Spray head and spray assembly for glass kiln denitration system
By designing the fluid channel structure and suction channel of the nozzle in the glass kiln denitrification system, the problems of low ammonia water utilization and high ammonia escape are solved, and efficient ammonia water utilization and denitrification effects are achieved.
Patent Information
- Application Number
- CN202422126639.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The utilization rate of ammonia water in the existing glass kiln denitrification system is low and the ammonia escape is too high, resulting in waste of resources and secondary pollution.
A nozzle for glass kiln denitrification system is designed, and a Venturi structure with the diameter of the fluid channel first reduced and then increased to form a Venturi effect, improve the atomization effect of ammonia, and enhance the contact area of nitrogen oxides through the inhalation channel to promote the denitrification reaction.
It improves the utilization rate of ammonia water, reduces ammonia escape, enhances the denitrification effect, and ensures the effective utilization of ammonia water.
Smart Images
Figure CN223069709U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of denitration for glass furnaces, and particularly relates to a nozzle and a spraying assembly for a denitration system of a glass furnace. Background Art
[0002] In related technologies, ammonia slip refers to the escape of ammonia (NH3) that does not participate in chemical reactions into the environment during the denitration (NOx removal) process. This not only wastes resources but also may cause secondary pollution. In the existing technologies, the denitration system of glass furnaces uses a large amount of ammonia water and has a low utilization rate of ammonia water, resulting in excessive ammonia slip in the denitration system of glass furnaces. Content of the Utility Model
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a nozzle for a denitration system of a glass furnace. The nozzle for a denitration system of a glass furnace designed according to the utility model improves the atomization effect of the ammonia water sprayed from the nozzle, thereby increasing the contact area between the ammonia water and nitrogen oxides, promoting the denitration reaction, improving the denitration effect, ensuring the effective utilization of ammonia water, and thus achieving minimized ammonia slip.
[0004] The utility model also provides a spraying assembly having the above nozzle.
[0005] To achieve the above object, the utility model provides the following technical solutions:
[0006] The utility model provides a nozzle for a denitration system of a glass furnace, including: a nozzle body, a fluid passage is arranged in the nozzle body, an outlet is arranged at one end of the nozzle body and is communicated with the fluid passage, an inlet and an air inlet are arranged at the other end of the nozzle body, and the inlet and the air inlet are respectively communicated with the fluid passage; wherein the diameter of the fluid passage first decreases and then increases in the direction towards the outlet.
[0007] According to the nozzle for a denitration system of a glass furnace of the utility model, by making the diameter of the fluid passage in the nozzle body first decrease and then increase in the direction towards the outlet, the fluid passage can form a structure similar to a Venturi structure and generate a corresponding Venturi effect, thereby improving the atomization effect of the ammonia water sprayed from the nozzle, increasing the contact area between the ammonia water and nitrogen oxides, promoting the denitration reaction, improving the denitration effect, ensuring the effective utilization of ammonia water, and thus achieving minimized ammonia slip.
[0008] Further, the fluid channel includes: a first channel section, a second channel section, and a third channel section, which are axially connected in sequence; wherein the diameter of the first channel section gradually decreases in the direction towards the second channel section, and the diameter of the third channel section gradually increases in the direction away from the second channel section.
[0009] Further, an air suction channel is provided inside the spray head body. One end of the air suction channel is connected to the second channel section, and the other end of the air suction channel is connected to the air inlet and the external environment.
[0010] Further, the fluid channel further includes: a fourth channel section, which is adapted to connect the third channel section to the liquid outlet, and the diameter of the fourth channel section gradually increases in the direction towards the liquid outlet.
[0011] The spray assembly according to the present invention will be briefly described below.
[0012] The spray assembly according to the present invention includes: a mounting bracket; a spray head, which is configured as the spray head for the glass furnace denitration system described in any one of the above embodiments, and a plurality of the spray heads are circumferentially spaced along the mounting bracket, and the plurality of spray heads are respectively rotatably connected to the mounting bracket. Since the spray assembly according to the present invention is provided with the spray head for the glass furnace denitration system of the above embodiment, the atomization effect of the ammonia water sprayed by the spray assembly is better, the efficiency of the denitration reaction is improved, the effective utilization of the ammonia water is ensured, and the minimum ammonia escape is achieved.
[0013] Further, a first rotating part is provided at one end of the spray head away from the liquid outlet, a second rotating part is provided on the mounting bracket, and the first rotating part is rotatably matched with the second rotating part.
[0014] Further, it further includes: an adjusting bracket, which is movably connected to the mounting bracket; adjusting rods, which are configured as a plurality corresponding to the spray heads one by one, one end of each adjusting rod is rotatably connected to the mounting bracket, and the other end of each adjusting rod is rotatably connected to the spray head.
[0015] Further, it further includes: a driving member, which is connected to the mounting bracket, the driving member has a driving end that moves towards or away from itself in the height direction, and the driving end is connected to the adjusting bracket.
