Coking flue gas desulfurization and denitrification device

Abstract

The utility model provides a coking flue gas desulfurization and denitrification device, which belongs to the technical field of flue gas purification equipment and comprises a mounting frame, a filtering component and a spraying component, a denitration tower is mounted on the surface of the mounting frame, and a desulfurization tower is mounted on one side of the denitration tower; according to the device, the smoke inlet box is arranged on one side of the bottom of the denitration tower, coking smoke enters the smoke inlet box through the smoke inlet holes, large-particle impurities in the smoke are filtered out through the coarse filter screen in the smoke inlet box, and the smoke is filtered again when passing through the fine filter screen, so that harmful fine particles are further reduced; and the filtered coking flue gas is treated in the pipeline, so that particle impurities deposited in the pipeline can be reduced, the flue gas flow is improved, and blockage is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of flue gas purification equipment, specifically a desulfurization and denitrification device for coking flue gas. Background Technology

[0002] Coking flue gas refers to the flue gas generated during coke oven production. Its main components include carbon dioxide, carbon monoxide, nitrogen, oxygen, water vapor, sulfur dioxide, and nitrogen oxides. Sulfur dioxide and nitrogen oxides are the primary pollutants, thus requiring desulfurization and denitrification equipment for treatment. Currently, in the desulfurization and denitrification process, coking flue gas is typically directly fed into desulfurization and denitrification towers without filtering out particulate matter and impurities. This can lead to blockages in the equipment's channels and pipes, affecting gas flow and treatment efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a desulfurization and denitrification device for coking flue gas, in order to solve the problem mentioned in the background art that in the existing desulfurization and denitrification process of coking flue gas, the coking flue gas is usually directly fed into the desulfurization tower and denitrification tower for treatment without filtering out particulate matter and impurities in the coking flue gas, which will lead to blockage of the device's channels and pipes, affecting the flow of flue gas and the treatment effect.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a desulfurization and denitrification device for coking flue gas, comprising a mounting frame, a filter assembly, and a spray assembly;

[0005] Wherein: a denitrification tower is installed on the surface of the mounting frame, a desulfurization tower is installed on one side of the denitrification tower, and an exhaust pipe is installed at the top of the desulfurization tower;

[0006] The filtration assembly includes a smoke inlet box installed on one side of the bottom of the denitrification tower. The surface of the smoke inlet box has smoke inlet holes. A coarse filter screen is installed inside the smoke inlet box, and a fine filter screen is installed on one side of the coarse filter screen.

[0007] The spray assembly includes a water storage tank installed on one side of the bottom of the desulfurization tower. The water storage tank contains lime solution. A water pump is installed on one side of the mounting frame. One end of the water pump is connected to the water storage tank. The water outlet of the water pump is connected to a water delivery pipe. A distribution pipe is installed at one end of the water delivery pipe. The distribution pipe is installed inside the desulfurization tower and has multiple layers. Several nozzles are fixedly installed on the surface of the distribution pipe, and the nozzles face the bottom of the desulfurization tower.

[0008] As a preferred embodiment of this utility model: the inner wall of the smoke inlet box is provided with an installation groove, and both sides of the coarse filter and the fine filter are connected with installation strips. The installation strips are slidably installed inside the installation groove, and the top of the coarse filter and the fine filter are provided with handles.

[0009] As a preferred embodiment of this utility model: a manual valve is fixedly installed on one side of the mounting frame, and an ammonia injection pipe is installed at one end of the manual valve, the ammonia injection pipe being connected to the surface of the denitrification tower.

[0010] As a preferred embodiment of this utility model: a guide pipe is installed at the top of the denitrification tower, and one end of the guide pipe is installed on one side of the surface of the desulfurization tower.

[0011] As a preferred embodiment of this utility model: a liquid level meter is installed on the surface of the water storage tank, and a backwash pipe is installed on the surface of the water storage tank.

[0012] As a preferred embodiment of this utility model, both the denitrification tower and the desulfurization tower are equipped with vent pipes at their bottom ends.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) A flue gas inlet box is provided on one side of the bottom of the denitrification tower. The coking flue gas enters the flue gas inlet box through the flue gas inlet hole. The large particulate impurities in the flue gas are filtered out by the coarse filter screen inside the flue gas inlet box. When the flue gas passes through the fine filter screen, it is filtered again to further reduce the harmful fine particles. The coking flue gas after filtration is treated here, which can reduce the deposition of particulate impurities in the pipeline, improve the flow of flue gas, and reduce the occurrence of blockage.

