Kiln tail equipment capable of improving desulfurization efficiency

Abstract

The invention relates to the technical field of cement production equipment accessories, in particular to kiln tail equipment capable of improving desulfurization efficiency. According to the kiln tail equipment capable of improving the desulfurization efficiency, the technical problem that in the prior art, desulfurization equipment applied to a kiln tail is poor in impurity removal effect is solved. Kiln tail equipment capable of improving desulfurization efficiency comprises a precipitation assembly and a desulfurization assembly, and gas precipitated by the precipitation assembly enters the desulfurization assembly for desulfurization; the inner barrel is arranged, the air inlet pipe is arranged in the tangential direction of the inner barrel, and air enters the inner barrel in the tangential direction of the inner barrel in the process of entering the inner barrel, so that the air forms spiral airflow in the inner barrel, impurities in the air can be thrown out under the action of centrifugal force, and the impurities move downwards along the bottom wall of the inner barrel under the action of gravity; therefore, the gas contains fewer impurities, and subsequent desulfurization of the gas is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of cement production equipment accessories, and in particular to kiln tail equipment for improving desulfurization efficiency. Background Art

[0002] Cement kilns produce a large amount of gas during operation, which is usually sulfur-containing gas. Therefore, the gas produced during the operation of cement kilns needs to be desulfurized before it can be discharged.

[0003] When desulfurization is carried out at the kiln tail, since the flue gas from the air intake pipe after cement processing will carry a lot of large and small particles of smoke, the impurities in the gas should be reduced as much as possible before desulfurization to optimize the desulfurization effect. In the prior art, the precipitation method is usually used to remove impurities in the gas. Although the precipitation method has the effect of removing impurities, the impurity removal effect is poor in actual application.

[0004] Therefore, the desulfurization equipment used at the kiln tail in the prior art has the technical problem of poor impurity removal effect. Summary of the invention

[0005] The invention provides a kiln tail equipment for improving desulfurization efficiency, which solves the technical problem that the desulfurization equipment used in the kiln tail in the prior art has poor impurity removal effect.

[0006] Some implementation plans adopted to solve the above technical problems include: A kiln tail equipment for improving desulfurization efficiency, comprising a precipitation component and a desulfurization component, wherein the gas precipitated by the precipitation component enters the desulfurization component for desulfurization; The precipitation assembly comprises an inner cylinder and an outer cylinder, the inner cylinder is provided with an air inlet pipe, the air inlet pipe is arranged along the tangential direction of the inner cylinder, the outer cylinder cover is arranged in the inner cylinder, and the top end of the inner cylinder is provided with an opening for communicating the inner cylinder with the outer cylinder, the bottom of the outer cylinder is provided with an exhaust pipe, the upper end of the exhaust pipe extends into the outer cylinder, and the upper end of the exhaust pipe protrudes from the inner side wall of the outer cylinder; The desulfurization assembly includes a desulfurization box, the exhaust pipe is connected to the desulfurization box through a connecting pipe, a doser is arranged between the exhaust pipe and the connecting pipe, the reinforcer includes a connecting ring, the inner wall of the connecting ring is provided with a dosing port, and the dosing port is evenly arranged along the circumferential direction of the connecting ring; The connecting pipe is also provided with a mixer for uniformly mixing the gas with the reagent output from the dosing port, and the desulfurization box is provided with a stirrer for stirring the gas and reagent in the desulfurization box; The airflow inputted into the inner cylinder by the air inlet pipe flows in a spiral shape, and the impurities in the gas are separated from the gas under the action of centrifugal force; A flow rate of the gas in the inner cylinder is greater than a flow rate of the gas between the inner cylinder and the outer cylinder.

[0007] Preferably, the inner cylinder is installed in the outer cylinder via a connecting plate, there are multiple connecting plates, and all the connecting plates are evenly distributed along the circumferential direction of the inner cylinder.

