Steel sintering flue gas desulfurization and denitrification equipment

Abstract

The utility model discloses steel sintering flue gas desulfurization and denitrification equipment which comprises a treatment box and a water spraying tank, the water spraying tank is fixedly mounted at the top in the treatment box, a self-cleaning filter and a water conveying pipe are fixedly mounted on the top surface of the treatment box, and the output end of the self-cleaning filter is communicated and connected with the water conveying pipe. The flue gas purification device has the beneficial effects that the water spraying tank and the sewage pump are adopted, when flue gas solid impurities are removed, flue gas can be conveyed into the water spraying tank through the gas inlet pipe, the sewage pump extracts water in the side box, the water is filtered by the self-cleaning filter and then enters the flow dividing pipe along the water conveying pipe, the water is sprayed out through the spraying head, and the solid impurities are removed through spraying water washing; after being mixed with water, the solid impurities enter the side box along the drainage pipe to complete water circulation, and in the water circulation process, the self-cleaning filter filters the water and completes automatic cleaning, so that the trouble of manually and frequently cleaning the filter screen is saved, and the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas desulfurization and denitration, and specifically, to a flue gas desulfurization and denitration device for iron and steel sintering flue gas. Background Technique

[0002] For the heat treatment of iron and steel, such as iron and steel sintering, a large amount of flue gas is easily generated. The flue gas contains nitrogen oxides and sulfides. The above nitrogen oxides and sulfides are polluting gases, and direct emission into the atmosphere will inevitably cause environmental pollution. Therefore, in the prior art, during the heat treatment of the above iron and steel, the tail gas generated by the heat treatment of steel is often required to be treated, such as desulfurization and denitration treatment.

[0003] After retrieval, it is found that the application number is CN202021941610.9, and the name is a flue gas desulfurization and denitration device for iron and steel sintering. This application proposes that by designing a desulfurization and denitration catalyst box, not only can the nitrogen oxides and sulfides in the sintering flue gas be effectively desulfurized and denitrified, but the above device components are designed for convenient operation, and can effectively block dust and avoid lamp rod pollution. However, this application filters and removes solid impurities in the flue gas through a filter screen. When the filter screen is used for a long time, more impurities will adhere to the surface, affecting the continuous filtration efficiency of the filter screen, and then affecting the air permeability and working efficiency. It requires frequent cleaning by staff, which is rather troublesome. At the same time, impurities or water vapor will also adhere to the surface of the transparent baffle, which will also affect the light transmittance and working efficiency, and further improvement can be made.

[0004] In view of the problems in the related art, no effective solution has been proposed yet. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a flue gas desulfurization and denitration device for iron and steel sintering, which has the advantages of more convenient use and improved working efficiency, and thus solves the problems in the above background technique.

[0007] (II) Technical Solutions

[0008] To achieve the above advantages of more convenient use and improved working efficiency, the specific technical solutions adopted by the utility model are as follows:

[0009] A steel sintering flue gas desulfurization and denitrification device, comprising a treatment tank and a water shower tank. A water shower tank is fixedly installed at the top inside the treatment tank, and a self-cleaning filter and a water delivery pipe are fixedly installed on the top surface of the treatment tank. The output end of the self-cleaning filter is connected to the water delivery pipe in a through manner. A shunt pipe is connected to the surface of the water delivery pipe in a through manner, and the shunt pipe penetrates and extends into the water shower tank. The other end of the shunt pipe is connected to a spray head in a through manner. An air inlet pipe is connected to the top of the treatment tank in a through manner, and the air inlet pipe extends below the spray head. A side tank is fixedly installed on the other side surface of the treatment tank, and a sewage pump is fixedly installed on the top surface of the side tank. The output end of the sewage pump is connected to the input end of the self-cleaning filter through a water inlet pipe in a through manner. The bottom of the water shower tank is connected to the side tank through a drain pipe. Inside the treatment tank, a catalyst plate is fixedly installed below the water shower tank. A lens is embedded in the front elevation of the treatment tank on one side of the catalyst plate. An ultraviolet lamp installation box is fixedly installed on the front elevation of the treatment tank outside the lens. An ultraviolet lamp is fixedly installed inside the ultraviolet lamp installation box. Reciprocating lead screws and guide rods are respectively arranged inside the treatment tank on both sides of the lens. A cleaning strip is arranged inside the lens. A scraping strip is fixedly installed on one side surface of the cleaning strip. The scraping strip is in sliding contact with the inner surface of the lens. The reciprocating lead screw penetrates the cleaning strip and is threadedly connected to the cleaning strip. The guide rod penetrates the cleaning strip and is slidably connected to the cleaning strip. One end of the reciprocating lead screw penetrates the bottom surface of the treatment tank and is rotatably connected to the treatment tank. The other end of the reciprocating lead screw is rotatably connected to the bottom surface of the water shower tank through a rotary connecting seat. Both ends of the guide rod are fixedly connected to the inner top surface and the inner bottom surface of the treatment tank. A driving motor is fixedly installed at one end of the bottom surface of the treatment tank, and the output end of the driving motor is fixedly connected to one end of the reciprocating lead screw. An exhaust pipe is connected to the bottom of the treatment tank in a through manner.