[0015] (2) After the water pump starts working, the lime solution inside the water storage tank is transported to the inside of the distribution pipe through the water delivery pipe. The lime solution spray is sprayed into the flue gas entering the desulfurization tower through the nozzles installed on the surface of the distribution pipe, so that the lime solution spray can fully contact the sulfides in the flue gas and achieve the desulfurization effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the filter assembly structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the spray assembly structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the ammonia injection pipeline installation structure of this utility model.

[0020] In the diagram: 1. Mounting frame; 2. Denitrification tower; 3. Desulfurization tower; 31. Exhaust pipe; 4. Filter assembly; 41. Smoke inlet box; 42. Smoke inlet hole; 43. Coarse filter screen; 44. Fine filter screen; 45. Mounting groove; 46. Mounting strip; 47. Handle; 5. Spray assembly; 51. Water storage tank; 52. Water pump; 53. Water delivery pipe; 54. Distribution pipe; 55. Nozzle; 6. Manual valve; 7. Ammonia injection pipeline; 8. Guide pipe; 9. Liquid level meter; 10. Backwash pipe; 11. Drain pipe. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please see Figures 1-4 A desulfurization and denitrification device for coking flue gas includes: a mounting frame 1, a filter assembly 4 and a spray assembly 5; a denitrification tower 2 is mounted on the surface of the mounting frame 1, a desulfurization tower 3 is mounted on one side of the denitrification tower 2, and an exhaust pipe 31 is mounted on the top of the desulfurization tower 3.

[0023] Please see Figure 1 , Figure 2 The filter assembly 4 includes a smoke inlet box 41 installed on one side of the bottom of the denitrification tower 2. The surface of the smoke inlet box 41 is provided with a smoke inlet hole 42. A coarse filter screen 43 is installed inside the smoke inlet box 41, and a fine filter screen 44 is installed on one side of the coarse filter screen 43.

[0024] In practical use: A flue gas inlet box 41 is provided on one side of the bottom of the denitrification tower 2. The coking flue gas enters the flue gas inlet box 41 through the flue gas inlet hole 42. The large particulate impurities in the flue gas are filtered out by the coarse filter screen 43 inside the flue gas inlet box 41. When the flue gas passes through the fine filter screen 44, it is filtered again to further reduce harmful fine particles. The coking flue gas after filtration is treated here, which can reduce the deposition of particulate impurities inside the pipeline, improve the flow of flue gas, and reduce the occurrence of blockage.

[0025] Please see Figure 1 , Figure 3The spray assembly 5 includes a water storage tank 51 installed on one side of the bottom of the desulfurization tower 3. The water storage tank 51 contains lime solution. A water pump 52 is installed on one side of the mounting frame 1. One end of the water pump 52 is connected to the water storage tank 51. The water outlet of the water pump 52 is connected to a water delivery pipe 53. A distribution pipe 54 is installed on one end of the water delivery pipe 53. The distribution pipe 54 is installed inside the desulfurization tower 3 and has multiple layers. Several nozzles 55 are fixedly installed on the surface of the distribution pipe 54, and the nozzles 55 face the bottom of the desulfurization tower 3.

[0026] In practical use: After the water pump 52 starts working, the lime solution inside the water storage tank 51 is transported to the distribution pipe 54 through the water delivery pipe 53. The lime solution is then sprayed onto the flue gas entering the desulfurization tower 3 through the nozzles 55 installed on the surface of the distribution pipe 54, so that the lime solution spray can fully contact the sulfides in the flue gas and achieve the desulfurization effect.

[0027] Please see Figure 1 , Figure 2 The inner wall of the smoke inlet box 41 is provided with an installation groove 45. Both sides of the coarse filter screen 43 and the fine filter screen 44 are connected with installation strips 46. The installation strips 46 are slidably installed inside the installation groove 45. The coarse filter screen 43 and the top of the coarse filter screen 44 are provided with handles 47.

[0028] In practical use: The inner wall of the smoke inlet box 41 is provided with an installation groove 45. The coarse filter screen 43 and the fine filter screen 44 are slidably installed in the installation groove 45 through the installation strips 46 on both sides. The filter screen can be easily removed by pulling the handle 47, which facilitates regular cleaning or replacement and ensures the filtration effect.

[0029] Please see Figure 4 A manual valve 6 is fixedly installed on one side of the mounting bracket 1. An ammonia injection pipe 7 is installed at one end of the manual valve 6 and is connected to the surface of the denitrification tower 2.

