Efficient spraying head for desulfurizing liquid

Abstract

The utility model relates to the technical field of desulfurizing towers, and discloses an efficient desulfurizing liquid spraying head which comprises a shell, a liquid inlet pipe and an air inlet pipe, the liquid inlet pipe and the air inlet pipe are arranged at the top of the shell and communicate with a mixing cavity through vertically-arranged flow guide sleeves correspondingly, and two sets of rotational flow guide plates are arranged on the inner wall of the mixing cavity in the axial direction at intervals; the bottom of the mixing cavity is connected with a flow guide cone which is gradually shrunk downwards, a plurality of inclined flow guide blades are evenly distributed on the conical surface of the flow guide cone in the circumferential direction, the outer side of the flow guide cone is sleeved with a flow guide ring which is concentrically arranged, and the inner wall of the flow guide ring is provided with an annular flow guide groove opposite to the extending direction of the flow guide blades. The splitter plate is provided with a plurality of circles of splitter holes which are alternately arranged in the circumferential direction, the bottom of the splitter plate is connected with a spraying hole plate, and the spraying hole plate is provided with a plurality of layers of spraying holes which are distributed in a concentric circle mode.

Description

Technical Field

[0001] This application belongs to the field of desulfurization tower technology, specifically relating to a high-efficiency spray head for desulfurization liquid. Background Technology

[0002] In the field of coke oven gas purification technology, HPF desulfurization is an oxidative desulfurization and decyanation process using ammonia as the alkali source and HPF as the catalyst. It has a catalytic effect on both the absorption and regeneration processes, and features high activity and good fluidity. It is widely used in coal gas desulfurization and decyanation. The rich desulfurization solution from the desulfurization tower is pumped into the bottom of the regeneration tower, while compressed air is introduced into the bottom of the regeneration tower to oxidize and regenerate the rich desulfurization solution. The regenerated lean desulfurization solution is returned to the desulfurization tower for recycling.

[0003] When in use, the desulfurized rich liquid at the bottom of the regeneration tower and the compressed air must be mixed evenly to achieve the ideal regeneration effect. In the existing technology, the desulfurized rich liquid at the bottom of the regeneration tower and the compressed air are generally directly introduced into the same pipeline for mixing, and then sprayed in the regeneration tower. However, this method is prone to insufficient mixing of the desulfurized rich liquid and the compressed air, which affects the regeneration effect of the desulfurized rich liquid and its use. Summary of the Invention

[0004] This application provides a high-efficiency spray head for desulfurization liquid to solve the aforementioned technical problem of insufficient mixing between desulfurization rich liquid and compressed air.

[0005] The technical solution adopted in this application is as follows:

[0006] A high-efficiency desulfurization liquid spray head includes a shell, an inlet pipe and an air inlet pipe disposed on the top of the shell. The inlet pipe and the air inlet pipe are respectively connected to a mixing chamber through vertically disposed guide sleeves. Two sets of swirling guide plates are disposed axially at intervals on the inner wall of the mixing chamber. A downwardly tapering guide cone is connected to the bottom of the mixing chamber. Multiple inclined guide blades are evenly distributed circumferentially on the conical surface of the guide cone. A concentrically arranged guide ring is sleeved on the outer side of the guide cone. An annular guide groove is opened on the inner wall of the guide ring, which is opposite to the extension direction of the guide blades. A horizontally arranged flow divider plate is disposed below the guide ring. Multiple rings of flow divider holes are alternately arranged circumferentially on the flow divider plate. A spray orifice plate is connected to the bottom of the flow divider plate. The spray orifice plate has multiple layers of spray holes distributed in concentric circles.

[0007] Optionally, the guide sleeve includes an inner sleeve and an outer sleeve nested together. The inner sleeve is connected to the liquid inlet pipe, and the outer sleeve is connected to the air inlet pipe, forming an annular air inlet channel between the two sleeves.

[0008] Optionally, a conical diffuser is provided at the bottom of the inner sleeve, with the maximum diameter end of the conical diffuser flush with the inner wall of the mixing chamber.

[0009] Optionally, the swirl guide plate includes an upper first swirl guide plate assembly and a lower second swirl guide plate assembly with the opposite swirl direction.

[0010] Optionally, the surface of the guide vanes of the guide cone is provided with uneven turbulence patterns.

[0011] Optionally, the cross-section of the annular guide groove of the guide ring is trapezoidal, and the groove depth varies periodically along the circumference.

[0012] Optionally, the flow divider plate has multiple groups of holes with different diameters, each group of holes is evenly distributed along the circumference and the hole diameter gradually decreases from the inside to the outside.

[0013] Optionally, the axis of the diversion hole forms a downward-sloping angle with the plane of the diversion plate.

