A kiln tail device for improving desulfurization efficiency

Abstract

The present application relates to cement production equipment accessory technical field, especially to a kind of kiln tail equipment of improving desulfurization efficiency.The present application provides a kind of kiln tail equipment of improving desulfurization efficiency, solve the technical problem of poor impurity removal effect of desulfurization equipment applied in kiln tail in prior art.A kind of kiln tail equipment of improving desulfurization efficiency, including precipitation component and desulfurization component, the gas after precipitation of the precipitation component enters the desulfurization component and is desulfurized;By setting inner cylinder, and make the tangential direction of inner cylinder of gas inlet pipe setting, gas enters the process of inner cylinder and enters inner cylinder along the tangential direction of inner cylinder, so that gas forms spiral airflow in inner cylinder, under the action of centrifugal force, impurities in gas will be thrown out, and, impurities move downward along the bottom wall of inner cylinder under the action of gravity, so that gas contains less impurities, beneficial to subsequent desulfurization of gas.

Description

Technical Field

[0001] This invention relates to the field of cement production equipment accessories technology, and in particular to a kiln tail device for improving desulfurization efficiency. Background Technology

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

[0003] During desulfurization at the kiln tail, the flue gas from the cement processing inlet pipe already carries many large and small particles of dust. Therefore, the impurities in the gas should be minimized before desulfurization to optimize the desulfurization effect. Current technologies typically use precipitation to remove impurities from the gas. While precipitation is effective at removing impurities, its actual removal efficiency is relatively poor in practice.

[0004] Therefore, existing desulfurization equipment used at the kiln tail has the technical problem of poor impurity removal efficiency. Summary of the Invention

[0005] The present invention provides a kiln tail equipment for improving desulfurization efficiency, which solves the technical problem of poor impurity removal effect of existing desulfurization equipment applied to kiln tail.

[0006] Some implementation schemes for solving the above-mentioned technical problems include:

[0007] A kiln tail device for improving desulfurization efficiency includes a sedimentation component and a desulfurization component, wherein the gas precipitated by the sedimentation component enters the desulfurization component for desulfurization.

[0008] The sedimentation assembly includes an inner cylinder and an outer cylinder. The inner cylinder is provided with an air inlet pipe, which is arranged tangentially to the inner cylinder. The outer cylinder is covered inside the inner cylinder. The top of the inner cylinder is provided with an opening that allows the inner cylinder to communicate with the outer cylinder. The bottom of the outer cylinder is provided with an exhaust pipe, the upper end of which extends into the outer cylinder and protrudes from the inner wall of the outer cylinder.

[0009] The desulfurization assembly includes a desulfurization box, and the exhaust pipe is connected to the desulfurization box through a connecting pipe. A dosing device is provided between the exhaust pipe and the connecting pipe. The dosing device includes a connecting ring, and the inner wall of the connecting ring is provided with a dosing port. The dosing ports are evenly distributed along the circumference of the connecting ring.

[0010] The connecting pipe is also equipped with a mixer to uniformly mix the gas with the agent output from the dosing port, and the desulfurization box is equipped with a stirrer to stir the gas and agent in the desulfurization box.

[0011] The airflow entering the inner cylinder through the air inlet pipe flows in a spiral shape, and under the action of centrifugal force, impurities in the gas are separated from the gas.

[0012] The gas flow rate within the inner cylinder is greater than the gas flow rate between the inner cylinder and the outer cylinder.

[0013] Preferably, the inner cylinder is installed inside the outer cylinder via connecting plates, and there are multiple connecting plates, all of which are evenly distributed along the circumference of the inner cylinder.

[0014] Preferably, the inner cylinder includes a bottom wall, the distance between the air inlet pipe and the bottom wall is not less than 1 / 5 of the height of the inner cylinder, and a dust baffle is provided inside the inner cylinder to prevent impurities accumulated on the bottom wall from being blown away by the airflow output from the air inlet pipe, and a gap is provided between the dust baffle and the inner side wall of the inner cylinder to allow impurities to pass through.

