Reaction tower for desulfurization and denitrification environment-friendly flue gas treatment

Abstract

The utility model relates to a desulfurization and denitrification environment-friendly flue gas treatment reaction tower which comprises a connecting plate, a first reaction tower is fixedly connected to the outer side of the connecting plate, a second reaction tower is fixedly connected to the outer side of the connecting plate and located on one side of the first reaction tower, and a first-stage filter plate is fixedly connected to the interior of the second reaction tower. And a second-stage filter plate is fixedly connected inside the second reaction tower and above the first-stage filter plate. The device has the beneficial effects that a quadruple purification system is formed by filtered water, the first-stage filter plate, the second-stage filter plate and the special-stage filter plate, the desulfurization efficiency can reach about 95%, the denitration efficiency exceeds about 85% and is far higher than that of a single treatment mode, the double-tower structure is convenient to independently maintain, the functions of each tower can be adjusted according to flue gas components, the filtered water can be recycled, and the cost is reduced. The treatment effect is maintained through pH monitoring and an automatic dosing system, and the operation cost is reduced; the device can treat industrial flue gas with different concentrations and different components, and is suitable for various industries such as electric power, steel, chemical engineering and the like.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, and in particular to a reaction tower for desulfurization and denitrification environmentally friendly flue gas treatment. Background Technology

[0002] In the existing technology, existing desulfurization and denitrification reaction towers generally have some limitations: some equipment adopts a single processing mechanism, and the desulfurization and denitrification efficiency is difficult to meet high requirements and cannot effectively deal with flue gas with complex components; some equipment has an unreasonable structural design, is bulky and cumbersome to install, and occupies a lot of space; and some equipment has high maintenance costs, internal components are easily damaged, and cleaning and maintenance are inconvenient, resulting in increased long-term operating costs. Utility Model Content

[0003] In view of the above-mentioned problems in the prior art, the main purpose of this utility model is to provide a reaction tower for desulfurization and denitrification environmental protection flue gas treatment, which solves some limitations of the existing desulfurization and denitrification reaction towers: some equipment adopts a single treatment mechanism, and the desulfurization and denitrification efficiency is difficult to meet high requirements and cannot effectively deal with flue gas with complex components; some equipment has an unreasonable structural design, is bulky and cumbersome to install, and occupies a lot of space; and some equipment has high maintenance costs, internal components are easily damaged, and cleaning and maintenance are inconvenient, resulting in increased long-term operating costs.

[0004] The technical solution of this utility model is as follows: a reaction tower for desulfurization and denitrification environmental protection flue gas treatment includes a connecting plate. A first reaction tower is fixedly connected to the outside of the connecting plate. A second reaction tower is fixedly connected to the outside of the connecting plate and to one side of the first reaction tower. A primary filter plate is fixedly connected inside the second reaction tower. A secondary filter plate is fixedly connected inside the second reaction tower and above the primary filter plate. A super filter plate is fixedly connected inside the second reaction tower and above the secondary filter plate. A first conveying pipe is fixedly connected between the first reaction tower and the second reaction tower and below the primary filter plate. The two ends of the first conveying pipe are connected to the interiors of the first reaction tower and the second reaction tower.

[0005] Through the above technical solution, the filtered water, together with the primary filter plate, secondary filter plate, and special filter plate, forms a four-stage purification system. The desulfurization efficiency can reach about 95%, and the denitrification efficiency exceeds 85%, which is far higher than that of single treatment methods. The dual-tower structure facilitates independent maintenance, and the function of each tower can be adjusted according to the composition of the flue gas. The filtered water can be recycled, and the treatment effect is maintained through pH monitoring and automatic dosing system, reducing operating costs. It can treat industrial flue gas of different concentrations and compositions, and is suitable for various industries such as power, steel, and chemical industries.

[0006] In a preferred embodiment, a primary filter plate is fixedly connected inside the first reaction tower and outside the first delivery pipe, and a first gas collecting hood is fixedly connected to one end of the first delivery pipe and above the primary filter plate. Two first exhaust fans are installed inside the first gas collecting hood.

[0007] Through the above technical solutions, the primary filter plate reduces the burden on subsequent filters, and the first exhaust fan and the first gas collection hood work together to promote the directional flow of flue gas, ensure a smooth treatment process, and improve the overall treatment efficiency.

