A sound wave soot blower device for a cement kiln SCR denitration system

Abstract

The present disclosure provides a kind of cement kiln SCR denitration system with acoustic wave soot blower device, cement kiln SCR denitration system with acoustic wave soot blower device can include: acoustic wave generator and first function structure, acoustic wave generator has acoustic wave output port, acoustic wave generator is configured to at least output first acoustic wave and second acoustic wave by acoustic wave output port, first acoustic wave propagates along first propagation path, second acoustic wave propagates along second propagation path different from first propagation path;First function structure is provided with at least one first function area, first function area is arranged on second propagation path, for interacting with second acoustic wave, to at least generate third acoustic wave of propagation direction change and intensity less than second acoustic wave, third acoustic wave propagates along third propagation path, and first propagation path and third propagation path all pass through first target surface, so that first acoustic wave and third acoustic wave can all act on first target surface, first target surface is the surface where the area to be cleaned or cleaned of slag is located.

Description

Technical Field

[0001] This disclosure relates to the field of acoustic soot blowing technology, and in particular to an acoustic soot blowing device for a cement kiln SCR denitrification system. Background Technology

[0002] During the operation of cement kilns, the accumulation of deposits such as dust and slag can seriously affect the working efficiency and service life of cement kilns. However, sonic soot blowing technology uses the vibration properties of sound waves to loosen and remove the deposits, so that cement kilns can be kept in a stable working state and their service life can be extended.

[0003] In related technologies, while lower sound wave intensity can reduce noise pollution, it may not be able to completely remove deposits with high adhesion or large particle size. Conversely, while increasing sound wave intensity can significantly improve the removal of deposits, it also leads to a significant increase in noise pollution. Thus, current designs cannot achieve both thorough removal and noise pollution. Summary of the Invention

[0004] This disclosure provides an acoustic soot blowing device for a cement kiln SCR denitrification system, which balances thorough cleaning with noise pollution control.

[0005] To address the aforementioned technical problems, this disclosure provides an acoustic soot blowing device for a cement kiln SCR denitrification system. The acoustic soot blowing device for a cement kiln SCR denitrification system may include: an acoustic generator and a first functional structure. The acoustic generator has an acoustic output port and is configured to output at least a first acoustic wave and a second acoustic wave through the acoustic output port. The first acoustic wave propagates along a first propagation path, and the second acoustic wave propagates along a second propagation path different from the first propagation path. The first functional structure has at least one first functional area disposed on the second propagation path for interacting with the second acoustic wave to generate at least a third acoustic wave with a changed propagation direction and an intensity less than the second acoustic wave. The third acoustic wave propagates along a third propagation path, and both the first and third propagation paths pass through a first target surface, so that both the first and third acoustic waves can act on the first target surface, where the first target surface is the surface of the area to be cleaned or slag removed.

[0006] In some embodiments, the sound wave generator is further configured to output a fourth sound wave and a fifth sound wave through the sound wave output port, the fourth sound wave propagating along a fourth propagation path and the fifth sound wave propagating along a fifth propagation path different from the fourth propagation path; the first functional structure further has at least one second functional region disposed on the fifth propagation path for interacting with the fifth sound wave to generate at least a sixth sound wave with a changed propagation direction and an intensity less than the fifth sound wave, the sixth sound wave propagating along a sixth propagation path, and both the fourth and sixth propagation paths passing through a second target surface, so that the fourth and sixth sound waves can act on the second target surface, the second target surface being the surface where the area to be cleaned or slag removed is located, and disposed opposite to the first target surface.

[0007] In some embodiments, the sound wave transmission channel of the sound wave generator is a horn-shaped structure, with a sound wave input port and a sound wave output port at its two ends, respectively. The diameter of the sound wave output port is larger than the diameter of the sound wave input port, so that the multiple sound waves output from the sound wave output port, including the first sound wave, the second sound wave, the fourth sound wave, and the fifth sound wave, propagate in a divergent manner. The first functional structure includes multiple first functional regions and multiple second functional regions, which are arranged opposite to each other and distributed in a ring around the axis of the sound wave transmission channel.

[0008] In some embodiments, there is seamless connection between two adjacent first functional areas, between adjacent first functional areas and second functional areas, and between two adjacent second functional areas.

[0009] In some embodiments, the first functional area is planar or curved and recessed in a direction away from the first target surface; the second functional area is planar or curved and recessed in a direction away from the second target surface.