[0015] Preferably, the bottom wall has a circular arc shape in cross-section, the dust filter includes a dust baffle plate and a column, the dust baffle 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 baffle plate.

[0016] Preferably, the outer cylinder is fixed to the desulfurization box by means of support legs. The desulfurization box includes a box body and a box cover. The support legs are fixed to the box cover by screws. There are at least three support legs, and the at least three support legs are evenly arranged along the circumference of the outer cylinder.

[0017] Preferably, the mixer includes a connector disposed inside the connecting pipe, the connector having an exhaust port located between the connector and the inner wall of the connecting pipe, the exhaust ports being evenly distributed along the circumference of the connector, and the connector having a guide for guiding the gas flow.

[0018] Preferably, the guide includes a tapered portion with its tip pointing upwards and a cylindrical portion disposed below the tapered portion, the cylindrical portion being located between the connecting seat and the tapered portion, and a connecting rib being provided at the lower end of the cylindrical portion.

[0019] Preferably, the connecting seat is provided with a column, and both the conical part and the cylindrical part are provided on the column, with the conical part guiding the airflow into the cylindrical part.

[0020] Preferably, the stirrer includes a stirring assembly and a motor for driving the stirring assembly to rotate, wherein the rotation axis of the stirring assembly coincides with the axis of the connecting pipe.

[0021] Preferably, the stirring assembly includes a stirring shaft, which is integral with the output shaft of the motor. The stirring shaft is provided with stirring blades, which are evenly arranged along the circumference of the stirring shaft.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. By setting an inner cylinder and aligning the air inlet pipe tangentially with the inner cylinder, the gas enters the inner cylinder tangentially, creating a spiral airflow within the inner cylinder. Under centrifugal force, impurities in the gas are ejected, and the impurities move downwards along the bottom wall of the inner cylinder under gravity, resulting in less impurities in the gas, which is beneficial for subsequent desulfurization.

[0024] 2. By setting an outer cylinder outside the inner cylinder, when gas enters the area between the inner and outer cylinders from the inner cylinder, impurities will precipitate in the area between the outer and inner cylinders, thereby further reducing impurities in the gas.

[0025] 3. The outer cylinder is fitted outside the inner cylinder, which makes the sedimentation assembly compact and small in size, reducing the space occupied by the sedimentation assembly.

[0026] 4. The gas is precipitated by the precipitation component before entering the desulfurization component for desulfurization, which reduces impurities in the gas and improves the desulfurization quality and efficiency.

[0027] 5. By setting up a stirrer, which is used to stir the gas and the reagent, the gas and reagent are mixed more evenly, further optimizing the desulfurization effect of the gas. Attached Figure Description

[0028] For illustrative purposes, several embodiments of the invention are illustrated in the following figures. These figures are incorporated herein by reference and form part of the detailed description. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring the concept of the subject matter of the invention.

[0029] Figure 1 This is a schematic diagram of the internal structure of the present invention.

[0030] Figure 2 This is a schematic diagram of the present invention.

[0031] Figure 3 This is a schematic diagram of the inner cylinder.

[0032] Figure 4 This is a schematic diagram of a stirrer.

[0033] Figure 5 This is a schematic diagram of a dosing device.

[0034] Figure 6 This is a schematic diagram of the mixer at its first angle.

[0035] Figure 7 This is a schematic diagram of the mixer at the second angle.

[0036] In the picture:

[0037] 1. Sedimentation assembly; 11. Inner cylinder; 111. Opening; 112. Connecting plate; 113. Dust baffle; 114. Dust baffle plate; 115. Column; 12. Outer cylinder; 121. Exhaust pipe; 122. Support leg; 13. Inlet pipe.

[0038] 2. Desulfurization components; 21. Desulfurization box; 22. Connecting pipe; 23. Mixer; 231. Connecting seat; 232. Exhaust port; 233. Conical part; 234. Cylindrical part; 235. Column; 24. Agitator; 241. Motor; 242. Agitator shaft; 243. Agitator blade; 25. Box body; 26. Box cover.

