Kiln tail flue gas efficient purification device

Abstract

The utility model relates to the technical field of flue gas purification, in particular to an efficient purification device for kiln tail flue gas. According to the technical scheme, the device comprises a shell, a supporting frame, a flow dividing pipe and a lead screw body, a connecting cover is inserted into the outer wall of one side of the shell, a power structure is installed on one side of the upper end of the inner wall of the connecting cover, a ventilation pipe is installed on the outer wall of one side of the power structure, and the supporting frame is installed on one side of the lower end of the inner wall of the connecting cover; a lead screw body is arranged in the supporting frame, a supporting plate is installed on the outer wall of the upper end of the lead screw body, and by arranging the lead screw body, the supporting plate and a brush, the effect of cleaning the flow dividing pipe is achieved, the flow dividing pipe is prevented from being blocked, the cleanliness of the flow dividing pipe is guaranteed, and the discharging smoothness of gas passing through the flow dividing pipe is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas purification, in particular to a high-efficiency purification device for kiln tail flue gas. Background Art

[0002] NOx is an important precursor to photochemical pollution and is also an important cause of regional fine particle pollution and haze. The cement industry's NOx emissions account for about 10% of the country's total emissions, ranking after thermal power generation and automobile exhaust emissions, and is a key pollution control industry. Domestic cement companies are currently implementing ultra-low emissions, and the mainstream denitrification process uses the SCR denitrification process, which uses a catalyst to catalyze the reaction of ammonia and nitrogen oxides to generate nitrogen.

[0003] Patent announcement number CN218627807U discloses an integrated device for waste heat boiler and SCR denitrification at the tail of cement kiln. The device adopts a vertical structure, and includes the device inlet, waste heat boiler, pre-ash removal structure, SCR denitrification reactor and device outlet from top to bottom. The waste heat boiler includes an evaporator, a superheater and a drum. The pre-ash removal structure includes a flue gas guide plate, an ash catcher and a fly ash bin. The SCR denitrification reactor includes a catalyst module layer, which is composed of a combination of catalyst modules. The catalyst module is a porous through-structure, and the flue gas passes through the holes of the catalyst module to achieve NOx removal. The utility model has a compact structure, a small footprint, and low heat loss in the system after actual application; multi-stage ash cleaning is achieved through a mechanical vibration device, a pre-ash removal structure, and a rake-type soot blower, which can effectively reduce the wear of fly ash particles on the denitrification catalyst, thereby reducing the risk of blockage of SCR denitrification.

[0004] Although the prior art CN218627807U has many benefits during use, it still has the following problems: it lacks a cleaning structure for the nozzle of the rake soot blower, which causes the gas ejection of the rake soot blower to be unsmooth. Utility Model Content

[0005] The purpose of the utility model is to provide a high-efficiency purification device for kiln tail flue gas to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-efficiency purification device for kiln tail flue gas, comprising an outer shell, a support frame, a diverter pipe and a screw body, a connecting cover is plugged into and installed on the outer wall of one side of the outer shell, a power structure is installed on one side of the upper end of the inner wall of the connecting cover, a ventilation pipe is installed on the outer wall of one side of the power structure, a support frame is installed on one side of the lower end of the inner wall of the connecting cover, a screw body is arranged inside the support frame, and a support plate is installed on the outer wall of the upper end of the screw body.

[0007] When using a high-efficiency purification device for kiln tail flue gas in the technical solution, the flue gas flows inside the outer shell, and is discharged after being catalytically reduced by the catalyst body and external ammonia water, and the power structure drives the ventilation pipe and the diverter pipe to move horizontally, the diverter pipe is driven to move to the inside of the outer shell, and the gas is ejected through the diverter pipe, thereby achieving the purpose of cleaning the upper end of the catalyst body. After the diverter pipe is reset, the electric push rod drives the support plate and the brush to move reciprocatingly horizontally, and the brush cleans the outer wall of the diverter pipe.