[0008] In a preferred embodiment, a second conveying pipe is fixedly connected to the outside of the first reaction tower, one end of the second conveying pipe extends into the interior of the first reaction tower and is fixedly connected to a diffusion hood, and a second exhaust fan is installed and connected inside the first reaction tower and above the diffusion hood.

[0009] Through the above technical solution, the diffuser and the second exhaust fan work together to make the reaction medium evenly dispersed, promote the full contact and reaction between flue gas and medium, and improve the desulfurization and denitrification reaction efficiency and treatment quality.

[0010] In a preferred embodiment, a discharge pipe is fixedly connected to the top of the second reaction tower, the bottom of the discharge pipe extends into the interior of the second reaction tower and is fixedly connected to a second gas collection hood, and a third exhaust fan is installed and connected inside the second reaction tower and below the second gas collection hood.

[0011] Through the above technical solution, the third exhaust fan works in conjunction with the second gas collection hood to efficiently collect the treated clean flue gas and discharge it in an orderly manner through the exhaust pipe, ensuring a stable and smooth emission process.

[0012] In a preferred embodiment, a disassembly valve is installed and connected to the outside of the first delivery pipe and between the first reaction tower and the second reaction tower. Support columns are fixedly connected at equal intervals to the outside of the first reaction tower and the second reaction tower and at the bottom of the connecting plate. A threaded sealing cap is provided at the bottom of the second reaction tower.

[0013] The above technical solutions facilitate equipment maintenance and repair by disassembling the valve, enhance equipment stability by supporting the column, and make it easy to clean the inside of the threaded sealing cover, thus ensuring long-term stable operation of the equipment and extending its service life.

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

[0015] In this invention, the filtered water, along with the primary, secondary, and special-grade filter plates, forms a four-stage purification system. The desulfurization efficiency reaches approximately 95%, and the denitrification efficiency exceeds 85%, significantly higher than single-treatment methods. The dual-tower structure facilitates independent maintenance, and the function of each tower can be adjusted according to the flue gas composition. The filtered water is recyclable, and the treatment effect is maintained through pH monitoring and an automatic dosing system, reducing operating costs. It can treat industrial flue gas of varying concentrations and compositions, suitable for various industries such as power, steel, and chemicals. The primary filter plate reduces the burden on subsequent filters. The first exhaust fan and the first gas collection hood work together to promote directional flow of flue gas, ensuring a smooth treatment process and improving overall treatment efficiency. The diffuser hood and the second exhaust fan work together to evenly disperse the reaction medium, promoting full contact and reaction between the flue gas and the medium, improving desulfurization and denitrification reaction efficiency and treatment quality. The third exhaust fan and the second gas collection hood work together to efficiently collect the treated clean flue gas, which is then discharged in an orderly manner through the discharge pipe, ensuring a stable and smooth discharge process. The disassembly valve facilitates equipment maintenance and repair, the support column enhances equipment stability, and the threaded sealing cover facilitates internal cleaning, ensuring long-term stable operation and extending the service life of the equipment. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a reaction tower for desulfurization and denitrification environmental protection flue gas treatment;

[0017] Figure 2 A bottom view of the structure of a reaction tower for desulfurization and denitrification environmental flue gas treatment is provided for this utility model;

[0018] Figure 3 This utility model provides a cross-sectional three-dimensional structural diagram of a reaction tower for desulfurization and denitrification environmental flue gas treatment;

[0019] Figure 4 This utility model provides a front view schematic diagram of the cross-sectional structure of a reaction tower for desulfurization and denitrification environmental flue gas treatment.

[0020] Legend: 1. Connecting plate; 2. First reaction tower; 3. Primary filter plate; 4. First conveying pipe; 5. First gas collecting hood; 6. First exhaust fan; 7. Second conveying pipe; 8. Diffuser; 9. Second exhaust fan; 10. Second reaction tower; 11. Primary filter plate; 12. Secondary filter plate; 13. Special filter plate; 14. Third exhaust fan; 15. Discharge pipe; 16. Second gas collecting hood; 17. Disassembly valve; 18. Support column. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Example

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, this utility model provides a technical solution: including a connecting plate 1, a first reaction tower 2 fixedly connected to the outside of the connecting plate 1, a second reaction tower 10 fixedly connected to the outside of the connecting plate 1 and on one side of the first reaction tower 2, a primary filter plate 11 fixedly connected inside the second reaction tower 10, a secondary filter plate 12 fixedly connected inside the second reaction tower 10 and above the primary filter plate 11, a super filter plate 13 fixedly connected inside the second reaction tower 10 and above the secondary filter plate 12, a first conveying pipe 4 fixedly connected between the first reaction tower 2 and the second reaction tower 10 and below the primary filter plate 11, and the two ends of the first conveying pipe 4 communicating with the interiors of the first reaction tower 2 and the second reaction tower 10.