[0010] In some embodiments, the acoustic soot blowing device for the SCR denitrification system of the cement kiln may further include: a connecting structure, one end of which is connected to a first surface on the outside of the acoustic generator, and the other end of which is connected to a second surface of the first functional structure facing away from the first functional area and a third surface facing away from the second functional area.

[0011] In some embodiments, the orthographic projection area of ​​the connection structure onto the first target surface is a first region, and the orthographic projection area onto the second target surface is a second region; the acoustic soot blowing device for the cement kiln SCR denitrification system further includes: a second functional structure, the second functional structure being disposed on an inner wall of the acoustic transmission channel near the acoustic output port, the inner surface of the second functional structure having a recessed third functional region, the third functional region being used to reflect and / or diffuse acoustic waves propagating toward the first region and the second region into the acoustic transmission channel.

[0012] In some embodiments, the cross-sectional shape and size of the second functional structure remain consistent at different locations.

[0013] In some embodiments, the connection structure is movably connected to the first surface, such that the connection structure is capable of displacement in a direction parallel to and / or perpendicular to the axis of the acoustic wave transmission channel.

[0014] In some embodiments, the sound wave output port is configured to output the first sound wave, the second sound wave, the fourth sound wave, and the fifth sound wave sequentially or simultaneously.

[0015] Through the above technical solution, the acoustic soot blowing device for SCR denitrification system of cement kiln provided in this disclosure includes an acoustic generator and a first functional structure. The acoustic generator can output multiple acoustic waves, some of which (such as the first acoustic wave) can directly propagate to the first target surface and act on the dust or slag deposits attached to the first target surface, thereby causing the dust or slag deposits to fall off from the first target surface; some acoustic waves (such as the second acoustic wave) cannot directly reach the first target surface, but the first functional structure can change the propagation direction of this part of the acoustic waves (such as the second acoustic wave) and weaken its intensity through reflection or guidance, thereby generating a third acoustic wave that can act on the first target surface and perform soot blowing. This design significantly improves the utilization efficiency of sound waves and increases the number and intensity of effective sound waves acting on the first target surface. Therefore, while ensuring the ash removal effect, the overall output intensity of the sound wave generator can be appropriately reduced, thereby effectively reducing the noise pollution generated during the operation of the sonic soot blowing device in the SCR denitrification system of cement kilns, and avoiding noise interference / pollution caused by the propagation of second sound waves and other sound waves to areas other than the first target surface.

[0016] The above description is only an overview of the technical solution disclosed herein. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, the preferred embodiments of this disclosure are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 Schematic diagram of the structure of the acoustic soot blowing device for the SCR denitrification system of cement kilns provided in this disclosure. Figure 1 ;

[0019] Figure 2 Schematic diagram of the structure of the acoustic soot blowing device for the SCR denitrification system of cement kilns provided in this disclosure. Figure 2 ;

[0020] Figure 3 For this public disclosure Figure 2 Enlarged structural schematic diagram of area A of the acoustic soot blowing device used in the SCR denitrification system of a cement kiln in China;

[0021] Figure 4 This is a schematic diagram of the acoustic soot blowing device for the SCR denitrification system of a cement kiln, as provided in this disclosure, assembled inside the kiln.

[0022] Figure 5 This is a partial structural diagram of the acoustic soot blowing device for the SCR denitrification system of a cement kiln, as provided in this disclosure, assembled inside the kiln.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100. Acoustic soot blowing device for SCR denitrification system of cement kiln; 10. Acoustic generator; 11. Acoustic output port; 111. First acoustic wave; 112. Second acoustic wave; 113. Third acoustic wave; 12. Acoustic transmission channel; 13. Acoustic input port; 20. First functional structure; 21. First functional area; 22. Second functional area; 30. Connection structure; 40. Second functional structure; 41. Third functional area;

[0025] 200, Kiln; 201, First target surface; 2011, First region; 202, Catalyst layer; 203, Second target surface; 2031, Second region. Detailed Implementation

[0026] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0027] These embodiments are provided to make the disclosure thorough and complete, and to fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0028] It should be noted that, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] Furthermore, the terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.

[0030] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific circumstances. When a particular device is described as being located between a first device and a second device, an intermediary device may or may not be present between the particular device and the first or second device.