[0010] Further, the water inlet end of the sewage pump is connected to the inside of the side tank through a water suction pipe, and the bottom opening of the water suction pipe extends below the drain pipe.

[0011] Further, a solenoid valve is installed on the surface of the drain pipe, a liquid level switch is installed inside the water shower tank, and the output end of the liquid level switch is electrically connected to the input end of the solenoid valve.

[0012] Further, multiple groups of spray heads are arranged at equal intervals, and the water outlet direction of the spray heads is downward.

[0013] Further, brackets are fixedly installed on the bottom surfaces of both sides of the treatment tank, and the exhaust pipe penetrates through the brackets.

[0014] Further, one end of the reciprocating lead screw is rotatably connected to the bottom surface of the treatment tank through a sealed bearing, and the reciprocating lead screw and the guide rod are arranged in parallel.

[0015] Further, a sealed door is hinged on the back elevation of the treatment tank.

[0016] Furthermore, the distance between the catalyst plate and the lens is greater than the thicknesses of the cleaning strip and the scraping strip.

[0017] (III) Advantageous Effects

[0018] Compared with the prior art, the present utility model provides a desulfurization and denitrification device for steel sintering flue gas, having the following advantageous effects:

[0019] (1) The present utility model adopts a water shower tank and a sewage pump. When removing solid impurities from the flue gas, the flue gas can be transported through the intake pipe to the water shower tank. The sewage pump extracts the water inside the side tank, and after being filtered by the self-cleaning filter, it enters the shunt pipe along the water delivery pipe and is sprayed out through the spray heads. The solid impurities are removed by spray washing. After the solid impurities are mixed with the water, they enter the side tank along the drain pipe to complete the water cycle. During the water cycle, the self-cleaning filter filters the water and completes automatic cleaning, eliminating the trouble of manually frequently cleaning the filter net and improving the convenience of use.

[0020] (2) The present utility model adopts a cleaning strip. After the sintering flue gas from which solid impurities have been removed moves downward and contacts the catalyst plate, at the same time, the ultraviolet lamps inside the ultraviolet lamp installation box are activated, and the catalytic reaction process is triggered by ultraviolet rays to complete desulfurization and denitrification. During the catalytic reaction, the driving motor drives the reciprocating screw rod to rotate, thereby driving the cleaning strip and the scraping strip to reciprocate up and down. The scraping strip scrapes off the water vapor and impurities on the surface of the lens, improving the light transmittance of the lens, and further improving the working efficiency during long-term use, eliminating the trouble of ash cleaning, and further improving the convenience of use and the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 is a schematic internal structure diagram of a desulfurization and denitrification device for steel sintering flue gas proposed by the present utility model;

[0023] Figure 2 is a front view of a desulfurization and denitrification device for steel sintering flue gas proposed by the present utility model;

[0024] Figure 3 is a schematic external structure diagram of a desulfurization and denitrification device for steel sintering flue gas proposed by the present utility model;

[0025] Figure 4 is a schematic structural diagram of the cleaning strip proposed by the present utility model.