[0014] Optionally, the multi-layered spray pattern of the spray plate includes vertical spray holes in the central region and inclined spray holes in the peripheral region.

[0015] Optionally, a flow hood is provided at the bottom of the spray orifice plate, and a flow guide groove corresponding to the extension direction of the spray orifice is formed on the surface of the flow hood.

[0016] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0017] 1. By combining the swirl guide plate and the guide cone, the gas-liquid mixing efficiency is improved, the atomization effect is enhanced, the droplet size is reduced, and the uniformity of spraying is improved;

[0018] 2. A double-layer guide sleeve is used to ensure that the gas enters the mixing chamber evenly, optimize gas-liquid mixing, and reduce spray deviation caused by uneven airflow.

[0019] 3. The double-layer swirl guide plate structure is adopted to make the liquid form an alternating swirling flow in the mixing chamber, which increases the gas-liquid contact time and improves the utilization rate of desulfurization liquid;

[0020] 4. Using a group of diversion holes with different diameters makes the spray flow distribution more reasonable, ensuring that the sprayed droplets are evenly covered in the entire spray area, reducing droplet accumulation. In addition, the diversion holes are tilted to give the droplets initial momentum, improve penetration ability, and ensure that the droplets can fully enter the reaction area, thereby improving desulfurization efficiency. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0022] Figure 1 This is a three-dimensional schematic diagram of a high-efficiency spray head for desulfurization liquid according to this application;

[0023] Figure 2 This is a three-dimensional schematic diagram of the inner shell of a high-efficiency desulfurization liquid spray head according to this application;

[0024] Figure 3 This is a cross-sectional view of the flow guide sleeve in a high-efficiency spray head for desulfurization liquid according to this application;

[0025] Figure 4 This is a top view of the spray orifice plate in a high-efficiency spray head for desulfurization liquid according to this application.

[0026] 1. Outer shell; 2. Liquid inlet pipe; 3. Air inlet pipe; 4. Flow guide sleeve; 41. Inner sleeve; 42. Outer sleeve; 5. Swirl guide plate; 51. First swirl guide plate assembly; 52. Second swirl guide plate assembly; 6. Flow guide cone; 7. Flow guide ring; 8. Flow divider plate; 9. Spray orifice plate; 10. Conical diffuser; 11. Radiator. Detailed Implementation

[0027] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0029] A high-efficiency desulfurization liquid spray head includes a shell 1, an inlet pipe 2 and an air inlet pipe 3 disposed on the top of the shell 1. The inlet pipe 2 and the air inlet pipe 3 are respectively connected to a mixing chamber through a vertically disposed guide sleeve 4. Two sets of swirling guide plates 5 are disposed axially at intervals on the inner wall of the mixing chamber. A downwardly tapering guide cone 6 is connected to the bottom of the mixing chamber. Multiple inclined guide blades are evenly distributed circumferentially on the conical surface of the guide cone 6. A concentrically arranged guide ring 7 is sleeved on the outer side of the guide cone 6. An annular guide groove is opened on the inner wall of the guide ring 7, which is opposite to the extension direction of the guide blades. A horizontally arranged flow divider plate 8 is disposed below the guide ring 7. Multiple rings of flow divider holes are alternately arranged circumferentially on the flow divider plate 8. A spray orifice plate 9 is connected to the bottom of the flow divider plate 8. The spray orifice plate 9 is provided with multiple layers of spray holes distributed in concentric circles.

[0030] The outer shell 1 is a cylindrical structure with a liquid inlet pipe 2 and an air inlet pipe 3 at the top. The liquid inlet pipe 2 and the air inlet pipe 3 are connected to the mixing chamber through vertically arranged guide sleeves 4 to ensure uniform gas-liquid mixing. Two sets of swirling guide plates 5 are arranged axially along the inner wall of the mixing chamber. By changing the direction of liquid rotation, the mixing efficiency is improved, the gas-liquid contact area is increased, the droplet diameter is reduced, and the spraying efficiency is improved. The mixed liquid flows to the guide cone 6 at the bottom. The outer surface of the guide cone 6 is provided with inclined guide vanes, which disturb the gas-liquid flow path, increase the turbulence effect, and improve the atomization quality. The guide ring 7 is sleeved on the outside of the guide cone 6, and its inner wall is provided with an annular guide groove. This structure can form turbulence in the opposite direction, which further breaks up the droplets and improves the uniformity of spraying. Finally, the liquid is evenly distributed by the diverter plate 8 and enters the spray orifice plate 9 to form fine droplets, achieving efficient spraying.

