Desulfurizing tower and conflux ring assembly thereof

Abstract

The utility model relates to a desulfurizing tower and a conflux ring assembly thereof, the conflux ring assembly comprises a first conflux ring, the first conflux ring is used for being arranged below a spraying layer closest to a flue gas inlet of a tower body, the outer ring of the first conflux ring is used for being connected with the inner wall of the tower body, and a plurality of first through holes and a plurality of second through holes are formed in the first conflux ring; the plurality of first through holes and the plurality of second through holes are used for flue gas to pass through, the plurality of first through holes and the plurality of second through holes are arranged at intervals in the circumferential direction of the first flow gathering ring, the connecting line of the centers of the plurality of first through holes is annular, and the connecting line of the centers of the plurality of second through holes is arc-shaped; the plurality of second through holes are positioned between the plurality of first through holes and the outer ring of the first flow gathering ring, and the plurality of second through holes are positioned on one side, far away from the flue gas inlet, of the first flow gathering ring. The conflux ring assembly of the desulfurizing tower is used for improving the uniformity of gas-liquid reaction in the desulfurizing tower, so that the gas-liquid reaction efficiency of the desulfurizing tower is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of desulfurization towers, and in particular to a desulfurization tower and a focusing ring assembly thereof. Background Art

[0002] A wet flue gas desulfurization tower is a device used for flue gas desulfurization. It primarily removes SO2 by chemically reacting SO2 in the flue gas with an absorbent (usually limestone or gypsum) through the tower's spray layer, generating sulfate. The efficiency of gas-liquid contact in this process has a significant impact on the desulfurization effect.

[0003] In the related art, the efficiency of gas-liquid contact is improved by setting a focusing ring under the spray layer of the desulfurization tower. However, since the flue gas mostly enters the tower body from the flue gas inlet on one side of the bottom of the tower body and is discharged from the flue gas outlet at the top of the tower body, when the flue gas passes through the focusing ring closest to the flue gas inlet, the flow rate of the flue gas on the side close to the flue gas inlet is quite different from the flow rate on the side far from the flue gas inlet, which affects the flow rate of the flue gas on both sides of the tower body, thereby affecting the efficiency of gas-liquid contact. Utility Model Content

[0004] The purpose of the present disclosure is to provide a desulfurization tower and a focusing ring assembly thereof to solve the technical problems existing in the related art.

[0005] To achieve the above-mentioned object, according to a first aspect of the present disclosure, there is provided a focusing ring assembly for a desulfurization tower, comprising a first focusing ring, the first focusing ring being arranged below a spray layer closest to a flue gas inlet of a tower body, the outer ring of the first focusing ring being connected to an inner wall of the tower body;

[0006] Wherein, a plurality of first through holes and a plurality of second through holes are formed on the first focusing ring, and the plurality of first through holes and the plurality of second through holes are all used for allowing flue gas to pass through. The plurality of first through holes and the plurality of second through holes are all arranged at intervals along the circumference of the first focusing ring, and the line connecting the centers of the plurality of first through holes is annular, and the line connecting the centers of the plurality of second through holes is arc-shaped. The plurality of second through holes are located between the plurality of first through holes and the outer ring of the first focusing ring, and the plurality of second through holes are located on the side of the first focusing ring away from the flue gas inlet.

[0007] Optionally, the center of the inner ring of the first focusing ring is eccentrically arranged relative to the center of the outer ring of the first focusing ring, and the center of the inner ring of the first focusing ring is located between the center of the outer ring of the first focusing ring and the flue gas inlet.

[0008] Optionally, a central angle formed by a line connecting the centers of two of the plurality of second through holes located at both ends to the center of the outer ring of the first focusing ring is less than or equal to 180°.

[0009] Optionally, a diameter of the first through hole is the same as a diameter of the second through hole.

[0010] Optionally, the distance between the center of the second through hole and the outer ring of the first focusing ring is 50 mm-100 mm.

