Cement kiln denitration device capable of uniformly distributing reducing agent

Abstract

The utility model relates to the technical field of cement kiln denitration, and discloses a cement kiln denitration device capable of uniformly distributing a reducing agent. The cement kiln denitration device capable of uniformly distributing the reducing agent comprises a denitration device body, reducing agent uniform spraying mechanisms are installed on the four sides of the upper portion of the denitration device body, a heat sufficient contact mechanism is installed in the middle of the interior of the denitration device body, and each reducing agent uniform spraying mechanism comprises a reducing agent barrel installed on the four sides of the upper portion of the denitration device body. According to the denitration device, the central column is arranged in the denitration device, the fan blades are arranged outside the central column, the fan blades rotate through the motor, and the fan blades are located in the middle of the interior of the denitration device, so that a sprayed reducing agent and nitric oxide can be fully mixed, and the nitric oxide is promoted to be reasonably volatilized; meanwhile, the fan blades are arranged, so that the flowability in the denitration device is enhanced, nitrogen oxides are conveniently and quickly discharged, and gas accumulation is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of cement kiln denitration, in particular to a cement kiln denitration device capable of evenly distributing a reducing agent. Background Art

[0002] During the cement production process, the flue gas produced by the kiln contains a large amount of nitrogen oxides, which are one of the main sources of air pollution. In order to reduce the emission of these harmful gases, cement plants have introduced denitrification equipment. The main function of cement denitrification equipment is to reduce the emission of nitrogen oxides (NOx) to improve air quality and reduce pollution to the environment. To this end, a cement kiln denitrification device with uniformly distributed reducing agent is proposed.

[0003] The existing referenceable Chinese utility model patent with announcement number CN219815835U discloses a cement kiln denitrification device, which belongs to the field of cement kiln denitrification technology. In this technical solution, it includes a reactor, a treatment device is provided on the surface of the reactor, an acid inlet device is provided on the top of the reactor, and the acid inlet device includes a first placement ring frame, an acid cylinder, a liquid infusion pipe, a sealing top cover, a connecting bottom plate, a side end liquid pump, a liquid outlet pipe, an adjustable telescopic pipe, a liquid outlet nozzle, a side end limit frame, a connecting pipe and an acid spraying ring pipe. The cement kiln denitrification device is provided with an acid inlet device, which can be adjusted by pulling the adjustable telescopic pipe to adjust the length and direction, and can spray different positions, and when adjusting, all need to be adjusted to the same degree. The acid spraying pipe used when acid is added is annular, and the nozzle direction can be adjusted, so that the acid can be sprayed evenly to the inside of the cement kiln. The denitrification inside the cement kiln can be uniform, without causing uneven denitrification, and without affecting the denitrification quality, and the effect is good when used.

[0004] Based on the search of the above patents and combined with the equipment in the prior art, it was found that since a large amount of nitrogen oxides are generated during the cement production process, the nitrogen oxides do not react evenly with the reducing agent during the treatment process, resulting in the nitrogen oxide emission index not meeting the standard. The existence of these problems has affected the use of the device. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides a cement kiln denitration device that evenly distributes reducing agents, which has the advantages of uniform cement denitration reaction and solves the above-mentioned technical problems.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: a cement kiln denitration device for uniformly distributing a reducing agent, comprising a denitration device, wherein reducing agent uniform spraying mechanisms are installed on four sides of the upper portion of the denitration device, and a heat sufficient contact mechanism is installed in the middle of the inner portion of the denitration device, wherein the reducing agent uniform spraying mechanisms comprise: reducing agent barrels installed on four sides of the upper portion of the denitration device, wherein a feed port is installed above the reducing agent barrel, a center ring is connected to the middle of the reducing agent barrel, and a connecting pipe is connected to the lower portion of the reducing agent barrel, a discharge pipe for circulating the agent is connected to the lower portion of the connecting pipe, a presser is movably installed on one side of the discharge pipe, and a distribution ring is connected to the lower portion of the discharge pipe, and a sprayer for uniformly spraying the agent is installed obliquely below the distribution ring;

[0009] The heat sufficient contact mechanism includes: a central column installed in the middle of the denitrification device, a motor installed above the central column, and a fan blade for gas mixing installed in an outer ring of the central column, and a connecting rod connected to the outer ring of the central column.