[0024] In this embodiment, the connecting plate 1 serves as the basic support structure, fixing the first reaction tower 2 and the second reaction tower 10 by welding or bolting to ensure the relative position stability of the two towers and form an integrated treatment system. The flue gas to be treated first enters the first reaction tower 2 for preliminary purification, and then enters the second reaction tower 10 through the first conveying pipe 4. The inlet of the first conveying pipe 4 is located above the primary filter plate 3, and the outlet is located below the surface of the filtered water at the bottom of the second reaction tower 10, allowing the flue gas to pass through the filtered water in a bubbling manner, using the adsorption effect of the liquid to remove some sulfides, nitrogen oxides, and particulate matter. After passing through the filtered water, the flue gas rises and passes sequentially through the primary filter plate 11, the secondary filter plate 12, and the special filter plate 13. The primary filter plate 11 uses a coarse-pore ceramic or metal filter screen to intercept larger particles and droplets; the secondary filter plate 12 uses activated carbon or molecular sieve materials to adsorb small molecule pollutants; the special filter plate 13 uses a catalyst coating structure to promote the chemical reaction of desulfurization and denitrification; the filtered water can be a weakly alkaline solution, absorbing SO2 through acid-base neutralization reaction, while dissolving some NO2, reducing the load on subsequent treatment.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a primary filter plate 3 is fixedly connected inside the first reaction tower 2 and outside the first conveying pipe 4. A first gas collecting hood 5 is fixedly connected at one end of the first conveying pipe 4 and above the primary filter plate 3. Two first exhaust fans 6 are installed inside the first gas collecting hood 5.

[0026] In this embodiment, the primary filter plate 3 in the first reaction tower 2 performs preliminary interception of large particulate impurities and other pretreatment on the incoming flue gas; the first exhaust fan 6 in the first gas collection hood 5 is activated to generate suction, which guides the flue gas that has passed through the primary filter to the second reaction tower 10 through the first conveying pipe 4, and the flue gas first passes through the water filtered at the bottom of the second reaction tower 10.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a second conveying pipe 7 is fixedly connected to the outside of the first reaction tower 2. One end of the second conveying pipe 7 extends into the interior of the first reaction tower 2 and is fixedly connected to a diffuser hood 8. A second exhaust fan 9 is installed and connected inside the first reaction tower 2 and above the diffuser hood 8.

[0028] In this embodiment, the second delivery pipe 7 introduces the medium required for the reaction, which diffuses through the diffuser hood 8 in the first reaction tower 2. The second exhaust fan 9 is activated to accelerate the mixing of the medium and the flue gas, thereby enhancing the reaction effect.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a discharge pipe 15 is fixedly connected to the top of the second reaction tower 10, the bottom of the discharge pipe 15 extends into the interior of the second reaction tower 10 and is fixedly connected to a second gas collection hood 16, and a third exhaust fan 14 is installed and connected inside the second reaction tower 10 and below the second gas collection hood 16.

[0030] In this embodiment, the third exhaust fan 14 is activated, drawing the flue gas, which has been processed by multiple filter plates, upwards and collecting it in the second gas collection hood 16, and finally discharging it from the system through the exhaust pipe 15.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a disassembly valve 17 is installed and connected on the outside of the first conveying pipe 4 and between the first reaction tower 2 and the second reaction tower 10. Support columns 18 are fixedly connected at equal intervals on the outside of the first reaction tower 2 and the second reaction tower 10 and at the bottom of the connecting plate 1. A threaded sealing cap is provided at the bottom of the second reaction tower 10.

[0032] In this embodiment, the disassembly valve 17 can open or close the first delivery pipe 4 for easy inspection and maintenance; the support columns 18 are evenly distributed to provide stable support for the equipment; the threaded sealing cap at the bottom of the second reaction tower 10 is removable to facilitate cleaning the bottom filtered water and deposited impurities.