[0011] Optionally, the focusing ring assembly further includes a second focusing ring, the second focusing ring is used to be arranged in the tower body, and the outer ring of the second focusing ring is used to be connected to the inner wall of the tower body;

[0012] The second focusing ring is arranged above the first focusing ring. A plurality of third through holes for flue gas to pass through are formed on the second focusing ring. The plurality of third through holes are arranged at intervals along the circumference of the second focusing ring. The line connecting the centers of the plurality of third through holes is annular.

[0013] Optionally, a plurality of first V-shaped grooves are formed on the inner ring of the first focusing ring, and the plurality of first V-shaped grooves are arranged at intervals along the circumference of the first focusing ring; a plurality of second V-shaped grooves are formed on the inner ring of the second focusing ring, and the plurality of second V-shaped grooves are arranged at intervals along the circumference of the second focusing ring;

[0014] wherein the angle between the two side walls of the first V-shaped groove is greater than the angle between the two side walls of the second V-shaped groove; and / or,

[0015] The depth of the first V-shaped groove is greater than the depth of the second V-shaped groove; and / or,

[0016] The distance between two adjacent first V-shaped grooves is greater than the distance between two adjacent second V-shaped grooves.

[0017] Optionally, the second focusing ring is provided in plurality, the plurality of second focusing rings are all located above the first focusing ring, and the plurality of second focusing rings are spaced apart in the up-down direction.

[0018] According to the second aspect of the present disclosure, the present disclosure provides a desulfurization tower, including a tower body and the above-mentioned focusing ring assembly, a spray layer is arranged in the tower body, a flue gas inlet is formed on the tower body, and the first focusing ring of the focusing ring assembly is arranged below the spray layer closest to the flue gas inlet.

[0019] Optionally, there are multiple spray layers, and the multiple spray layers are spaced apart in the vertical direction;

[0020] The focusing ring assembly further includes at least one second focusing ring, the second focusing ring being located above the first focusing ring, each of the second focusing rings being formed with a plurality of third through holes for allowing smoke to pass through, the plurality of third through holes being arranged at intervals along the circumference of the second focusing ring, and a line connecting the centers of the plurality of third through holes being annular;

[0021] There are two spray layers between the second focusing ring closest to the first focusing ring and the first focusing ring.

[0022] Through the above technical solution, the first focusing ring is set below the spray layer of the flue gas inlet closest to the tower body, which can guide the flue gas entering the tower body to move upward from the inner circle of the first focusing ring, thereby preventing the flue gas close to the inner wall of the tower body from escaping directly from the flue gas outlet at the top of the tower body without undergoing gas-liquid reaction with the absorption liquid or insufficiently reacting with the absorption liquid during the process of moving upward along the inner wall of the tower body. This is beneficial to improving the gas-liquid contact efficiency and the gas-liquid reaction efficiency, and avoiding excessively high SO2 concentration in the emitted flue gas, which causes environmental pollution.

[0023] In addition, multiple first through holes and multiple second through holes are arranged at intervals along the circumference of the first focusing ring, which is beneficial to reducing the resistance of smoke passing through the first focusing ring, increasing the smoke flow rate, and also beneficial for the smoke to pass through the first through holes and the second through holes evenly, thereby improving the stability of the smoke flow.

[0024] Moreover, since the second through hole is arranged on the side of the first focusing ring away from the flue gas inlet, the flue gas on the side close to the flue gas inlet passes through the first through hole on the first focusing ring close to the flue gas inlet, and the flue gas on the side away from the flue gas inlet passes through the first through hole and the second through hole on the side away from the flue gas inlet on the first focusing ring, thereby speeding up the efficiency of the flue gas on the side away from the flue gas inlet passing through the first focusing ring, that is, it can increase the flow rate of the flue gas rising from the side away from the flue gas inlet, so that the flow rates of the flue gas on the side close to the flue gas inlet and the side away from the flue gas inlet in the tower body tend to be the same when passing through the first focusing ring, which is beneficial to the uniform distribution of the flue gas flow field in the desulfurization tower, thereby improving the gas-liquid contact efficiency and desulfurization efficiency.