[0008] Preferably, the inner cylinder includes a bottom wall, and the distance between the air inlet pipe and the bottom wall is not less than 1 / 5 of the height of the inner cylinder. In addition, a dust shield is provided in the inner cylinder to prevent impurities accumulated on the bottom wall from being blown up by the airflow output by the air inlet pipe, and a gap is provided between the dust shield and the inner wall of the inner cylinder to allow impurities to pass through.

[0009] Preferably, the cross-sectional shape of the bottom wall is an arc shape, the dust shield comprises a dust shield plate and a column, the dust shield plate is fixed to the upper end of the column, the lower end of the column is fixed to the bottom wall, and the air inlet pipe is located above the dust shield plate.

[0010] Preferably, the outer cylinder is fixed to the desulfurization box by supporting feet, the desulfurization box comprises a box body and a box cover, the supporting feet are fixed to the box cover by screws, there are at least three supporting feet, and at least three supporting feet are evenly arranged along the circumferential direction of the outer cylinder.

[0011] Preferably, the mixer includes a connecting seat, which is arranged in the connecting pipe. The connecting seat is provided with an exhaust hole, and the exhaust hole is located between the connecting seat and the inner wall of the connecting pipe. The exhaust holes are evenly arranged along the circumferential direction of the connecting seat, and the connecting seat is provided with a guide for guiding the gas flow direction.

[0012] Preferably, the guide comprises a conical portion with the tip pointing upward and a cylindrical portion arranged below the conical portion, the cylindrical portion is located between the connecting seat and the conical portion, and a connecting rib is arranged at the lower end of the cylindrical portion.

[0013] Preferably, the connecting seat is provided with a column, the conical portion and the cylindrical portion are both provided on the column, and the conical portion guides the airflow to enter the cylindrical portion.

[0014] Preferably, the agitator comprises a stirring assembly and a motor for driving the stirring assembly to rotate, and the rotating shaft of the stirring assembly coincides with the axis of the connecting pipe.

[0015] Preferably, the stirring assembly comprises a stirring shaft, the stirring shaft and the output shaft of the motor are an integrated structure, the stirring shaft is provided with stirring blades, and the stirring blades are evenly arranged along the circumferential direction of the stirring shaft.

[0016] Compared with the prior art, the present invention has the following advantages: 1. By setting an inner cylinder and setting the air inlet pipe along the tangential direction of the inner cylinder, the gas enters the inner cylinder along the tangential direction of the inner cylinder, so that the gas forms a spiral airflow in the inner cylinder. Under the action of centrifugal force, impurities in the gas will be thrown out, and the impurities move downward along the bottom wall of the inner cylinder under the action of gravity, so that the gas contains fewer impurities, which is beneficial to the subsequent desulfurization of the gas.

[0017] 2. By setting an outer cylinder outside the inner cylinder, when the gas enters the area between the inner cylinder and the outer cylinder from the inner cylinder, impurities will be precipitated in the area between the outer cylinder and the inner cylinder, thereby further reducing impurities in the gas.

[0018] 3. The outer cylinder is sleeved outside the inner cylinder, making the sedimentation assembly compact in structure and small in volume, thereby reducing the space occupied by the sedimentation assembly.

[0019] 4. After being precipitated by the precipitation component, the gas enters the desulfurization component for desulfurization, which reduces the impurities in the gas and improves the desulfurization quality and desulfurization efficiency of the gas.

[0020] 5. By setting up a stirrer, the stirrer is used to stir the gas and the reagent, so that the gas and the reagent are mixed more evenly, and the desulfurization effect of the gas is further optimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] For the purpose of explanation, several embodiments of the present invention technology are described in the following drawings. The following drawings are incorporated into this text and constitute a part of the specific embodiment. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring the concept of the present invention subject technology.

[0022] Figure 1 It is a schematic diagram of the internal structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the present invention.