[0039] 3. Dosing device; 31. Dosing port. Detailed Implementation

[0040] The specific embodiments shown below are intended to describe various configurations of the subject matter of the invention and are not intended to represent the only configuration in which the subject matter of the invention can be practiced. The specific embodiments include particular details intended to provide a thorough understanding of the subject matter of the invention. However, it will be clear and apparent to those skilled in the art that the subject matter of the invention is not limited to the specific details shown herein and can be practiced without these specific details.

[0041] Understandably, in this document, relational terms such as “first” and “second” are intended to distinguish one entity or operation from another, and are not intended to expressly or imply any actual relationship or order between these entities or operations.

[0042] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Reference Figures 1 to 7 As shown, a kiln tail device for improving desulfurization efficiency includes a sedimentation component 1 and a desulfurization component 2, wherein the gas precipitated in the sedimentation component 1 enters the desulfurization component 2 for desulfurization.

[0044] The sedimentation assembly 1 includes an inner cylinder 11 and an outer cylinder 12. The inner cylinder 11 is provided with an air inlet pipe 13, which is arranged tangentially to the inner cylinder 11. The outer cylinder 12 is covered inside the inner cylinder 11. The top of the inner cylinder 11 is provided with an opening 111 that allows the inner cylinder 11 to communicate with the outer cylinder 12. The bottom of the outer cylinder 12 is provided with an exhaust pipe 121, the upper end of which extends into the outer cylinder 12 and protrudes from the inner wall of the outer cylinder 12.

[0045] 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 dosing device 3 is provided between the exhaust pipe 121 and the connecting pipe 22. The dosing device includes a connecting ring. The inner wall of the connecting ring is provided with a dosing port 31. The dosing port 31 is evenly arranged along the circumference of the connecting ring.

[0046] The connecting pipe 22 is also equipped with a mixer 23 to uniformly mix the gas with the agent output from the dosing port 31, and the desulfurization box 21 is equipped with a stirrer 24 to stir the gas and agent in the desulfurization box 21.

[0047] The airflow entering the inner cylinder 11 through the air inlet pipe 13 flows in a spiral shape, and under the action of centrifugal force, impurities in the gas are separated from the gas.

[0048] The gas velocity within the inner cylinder 11 is greater than the gas velocity between the inner cylinder 11 and the outer cylinder 12.

[0049] The air inlet pipe 13 is connected to the gas outlet pipe of the kiln tail structure, or directly to the kiln tail, for introducing the gas output from the cement kiln into the inner cylinder 11.

[0050] Specifically, the gas first enters the inner cylinder 11, and then flows in a spiral shape within the inner cylinder 11, removing some impurities under the action of centrifugal force.

[0051] The gas inside the inner cylinder 11 re-enters the area between the inner cylinder 11 and the outer cylinder 12, where the flow rate decreases, causing impurities in the gas to be further precipitated, thereby further reducing the amount of impurities in the gas.

[0052] The precipitated gas then enters the connecting pipe 22, and the dosing device 3 sprays the agent into the connecting pipe 22. The mixture of agent and gas is then mixed by the mixer 23, which is used to create turbulence in the gas and agent mixture in the connecting pipe 22, so that the gas and agent are mixed evenly.

[0053] Finally, the mixture of gas and reagent enters the desulfurization tank 21 for desulfurization. Furthermore, the agitator 24 inside the desulfurization tank 21 can mix the gas and reagent more evenly, thereby further optimizing the desulfurization effect of the gas.

[0054] Furthermore, the desulfurization component 2 and the sedimentation component 1 in this scheme have a compact structure and occupy little space.

[0055] Reference Figures 1 to 7 As shown, in some embodiments, the inner cylinder 11 is installed inside the outer cylinder 12 via connecting plates 112. There are multiple connecting plates 112, and all connecting plates 112 are evenly distributed along the circumference of the inner cylinder 11. The connecting plates 112 can be fixed to the inner cylinder 11 and the outer cylinder 12 by welding.

[0056] To facilitate assembly, the outer cylinder 12 can adopt a split structure. After assembly, the split cylinders can be joined together by welding.