[0025] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0027] Figure 1 is a schematic structural diagram of a desulfurization tower provided by an exemplary embodiment of the present disclosure;

[0028] Figure 2 is a top view of a first focusing ring of a focusing ring assembly provided by an exemplary embodiment of the present disclosure;

[0029] Figure 3 FIG. 1 is a top view of a second focusing ring of a focusing ring assembly provided by an exemplary embodiment of the present disclosure.

[0030] Description of Reference Numerals

[0031] 100-focusing ring assembly; 1-first focusing ring; 11-inner ring of the first focusing ring; 12-outer ring of the first focusing ring; 13-first through hole; 14-second through hole; 15-first V-shaped groove; 2-second focusing ring; 21-third through hole; 22-second V-shaped groove; 200-desulfurization tower; 20-tower body; 30-flue gas inlet; 40-flue gas outlet; 50-spray layer. DETAILED DESCRIPTION

[0032] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0033] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element; when an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0034] In the present disclosure, unless otherwise stated, the directional words used, such as "up, down, top, and bottom", are generally defined as the "up, down, top, and bottom" of the desulfurization tower under normal use conditions. They are only for the convenience of describing the present disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present disclosure. "Inside and outside" refer to the inside and outside of the outline of the corresponding component. In addition, the terms "first", "second", etc. are only used to distinguish descriptions, such as "first focusing ring", "second focusing ring", etc., and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements; for ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0036] See also Figure 1-Figure 3 According to a first aspect of the present disclosure, a focusing ring assembly 100 for a desulfurization tower is provided. The focusing ring assembly 100 includes a first focusing ring 1. The first focusing ring 1 is configured to be positioned below a spray layer 50 closest to a flue gas inlet 30 of a tower body 20. The outer ring 12 of the first focusing ring is configured to be connected to the inner wall of the tower body 20. A plurality of first through holes 13 and a plurality of second through holes 14 are formed in the first focusing ring 1. Both the plurality of first through holes 13 and the plurality of second through holes 14 are configured to allow flue gas to pass through. The plurality of first through holes 13 and the plurality of second through holes 14 are spaced apart along the circumference of the first focusing ring 1. A line connecting the centers of the plurality of first through holes 13 is annular, and a line connecting the centers of the plurality of second through holes 14 is arc-shaped. The plurality of second through holes 14 are located between the plurality of first through holes 13 and the outer ring 12 of the first focusing ring, and the plurality of second through holes 14 are located on a side of the first focusing ring 1 away from the flue gas inlet 30.

[0037] Since the flue gas enters the tower body 20 from the flue gas inlet 30 on the bottom side of the desulfurization tower 200, in the tower body 20, the flow rate of the flue gas on the side close to the flue gas inlet 30 is higher than the flow rate of the flue gas on the side away from the flue gas inlet 30. By arranging multiple second through holes 14 between multiple first through holes 13 and the outer ring 12 of the first focusing ring, and multiple second through holes 14 are arranged on the side of the first focusing ring 1 away from the flue gas inlet 30, the flue gas close to the flue gas inlet 30 can pass through the first through hole 13 on the side of the first focusing ring 1 close to the flue gas inlet 30, and the flue gas away from the flue gas inlet 30 can pass through the first through hole 13 and the second through hole 14 on the side of the first focusing ring 1 away from the flue gas inlet 30, so that the difference between the flow rate of the flue gas on the side close to the flue gas inlet 30 and the flow rate of the flue gas on the side away from the flue gas inlet 30 is reduced.

[0038] Through the above technical solution, the first focusing ring 1 is set below the spray layer 50 of the flue gas inlet 30 closest to the tower body 20, which can guide the flue gas entering the tower body 20 to move upward from the inner ring 11 of the first focusing ring, thereby preventing the flue gas close to the inner wall of the tower body 20 from escaping directly from the flue gas outlet 40 at the top of the tower body 20 without undergoing gas-liquid reaction with the absorption liquid or insufficiently reacting with the absorption liquid during the process of moving upward along the inner wall of the tower body 20. This is beneficial to improving the gas-liquid contact efficiency and the gas-liquid reaction efficiency, and avoiding excessively high SO2 concentration in the emitted flue gas, which causes environmental pollution.