[0031] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0032] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0033] During the operation of cement kilns, the accumulation of deposits such as dust and slag can seriously affect the working efficiency and service life of cement kilns. However, sonic soot blowing technology uses the vibration properties of sound waves to loosen and remove the deposits, so that cement kilns can be kept in a stable working state and their service life can be extended.

[0034] In related technologies, while lower sound wave intensity can reduce noise pollution, it may not be able to completely remove deposits with high adhesion or large particle size. Conversely, while increasing sound wave intensity can significantly improve the removal of deposits, it also leads to a significant increase in noise pollution. Thus, current designs cannot achieve both thorough removal and noise pollution.

[0035] The inventors of this disclosure have discovered that an acoustic soot blowing device for a cement kiln SCR denitrification system can be configured. This device includes a sound wave generator and a first functional structure. The sound wave generator outputs multiple sound waves, some of which (such as the first sound wave) can directly propagate to a first target surface, acting on dust or slag deposits adhering to its surface, thereby causing the deposits to detach. Other sound waves (such as the second sound wave) cannot directly reach the first target surface, and the first functional structure can reflect or guide the second sound wave, allowing it to propagate to the first target surface and participate in the soot blowing operation. This design effectively reduces the ineffective propagation of sound wave energy and increases the number and intensity of sound waves acting on the first target surface. Therefore, while ensuring the soot blowing effect (thorough removal of deposits), the overall intensity of the sound waves output by the sound wave generator can be appropriately reduced, thereby reducing noise pollution generated during the operation of the acoustic soot blowing device for the cement kiln SCR denitrification system and reducing noise interference / pollution caused by the second sound wave propagating to non-target surfaces.

[0036] This disclosure provides an acoustic soot blowing device 100 for a cement kiln SCR denitrification system. (See also...) Figures 1 to 5 The acoustic soot blowing device 100 for the SCR denitrification system of cement kiln may include: an acoustic generator 10 and a first functional structure 20;

[0037] The sound wave generator 10 has a sound wave output port 11. The sound wave generator 10 is configured to output at least a first sound wave 111 and a second sound wave 112 through the sound wave output port 11. The first sound wave 111 propagates along a first propagation path, and the second sound wave 112 propagates along a second propagation path different from the first propagation path.

[0038] The first functional structure 20 is provided with at least one first functional region 21. The first functional region 21 is disposed on the second propagation path and is used to interact with the second sound wave 112 to generate at least a third sound wave 113 with a changed propagation direction and an intensity less than that of the second sound wave 112. The third sound wave 113 propagates along the third propagation path, and both the first propagation path and the third propagation path pass through the first target surface 201 so that both the first sound wave 111 and the third sound wave 113 can act on the first target surface 201. The first target surface 201 is the surface where the area to be cleaned or slag is located.

[0039] The sonic soot blowing device 100 for cement kiln SCR denitrification system is used inside or outside equipment such as boilers and kilns 200 that require cleaning of dust, slag and other deposits, in order to clean the dust, slag and other deposits inside or outside the equipment.

[0040] The sound wave generator 10 is capable of generating sound waves (such as a first sound wave 111, a second sound wave 112, a fourth sound wave, a fifth sound wave, etc.). Sound waves can be generated by compressing and rapidly releasing compressed air, by using an electromagnet or motor to drive a diaphragm or oscillator to vibrate, or by other methods. The sound wave generator 10 has one or more sound wave output ports 11 for outputting the generated sound waves, allowing the sound waves generated by the generator 10 to be transmitted through a single output or multiple outputs. The first sound wave 111 propagates along a first propagation path, and the second sound wave 112 propagates along a second propagation path. Since their propagation paths are different, they can propagate to different locations. According to the embodiments of this disclosure, when the first sound wave 111 propagates along the first propagation path, it can directly propagate to the first target surface 201; when the second sound wave 112 propagates along the second propagation path, it cannot directly propagate to the first target surface 201.

[0041] The first functional structure 20 has at least one first functional region 21 located on the second propagation path. This first functional region 21 has a reflective function, enabling it to change the propagation direction and weaken the intensity of the second sound wave 112, thereby generating a third sound wave 113. The third sound wave 113 can propagate directly to the first target surface 201 along a new propagation path (such as the third propagation path) and act on the first target surface 201 to participate in the dust removal operation. Here, the intensity of the third sound wave 113 is less than the intensity of the second sound wave 112 after the second sound wave 112 generates it due to energy loss during the interaction between the second sound wave 112 and the first functional region 21.