[0024] Figure 3 Schematic diagram of the inner cylinder.

[0025] Figure 4 Schematic diagram of the agitator.

[0026] Figure 5 Schematic diagram of the dosing device.

[0027] Figure 6 This is a schematic diagram of the mixer at the first angle.

[0028] Figure 7 This is a schematic diagram of the mixer from a second angle.

[0029] In the figure: 1. sedimentation assembly, 11. inner cylinder, 111. opening, 112. connecting plate, 113. dust blocker, 114. dust block plate, 115. column, 12. outer cylinder, 121. exhaust pipe, 122. support leg, 13. air inlet pipe.

[0030] 2. Desulfurization assembly, 21. Desulfurization box, 22. Connecting pipe, 23. Mixer, 231. Connecting seat, 232. Exhaust hole, 233. Conical part, 234. Cylindrical part, 235. Column, 24. Agitator, 241. Motor, 242. Agitator shaft, 243. Agitator blade, 25. Box body, 26. Box cover.

[0031] 3. Dosing device, 31. Dosing port. DETAILED DESCRIPTION

[0032] The specific embodiments shown below are intended to be descriptions of various configurations of the subject technology of the present invention, and are not intended to represent the only configuration that the subject technology of the present invention can be put into practice. The specific embodiments include specific details intended to provide a thorough understanding of the subject technology of the present invention. However, it will be clear and obvious to those skilled in the art that the subject technology of the present invention is not limited to the specific details shown herein, and can be put into practice without these specific details.

[0033] It can be understood that, in this document, relational terms such as “first” and “second” are intended to distinguish one entity or operation from another entity or operation, and are not intended to express or imply any actual relationship or order between these entities or operations.

[0034] The terms "comprises," "comprising," or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0035] Reference Figures 1 to 7 As shown, a kiln tail equipment for improving desulfurization efficiency comprises a precipitation component 1 and a desulfurization component 2, wherein the gas precipitated by the precipitation component 1 enters the desulfurization component 2 for desulfurization; The precipitation assembly 1 includes an inner cylinder 11 and an outer cylinder 12, the inner cylinder 11 is provided with an air inlet pipe 13, the air inlet pipe 13 is arranged along the tangential direction of the inner cylinder 11, the outer cylinder 12 is covered in the inner cylinder 11, and the top end of the inner cylinder 11 is provided with an opening 111 that enables the inner cylinder 11 and the outer cylinder 12 to communicate, and the bottom of the outer cylinder 12 is provided with an exhaust pipe 121, the upper end of the exhaust pipe 121 extends into the outer cylinder 12, and the upper end of the exhaust pipe 121 protrudes from the inner side wall of the outer cylinder 12; The desulfurization assembly 2 includes a desulfurization box 21, the exhaust pipe 121 is connected to the desulfurization box 21 through a connecting pipe 22, a doser 3 is arranged between the exhaust pipe 121 and the connecting pipe 22, the intensifier includes a connecting ring, the inner wall of the connecting ring is provided with a dosing port 31, and the dosing port 31 is evenly arranged along the circumferential direction of the connecting ring; The connecting pipe 22 is also provided with a mixer 23 for uniformly mixing the gas and the reagent output from the dosing port 31, and the desulfurization box 21 is provided with a stirrer 24 for stirring the gas and the reagent in the desulfurization box 21; The airflow inputted into the inner cylinder 11 by the air inlet pipe 13 flows in a spiral shape, and the impurities in the gas are separated from the gas under the action of centrifugal force; The flow rate of the gas in the inner tube 11 is greater than the flow rate of the gas between the inner tube 11 and the outer tube 12 .

[0036] The air inlet pipe 13 is connected to the gas output pipe of the kiln tail structure, or is directly connected to the kiln tail, and is used to introduce the gas output from the cement kiln into the inner tube 11.

[0037] Specifically, the gas first enters the inner cylinder 11, and then flows in a spiral shape in the inner cylinder 11, and a part of impurities are removed under the action of centrifugal force.