[0026] In the figure:

[0027] 1. Processing tank; 2. Water spraying tank; 3. Drain pipe; 4. Side box; 5. Water suction pipe; 6. Liquid level switch; 7. Sewage pump; 8. Water inlet pipe; 9. Self-cleaning filter; 10. Water delivery pipe; 11. Shunt pipe; 12. Spraying head; 13. Air inlet pipe; 14. Catalyst plate; 15. Lens; 16. Reciprocating lead screw; 17. Rotary connecting seat; 18. Cleaning strip; 19. Driving motor; 20. Guide rod; 21. Exhaust pipe; 22. Support; 23. UV lamp installation box; 24. Scraping strip. Detailed implementation manners

[0028] To further illustrate each embodiment, the present utility model provides attached drawings, which are a part of the disclosure of the present utility model. They are mainly used to illustrate the embodiments and can be combined with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0029] According to an embodiment of the present utility model, a steel sintering flue gas desulfurization and denitrification device is provided.

[0030] Now, the present utility model will be further described in conjunction with the attached drawings and specific implementation manners, as Figures 1-4As shown in the figure, a desulfurization and denitrification device for steel sintering flue gas according to an embodiment of the present invention includes a treatment tank 1 and a water spraying tank 2. A water spraying tank 2 is fixedly installed at the top inside the treatment tank 1, and a self-cleaning filter 9 and a water delivery pipe 10 are fixedly installed on the top surface of the treatment tank 1. The output end of the self-cleaning filter 9 is connected to the water delivery pipe 10 in a through manner. A shunt pipe 11 is connected to the surface of the water delivery pipe 10 in a through manner, and the shunt pipe 11 penetrates and extends into the water spraying tank 2. The other end of the shunt pipe 11 is connected to a spray head 12 in a through manner. Among them, multiple groups of spray heads 12 are arranged at equal intervals, and the water outlet direction of the spray head 12 is downward. An air inlet pipe 13 is connected to the top of the treatment tank 1 in a through manner, and the air inlet pipe 13 extends below the spray head 12. A side box 4 is fixedly installed on the other side surface of the treatment tank 1, and a sewage pump 7 is fixedly installed on the top surface of the side box 4. The output end of the sewage pump 7 is connected to the input end of the self-cleaning filter 9 through a water inlet pipe 8. The bottom of the water spraying tank 2 is connected to the side box 4 through a drain pipe 3. Inside the treatment tank 1, a catalyst plate 14 is fixedly installed below the water spraying tank 2. The inside of the catalyst plate 14 is a hollow structure, and the surface of the catalyst plate 14 is a hollowed-out structure. And a catalyst is placed inside the catalyst plate 14. The catalyst is an SCR desulfurization catalyst or a desulfurization catalyst. A lens 15 is embedded in the front facade of the treatment tank 1 on one side of the catalyst plate 14. And an ultraviolet lamp installation box 23 is fixedly installed on the front facade of the treatment tank 1 outside the lens 15. An ultraviolet lamp is fixedly installed inside the ultraviolet lamp installation box 23. On both sides of the lens 15, a reciprocating screw rod 16 and a guide rod 20 are respectively arranged inside the treatment tank 1. And a cleaning strip 18 is arranged inside the lens 15. And a scraping strip 24 is fixedly installed on one side surface of the cleaning strip 18. The scraping strip 24 is slidably abutted against the inner surface of the lens 15. The reciprocating screw rod 16 penetrates through the cleaning strip 18 and is threadedly connected to the cleaning strip 18. The guide rod 20 penetrates through the cleaning strip 18 and is slidably connected to the cleaning strip 18. One end of the reciprocating screw rod 16 penetrates through the bottom surface of the treatment tank 1 and is rotatably connected to the treatment tank 1. And the other end of the reciprocating screw rod 16 is rotatably connected to the bottom surface of the water spraying tank 2 through a rotary connecting seat 17. Both ends of the guide rod 20 are fixedly connected to the inner top surface and the inner bottom surface of the treatment tank 1. A driving motor 19 is fixedly installed at one end of the bottom surface of the treatment tank 1. And the output end of the driving motor 19 is fixedly connected to one end of the reciprocating screw rod 16. An exhaust pipe 21 is connected to the bottom of the treatment tank 1 in a through manner. When removing solid impurities from the flue gas, the flue gas can be transported into the water spraying tank 2 through the air inlet pipe 13. The sewage pump 7 pumps the water inside the side box 4, and after being filtered by the self-cleaning filter 9, it enters the shunt pipe 11 along the water delivery pipe 10 and is sprayed out through the spray head 12. The solid impurities are removed by spray washing with water. After the solid impurities are mixed with water, they enter the side box 4 along the drain pipe 3 to complete the water cycle. During the water cycle, the self-cleaning filter 9 filters the water and completes automatic cleaning, saving the trouble of manual frequent cleaning of the filter screen and improving the convenience of use. At the same time, after the sintering flue gas from which the solid impurities have been removed moves downward and contacts the catalyst plate 14. At the same time,The ultraviolet lamp inside the ultraviolet lamp installation box 23 is started, triggering the catalytic reaction process through ultraviolet rays to complete desulfurization and denitrification. During the catalytic reaction, the driving motor 19 drives the reciprocating screw rod 16 to rotate, thereby driving the cleaning strip 18 and the scraping strip 24 to reciprocate up and down. The scraping strip 24 scrapes off the water vapor and impurities on the surface of the lens 15, improving the light transmittance of the lens 15, thereby improving the working efficiency during long-term use, eliminating the trouble of ash cleaning, and further improving the convenience and working efficiency of use.