[0010] As a preferred technical solution of the present invention, the upper midpoint of the denitrification device is connected to a pipeline, and the end of the pipeline is connected to a rotary kiln body; the rotary kiln body processes the gas.

[0011] As the preferred technical solution of the present invention, both ends of the rotary kiln body are connected with connecting pipe bodies, a one-way valve is installed in the middle of the connecting pipe body on the right side, and fixing bolts are installed on both sides of the connecting pipe body; the one-way valve controls the gas.

[0012] As the preferred technical solution of the present invention, the reducing agent barrel is embedded in the four sides of the denitrification device, and the reducing agent barrel and the center ring are interconnected, and the center ring is located above the interior of the denitrification device. The center ring is connected to the sprayer through a connecting pipe, a discharge pipe, and a distribution ring channel, and the number of sprayers is several; the reducing agent barrel is used to install the ingredients.

[0013] As the preferred technical solution of the present invention, the fan blades are arranged in four groups, and the fan blades form a rotational connection relationship between the central column and the motor, and the central column is connected to the denitrification device through a connecting rod; the fan blades enable the reducing agent and nitrogen oxides to be fully mixed.

[0014] As a preferred technical solution of the present invention, the diameters of the connecting pipe body and the pipeline are consistent, and the connecting pipe body and the rotary kiln body are interconnected; the connecting pipe body allows gas to circulate.

[0015] As a preferred technical solution of the present invention, the pipeline and the denitrification device are interconnected, and the denitrification device is larger at the bottom and smaller at the top; the pipeline processes the nitrogen oxides and transfers them to the equipment of the next procedure.

[0016] Compared with the prior art, the present invention provides a cement kiln denitrification device with uniformly distributed reducing agent, which has the following beneficial effects:

[0017] 1. The utility model installs reducing agent barrels on the four sides above the denitrification device, and the reducing agent is placed inside the reducing agent barrel. A center ring is interconnected in the middle of the reducing agent barrel. The lower part of the center ring is respectively connected to a connecting pipe, a discharge pipe, a distribution ring and a sprayer. A presser is provided on one side of the discharge pipe. The presser presses the reducing agent inside the discharge pipe so that the reducing agent inside the discharge pipe is evenly sprayed into the denitrification device through the distribution ring and the sprayer, allowing the reducing agent to react with nitrogen oxides, thereby facilitating the reasonable emission of nitrogen oxides and ensuring that the nitrogen oxide emission index meets the standard.

[0018] 2. The utility model is provided with a central column inside the denitrification device, and fan blades are provided outside the central column. The fan blades are rotated by a motor, and the fan blades are located in the middle of the denitrification device. The sprayed reducing agent and nitrogen oxides can be fully mixed to promote the reasonable volatilization of nitrogen oxides. At the same time, the setting of the fan blades enhances the fluidity inside the denitrification device, facilitates the rapid discharge of nitrogen oxides, and prevents gas accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the reducing agent barrel assembly of the utility model structure;

[0021] Figure 3 This is a schematic diagram of the internal components of the denitrification device of the utility model;

[0022] Figure 4 This is a schematic diagram of the rotary kiln assembly structure of the utility model;

[0023] Among them: 1. Denitrification device; 11. Center column; 12. Motor; 13. Fan blades; 14. Connecting rod; 2. Reductant barrel; 21. Feed inlet; 22. Center ring; 23. Connecting pipe; 24. Discharge pipe; 25. Presser; 26. Distribution ring; 27. Sprayer; 3. Pipeline; 4. Rotary kiln body; 41. Connecting pipe body; 42. One-way valve; 43. Fixing bolts. DETAILED DESCRIPTION