[0039] In addition, multiple first through holes 13 and multiple second through holes 14 are arranged at intervals along the circumference of the first focusing ring 1, which is beneficial to reducing the resistance of the flue gas passing through the first focusing ring 1 and increasing the flue gas flow rate. It is also beneficial for the flue gas to pass through the first through holes 13 and the second through holes 14 evenly, thereby improving the stability of the flue gas flow.

[0040] Moreover, since the second through hole 14 is arranged on the side of the first focusing ring 1 away from the flue gas inlet 30, the flue gas on the side close to the flue gas inlet 30 passes through the first through hole 13 on the first focusing ring 1 close to the flue gas inlet 30, and the flue gas on the side away from the flue gas inlet 30 passes through the first through hole 13 and the second through hole 14 on the side of the first focusing ring 1 away from the flue gas inlet 30, thereby accelerating the efficiency of the flue gas on the side away from the flue gas inlet 30 passing through the first focusing ring 1, that is, it can increase the flow rate of the flue gas rising from the side away from the flue gas inlet 30, so that the flow rates of the flue gas on the side close to the flue gas inlet 30 and the side away from the flue gas inlet 30 in the tower body 20 tend to be the same when passing through the first focusing ring 1, which is beneficial to the uniform distribution of the flue gas flow field in the desulfurization tower 200, thereby improving the gas-liquid contact efficiency and the desulfurization efficiency.

[0041] Here, the outer ring 12 of the first focusing ring is used to connect to the inner wall of the tower body 20. The present disclosure does not limit the connection method between the first focusing ring 1 and the inner wall of the tower body 20. It can be detachably connected to the inner wall of the tower body 20 through a support structure formed into a stepped surface, or it can be fixedly connected to the inner wall of the tower body 20 by welding or other methods. When the first focusing ring 1 is detachably connected to the inner wall of the tower body 20, the difficulty of disassembly and assembly of the first focusing ring 1 can be reduced, and the desulfurization tower 200 or the first focusing ring 1 can be easily inspected or replaced. When the first focusing ring 1 is fixedly connected to the inner wall of the tower body 20, the stability of the first focusing ring 1 can be improved, and the absorption liquid sprayed from the spray layer 50 can be prevented from impacting the first focusing ring 1 and causing displacement, thereby ensuring that the first focusing ring 1 can operate stably.

[0042] The present disclosure does not limit the specific number of the first through holes 13 and the second through holes 14 on the first focusing ring 1. The number of the first through holes 13 and the second through holes 14 is based on the ability to ensure uniform flow velocity of the flue gas at all locations on the inner wall of the tower body 20 and improve the gas-liquid contact efficiency, that is, it is suitable for actual production needs.

[0043] Optionally, the first through holes 13 and the second through holes 14 on the first focusing ring 1 away from the flue gas inlet 30 are distributed in an array, and the centers of adjacent first through holes 13 and second through holes 14 are located on the same straight line extending radially, and multiple of these straight lines intersect at the center of the inner ring 11 of the first focusing ring. In this way, the flue gas can pass through the first through holes 13 and the second through holes 14 evenly, thereby improving the stability of the flue gas flow.