[0008] Preferably, a catalyst body is installed on one side of the inner wall of the shell, and the connecting cover is located at the upper end of the catalyst body. The catalyst body can catalytically treat the flue gas inside the shell.

[0009] Preferably, the connection cover is designed in a rectangular shape, and the connection cover is connected to the inside of the shell.

[0010] Preferably, the outer walls on both sides of the ventilation pipe are plugged with equidistant and parallel distribution of diverter pipes, and the outer wall at the lower end of the diverter pipe is plugged with equidistant and parallel distribution of nozzles. Gas enters the ventilation pipe and the diverter pipe, and is ejected through the nozzle.

[0011] Preferably, the lead screw body passes through the outer wall of one end of the support frame and is provided with a motor body, and the motor body is connected to the outer wall of the support frame. The motor body drives the lead screw body to ensure the reciprocating motion of the support plate.

[0012] Preferably, a brush is provided on the outer wall of the upper end of the support plate, and the brush is in contact with the outer wall of the lower end of the diverter tube. The brush can clean the diverter tube.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model achieves the effect of cleaning the shunt pipe by arranging a screw body, a support plate and a brush, the flue gas flows inside the outer shell, and the flue gas is discharged after being catalytically reduced by the catalyst body and the external ammonia water, and the power structure drives the ventilation pipe and the shunt pipe to move horizontally, the shunt pipe is driven to move inside the outer shell, and the gas is ejected through the shunt pipe, thereby achieving the purpose of cleaning the upper end of the catalyst body, and after the shunt pipe is reset, the electric push rod drives the support plate and the brush to move reciprocatingly horizontally, and the brush cleans the outer wall of the shunt pipe to avoid blockage of the shunt pipe, thereby ensuring the cleanliness of the shunt pipe and ensuring the smoothness of the gas discharge through the shunt pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the appearance of the shell structure of the utility model;

[0015] Figure 2 It is a schematic cross-sectional view of the connection cover structure of the utility model;

[0016] Figure 3It is an enlarged schematic diagram of the support frame structure of the utility model.

[0017] In the figure: 1. outer shell; 11. catalyst body; 12. connecting cover; 13. power structure; 14. ventilation pipe; 15. diverter pipe; 2. support frame; 21. screw body; 22. support plate; 23. brush. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 3 , the utility model provides two embodiments:

[0020] Embodiment 1: A high-efficiency purification device for kiln tail flue gas comprises an outer shell 1, a support frame 2, a diverter pipe 15 and a screw body 21. A connecting cover 12 is plugged into and installed on the outer wall of one side of the outer shell 1, a power structure 13 is installed on one side of the upper end of the inner wall of the connecting cover 12, a ventilation pipe 14 is installed on the outer wall of one side of the power structure 13, a support frame 2 is installed on one side of the lower end of the inner wall of the connecting cover 12, a screw body 21 is arranged inside the support frame 2, and a support plate 22 is installed on the outer wall of the upper end of the screw body 21.

[0021] A catalyst body 11 is installed on one side of the inner wall of the housing 1, and a connecting cover 12 is located at the upper end of the catalyst body 11. The catalyst body 11 can catalytically treat the flue gas inside the housing 1.

[0022] The connecting cover 12 is designed in a rectangular shape, and the connecting cover 12 is connected to the inside of the shell 1. The flue gas flows inside the shell 1, and the flue gas is discharged after being catalytically reduced by the catalyst body 11 and the external ammonia water.

[0023] Embodiment 2: A high-efficiency purification device for kiln tail flue gas comprises an outer shell 1, a support frame 2, a diverter pipe 15 and a screw body 21. A connecting cover 12 is plugged into and installed on the outer wall of one side of the outer shell 1, a power structure 13 is installed on one side of the upper end of the inner wall of the connecting cover 12, a ventilation pipe 14 is installed on the outer wall of one side of the power structure 13, a support frame 2 is installed on one side of the lower end of the inner wall of the connecting cover 12, a screw body 21 is arranged inside the support frame 2, and a support plate 22 is installed on the outer wall of the upper end of the screw body 21.