[0030] In practical use: A manual valve 6 is installed on one side of the mounting bracket 1, and an ammonia injection pipe 7 is installed on the other side of the manual valve 6. Ammonia gas can be injected into the denitrification tower 2 to achieve the denitrification effect.

[0031] Please see Figure 1 A guide pipe 8 is installed at the top of the denitrification tower 2, and one end of the guide pipe 8 is installed on one side of the surface of the desulfurization tower 3.

[0032] In practical use: The top of the denitrification tower 2 is equipped with a guide pipe 8. The denitrified flue gas enters the desulfurization tower 3 through the guide pipe 8 to achieve further desulfurization treatment.

[0033] Please see Figure 3 A liquid level meter 9 is installed on the surface of the water storage tank 51, and a backwash pipe 10 is installed on the surface of the water storage tank 51.

[0034] In practical use: The surface of the water storage tank 51 is equipped with a liquid level meter 9 to facilitate observation of the solution volume inside the water storage tank 51 and to facilitate regular refilling. The backwash pipe 10 facilitates internal cleaning and prevents lime solution deposits from causing pipe blockage.

[0035] Please see Figure 1 Both the denitrification tower 2 and the desulfurization tower 3 are equipped with vent pipes 11 at their bottom ends.

[0036] In practical use: the bottom of the desulfurization tower 3 and the denitrification tower 2 are equipped with a drain pipe 11 to facilitate the discharge of water inside the tower body.

[0037] A flue gas inlet box 41 is provided on one side of the bottom of the denitrification tower 2. The coking flue gas enters the flue gas inlet box 41 through the flue gas inlet hole 42. The large particulate impurities in the flue gas are filtered out by the coarse filter screen 43 inside the flue gas inlet box 41. When the flue gas passes through the fine filter screen 44, it is filtered again to further reduce harmful fine particles. The coking flue gas after filtration is treated here, which can reduce the deposition of particulate impurities inside the pipe, improve the flow of flue gas, and reduce the occurrence of blockage.

[0038] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A desulfurization and denitrification device for coking flue gas, characterized in that, include: Mounting frame (1), on the surface of the mounting frame (1) is a denitrification tower (2), on one side of the denitrification tower (2) is a desulfurization tower (3), and at the top of the desulfurization tower (3) is an exhaust pipe (31). The filter assembly (4) includes a smoke inlet box (41) installed on one side of the bottom of the denitrification tower (2). The surface of the smoke inlet box (41) is provided with a smoke inlet hole (42). A coarse filter screen (43) is installed inside the smoke inlet box (41). A fine filter screen (44) is installed on one side of the coarse filter screen (43). The spray assembly (5) includes a water storage tank (51) installed on one side of the bottom of the desulfurization tower (3). The water storage tank (51) contains lime solution. A water pump (52) is installed on one side of the mounting frame (1). One end of the water pump (52) is connected to the water storage tank (51). The outlet end of the water pump (52) is connected to a water delivery pipe (53). One end of the water delivery pipe (53) is equipped with a distribution pipe (54). The distribution pipe (54) is installed inside the desulfurization tower (3) and has multiple layers. Several nozzles (55) are fixedly installed on the surface of the distribution pipe (54). The nozzles (55) face the bottom of the desulfurization tower (3).

2. The coking flue gas desulfurization and denitrification device according to claim 1, characterized in that: The inner wall of the smoke inlet box (41) is provided with an installation groove (45). The coarse filter (43) and the fine filter (44) are connected to the two sides with installation strips (46). The installation strips (46) are slidably installed inside the installation groove (45). The top of the coarse filter (43) and the fine filter (44) are provided with handles (47).

3. The coking flue gas desulfurization and denitrification device according to claim 1, characterized in that: A manual valve (6) is fixedly installed on one side of the mounting bracket (1), and an ammonia injection pipe (7) is installed at one end of the manual valve (6). The ammonia injection pipe (7) is connected to the surface of the denitrification tower (2).

4. The desulfurization and denitrification device for coking flue gas according to claim 1, characterized in that: The top of the denitrification tower (2) is equipped with a guide pipe (8), and one end of the guide pipe (8) is installed on one side of the surface of the desulfurization tower (3).

5. The desulfurization and denitrification device for coking flue gas according to claim 1, characterized in that: A level gauge (9) is installed on the surface of the water storage tank (51), and a backwash pipe (10) is installed on the surface of the water storage tank (51).

6. The coking flue gas desulfurization and denitrification device according to claim 1, characterized in that: Both the denitrification tower (2) and the desulfurization tower (3) are equipped with vent pipes (11) at their bottom ends.

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