[0044] In the present disclosure, the upper surface of the first focusing ring 1 is tilted downward, while the lower surface of the first focusing ring 1 is tilted upward, in the direction from the outer ring 12 of the first focusing ring toward the inner ring 11 thereof. Because the absorption liquid sprayed from the nozzles of the spray layer 50 near the inner wall of the tower body 20 easily scours the inner wall of the tower body 20, generating wall flow that is detrimental to gas-liquid contact and easily causes the inner wall of the tower body 20 to break, by setting the upper surface of the first focusing ring 1 to tilt downward, the absorption liquid that falls on the inner wall of the tower body 20 can be guided to fall from the first focusing ring 1, preventing the wall flow from affecting the inner wall of the tower body 20. This can also effectively prevent the absorption liquid sprayed from the spray layer 50 from lingering on the upper surface of the first focusing ring 1 and affecting gas-liquid contact. The rising flue gas contacts the lower surface of the first focusing ring 1. The upward tilt of the lower surface of the first focusing ring 1 can guide the flue gas to converge toward the inner ring 11 of the first focusing ring, thereby improving the gas-liquid contact efficiency between the flue gas and the absorption liquid.

[0045] Optionally, the angle between the upper surface of the first focusing ring 1 and the inner wall of the tower body 20 is 70°-80°, and the angle between the lower surface of the first focusing ring 1 and the inner wall of the tower body 20 is 70°-80°.

[0046] See also Figure 2 Optionally, the center of the inner ring 11 of the first focusing ring is eccentrically arranged relative to the center of the outer ring 12 of the first focusing ring, and the center of the inner ring 11 of the first focusing ring is located between the center of the outer ring 12 of the first focusing ring and the flue gas inlet 30.

[0047] In this way, on the one hand, the time for the flue gas to reach the inner ring 11 of the first focusing ring can be shortened, the flue gas passage rate can be increased, and the gas-liquid reaction efficiency is beneficial. On the other hand, the center of the inner ring 11 of the first focusing ring is eccentrically arranged toward the flue gas inlet 30 compared to the center of the outer ring 12 of the first focusing ring, ensuring that there is enough space on the side of the first focusing ring 1 away from the flue gas inlet 30 for arranging the second through hole 14, and at the same time, it is beneficial to ensure the overall structural strength of the first focusing ring 1, and avoid the structural strength of the side of the first focusing ring 1 away from the flue gas inlet 30 being reduced due to the setting of the second through hole 14.

[0048] See also Figure 2 In the present disclosure, the central angle formed by the line connecting the centers of two of the multiple second through holes 14 located at both ends to the center of the outer ring 12 of the first focusing ring is less than or equal to 180°. In other words, the second through holes 14 are all located within the semi-circular region of the first focusing ring 1 away from the flue gas inlet 30. This arrangement ensures that the second through holes 14 are all located on the side of the first focusing ring 1 away from the flue gas inlet 30, preventing an imbalance in the flue gas flow rate on both sides of the first focusing ring 1, which could affect gas-liquid contact efficiency, and promoting stable and uniform flue gas flow.

[0049] In a specific embodiment provided in the present disclosure, the central angle formed by the line connecting the centers of two second through holes 14 located at both ends of the multiple second through holes 14 to the center of the outer ring 12 of the first focusing ring is equal to 180°. In other embodiments, the angle can also be any angle such as 120°, 150°, etc., subject to actual production needs.

[0050] See also Figure 2 To ensure uniform flue gas flow, the diameter of the first through hole 13 is the same as that of the second through hole 14. This ensures that the flue gas takes the same amount of time to pass through the first through hole 13 and the second through hole 14, thereby ensuring uniform flue gas flow and improving the stability of the flue gas flow.

[0051] The present disclosure does not limit the specific diameters of the first through hole 13 and the second through hole 14. For example, in one embodiment provided in the present disclosure, the diameters of the second through hole 13 and the second through hole 14 are both 50 mm. In other embodiments, the diameters of the first through hole 13 and the second through hole 14 can also be set to 30 mm or 40 mm.

[0052] In addition, the present disclosure does not limit the shapes of the first through hole 13 and the second through hole 14. They can be circular through holes, or polygonal through holes such as triangular through holes or regular polygonal through holes.

[0053] See also Figure 2 In the present disclosure, the distance between the center of the second through hole 14 and the outer ring 12 of the first focusing ring is 50 mm-100 mm.