[0038] The gas in the inner tube 11 then enters the area between the inner tube 11 and the outer tube 12, and the flow rate decreases in the area, and then the impurities in the gas are further precipitated, thereby further reducing the impurities in the gas.

[0039] The precipitated gas enters the connecting pipe 22 again, and the doser 3 sprays the agent into the connecting pipe 22. The mixture of the agent and the gas is then mixed by the mixer 23. The mixer 23 is used to make the gas and agent mixture in the connecting pipe 22 form turbulence so that the gas and the agent are evenly mixed.

[0040] Finally, the mixture of gas and reagent enters the desulfurization box 21 for desulfurization, and the agitator 24 in the desulfurization box 21 can mix the gas and reagent more evenly, thereby further optimizing the desulfurization effect of the gas.

[0041] Moreover, in this solution, the desulfurization component 2 and the precipitation component 1 have a compact structure and occupy a small space.

[0042] Reference Figures 1 to 7 As shown, in some embodiments, the inner cylinder 11 is installed in the outer cylinder 12 through a connecting plate 112, and there are multiple connecting plates 112, and all the connecting plates 112 are evenly distributed along the circumferential direction of the inner cylinder 11. The connecting plates 112, the inner cylinder 11, and the outer cylinder 12 can be fixed by welding.

[0043] In order to facilitate assembly, the outer cylinder 12 can adopt a split structure. After assembly, the split cylinders are spliced ​​together by welding.

[0044] In some embodiments, the inner cylinder 11 includes a bottom wall, and the distance between the air inlet pipe 13 and the bottom wall is not less than 1 / 5 of the height of the inner cylinder 11. In addition, a dust shield 113 is provided in the inner cylinder 11 to prevent impurities accumulated on the bottom wall from being blown up by the airflow output by the air inlet pipe 13, and a gap is provided between the dust shield 113 and the inner wall of the inner cylinder 11 to allow impurities to pass through.

[0045] The cross-sectional shape of the bottom wall is an arc shape. The dust shield 113 includes a dust shield plate 114 and a column 115 . The dust shield plate 114 is fixed to the upper end of the column 115 , and the lower end of the column 115 is fixed to the bottom wall. The air inlet pipe 13 is located above the dust shield plate 114 .

[0046] Under the action of gravity, the impurities fall to the lowest point of the bottom wall and accumulate together, which can prevent the impurities from being blown up again by the airflow.

[0047] Reference Figures 1 to 7 As shown, in some embodiments, the outer cylinder 12 is fixed to the desulfurization box 21 by supporting feet 122. The desulfurization box 21 includes a box body 25 and a box cover 26. The supporting feet 122 are fixed to the box cover 26 by screws. There are at least three supporting feet 122, and at least three supporting feet 122 are evenly arranged along the circumferential direction of the outer cylinder 12.

[0048] The legs 122 may be welded to the outer cylinder 12 .

[0049] In some embodiments, the mixer 23 includes a connecting seat 231, which is arranged in the connecting pipe 22. The connecting seat 231 is provided with an exhaust hole 232, and the exhaust hole 232 is located between the connecting seat 231 and the inner wall of the connecting pipe 22. The exhaust holes 232 are evenly arranged along the circumferential direction of the connecting seat 231, and the connecting seat 231 is provided with a guide to guide the gas flow direction.

[0050] The guide includes a conical portion 233 with a tip facing upward and a cylindrical portion 234 disposed below the conical portion 233 . The cylindrical portion 234 is located between the connecting seat 231 and the conical portion 233 . A connecting rib is disposed at the lower end of the cylindrical portion 234 .