[0042] Nitrogen oxides are pollutants that have negative impacts on the environment and human health, such as causing acid rain, photochemical smog, and respiratory diseases. See [example image]. Figure 4 and Figure 5 The kiln 200 contains four catalyst layers 202 arranged from top to bottom (such as selective catalytic reduction, which can be abbreviated as SCR). As nitrogen oxides flow sequentially through each catalyst layer 202 from top to bottom, they react with reducing agents such as ammonia and urea in the catalyst layer 202, converting the nitrogen oxides into harmless nitrogen gas and water vapor, which are ultimately discharged through the outlet at the lower end of the kiln 200 to mitigate the impact on the environment and human health. Since nitrogen oxides are commonly found in high-temperature heating equipment used in manufacturing industries such as ceramics, glass, and cement, a large amount of flue gas is released during manufacturing processes. This flue gas contains nitrogen oxides. During the flow of the flue gas within the kiln 200, the nitrogen oxides undergo a catalytic reduction reaction with the catalyst layer 202. However, particulate matter in the flue gas adheres to the surface of the catalyst layer 202, and uneven flow velocity distribution and poor mixing during flue gas flow lead to dust accumulation on the surface of the catalyst layer 202. These particulate matter and dust deposits on the catalyst layer 202 affect its catalytic reduction efficiency. Therefore, a cement kiln SCR denitrification system is installed at the left end above each catalyst layer 202. The acoustic soot blowing device 100 for each cement kiln SCR denitrification system may include: an acoustic generator 10 and a first functional structure 20. The acoustic generator 10 has an acoustic output port 11 and is configured to output a first acoustic wave 111 and a second acoustic wave 112 through the acoustic output port 11. The first acoustic wave 111 propagates along a first propagation path, and the second acoustic wave 112 propagates along a second propagation path different from the first propagation path. The first functional structure 20 has at least one first functional region 21, which is disposed on the second propagation path and is used to interact with the second acoustic wave 112 to generate at least a third acoustic wave 113 with a changed propagation direction and an intensity less than that of the second acoustic wave 112. The third acoustic wave 113 propagates along a third propagation path, and both the first and third propagation paths pass through a first target surface 201 so that the first acoustic wave 111 and the third acoustic wave 113 can act together on the first target surface 201, which is the surface where the area to be cleaned / slag is located. The sediment on the first target surface 201 is treated by the sonic soot blowing device 100 in the SCR denitrification system of the cement kiln, so that each catalyst layer 202 can stably exert its catalytic effect.

[0043] In this embodiment, the acoustic soot blowing device 100 for the SCR denitrification system of cement kilns includes an acoustic generator 10 and a first functional structure 20. The acoustic generator 10 can output multiple acoustic waves, some of which (such as the first acoustic wave 111) can directly propagate to the first target surface 201 and act on the dust or slag deposits attached to the first target surface 201, thereby causing the dust or slag deposits to fall off from the first target surface 201. Some acoustic waves (such as the second acoustic wave 112) cannot directly reach the first target surface 201. However, the first functional structure 20 can change the propagation direction of this part of the acoustic wave (such as the second acoustic wave 112) and weaken its intensity through reflection or guidance, thereby generating a third acoustic wave 113 that can act on the first target surface 201 and perform soot blowing. This design significantly improves the utilization efficiency of sound waves and increases the number and intensity of effective sound waves acting on the first target surface 201. Therefore, while ensuring the ash removal effect, the overall output intensity of the sound wave generator 10 can be appropriately reduced, thereby effectively reducing the noise pollution generated during the operation of the sound wave soot blowing device 100 for cement kiln SCR denitrification system, and avoiding noise interference / pollution caused by the propagation of sound waves such as the second sound wave 112 to areas other than the first target surface 201.

[0044] In some embodiments, see Figure 4 and Figure 5 The sound wave generator 10 is also configured to output a fourth sound wave and a fifth sound wave through the sound wave output port 11. The fourth sound wave propagates along a fourth propagation path, and the fifth sound wave propagates along a fifth propagation path different from the fourth propagation path. The first functional structure 20 also has at least one second functional region 22, which is disposed on the fifth propagation path and is used to interact with the fifth sound wave to generate at least a sixth sound wave with a changed propagation direction and an intensity less than the fifth sound wave. The sixth sound wave propagates along the sixth propagation path, and both the fourth and sixth propagation paths pass through the second target surface 203 so that the fourth and sixth sound waves can act on the second target surface 203. The second target surface 203 is the surface where the area to be cleaned or slag is located and is disposed opposite to the first target surface 201.