[0031] In one embodiment, the water inlet end of the sewage pump 7 is connected to the inside of the side box 4 through a water suction pipe 5, and the bottom opening of the water suction pipe 5 extends below the drain pipe 3, facilitating the sewage pump 7 to pump water.

[0032] In one embodiment, a solenoid valve is installed on the surface of the drain pipe 3, a liquid level switch 6 is installed inside the water spraying tank 2, and the output end of the liquid level switch 6 is electrically connected to the input end of the solenoid valve. The lowest liquid level at which the liquid level switch 6 is triggered to close is higher than the drain pipe 3, preventing flue gas from entering the side box 4.

[0033] In one embodiment, brackets 22 are fixedly installed on the bottom surfaces of both sides of the treatment box 1, and the exhaust pipe 21 passes through the brackets 22. The brackets 22 facilitate the erection of the treatment box 1.

[0034] In one embodiment, one end of the reciprocating screw rod 16 is rotationally connected to the bottom surface of the treatment box 1 through a sealed bearing, and the reciprocating screw rod 16 is arranged in parallel with the guide rod 20. The guide rod 20 plays a guiding role, facilitating the stable up and down movement of the cleaning strip 18.

[0035] In one embodiment, a sealed door is hinged on the back surface of the treatment box 1, facilitating opening for cleaning. This is a common structure in the art and is not shown in the figure.

[0036] In one embodiment, the distance between the catalyst plate 14 and the lens 15 is greater than the thickness of the cleaning strip 18 and the scraping strip 24, facilitating the up and down movement of the cleaning strip 18.

[0037] Working principle:

[0038] When removing solid impurities from flue gas, the flue gas can be transported to the flushing tank 2 through the intake pipe 13. The sewage pump 7 pumps the water inside the side tank 4, and after being filtered by the self-cleaning filter 9, it enters the shunt pipe 11 along the water delivery pipe 10 and is sprayed out through the spray heads 12. The solid impurities are removed by spray washing. After the solid impurities are mixed with water, they enter the side tank 4 along the drain pipe 3 to complete the water cycle. During the water cycle, the self-cleaning filter 9 filters the water and completes automatic cleaning, eliminating the trouble of manual frequent cleaning of the filter screen and improving the convenience of use. At the same time, the sintered flue gas after removing solid impurities moves downward and contacts the catalyst plate 14. At the same time, the ultraviolet lamp inside the ultraviolet lamp installation box 23 is started, and the catalytic reaction process is triggered by ultraviolet rays to complete desulfurization and denitrification. During the catalytic reaction, the drive motor 19 drives the reciprocating screw rod 16 to rotate, thereby driving the cleaning strip 18 and the scraping strip 24 to reciprocate up and down. The scraping strip 24 scrapes off the water vapor and impurities on the surface of the lens 15, improving the light transmittance of the lens 15, and further improving the working efficiency during long-term use. The trouble of ash cleaning is eliminated, and the convenience of use and working efficiency are further improved.