[0051] The gas and reagent mixture is first evenly dispersed by the conical portion 233, and then the dispersed gas and reagent mixture enters the cylindrical portion 234. After entering the cylindrical portion 234, part of the gas flows downward through the gap between the connecting ribs, and the other part overflows around the cylindrical portion 234 and moves downward. Finally, the gas located below the cylindrical portion 234 enters the desulfurization box 21 through the exhaust hole 232.

[0052] In some embodiments, the connection seat 231 is provided with a column 235 , the conical portion 233 and the cylindrical portion 234 are both provided on the column 235 , and the conical portion 233 guides the airflow to enter the cylindrical portion 234 .

[0053] Reference Figures 1 to 7 As shown, in some embodiments, the agitator 24 includes a stirring component and a motor 241 for driving the stirring component to rotate, and the rotating shaft of the stirring component coincides with the axis of the connecting pipe 22 .

[0054] The stirring assembly includes a stirring shaft 242 . The stirring shaft 242 and the output shaft of the motor 241 are in an integrated structure. The stirring shaft 242 is provided with stirring blades 243 . The stirring blades 243 are evenly arranged along the circumferential direction of the stirring shaft 242 .

[0055] The motor 241 can be fixed in the desulfurization box 21 by screws.

[0056] In some embodiments, both the inner cylinder 11 and the outer cylinder 12 may be provided with sewage discharge doors for discharging impurities between the outer cylinder 12 and the inner cylinder 11 , as well as impurities in the inner cylinder 11 .

[0057] The impurities between the inner cylinder 11, the outer cylinder 12 and the inner cylinder 11 are all cleaned manually.

[0058] A sealing ring should be provided between the sewage discharge door and the outer cylinder 12, and between the other sewage discharge door and the inner cylinder 11. The sealing ring can be bonded to the sewage discharge door.

[0059] The above describes the subject technical solution and corresponding details of the present invention. It can be understood that the above description is only some implementation plans of the subject technical solution of the present invention, and some details may be omitted during the specific implementation.

[0060] In addition, in some embodiments of the above invention, multiple embodiments may be implemented in combination, and various combinations are not listed one by one due to space limitations. Those skilled in the art can freely combine and implement the above embodiments as needed in specific implementation to obtain a better application experience.

[0061] When implementing the subject technical solution of the present invention, those skilled in the art can obtain other detailed configurations or drawings based on the subject technical solution of the present invention and the drawings. Obviously, these details still fall within the scope covered by the subject technical solution of the present invention without departing from the subject technical solution of the present invention.

Claims

1. A kiln tail equipment for improving desulfurization efficiency, characterized by: The invention comprises a precipitation component (1) and a desulfurization component (2), wherein the gas after precipitation in the precipitation component (1) enters the desulfurization component (2) for desulfurization; the precipitation component (1) comprises an inner cylinder (11) and an outer cylinder (12), wherein the inner cylinder (11) is provided with an air inlet pipe (13), wherein the air inlet pipe (13) is arranged along the tangent direction of the inner cylinder (11), wherein the outer cylinder (12) is covered in the inner cylinder (11), and wherein the top end of the inner cylinder (11) is provided with an opening (111) for communicating the inner cylinder (11) with the outer cylinder (12), and wherein the bottom end of the outer cylinder (12) is provided with an exhaust pipe (121), wherein the upper end of the exhaust pipe (121) extends into the outer cylinder (12), and wherein the upper end of the exhaust pipe (121) protrudes from the inner side wall of the outer cylinder (12); the desulfurization component (2) comprises a desulfurization box (21), wherein the exhaust pipe (121) is connected to the outer cylinder (12). The desulfurization box (21) is communicated with each other through a connecting pipe (22); a doser (3) is arranged between the exhaust pipe (121) and the connecting pipe (22); the doser comprises a connecting ring; the inner wall of the connecting ring is provided with a doser port (31); the doser port (31) is evenly arranged along the circumferential direction of the connecting ring; a mixer (23) is also arranged in the connecting pipe (22) for evenly mixing the gas and the agent output from the doser port (31); a stirrer (24) is arranged in the desulfurization box (21) for stirring the gas and the agent in the desulfurization box (21); wherein the airflow input into the inner cylinder (11) from the air inlet pipe (13) flows in a spiral shape, and impurities in the gas are separated from the gas under the action of centrifugal force; the flow rate of the gas in the inner cylinder (11) is greater than the flow rate of the gas between the inner cylinder (11) and the outer cylinder (12).