[0045] In other words, the acoustic soot blowing device 100 for the SCR denitrification system of a cement kiln can be set between the first target surface 201 and the second target surface 203. The acoustic generator 10 can emit a first part of acoustic waves, a second part of acoustic waves, a third part of acoustic waves, and a fourth part of acoustic waves. The first part of acoustic waves (such as the first acoustic wave 111) can directly propagate to the first target surface 201 and act on the dust, slag, and other deposits on the first target surface 201; the second part of acoustic waves (such as the second acoustic wave 112) cannot directly propagate to the first target surface 201, however, the first functional structure 20's first... Functional region 21 can guide the second part of the sound waves to the first target surface 201 and act on the dust, slag and other deposits on the first target surface 201; the third part of the sound waves (such as the fourth sound wave) can directly propagate to the second target surface 203 and act on the dust, slag and other deposits on the second target surface 203; the fourth part of the sound waves (such as the fifth sound wave) cannot directly propagate to the second target surface 203, however, the second functional region 22 of the first functional structure 20 can guide the fourth part of the sound waves to the second target surface 203 and act on the dust, slag and other deposits on the second target surface 203.

[0046] Among the first sound wave 111, the second sound wave 112, the fourth sound wave and the fifth sound wave, the intensity of any two sound waves can be the same or different. In this way, it can be set according to the thickness and area of ​​the deposits on the first target surface 201 and the second target surface 203. For example, if the thickness of the deposits on the first target surface 201 is greater than the thickness of the deposits on the second target surface 203, then the intensity of the first sound wave 111 and the second sound wave 112 can be greater than the intensity of the fourth sound wave and the fifth sound wave, making the cleaning intensity of the sound wave propagating towards the first target surface 201 greater than the cleaning intensity of the sound wave propagating towards the second target surface 203. Here, the first sound wave 111 and the second sound wave 112 can be generated by the first sound source point of the sound wave generator 10, and the fourth sound wave and the fifth sound wave can be generated by the second sound source point of the sound wave generator 10, with the intensity of the sound wave generated by the first sound source point being greater than the intensity of the sound wave generated by the second sound source point; or, the first sound wave 111, the second sound wave 112, the fourth sound wave, and the fifth sound wave are all generated by the same sound source point of the sound wave generator 10 but at different times, and the intensity of the sound waves generated by the sound source point at different times is different, which can make the intensity of the first sound wave 111 and the second sound wave 112 greater than the intensity of the fourth sound wave and the fifth sound wave.

[0047] The reflectivity of the first functional area 21 and the second functional area 22 can be the same or different, thus allowing for adjustments based on the thickness and area of ​​the sediment on the first target surface 201 and the second target surface 203. For example, if the sediment thickness on the first target surface 201 is greater than that on the second target surface 203, then the reflectivity of the first functional area 21 will be greater than that of the second functional area 22, resulting in a greater cleaning intensity of the sound waves propagating towards the first target surface 201 than towards the second target surface 203.

[0048] In this embodiment, the second sound wave 112 is guided to the first target surface 201 and acts on the dust, slag, and other deposits on the first target surface 201 through the first functional area 21 of the first functional structure 20, and the fifth sound wave is guided to the second target surface 203 and acts on the dust, slag, and other deposits on the second target surface 203 through the second functional area 22 of the first functional structure 20. This fully utilizes the sound waves emitted by the sound wave generator 10, which not only increases the number and intensity of sound waves used for cleaning the first and second target surfaces 201 and 203, but also reduces noise interference / pollution caused by sound waves propagating to non-target areas. Furthermore, the first functional area 21 and the second functional area 22 can be designed differently in terms of shape, size, and quantity according to the different sizes and thicknesses of the deposits that need to be cleaned on the first and second target surfaces 201 and 203.

[0049] In some embodiments, see Figures 1 to 4 The sound wave transmission channel 12 of the sound wave generator 10 has a horn-shaped structure, with a sound wave input port 13 and a sound wave output port 11 at its two ends. The diameter of the sound wave output port 11 is larger than the diameter of the sound wave input port 13, so that the multiple sound waves output by the sound wave output port 11, including the first sound wave 111, the second sound wave 112, the fourth sound wave and the fifth sound wave, propagate in a divergent manner. The first functional structure 20 includes multiple first functional regions 21 and multiple second functional regions 22, which are arranged opposite to each other and distributed in a ring around the axis of the sound wave transmission channel 12.