[0057] In some embodiments, the inner cylinder 11 includes 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 baffle 113 is also provided inside the inner cylinder 11 to prevent impurities accumulated on the bottom wall from being blown away by the airflow output from the air inlet pipe 13, and a gap is provided between the dust baffle 113 and the inner side wall of the inner cylinder 11 to allow impurities to pass through.

[0058] The bottom wall has a circular arc cross-section. The dust baffle 113 includes a dust baffle plate 114 and a column 115. The dust baffle 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 baffle plate 114.

[0059] Impurities fall to the lowest point of the bottom wall under the influence of gravity and accumulate together, which can prevent the impurities from being blown up again by the airflow.

[0060] Reference Figures 1 to 7 As shown, in some embodiments, the outer cylinder 12 is fixed to the desulfurization box 21 by support legs 122. The desulfurization box 21 includes a box body 25 and a box cover 26. The support legs 122 are fixed to the box cover 26 by screws. There are at least three support legs 122, and the at least three support legs 122 are evenly arranged along the circumference of the outer cylinder 12.

[0061] The support leg 122 can be welded to the outer cylinder 12.

[0062] In some embodiments, the mixer 23 includes a connector 231 disposed within the connecting pipe 22. The connector 231 is provided with an exhaust port 232 located between the connector 231 and the inner wall of the connecting pipe 22. The exhaust port 232 is uniformly arranged along the circumferential direction of the connector 231. The connector 231 is provided with a guide to direct the flow of gas.

[0063] The guide includes a tapered portion 233 with its tip pointing upwards and a cylindrical portion 234 disposed below the tapered portion 233. The cylindrical portion 234 is located between the connecting seat 231 and the tapered portion 233, and a connecting rib is provided at the lower end of the cylindrical portion 234.

[0064] The gas and reagent mixture is first evenly dispersed by the conical part 233. Then, the dispersed gas and reagent mixture enters the cylindrical part 234. After entering the cylindrical part 234, part of the gas flow flows downward through the gap between the connecting ribs, and another part overflows around the cylindrical part 234 and moves downward. Finally, the gas located below the cylindrical part 234 enters the desulfurization box 21 through the exhaust port 232.

[0065] In some embodiments, the connecting seat 231 is provided with a column 235, and the conical portion 233 and the cylindrical portion 234 are both provided on the column 235, with the conical portion 233 guiding airflow into the cylindrical portion 234.

[0066] Reference Figures 1 to 7 As shown, in some embodiments, the stirrer 24 includes a stirring assembly and a motor 241 for driving the stirring assembly to rotate, and the rotation axis of the stirring assembly coincides with the axis of the connecting pipe 22.

[0067] The stirring assembly includes a stirring shaft 242, which is integrated with the output shaft of the motor 241. The stirring shaft 242 is provided with stirring blades 243, which are evenly arranged along the circumference of the stirring shaft 242.

[0068] The motor 241 can be fixed inside the desulfurization box 21 with screws.

[0069] In some embodiments, both the inner cylinder 11 and the outer cylinder 12 may be provided with drain doors to discharge impurities between the outer cylinder 12 and the inner cylinder 11, as well as impurities inside the inner cylinder 11.

[0070] Impurities between the inner cylinder 11, the outer cylinder 12, and the inner cylinder 11 are all cleaned manually.

[0071] A sealing ring should be installed between the drain door and the outer cylinder 12, and between the other drain door and the inner cylinder 11. The sealing ring can be glued to the drain door.

[0072] The technical solution of the present invention and its corresponding details have been described above. It is understood that the above description is only some implementation schemes of the technical solution of the present invention, and some details may be omitted in the specific implementation.

[0073] Furthermore, in some embodiments of the above invention, multiple embodiments may be combined; however, due to space limitations, all such combinations will not be listed here. Those skilled in the art can freely combine and implement the above embodiments according to their needs to obtain a better application experience.

[0074] When implementing the subject matter of this invention, those skilled in the art can obtain other detailed configurations or drawings based on the subject matter and drawings. Obviously, these details are still within the scope of the subject matter of this invention without departing from it.