2. The kiln tail equipment for improving desulfurization efficiency according to claim 1, characterized in that: The inner cylinder (11) is installed in the outer cylinder (12) via a connecting plate (112), there are a plurality of connecting plates (112), and all the connecting plates (112) are evenly distributed along the circumferential direction of the inner cylinder (11).

3. The kiln tail equipment for improving desulfurization efficiency according to claim 2 is characterized in that: The inner cylinder (11) comprises a bottom wall, the distance between the air inlet pipe (13) and the bottom wall is not less than 1 / 5 of the height of the inner cylinder (11), and a dust blocker (113) is also provided in the inner cylinder (11) to prevent impurities accumulated on the bottom wall from being blown away by the airflow output by the air inlet pipe (13), and a gap is provided between the dust blocker (113) and the inner wall of the inner cylinder (11) to allow impurities to pass through.

4. The kiln tail equipment for improving desulfurization efficiency according to claim 3 is characterized in that: The cross-section of the bottom wall is in the shape of an arc; the dust shield (113) comprises a dust shield plate (114) and a column (115); the dust shield plate (114) is fixed to the upper end of the column (115); the lower end of the column (115) is fixed to the bottom wall; and the air intake pipe (13) is located above the dust shield plate (114).

5. The kiln tail equipment for improving desulfurization efficiency according to claim 4 is characterized in that: The outer cylinder (12) is fixed to the desulfurization box (21) via supporting legs (122); the desulfurization box (21) comprises a box body (25) and a box cover (26); the supporting legs (122) are fixed to the box cover (26) via screws; there are at least three supporting legs (122), and at least three supporting legs (122) are evenly arranged along the circumferential direction of the outer cylinder (12).

6. The kiln tail equipment for improving desulfurization efficiency according to claim 1, characterized in that: The mixer (23) comprises a connection seat (231), the connection seat (231) being arranged in the connection pipe (22), the connection seat (231) being provided with an exhaust hole (232), the exhaust hole (232) being located between the connection seat (231) and the inner wall of the connection pipe (22), the exhaust holes (232) being evenly arranged along the circumferential direction of the connection seat (231), and the connection seat (231) being provided with a guide for guiding the flow direction of gas.

7. The kiln tail equipment for improving desulfurization efficiency according to claim 6, characterized in that: The guide comprises a conical portion (233) with a tip facing upward and a cylindrical portion (234) arranged below the conical portion (233); the cylindrical portion (234) is located between the connecting seat (231) and the conical portion (233); and a connecting rib is arranged at the lower end of the cylindrical portion (234).

8. The kiln tail equipment for improving desulfurization efficiency according to claim 7, characterized in that: The connection seat (231) is provided with a column (235), the conical portion (233) and the cylindrical portion (234) are both provided on the column (235), and the conical portion (233) guides the airflow to enter the cylindrical portion (234).

9. The kiln tail equipment for improving desulfurization efficiency according to claim 1, characterized in that: The stirrer (24) comprises a stirring component and a motor (241) for driving the stirring component to rotate, and the rotation axis of the stirring component coincides with the axis of the connecting pipe (22).

10. The kiln tail equipment for improving desulfurization efficiency according to claim 9, characterized in that: The stirring assembly comprises a stirring shaft (242), the stirring shaft (242) and the output shaft of the motor (241) being an integrated structure, the stirring shaft (242) being provided with stirring blades (243), and the stirring blades (243) being evenly arranged along the circumferential direction of the stirring shaft (242).

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