[0050] Since the acoustic wave transmission channel 12 of the acoustic wave generator 10 has a certain length in its axial direction, and the acoustic wave will cause the acoustic wave generator 10 to vibrate during the propagation of the acoustic wave in the acoustic wave transmission channel 12, the vibration can propagate to the second target surface 203 and the first target surface 201 adjacent to the upper and lower positions of the acoustic wave generator 10, and can act on the dust, slag and other deposits on the second target surface 203 and the first target surface 201 above and below the acoustic wave generator 10. Thus, the vibration of the acoustic wave generator 10 itself can be used to reduce the rate of residual deposits on the second target surface 203 and the first target surface 201 above and below the acoustic wave generator 10, and can reduce the need to set up a ash removal structure above and below the acoustic wave generator 10, so as to simplify the structure of the acoustic soot blowing device 100 for the cement kiln SCR denitrification system.

[0051] The first functional structure 20 includes multiple first functional regions 21 and multiple second functional regions 22. The multiple first functional regions 21 and multiple second functional regions 22 are arranged opposite to each other and are distributed in a ring around the axis of the sound wave transmission channel 12. In other words, the first functional structure 20 is provided with multiple functional regions arranged in a ring. The multiple functional regions arranged in a ring are distributed around the axis of the sound wave transmission channel 12, and half of the multiple functional regions arranged in a ring are multiple first functional regions 21, and the other half are multiple second functional regions 22. The number, shape, and size of the first functional area 21 can be set according to the size and thickness of the sediment to be cleaned on the first target surface 201. The number, shape, and size of the second functional area 22 can be set according to the size and thickness of the sediment to be cleaned on the second target surface 203. For example, if the first target surface 201 is located below the second target surface 203, and the dust, slag, and other sediments on the second target surface 203 accumulate to a certain extent, they are likely to fall onto the first target surface 201 under their own gravity, making the sediment on the first target surface 201 more severe than that on the second target surface 203. Therefore, the number of first functional areas 21 can be more than the number of second functional areas 22, and the size of the first functional area 21 can be larger than the size of the second functional area 22.

[0052] In some embodiments, see Figure 1 and Figure 2 There is seamless connection between two adjacent first functional areas 21, between adjacent first functional areas 21 and second functional areas 22, and between two adjacent second functional areas 22.

[0053] Alternatively, it can be said that the first functional structure 20 is provided with multiple functional areas (including multiple first functional areas 21 and multiple second functional areas 22), and the multiple functional areas are distributed in a ring around the axis of the sound wave transmission channel 12. There are no gaps between adjacent functional areas and they are connected to each other (such as integral molding connection, screw connection, etc.).

[0054] In this embodiment, there is no gap between two adjacent functional areas, so that the second sound wave 112 generates the third sound wave 113 as much as possible, and the fifth sound wave generates the sixth sound wave as much as possible. This allows the first target surface 201 and the second target surface 203 to receive more sound waves of greater quantity and intensity, thereby achieving a more thorough dust removal operation. In addition, the interconnection of two adjacent functional areas can improve the integration and structural strength of the first functional structure 20.

[0055] In some embodiments, the first functional region 21 is planar or curved and recessed in the direction away from the first target surface 201; the second functional region 22 is planar or curved and recessed in the direction away from the second target surface 203.

[0056] The first functional area 21 can change the propagation direction of the second sound wave 112. Both planar and curved areas can achieve this function. Planar or curved settings can be flexibly selected. For example, if the raw materials include both planar and curved materials, then some of the first functional areas 21 can be planar, while others can be curved and concave in the direction away from the first target surface 201.

[0057] Similarly, the second functional area 22 can change the propagation direction of the fifth sound wave. Both planar and curved areas can achieve this function. Planar or curved settings can be flexibly selected. For example, if only curved materials are available in the raw materials, then all the second functional areas 22 can be curved surfaces that are concave in the direction away from the second target surface 203.

[0058] See one example. Figure 1 The first functional structure 20 is provided with a ring of functional regions, which are distributed around the axis of the sound wave transmission channel 12. Half of the ring of functional regions consists of multiple first functional regions 21, which are curved surfaces that are concave away from the first target surface 201. The other half consists of multiple second functional regions 22, which are curved surfaces that are concave away from the second target surface 203. There is seamless connection between two adjacent first functional regions 21, between adjacent first functional regions 21 and second functional regions 22, and between two adjacent second functional regions 22.