Claims

1. A kiln tail apparatus for improving desulphurization efficiency, characterized by: The application relates to a desulfurization device, which comprises a precipitation assembly (1) and a desulfurization assembly (2), the desulfurization assembly (2) is entered by the precipitated gas of the precipitation assembly (1), the precipitation assembly (1) comprises 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 arranged in the inner cylinder (11), the top end of the inner cylinder (11) is provided with an opening (111) for connecting the inner cylinder (11) and the outer cylinder (12), the bottom of the outer cylinder (12) is provided with an air outlet pipe (121), the upper end of the air outlet pipe (121) extends into the outer cylinder (12), and the upper end of the air outlet pipe (121) protrudes from the inner side wall of the outer cylinder (12); the desulfurization assembly (2) comprises a desulfurization tank (21), the air outlet pipe (121) is communicated with the desulfurization tank (21) through a connecting pipe (22), a dosing device (3) is arranged between the air outlet pipe (121) and the connecting pipe (22), the dosing device (3) comprises a connecting ring, the inner wall of the connecting ring is provided with a dosing port (31), and the dosing port (31) is uniformly arranged along the circumferential direction of the connecting ring; a mixer (23) for uniformly mixing the gas and the medicament output by the dosing port (31) is further arranged in the connecting pipe (22), and a stirrer (24) for stirring the gas and the medicament in the desulfurization tank (21) is arranged in the desulfurization tank (21); wherein the gas flow input into the inner cylinder (11) through the air inlet pipe (13) flows spirally, and the impurities in the gas are separated from the gas under the action of centrifugal force; the flow speed of the gas in the inner cylinder (11) is greater than the flow speed of the gas between the inner cylinder (11) and the outer cylinder (12); the mixer (23) comprises a connecting seat (231), the connecting seat (231) is arranged in the connecting pipe (22), the connecting seat (231) is provided with an air outlet hole (232), the air outlet hole (232) is located between the connecting seat (231) and the inner wall of the connecting pipe (22), the air outlet hole (232) is uniformly arranged along the circumferential direction of the connecting seat (231), and the connecting seat (231) is provided with a guide device for guiding the gas flow; the guide device comprises a tapered portion (233) with a pointed end upward and a cylindrical portion (234) arranged below the tapered portion (233), the cylindrical portion (234) is located between the connecting seat (231) and the tapered portion (233), and the lower end of the cylindrical portion (234) is provided with a connecting rib; the connecting seat (231) is provided with a column body (235), the tapered portion (233) and the cylindrical portion (234) are arranged in the column body (235), and the tapered portion (233) guides the gas flow into the cylindrical portion (234).

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) through connecting plates (112), the connecting plates (112) are multiple, and all the connecting plates (112) are uniformly distributed along the circumferential direction of the inner cylinder (11).

3. The kiln tail equipment for improving desulfurization efficiency according to claim 2, 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 the inner cylinder (11) is further provided with a dust baffle (113) for preventing impurities accumulated on the bottom wall from being blown up by the airflow output by the air inlet pipe (13), and a gap for allowing impurities to pass through is arranged between the dust baffle (113) and the inner side wall of the inner cylinder (11).

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

5. The kiln tail equipment for improving desulfurization efficiency according to claim 4, characterized in that: The outer cylinder (12) is fixed to the desulfurization tank (21) through a support leg (122), the desulfurization tank (21) comprises a tank body (25) and a tank cover (26), the support leg (122) is fixed to the tank cover (26) through a screw, and the support leg (122) is at least three, and at least three support legs (122) are uniformly 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 agitator (24) comprises an agitating assembly and a motor (241) for driving the agitating assembly to rotate, and the rotation axis of the agitating assembly coincides with the axis of the connecting pipe (22).

7. The kiln tail equipment for improving desulfurization efficiency according to claim 6, characterized in that: The agitating assembly comprises an agitating shaft (242), the agitating shaft (242) and the output shaft of the motor (241) are in an integral structure, the agitating shaft (242) is provided with agitating blades (243), and the agitating blades (243) are uniformly arranged along the circumferential direction of the agitating shaft (242).

Images