[0031] Furthermore, the guide sleeve 4 includes an inner sleeve 41 and an outer sleeve 42 nested together. The inner sleeve 41 is connected to the liquid inlet pipe 2, and the outer sleeve 42 is connected to the air inlet pipe 3, forming an annular air inlet channel between the two sleeves.

[0032] The guide sleeve 4 adopts a double-layer structure, including an inner sleeve 41 and an outer sleeve 42, forming an annular air intake channel, so that the gas enters the mixing chamber evenly, improving the consistency of gas-liquid mixing and avoiding excessive or insufficient local airflow from affecting the atomization effect. The bottom of the inner sleeve 41 is provided with a conical diffuser 10, the maximum diameter end of which is flush with the inner wall of the mixing chamber, so that the airflow forms a stable axial flow when entering the mixing chamber, reducing eddy current loss and improving mixing stability.

[0033] Furthermore, the bottom of the inner sleeve 41 is provided with a conical diffuser 10, the maximum diameter end of the conical diffuser 10 being flush with the inner wall of the mixing chamber.

[0034] Furthermore, the swirl guide plate 5 includes an upper first swirl guide plate group 51 and a lower second swirl guide plate group 52 with the opposite swirl direction.

[0035] The swirl guide plate 5 adopts a two-layer structure. The first swirl guide plate group 51 and the second swirl guide plate group 52 are in opposite directions, so that the liquid forms an alternating swirling flow in the mixing chamber, increasing the gas-liquid contact time, so that the liquid is fully atomized and the utilization efficiency of the desulfurization liquid is improved.

[0036] Furthermore, the surface of the guide vanes of the guide cone 6 is provided with uneven turbulence patterns.

[0037] The guide vanes on the surface of the guide cone 6 are provided with turbulence patterns. These patterns can increase fluid adhesion, form small-scale secondary swirls, further promote droplet breakup, make the spray more uniform and delicate, and improve reaction efficiency.

[0038] Furthermore, the cross-section of the annular guide groove of the guide ring 7 is trapezoidal, and the groove depth varies periodically along the circumference.

[0039] The cross-section of the annular guide groove of the guide ring 7 is trapezoidal, and the groove depth changes periodically along the circumference, which causes pulse disturbance to the incoming airflow, breaks up large droplets, improves the uniformity of droplet distribution, and reduces the risk of nozzle clogging.

[0040] Furthermore, the flow divider plate 8 has multiple groups of holes with different diameters, each group of holes is evenly distributed along the circumference and the hole diameter gradually decreases from the inside to the outside.

[0041] The diversion plate 8 is equipped with multiple diversion holes of different diameters. Each group is evenly distributed along the circumference, and the hole diameter gradually decreases from the inside to the outside. This design can ensure that the desulfurization liquid is evenly distributed in the spray area, while optimizing the liquid flow rate so that it forms a suitable spray coverage range at different positions.

[0042] Furthermore, the axis of the diversion hole forms a downward-sloping angle with the plane of the diversion plate 8.

[0043] The axis of the diversion hole forms a downward inclined angle with the plane of the diversion plate 8, which gives the sprayed droplets a certain initial momentum, improves the droplet penetration ability, ensures that the desulfurization liquid can penetrate deep into the reaction area, and improves the desulfurization efficiency.

[0044] Furthermore, the multi-layered spray pattern of the spray plate 9 includes vertical spray holes in the central area and inclined spray holes in the outer area.

[0045] The spray plate 9 has multiple layers of spray holes, with vertical spray holes in the central area and inclined spray holes in the outer area. This distribution method can ensure that the sprayed droplets evenly cover the entire spray area, enhance the gas-liquid contact efficiency, and improve the desulfurization reaction effect.

[0046] Furthermore, the bottom of the spray nozzle plate 9 is provided with a flow hood 11, and the surface of the flow hood 11 is provided with a guide groove corresponding to the extension direction of the spray nozzle.

[0047] The bottom of the spray orifice plate 9 is provided with a hemispherical rectifier 11. The surface of the rectifier 11 is provided with a guide groove, which makes the liquid flow more stable, reduces turbulence, improves the uniformity of spraying, and at the same time reduces the interference of airflow on the trajectory of droplets, thereby improving the utilization rate of desulfurization liquid.

[0048] Working principle:

[0049] During operation, the desulfurization liquid enters the mixing chamber through the liquid inlet pipe 2, while air or other gaseous media are introduced into the mixing chamber through the air inlet pipe 3. The liquid inlet pipe 2 and the air inlet pipe 3 are respectively connected to the mixing chamber through the vertically set guide sleeve 4. The liquid and gas are fully mixed in the mixing chamber. At least two sets of swirling guide plates 5 are arranged axially along the inner wall of the mixing chamber. The first swirling guide plate group 51 in the upper layer and the second swirling guide plate group 52 in the lower layer rotate in opposite directions, thereby forming a strong swirling flow in the mixing chamber, which makes the gas-liquid mixing more complete.