[0059] In some embodiments, see Figures 1 to 3The acoustic soot blowing device 100 for the SCR denitrification system of cement kiln may further include: a connecting structure 30, one end of which is connected to the first surface on the outside of the acoustic generator 10, and the other end is connected to the second surface of the first functional structure 20 facing away from the first functional area 21 and the third surface facing away from the second functional area 22.

[0060] The connecting structure 30 can be a solid rod, hollow tube, etc., with one end connected to the first surface of the outer side of the sound wave generator 10, and the other end connected to the second surface of the first functional structure 20 facing away from the first target surface 201 and the second target surface 203. This allows the connecting structure 30 to improve the integration of the acoustic soot blowing device 100 for the cement kiln SCR denitrification system. Furthermore, after the connecting structure 30 connects the sound wave generator 10 and the first functional structure 20, the vibrations of the sound wave generator 10 during sound wave generation and transmission can be controlled. Vibrations occurring during the process of guiding sound waves by the functional areas (such as the first functional area 21 and the second functional area 22) of the first functional structure 20 can be transmitted to the connecting structure 30, so that the connecting structure 30 can propagate these vibrations to the second region 2031 of the second target surface 203 and the first region 2011 of the first target surface 201 at its upper and lower positions, so as to achieve the cleaning (deposit) treatment of the second region 2031 of the second target surface 203 and the first region 2011 of the first target surface 201 at the upper and lower positions of the connecting structure 30.

[0061] In some embodiments, see Figure 2 , Figure 3 and Figure 5 The orthographic projection area of ​​the connecting structure 30 onto the first target surface 201 is designated as the first region 2011, and the orthographic projection area onto the second target surface 203 is designated as the second region 2031. The acoustic soot blowing device 100 for the cement kiln SCR denitrification system may further include: a second functional structure 40, which is disposed on the inner wall of the acoustic transmission channel 12 near the acoustic output port 11. The inner surface of the second functional structure 40 has a recessed third functional region 41, which is used to reflect and / or diffuse the acoustic waves propagating toward the first region 2011 and the second region 2031 into the acoustic transmission channel 12.

[0062] Since the connecting structure 30 can provide vibration to the first region 2011 and the second region 2031 to achieve the dust removal operation of the first region 2011 and the second region 2031, if the sound wave generator 10 also transmits sound waves to the first region 2011 and the second region 2031, it will result in waste or noise pollution due to asynchrony with the vibration provided by the connecting structure 30. Therefore, the third functional region 41 of the second functional structure 40 can control the sound waves (such as...) propagating to the first region 2011 and the second region 2031. Figure 5The B-wave (in the sound) is reflected and / or diffused into the sound wave transmission channel 12. When the sound wave reflected and / or diffused into the sound wave transmission channel 12 encounters the inner wall of the sound wave transmission channel 12 (such as the inner wall of the horn-shaped structure), it will be reflected and / or diffused and output through the sound wave output port 11 to re-form the first sound wave 111, the second sound wave 112, the fourth sound wave, the fifth sound wave, etc., which can directly or indirectly participate in the dust removal operation, thereby improving the utilization rate of sound waves.

[0063] The second functional structure 40 is annular and can be connected to the inner wall of the sound wave transmission channel 12 near the sound wave output port 11 by means of bonding, integral molding, etc. The second functional structure 40 can be flush with the sound wave output port 11 so that the sound wave generator 10 and the second functional structure 40 have a visually appealing flush appearance. The third functional area 41 can be an arc-shaped concave surface or a zigzag-shaped concave surface.

[0064] In some embodiments, the cross-sectional shape and size of the second functional structure 40 remain consistent at different locations. This simplifies the manufacturing process of the second functional structure 40, making it easier for mass production.

[0065] In some embodiments, the connection structure 30 is movably connected to the first surface, such that the connection structure 30 is capable of displacement in a direction parallel to and / or perpendicular to the axis of the acoustic wave transmission channel 12.

[0066] The movable connection method can be a sliding connection, a detachable connection, a rotating connection, etc., and sliding connections, detachable connections, and rotating connections are conventional mechanical connection methods. With the support of the movable connection method, the connection structure 30 can be displaced in a direction parallel to and / or perpendicular to the axis of the sound wave transmission channel 12, so as to adjust the position of the first functional structure 20 relative to the sound wave output port 11, so that the positions of the first functional area 21 and the second functional area 22 change, so as to adapt to the setting of the first target surface 201 and the second target surface 203 at different positions.