[0039] In the present utility model, unless otherwise clearly specified and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection" and the like shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0040] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A steel sintering flue gas desulfurization and denitrification equipment, characterized in that: The invention comprises a treatment box (1) and a water trough (2), wherein the top of the treatment box (1) is fixedly installed with the water trough (2), and the top surface of the treatment box (1) is fixedly installed with a self-cleaning filter (9) and a water pipe (10), and the output end of the self-cleaning filter (9) is connected to the water pipe (10), and the surface of the water pipe (10) is connected to a diversion pipe (11), and the diversion pipe (11) extends through and into the inside of the water trough (2), and the other end of the diversion pipe (11) is connected to a spray head (12), and the top of the treatment box (1) is connected to an air inlet pipe (13), and the air inlet pipe (13) extends to the inside of the water trough (2). The side box (4) is fixedly mounted on the other side of the treatment box (1), and a sewage pump (7) is fixedly mounted on the top of the side box (4), and the output end of the sewage pump (7) is connected to the input end of the self-cleaning filter (9) through the water inlet pipe (8), and the bottom of the water trough (2) is connected to the side box (4) through the drain pipe (3). A catalyst plate (14) is fixedly mounted below the water trough (2) inside the treatment box (1), and a lens (15) is embedded on one side of the catalyst plate (14) located on the front face of the treatment box (1), and the outer side of the lens (15) is located on the treatment box (1). An ultraviolet lamp installation box (23) is fixedly installed on the front face of the box (1), and an ultraviolet lamp is fixedly installed inside the ultraviolet lamp installation box (23). A reciprocating screw rod (16) and a guide rod (20) are respectively provided on both sides of the lens (15) located inside the processing box (1), and a cleaning strip (18) is provided inside the lens (15), and a scraping strip (24) is fixedly installed on one side surface of the cleaning strip (18), and the scraping strip (24) is in sliding contact with the inner surface of the lens (15). The reciprocating screw rod (16) passes through the cleaning strip (18) and is threadedly connected to the cleaning strip (18). The guide rod (20) passes through the cleaning strip (18). The guide rod (20) is passed through the cleaning strip (18) and is slidably connected to the cleaning strip (18). One end of the reciprocating screw rod (16) passes through the bottom surface of the treatment box (1) and is rotatably connected to the treatment box (1). The other end of the reciprocating screw rod (16) is rotatably connected to the bottom surface of the water trough (2) through a rotating connecting seat (17). The two ends of the guide rod (20) are respectively fixedly connected to the inner top surface and the inner bottom surface of the treatment box (1). A driving motor (19) is fixedly installed on one end of the bottom surface of the treatment box (1), and the output end of the driving motor (19) is fixedly connected to one end of the reciprocating screw rod (16). The bottom of the treatment box (1) is connected through an exhaust pipe (21).

2. The steel sintering flue gas desulfurization and denitrification equipment according to claim 1, characterized in that: The water inlet end of the sewage pump (7) is connected to the inside of the side box (4) through a water pumping pipe (5), and the bottom end of the water pumping pipe (5) extends to the bottom of the drainage pipe (3).

3. The steel sintering flue gas desulfurization and denitrification equipment according to claim 1, characterized in that: A solenoid valve is installed on the surface of the drainage pipe (3), a liquid level switch (6) is installed inside the water sprinkling tank (2), and the output end of the liquid level switch (6) is electrically connected to the input end of the solenoid valve.

4. The steel sintering flue gas desulfurization and denitrification equipment according to claim 1, characterized in that: The spray heads (12) are arranged in multiple groups at equal intervals, and the water discharge direction of the spray heads (12) is downward.

5. The steel sintering flue gas desulfurization and denitrification equipment according to claim 1, characterized in that: Brackets (22) are fixedly mounted on the bottom surfaces of both sides of the processing box (1), and the exhaust pipe (21) passes through the brackets (22).

6. The steel sintering flue gas desulfurization and denitrification equipment according to claim 1, characterized in that: One end of the reciprocating screw rod (16) is rotatably connected to the bottom surface of the processing box (1) through a sealed bearing, and the reciprocating screw rod (16) and the guide rod (20) are arranged in parallel.

7. The steel sintering flue gas desulfurization and denitrification equipment according to claim 1, characterized in that: The rear face of the processing box (1) is hinged with a sealing door.

8. The steel sintering flue gas desulfurization and denitrification equipment according to claim 1, characterized in that: The distance between the catalyst plate (14) and the lens (15) is greater than the thickness of the cleaning strip (18) and the scraping strip (24).

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