[0050] The liquid-gas mixture passes through the bottom guide cone 6, whose conical surface has multiple inclined guide vanes evenly distributed around its circumference to further enhance the swirling effect. A concentrically arranged guide ring 7 is fitted on the outer side of the guide cone 6. The inner wall of the guide ring 7 has an annular guide groove that extends in the opposite direction to the guide vanes, so that the flow velocity of the liquid-gas mixture is further adjusted when it flows through the guide ring 7, and a more uniform spraying effect is formed.

[0051] The fluid continues to flow downward through the horizontally arranged diverter plate 8, which has multiple rings of diverter holes arranged alternately along the circumference. The axis of the diverter holes forms a downward angle with the plane of the diverter plate 8, which further optimizes the distribution of the fluid before it enters the spray orifice plate 9. Finally, the fluid is sprayed out through the spray orifice plate 9, which has multiple layers of spray holes arranged in concentric circles. The spray holes in the central area are vertical, while the spray holes in the outer area are at an inclined angle, which further improves the spray coverage and uniformity.

[0052] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0053] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0054] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A high-efficiency spray head for desulfurization solution, comprising a shell (1), a liquid inlet pipe (2) arranged at the top of the shell (1), and an air inlet pipe (3), characterized in that: The liquid inlet pipe (2) and the gas inlet pipe (3) are communicated with the mixing chamber through the vertically arranged flow guide sleeve (4), the inner wall of the mixing chamber is provided with two groups of rotational flow guide plates (5) in the axial direction, the bottom of the mixing chamber is connected with a downward tapered flow guide cone (6), the conical surface of the flow guide cone (6) is uniformly distributed with a plurality of inclined flow guide vanes in the circumferential direction, the flow guide cone (6) is sleeved with a concentrically arranged flow guide ring (7) outside, the inner wall of the flow guide ring (7) is provided with an annular flow guide groove opposite to the extension direction of the flow guide vane, the flow guide ring (7) is provided with a horizontally arranged flow distribution plate (8) below, the flow distribution plate (8) is provided with a plurality of rows of flow distribution holes arranged alternately in the circumferential direction, the flow distribution plate (8) is connected with a spray hole plate (9) at the bottom, and the spray hole plate (9) is provided with a plurality of layers of spray holes distributed in concentric circles.

2. The high-efficiency spray head for desulfurization solution according to claim 1, characterized in that: The flow guide sleeve (4) comprises an inner sleeve (41) and an outer sleeve (42) nested with each other, the inner sleeve (41) is connected with the liquid inlet pipe (2), the outer sleeve (42) is connected with the gas inlet pipe (3), and an annular gas inlet channel is formed between the two sleeves.

3. The high efficiency spray head for desulfurization solution according to claim 2, characterized in that: The inner sleeve (41) is provided with a conical diffuser (10) at the bottom, and the largest diameter end of the conical diffuser (10) is flush with the inner wall of the mixing chamber.

4. The high efficiency spray head for desulfurization solution of claim 1, wherein: The rotational flow guide plate (5) comprises a first rotational direction guide plate group (51) in the upper layer and a second rotational direction guide plate group (52) in the lower layer opposite in rotational direction.

5. The high efficiency spray head for desulfurization solution of claim 1, wherein: The flow guide vane surface of the flow guide cone (6) is provided with uneven turbulent lines.

6. The high efficiency spray head for desulfurization solution of claim 1, wherein: The cross section of the annular flow guide groove of the flow guide ring (7) is trapezoidal, and the groove depth changes periodically in the circumferential direction.

7. The high efficiency spray head for desulfurization solution of claim 1, wherein: The flow distribution holes of the flow distribution plate (8) comprise a plurality of groups of holes with different diameters, each group of holes is uniformly distributed in the circumferential direction and the hole diameter gradually decreases from inside to outside.

8. The high efficiency spray head for desulfurization solution of claim 1, wherein: The hole axis of the flow distribution hole forms an inclined angle with the plane of the flow distribution plate (8) downward.

9. The high efficiency spray head for desulfurization solution of claim 1, wherein: The plurality of layers of spray holes of the spray hole plate (9) comprise vertical spray holes in the central region and inclined spray holes in the peripheral region.

10. The high efficiency spray head for desulfurization solution of claim 1, wherein: The bottom of the spray hole plate (9) is provided with a fairing (11), and the surface of the fairing (11) is provided with a flow guide groove corresponding to the extension direction of the spray hole.

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