[0067] In some embodiments, the sound wave output port 11 is configured to output a first sound wave 111, a second sound wave 112, a fourth sound wave, and a fifth sound wave sequentially or simultaneously. That is, the sound wave output port 11 can output the first sound wave 111 first and then the second sound wave 112, or it can output the first sound wave 111 and the second sound wave 112 simultaneously.

[0068] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0069] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner.

Claims

1. An acoustic soot blowing device for a cement kiln SCR denitrification system, characterized in that, include: A sound wave generator having a sound wave output port, the sound wave generator being configured to output at least a first sound wave and a second sound wave through the sound wave output port, the first sound wave propagating along a first propagation path and the second sound wave propagating along a second propagation path different from the first propagation path. The first functional structure includes at least one first functional area, which is disposed on the second propagation path and is used to interact with the second sound wave to generate at least a third sound wave with a changed propagation direction and an intensity less than that of the second sound wave. The third sound wave propagates along the third propagation path, and both the first propagation path and the third propagation path pass through a first target surface, so that both the first sound wave and the third sound wave can act on the first target surface, which is the surface where the area to be cleaned or slag is located. The sound wave generator is further configured to output a fourth sound wave and a fifth sound wave through the sound wave output port, wherein the fourth sound wave propagates along a fourth propagation path and the fifth sound wave propagates along a fifth propagation path different from the fourth propagation path. The first functional structure further includes at least one second functional area, which is disposed on the fifth propagation path and is used to interact with the fifth sound wave to generate at least a sixth sound wave with a changed propagation direction and an intensity less than that of the fifth sound wave. The sixth sound wave propagates along the sixth propagation path, and both the fourth and sixth propagation paths pass through the second target surface so that the fourth and sixth sound waves can act on the second target surface. The second target surface is the surface where the area to be cleaned or slag is located and is disposed opposite to the first target surface. The sound wave transmission channel of the sound wave generator is a horn-shaped structure, with a sound wave input port and a sound wave output port at its two ends. The diameter of the sound wave output port is larger than the diameter of the sound wave input port, so that the multiple sound waves output from the sound wave output port, including the first sound wave, the second sound wave, the fourth sound wave and the fifth sound wave, propagate in a divergent manner. The first functional structure includes multiple first functional regions and multiple second functional regions, which are arranged opposite to each other and distributed in a ring around the axis of the sound wave transmission channel; The acoustic soot blowing device for the SCR denitrification system of the cement kiln also includes: A connecting structure is provided, with one end connected to a first surface on the outside of the sound wave generator, and the other end connected to a second surface of the first functional structure facing away from the first functional area and a third surface facing away from the second functional area; the orthographic projection area of ​​the connecting structure onto the first target surface is a first region, and the orthographic projection area onto the second target surface is a second region; The second functional structure is disposed on the inner wall of the sound wave transmission channel near the sound wave output port. The inner surface of the second functional structure has a recessed third functional area, which is used to reflect and / or diffuse sound waves propagating to the first area and the second area into the sound wave transmission channel.

2. The acoustic soot blowing device for the SCR denitrification system of a cement kiln according to claim 1, characterized in that, There is seamless connection between two adjacent first functional areas, between two adjacent first functional areas and second functional areas, and between two adjacent second functional areas.

3. The acoustic soot blowing device for the SCR denitrification system of cement kilns according to claim 2, characterized in that, The first functional area is planar or curved, concave in a direction away from the first target surface; The second functional area is planar or curved, concave in a direction away from the second target surface.

4. The acoustic soot blowing device for the SCR denitrification system of a cement kiln according to claim 1, characterized in that, The cross-sectional shape and size of the second functional structure remain consistent at different locations.

5. The acoustic soot blowing device for the SCR denitrification system of a cement kiln according to claim 1, characterized in that, The connection structure is movably connected to the first surface, allowing the connection structure to be displaced in a direction parallel to and / or perpendicular to the axis of the acoustic wave transmission channel.

6. The acoustic soot blowing device for the SCR denitrification system of a cement kiln according to claim 1, characterized in that, The sound wave output port is configured to output the first sound wave, the second sound wave, the fourth sound wave, and the fifth sound wave sequentially or simultaneously.

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