[0054] If the distance between the second through hole 14 and the outer ring 12 of the first focusing ring is less than 50 mm, it is easy for the absorption liquid flowing along the inner wall of the tower body 20 to continue to flow downward along the inner wall of the tower body 20 after passing through the second through hole 14. Such a setting can effectively avoid wall flow. In addition, since part of the flue gas will flow upward along the inner wall of the tower body 20 during the rising process, by setting the second through hole 14 at 50 mm-100 mm away from the outer ring 12 of the first focusing ring, it can avoid the flue gas being blocked during the rising process and staying at the bottom of the first focusing ring 1 close to the inner wall of the tower body 20, which facilitates the passage of flue gas and is beneficial to the circulation of flue gas.

[0055] See also Figure 1 and Figure 3 In one embodiment of the present disclosure, the focusing ring assembly 100 further includes a second focusing ring 2, which is disposed within the tower body 20, and whose outer ring is connected to the inner wall of the tower body 20. The second focusing ring 2 is disposed above the first focusing ring 1 and is formed with a plurality of third through holes 21 for allowing flue gas to pass through. The plurality of third through holes 21 are spaced apart circumferentially around the second focusing ring 2, and a line connecting the centers of the plurality of third through holes 21 forms a ring.

[0056] The desulfurization tower 200 is generally equipped with multiple spray layers 50. The second focusing ring 2 is arranged below the spray layer 50, away from the flue gas inlet 30. By placing the second focusing ring 2 below the multiple spray layers 50, it can effectively prevent the generation of wall flow in the spray layer 50 while also facilitating gas-liquid contact, thereby improving the gas-liquid reaction efficiency. The second focusing ring 2 is provided with multiple third through-holes 21. The third through-holes 21 are used to allow flue gas to pass through, while also helping to reduce the resistance of the flue gas passage, increase the flue gas flow rate, and accelerate the gas-liquid reaction efficiency. The multiple third through-holes 21 are arranged at intervals along the circumference of the second focusing ring 2, and the line connecting the centers of the third through-holes 21 is annular, which promotes the stability and uniformity of the flue gas passing through the second focusing ring 2.

[0057] Here, the diameter of the third through hole 21 may be the same as the diameters of the first through hole 13 and the second through hole 14 , so as to ensure the stability of the flue gas during its ascent in the desulfurization tower 200 .

[0058] Likewise, the present disclosure does not limit the shape of the third through hole 21 , and the first through hole 13 may be a circular through hole, or a polygonal through hole such as a triangle or a regular direction through hole.

[0059] See also Figure 2 and Figure 3 Optionally, a plurality of first V-shaped grooves 15 are formed on the inner ring 11 of the first focusing ring, and the plurality of first V-shaped grooves 15 are arranged at intervals along the circumference of the first focusing ring 1, and a plurality of second V-shaped grooves 22 are formed on the inner ring of the second focusing ring 2, and the plurality of second V-shaped grooves 22 are arranged at intervals along the circumference of the second focusing ring 2.

[0060] Wherein, the angle between the two side walls of the first V-shaped groove 15 is greater than the angle between the two side walls of the second V-shaped groove 22; and / or,

[0061] The depth of the first V-shaped groove 15 is greater than the depth of the second V-shaped groove 22; and / or,

[0062] The distance between two adjacent first V-shaped grooves 15 is greater than the distance between two adjacent second V-shaped grooves 22 .

[0063] In this way, on the one hand, when the flue gas passes through the inner rings of the first and second focusing rings 1 and 2, the first V-shaped grooves 15 and the second V-shaped grooves 22 can disperse the flue gas, that is, they can increase the flow area of ​​the flue gas, thereby increasing the contact area between the flue gas and the absorption liquid. On the other hand, the first V-shaped grooves 15 and the second V-shaped grooves 22 can reduce the resistance of the flue gas when it passes through the inner rings of the first and second focusing rings 1 and 2, increase the flue gas flow rate, and promote the efficiency of the gas-liquid reaction. On the other hand, when the flue gas rises and contacts the first and second focusing rings 1 and 2, the water vapor in the flue gas will adhere to the bottom of the first and second focusing rings 1 and 2. By forming the first V-shaped grooves 15 and the second V-shaped grooves 22 on the inner rings of the first and second focusing rings 1 and 2, the water vapor attached to the bottom of the first and second focusing rings 1 and 2 can be guided to flow to the tips of the V-shaped grooves and fall, facilitating the recovery of the water vapor.