[0024] A catalyst body 11 is installed on one side of the inner wall of the housing 1, and a connecting cover 12 is located at the upper end of the catalyst body 11. The catalyst body 11 can catalytically treat the flue gas inside the housing 1.

[0025] The connection cover 12 is designed in a rectangular shape, and the connection cover 12 is connected to the inside of the housing 1 .

[0026] The outer walls of both sides of the vent pipe 14 are plugged with equidistant and parallel distribution of the diverter pipes 15, and the outer wall of the lower end of the diverter pipe 15 is plugged with equidistant and parallel distribution of the nozzles. The gas enters the vent pipe 14 and the diverter pipe 15, and is ejected through the nozzles.

[0027] The lead screw body 21 passes through the outer wall of one end of the support frame 2 and is provided with a motor body, and the motor body is connected to the outer wall of the support frame 2. The motor body drives the lead screw body 21 to ensure the reciprocating motion of the support plate 22.

[0028] A brush 23 is provided on the outer wall of the upper end of the support plate 22, and the brush 23 contacts the outer wall of the lower end of the shunt pipe 15. The brush 23 can clean the shunt pipe 15. The flue gas flows inside the housing 1, and the flue gas is discharged after being catalytically reduced by the catalyst body 11 and the external ammonia water. The power structure 13 drives the vent pipe 14 and the shunt pipe 15 to move horizontally, and the shunt pipe 15 is driven to move inside the housing 1, and the gas is ejected through the shunt pipe 15, so as to achieve the purpose of cleaning the upper end of the catalyst body 11. After the shunt pipe 15 is reset, the electric push rod drives the support plate 22 and the brush 23 to move horizontally back and forth, and the brush 23 cleans the outer wall of the shunt pipe 15 to prevent the shunt pipe 15 from being blocked, thereby ensuring the cleanliness of the shunt pipe 15 and ensuring the smoothness of the gas discharge through the shunt pipe 15.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A kiln tail flue gas high efficiency purification device, comprising a housing (1), a support frame (2), a shunt pipe (15) and a screw body (21), characterized in that: A connecting cover (12) is plugged and installed on the outer wall of one side of the housing (1); a power structure (13) is installed on one side of the upper end of the inner wall of the connecting cover (12); a ventilation pipe (14) is installed on one side of the outer wall of one side of the power structure (13); a support frame (2) is installed on one side of the lower end of the inner wall of the connecting cover (12); a lead screw body (21) is arranged inside the support frame (2); and a support plate (22) is installed on the outer wall of the upper end of the lead screw body (21).

2. The high-efficiency purification device for kiln tail flue gas according to claim 1 is characterized in that: A catalyst body (11) is installed on one side of the inner wall of the shell (1), and a connecting cover (12) is located at the upper end of the catalyst body (11).

3. The high-efficiency purification device for kiln tail flue gas according to claim 1 is characterized in that: The connection cover (12) is designed in a rectangular shape, and the connection cover (12) is connected to the interior of the housing (1).

4. The high-efficiency purification device for kiln tail flue gas according to claim 1 is characterized in that: The outer walls on both sides of the ventilation pipe (14) are plugged and installed with equidistant and parallel distributed flow dividers (15), and the outer walls at the lower ends of the flow dividers (15) are plugged and installed with equidistant and parallel distributed spray heads.

5. The high-efficiency purification device for kiln tail flue gas according to claim 1 is characterized in that: The lead screw body (21) passes through the outer wall of one end of the support frame (2), and a motor body is provided thereon, and the motor body is connected to the outer wall of the support frame (2).

6. The high-efficiency purification device for kiln tail flue gas according to claim 1 is characterized in that: The outer wall of the upper end of the support plate (22) is provided with a brush (23), and the brush (23) is in contact with the outer wall of the lower end of the diversion pipe (15).

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