe 12, and ash collection box 14 to ensure normal equipment operation. Clean the solid particles and liquid from the ash collection silo 17 and water collection silo 18 to prevent blockage and leakage. Continuously monitor the readings of the first instrument 8 and the second instrument 9, and adjust the opening of the first valve 11 as needed to ensure optimal equipment operation. Ensure that the upper opening of the ash collection box 14 is equipped with a sealed door to prevent dust and debris from entering. Ensure that the upper opening of the ash collection box 14 is lower than the lower ends of the desulfurization tower 1 and the denitrification tower 2 to ensure smooth discharge and avoid blockage.

[0035] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flue gas desulfurization and denitrification device for environmental protection, comprising a desulfurization tower (1), a denitrification tower (2), a first nozzle (3) and a second nozzle (4), the first nozzle (3) is installed on the side wall of the desulfurization tower (1), the second nozzle (4) is installed on the side wall of the denitrification tower (2), the denitrification tower (2) and the desulfurization tower (1) are connected through a pipeline, characterized in that: The desulfurization tower (1), the denitration tower (2) are provided with a base (5) at the middle part, the upper end of the base (5) is provided with a backwashing pump (6), the backwashing pump (6) is connected with the desulfurization tower (1) and the denitration tower (2) through a backwashing pipeline (7), and backwashing operation of the desulfurization tower (1) and the denitration tower (2) is realized through the backwashing pump (6); The lower part of the side wall of the desulfurization tower (1) and the denitration tower (2) is provided with a discharge pipe (12), a second valve (13) is arranged on the discharge pipe (12), the outer ends of the two discharge pipes (12) are provided with an ash collecting box (14), a partition plate (15) is arranged in the ash collecting box (14), a filter screen (16) is arranged at the opening of the upper end of the partition plate (15), and the inner cavity of the ash collecting box (14) is divided into an ash collecting bin (17) and a water storage bin (18) by the partition plate (15).

2. The flue gas desulfurization and denitrification equipment for environmental protection according to claim 1, characterized in that: The backwashing pump (6) is connected with the water inlet equipment through a connecting interface (10), the connecting interface (10) is located at the outermost end of the water inlet pipe, the water inlet pipe of the backwashing pump (6) is provided with a first instrument (8) and a second instrument (9), the water flow and the content of the washing agent in the backwashing pump (6) are detected through the first instrument (8) and the second instrument (9), and the connecting interface (10) of the backwashing pump (6) is provided with a first valve (11).

3. The flue gas desulfurization and denitrification equipment for environmental protection according to claim 1 or 2, characterized in that: The discharge pipe (12) is arranged on the desulfurization tower (1) and the denitration tower (2) through a connecting flange, the discharge pipe (12) is connected with the second valve (13) through a connecting flange, the discharge pipe (12) is connected with the ash collecting box (14) through a connecting flange, and a sealing ring is arranged at the connecting position of the discharge pipe (12) and the ash collecting box (14).

4. The flue gas desulfurization and denitrification equipment for environmental protection according to claim 3, characterized in that: The partition plate (15) is welded and fixed on the ash collecting box (14), a sealing strip is arranged at the connecting position of the partition plate (15) and the ash collecting box (14), and the filter screen (16) is surrounded by a frame and is fixed on the partition plate (15) through bolts.

5. The flue gas desulfurization and denitrification equipment for environmental protection according to claim 4, characterized in that: The filter screen (16) realizes communication between the ash collecting bin (17) and the water storage bin (18), and liquid in the ash collecting bin (17) flows into the water storage bin (18) through the filter screen (16).

6. The flue gas desulfurization and denitrification equipment for environmental protection according to claim 5, characterized in that: The ash collecting box (14) is embedded in the ground, a sealing door is arranged at the upper end opening of the ash collecting box (14), and the upper end opening of the ash collecting box (14) is lower than the lower end of the desulfurization tower (1) and the denitration tower (2).

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