[0064] Furthermore, because the flue gas entering the tower body 20 first contacts the first focusing ring 1, at least one of the angle, depth, and spacing between the two sidewalls of the first V-shaped groove 15 is configured to be greater than at least one of the angle, depth, and spacing between the two sidewalls of the second V-shaped groove 22. This configuration ensures that the resistance encountered by the flue gas when passing through the first focusing ring 1 is less than the resistance encountered when passing through the second focusing ring 2, which helps increase the flow rate of the flue gas after passing through the first focusing ring 1, thereby improving the contact efficiency and reaction efficiency between the flue gas and the absorption liquid.

[0065] In the present disclosure, a plurality of second focusing rings 2 are provided, and the plurality of second focusing rings 2 are all located above the first focusing ring 1 , and the plurality of second focusing rings 2 are spaced apart in the vertical direction.

[0066] It should be noted that if the desulfurization tower 200 has one spray layer 50, a first focusing ring 1 can be set at the bottom of the spray layer 50; if the desulfurization tower 200 has multiple spray layers 50, it is ensured that the first focusing ring 1 is set at the bottom of the spray layer 50 closest to the flue gas inlet 30, and the second focusing ring 2 is set at the bottom of other spray layers 50 at intervals. For example, the desulfurization tower 200 has three spray layers 50, and the first focusing ring 1 is set at the bottom of the third spray layer 50 from top to bottom, and the second focusing ring 2 is set at the bottom of the first spray layer 50. If the desulfurization tower 200 has four spray layers 50, the first focusing ring 1 is set at the bottom of the fourth spray layer 50 from top to bottom, and the second focusing ring 2 is set at the bottom of the second spray layer 50, that is, two spray layers 50 are set between two adjacent focusing rings, and so on.

[0067] Arranging multiple focusing rings in a desulfurization tower 200 having multiple spray layers 50 can improve the gas-liquid reaction efficiency. At the same time, in addition to the first focusing ring 1 arranged at the bottom of the spray layer 50 closest to the flue gas inlet 30, multiple second focusing rings 2 are arranged at intervals in the upper and lower directions at the bottom of other spray layers 50, which can effectively reduce the resistance to the rising of the flue gas and avoid affecting the flue gas flow rate due to the excessive number of focusing rings.

[0068] See also Figure 1-Figure 3 According to the second aspect of the present disclosure, a desulfurization tower 200 is provided, including a tower body 20 and the above-mentioned focusing ring assembly 100, a spray layer 50 is provided in the tower body 20, a flue gas inlet 30 and a flue gas outlet 40 are formed on the tower body 20, and the first focusing ring 1 of the focusing ring assembly 100 is arranged below the spray layer 50 closest to the flue gas inlet 30.

[0069] See also Figure 1-Figure 3 In the present disclosure, there are multiple spray layers 50, and the multiple spray layers 50 are arranged at intervals in the vertical direction; the focusing ring assembly 100 also includes at least one second focusing ring 2, which is located above the first focusing ring 1. The second focusing ring 2 is formed with multiple third through holes 21 for allowing flue gas to pass through. The multiple third through holes 21 are arranged at intervals along the circumference of the second focusing ring 2, and the line connecting the centers of the multiple third through holes 21 is annular; there are two spray layers 50 between the second focusing ring 2 closest to the first focusing ring 1 and the first focusing ring 1.

[0070] For the embodiment in which there are multiple second focusing rings 2 , there are two spray layers 50 between every two adjacent second focusing rings 2 .