[0033] Working principle:

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the connecting plate 1 serves as the basic support structure, fixing the first reaction tower 2 and the second reaction tower 10 by welding or bolting to ensure the relative position stability of the two towers and form an integrated treatment system. The flue gas to be treated first enters the first reaction tower 2 for preliminary purification, and then enters the second reaction tower 10 through the first conveying pipe 4. The inlet of the first conveying pipe 4 is located above the primary filter plate 3, and the outlet is located below the surface of the filter water at the bottom of the second reaction tower 10, allowing the flue gas to pass through the filter water in a bubbling manner, using the adsorption effect of the liquid to remove some sulfides, nitrogen oxides, and particulate matter. After passing through the filter water, the flue gas rises and passes sequentially through the primary filter plate 11, the secondary filter plate 12, and the special filter plate 13. The primary filter plate 11 uses a coarse-pore ceramic or metal mesh to intercept larger particles and droplets; the secondary filter plate 12 uses activated carbon or molecular sieve materials to adsorb small molecule pollutants; the super filter plate 13 uses a catalyst coating structure to promote the chemical reaction of desulfurization and denitrification; the filtered water can be a weakly alkaline solution, which absorbs SO2 through acid-base neutralization reaction and dissolves some NO2 at the same time, reducing the load of subsequent treatment. The primary filter plate 3 in the first reaction tower 2 performs preliminary interception of large particulate impurities and other pretreatment on the incoming flue gas; the first exhaust fan 6 in the first gas collection hood 5 is started to generate suction, which guides the flue gas that has passed through the primary filter to the second reaction tower 10 through the first conveying pipe 4, and the flue gas first passes through the filtered water at the bottom of the second reaction tower 10.

[0035] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A reaction tower for desulfurization and denitrification environmentally friendly flue gas treatment, comprising a connecting plate (1), characterized in that: A first reaction tower (2) is fixedly connected to the outside of the connecting plate (1). A second reaction tower (10) is fixedly connected to the outside of the connecting plate (1) and to one side of the first reaction tower (2). A primary filter plate (11) is fixedly connected inside the second reaction tower (10). A secondary filter plate (12) is fixedly connected inside the second reaction tower (10) and above the primary filter plate (11). A super filter plate (13) is fixedly connected inside the second reaction tower (10) and above the secondary filter plate (12). A first conveying pipe (4) is fixedly connected between the first reaction tower (2) and the second reaction tower (10) and below the primary filter plate (11). Both ends of the first conveying pipe (4) are connected to the inside of the first reaction tower (2) and the second reaction tower (10).

2. The reaction tower for desulfurization and denitrification environmental protection flue gas treatment according to claim 1, characterized in that: A primary filter plate (3) is fixedly connected inside the first reaction tower (2) and outside the first conveying pipe (4). A first gas collecting hood (5) is fixedly connected at one end of the first conveying pipe (4) and above the primary filter plate (3). Two first exhaust fans (6) are installed inside the first gas collecting hood (5).

3. The reaction tower for desulfurization and denitrification environmental protection flue gas treatment according to claim 1, characterized in that: A second conveying pipe (7) is fixedly connected to the outside of the first reaction tower (2). One end of the second conveying pipe (7) extends into the interior of the first reaction tower (2) and is fixedly connected to a diffuser hood (8). A second exhaust fan (9) is installed and connected inside the first reaction tower (2) and above the diffuser hood (8).

4. The reaction tower for desulfurization and denitrification environmental protection flue gas treatment according to claim 1, characterized in that: The top of the second reaction tower (10) is fixedly connected to a discharge pipe (15), the bottom of the discharge pipe (15) extends into the interior of the second reaction tower (10) and is fixedly connected to a second gas collection hood (16), and a third exhaust fan (14) is installed and connected inside the second reaction tower (10) and below the second gas collection hood (16).

5. The reaction tower for desulfurization and denitrification environmental protection flue gas treatment according to claim 1, characterized in that: A disassembly valve (17) is installed and connected on the outside of the first delivery pipe (4) and between the first reaction tower (2) and the second reaction tower (10). Support columns (18) are fixedly connected at equal intervals on the outside of the first reaction tower (2) and the second reaction tower (10) and at the bottom of the connecting plate (1). A threaded sealing cap is provided at the bottom of the second reaction tower (10).

Images