[0024] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] See also Figure 1 — Figure 4 In this embodiment, a cement kiln denitrification device for uniformly distributing a reducing agent includes a denitrification device 1, wherein a reducing agent uniform spraying mechanism is installed on four sides above the denitrification device 1, and a heat sufficient contact mechanism is installed in the middle of the denitrification device 1, and the heat sufficient contact mechanism includes: a central column 11 installed in the middle of the denitrification device 1, a motor 12 is installed above the central column 11, and fan blades 13 are installed in an outer ring of the central column 11, and a connecting rod 14 is connected to the outer ring of the central column 11; the fan blades 13 are arranged in four groups, and the fan blades 13 form a rotational connection relationship between the central column 11 and the motor 12, and the central column 11 is connected to the denitrification device 1 through the connecting rod 14.

[0028] Specifically, a central column 11 is provided in the middle of the denitrification device 1, and fan blades 13 are installed on the outside of the central column 11. The fan blades 13 are provided in multiple groups, and the fan blades 13 are rotated by a motor 12 above the central column 11. When the fan blades 13 rotate, the reducing agent and nitrogen oxides can be quickly mixed, thereby accelerating the volatilization effect and speed of the nitrogen oxides, and at the same time completely discharging the gas inside the denitrification device 1.

[0029] The reducing agent uniform spraying mechanism includes: a reducing agent barrel 2 installed on the four sides above the denitrification device 1, a feed port 21 is installed above the reducing agent barrel 2, and a center ring 22 is connected to the middle of the reducing agent barrel 2, and a connecting pipe 23 is connected to the bottom of the reducing agent barrel 2, and a discharge pipe 24 is connected to the bottom of the connecting pipe 23, and a presser 25 is movably installed on one side of the discharge pipe 24, and a distribution ring 26 is connected to the bottom of the discharge pipe 24, and a sprayer 27 is installed obliquely below the distribution ring 26; the reducing agent barrel 2 is embedded in the four sides of the denitrification device 1, and the reducing agent barrel 2 and the center ring 22 are interconnected, and the center ring 22 is located above the interior of the denitrification device 1, and the center ring 22 is connected to the sprayer 27 through the connecting pipe 23, the discharge pipe 24, and the distribution ring 26, and the number of sprayers 27 is several.

[0030] Specifically, reducing agent barrels 2 are installed on the four sides above the denitrification device 1. The reducing agent barrels 2 are used to store the reducing agent, and a center ring 22 is interconnected in the middle of the reducing agent barrel 2. The bottom of the center ring 22 is connected to a connecting pipe 23, a discharge pipe 24, a distribution ring 26, and a sprayer 27. A presser 25 is provided on one side of the discharge pipe 24. The presser 25 presses the material inside the discharge pipe 24 and discharges it evenly through the distribution ring 26 and the sprayer 27, so that the reducing agent is evenly sprayed.

[0031] The upper midpoint of the denitrification device 1 is connected to a pipe 3, and the end of the pipe 3 is connected to a rotary kiln body 4; both ends of the rotary kiln body 4 are connected to a connecting pipe body 41, and a one-way valve 42 is installed in the middle of the connecting pipe body 41 on the right, and fixing bolts 43 are installed on both sides of the connecting pipe body 41; the diameter of the connecting pipe body 41 is consistent with that of the pipe 3, and the connecting pipe body 41 and the rotary kiln body 4 are interconnected; the pipe 3 and the denitrification device 1 are interconnected, and the denitrification device 1 is larger at the bottom and smaller at the top.

[0032] Specifically, a pipe 3 is connected to the top of the denitrification device 1, and the pipe 3 and the denitrification device 1 are interconnected. The rotary kiln body 4 is connected to the end of the pipe 3. Fixing bolts 43 are provided on both sides of the rotary kiln body 4. The setting of the fixing bolts 43 fixes the connecting pipe body 41 and the rotary kiln body 4. The setting of the one-way valve 42 controls the gas flow direction inside the denitrification device 1 and the rotary kiln body 4.