[0071] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0072] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0073] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A focusing ring assembly for a desulfurization tower, characterized in that: It includes a first focusing ring, which is used to be arranged below the spray layer closest to the flue gas inlet of the tower body, and the outer ring of the first focusing ring is used to be connected to the inner wall of the tower body; Wherein, a plurality of first through holes and a plurality of second through holes are formed on the first focusing ring, and the plurality of first through holes and the plurality of second through holes are all used for allowing flue gas to pass through. The plurality of first through holes and the plurality of second through holes are all arranged at intervals along the circumference of the first focusing ring. The line connecting the centers of the plurality of first through holes is annular, and the line connecting the centers of the plurality of second through holes is arc-shaped. The plurality of second through holes are located between the plurality of first through holes and the outer ring of the first focusing ring, and the plurality of second through holes are located on the side of the first focusing ring away from the flue gas inlet.

2. The focusing ring assembly according to claim 1, characterized in that: The center of the inner ring of the first focusing ring is eccentrically arranged relative to the center of the outer ring of the first focusing ring, and the center of the inner ring of the first focusing ring is located between the center of the outer ring of the first focusing ring and the flue gas inlet.

3. The focusing ring assembly according to claim 1, characterized in that: A central angle formed by a line connecting the centers of two of the second through holes located at both ends of the plurality of second through holes to the center of the outer ring of the first focusing ring is less than or equal to 180°.

4. The focusing ring assembly according to claim 1, characterized in that: The diameter of the first through hole is the same as the diameter of the second through hole.

5. The focusing ring assembly according to claim 1, characterized in that: The distance between the center of the second through hole and the outer circle of the first focusing ring is 50 mm-100 mm.

6. The focusing ring assembly according to any one of claims 1 to 5, characterized in that: The focusing ring assembly further includes a second focusing ring, the second focusing ring is used to be arranged in the tower body, and the outer ring of the second focusing ring is used to be connected to the inner wall of the tower body; The second focusing ring is arranged above the first focusing ring. A plurality of third through holes for flue gas to pass through are formed on the second focusing ring. The plurality of third through holes are arranged at intervals along the circumference of the second focusing ring. The line connecting the centers of the plurality of third through holes is annular.

7. The focusing ring assembly according to claim 6, characterized in that: A plurality of first V-shaped grooves are formed on the inner ring of the first focusing ring, and the plurality of first V-shaped grooves are arranged at intervals along the circumference of the first focusing ring; a plurality of second V-shaped grooves are formed on the inner ring of the second focusing ring, and the plurality of second V-shaped grooves are arranged at intervals along the circumference of the second focusing ring; wherein the angle between the two side walls of the first V-shaped groove is greater than the angle between the two side walls of the second V-shaped groove; and / or, The depth of the first V-shaped groove is greater than the depth of the second V-shaped groove; and / or, The distance between two adjacent first V-shaped grooves is greater than the distance between two adjacent second V-shaped grooves.

8. The focusing ring assembly according to claim 6, characterized in that: The second focusing ring is provided in plurality, and the plurality of second focusing rings are all located above the first focusing ring, and the plurality of second focusing rings are spaced apart in the up-down direction.

9. A desulfurization tower, characterized in that: It comprises a tower body and a focusing ring assembly according to any one of claims 1 to 8, wherein a spray layer is provided in the tower body, a flue gas inlet is formed on the tower body, and the first focusing ring of the focusing ring assembly is provided below the spray layer closest to the flue gas inlet.

10. The desulfurization tower according to claim 9, characterized in that: There are multiple spray layers, and the multiple spray layers are spaced apart in the vertical direction; The focusing ring assembly further includes at least one second focusing ring, the second focusing ring being located above the first focusing ring, each of the second focusing rings being formed with a plurality of third through holes for allowing smoke to pass through, the plurality of third through holes being arranged at intervals along the circumference of the second focusing ring, and a line connecting the centers of the plurality of third through holes being annular; There are two spray layers between the second focusing ring closest to the first focusing ring and the first focusing ring.

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