[0033] When in use, reducing agent barrels 2 are installed on the four sides above the denitrification device 1. A feed port 21 is provided above each reducing agent barrel 2. The feed port 21 is used to install the reducing agent. A center ring 22 is provided in the middle of the reducing agent barrel 2. The center ring 22 unifies the reducing agent inside the reducing agent barrel 2. A connecting pipe 23, a discharge pipe 24, a distribution ring 26, and a sprayer 27 are connected to the bottom of the reducing agent barrel 2. A presser 25 is provided on one side of the discharge pipe 24. The presser 25 presses the material inside the discharge pipe 24 and discharges it from the sprayer 27. The sprayer 27 has a large number of Distributed inside the denitrification device 1, the reducing agent is evenly sprayed out and mixed with the nitrogen oxides. During the mixing, a central column 11 is installed in the middle of the interior of the denitrification device 1, and a fan blade 13 is installed on the outside of the central column 11. The fan blade 13 is rotated by the motor 12 above the central column 11, thereby driving the nitrogen oxides inside the denitrification device 1 to mix, and also allowing the gas to be quickly discharged. Finally, after the mixing is completed, a pipeline 3 is connected above the denitrification device 1, and the end of the pipeline 3 is connected to the rotary kiln body 4. The one-way valve 42 on one side of the rotary kiln body 4 is opened to allow the gas to flow into the next processing procedure.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cement kiln denitration device for uniformly distributing a reducing agent, comprising a denitration device (1), wherein the four upper sides of the denitration device (1) are provided with a reducing agent uniform spraying mechanism, and the middle of the denitration device (1) is provided with a heat sufficient contact mechanism, characterized in that: The reducing agent uniform spraying mechanism comprises: a reducing agent barrel (2) installed on four sides above the denitrification device (1), a feed port (21) installed above the reducing agent barrel (2), a center ring (22) connected in the middle of the reducing agent barrel (2), a connecting pipe (23) connected below the reducing agent barrel (2), a discharge pipe (24) connected below the connecting pipe (23), a presser (25) movably installed on one side of the discharge pipe (24), a distribution ring (26) connected below the discharge pipe (24), and a sprayer (27) obliquely installed below the distribution ring (26); The heat sufficient contact mechanism comprises: a central column (11) installed in the middle of the denitrification device (1), a motor (12) installed above the central column (11), a fan blade (13) installed in an outer ring shape of the central column (11), and a connecting rod (14) connected to the outer ring shape of the central column (11).

2. The cement kiln denitration device with uniform distribution of reducing agent according to claim 1, characterized in that: The upper midpoint of the denitrification device (1) is connected to a pipeline (3), and the end of the pipeline (3) is connected to a rotary kiln body (4).

3. The cement kiln denitration device with uniform distribution of reducing agent according to claim 2, characterized in that: Both ends of the rotary kiln body (4) are connected with connecting pipe bodies (41), a one-way valve (42) is installed in the middle of the connecting pipe body (41) on the right side, and fixing bolts (43) are installed on both sides of the connecting pipe body (41).

4. The cement kiln denitration device with uniform distribution of reducing agent according to claim 1, characterized in that: The reducing agent barrel (2) is embedded in the four sides of the denitration device (1), and the reducing agent barrel (2) and the center ring (22) are interconnected. The center ring (22) is located above the interior of the denitration device (1). The center ring (22) is connected to the sprayer (27) through the connecting pipe (23), the discharge pipe (24), and the distribution ring (26), and the number of the sprayers (27) is several.

5. The cement kiln denitration device with uniform distribution of reducing agent according to claim 1, characterized in that: The fan blades (13) are arranged in four groups, and the fan blades (13) are connected to the motor (12) through the central column (11), and the central column (11) is connected to the denitrification device (1) through the connecting rod (14).

6. The cement kiln denitration device with uniform distribution of reducing agent according to claim 3, characterized in that: The connecting pipe body (41) and the pipeline (3) have the same diameter, and the connecting pipe body (41) and the rotary kiln body (4) are interconnected.

7. The cement kiln denitration device with uniform distribution of reducing agent according to claim 2, characterized in that: The pipeline (3) and the denitration device (1) are interconnected, and the denitration device (1) is larger at the bottom and smaller at the top.

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