[0016] Other advantages, objects, and features of the present utility model will be described in the following specification, and to some extent will be obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present utility model. The objects and other advantages of the present utility model can be achieved and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to make the objects, technical solutions, and beneficial effects of the present utility model clearer, the present utility model provides the following drawings for illustration:
[0018] Figure 1 It is a cross-sectional view of the spray head of the present utility model;
[0019] Figure 2 It is a cross-sectional view of the spraying assembly of the present utility model;
[0020] Figure 3 is Figure 2 an enlarged view of the circled A in
[0021] The reference numerals in the drawings are as follows:
[0022] 1000, spraying assembly; 1, spray head; 2, mounting bracket; 3, adjusting bracket; 4, adjusting rod;
[0023] 10, spray head body; 11, fluid passage; 111, first passage section; 112, second passage section; 113, third passage section; 114, fourth passage section; 12, liquid outlet; 13, liquid inlet; 14, air inlet; 15, suction passage; 16, first rotating part. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] In order to make the objects, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in combination with the embodiments and the drawings. The illustrative embodiments and descriptions thereof of the present utility model are only used to explain the present utility model and do not limit the present utility model.
[0025] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present utility model. However, it is obvious to those of ordinary skill in the art that: it is not necessary to adopt these specific details to implement the present utility model. In other instances, well-known structures, circuits, materials, or methods are not specifically described in order to avoid obscuring the present utility model.
[0026] Throughout the specification, references to "an embodiment", "embodiments", "an example", or "examples" mean that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment of the present utility model. Thus, the phrases "an embodiment", "embodiments", "an example", or "examples" that appear throughout the specification do not necessarily all refer to the same embodiment or example. In addition, the particular features, structures, or characteristics may be combined in any suitable combination and / or sub-combination in one or more embodiments or examples. In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present utility model.
[0028] Embodiment 1:
[0029] As Figures 1 - 3 shown, the present utility model provides a nozzle 1 for a denitration system of a glass furnace, comprising: a nozzle body 1, a fluid passage 11 is arranged in the nozzle body 1, an outlet 12 communicating with the fluid passage 11 is arranged at one end of the nozzle body 1, an inlet 13 and an air inlet 14 are arranged at the other end of the nozzle body 1, and the inlet 13 and the air inlet 14 are respectively communicated with the fluid passage 11; wherein the diameter of the fluid passage 11 first decreases and then increases in the direction towards the outlet 12.
[0030] In some embodiments, a fluid passage 11 is arranged in the nozzle body 1, the fluid passage 11 extends axially, and in the extending direction of the fluid passage 11, the diameter of the fluid passage 11 first decreases and then increases. An outlet 12 is arranged at one end of the nozzle body 1 in the axial direction, the outlet 12 is communicated with the fluid passage 11, an inlet 13 and an air inlet 14 are arranged at the other end of the nozzle body 1 in the axial direction, and both the inlet 13 and the air inlet 14 are communicated with the fluid passage 11.
[0031] It can be understood that the fluid channel 11 set as above is configured with a so-called "Converging-Diverging" design, which is conducive to forming the Venturi effect, that is, a high-speed flow is generated at the narrowest part of the fluid channel 11, thereby sucking in additional gas (air or flue gas), enhancing the atomization effect, improving the contact efficiency between the reducing agent (such as ammonia water) and nitrogen oxides (NOx) in the flue gas, and further enhancing the overall performance of the denitration system.
[0032] The principle is as follows: Converging Section: When the fluid (such as ammonia water) enters the nozzle 1 from the liquid inlet 13 with a larger diameter, it will pass through a gradually narrowing converging section. In the converging section, due to the reduction of the flow channel cross-section, the velocity of the fluid will increase significantly because the fluid must adapt to the smaller channel cross-section and follow the continuity equation (the principle of mass conservation). The high-speed flow will cause the pressure of the fluid to decrease, which is the result of the increase in kinetic energy according to Bernoulli's equation.
[0033] Diverging Section: After the fluid passes through the converging section, it enters a gradually expanding diverging section. In the diverging section, the fluid velocity begins to slow down, and the pressure gradually recovers. However, during this process, the energy of the fluid has been transformed into fine droplets, achieving efficient atomization. The design of the diverging section also helps to control the spray angle and the distribution of the atomized droplets, ensuring that the ammonia water is evenly distributed in the flue gas, thereby improving the denitration efficiency.
[0034] Thus, through the above settings, the atomization degree of the fluid can be effectively improved, the reducing agent is more evenly dispersed in the flue gas, increasing the contact area with nitrogen oxides, promoting the denitration reaction; at the same time, when the fluid passes through the converging section, due to the increase in velocity, a suction effect will be generated near the nozzle 1, which helps to introduce and mix the surrounding flue gas, further improving the efficiency of the denitration reaction; of course, the design of the diverging section can adjust the size and spray angle of the atomized droplets, ensuring the effective utilization of ammonia water and minimizing ammonia escape.
[0035] According to the nozzle 1 for the glass furnace denitration system of the present invention, by making the diameter of the fluid channel 11 in the nozzle body 1 first decrease and then increase in the direction towards the liquid outlet 12, the fluid channel 11 can form a structure similar to the Venturi structure and generate the corresponding Venturi effect, thereby improving the atomization effect of the ammonia water sprayed from the nozzle 1, increasing the contact area between the ammonia water and nitrogen oxides, promoting the denitration reaction, improving the denitration effect, ensuring the effective utilization of ammonia water, and thus achieving the minimization of ammonia escape.
[0036] Example Two:
[0037] Based on Embodiment 1, in this embodiment, the fluid channel 11 includes: a first channel section 111, a second channel section 112, and a third channel section 113. The first channel section 111, the second channel section 112, and the third channel section 113 are connected in sequence axially. Among them, the diameter of the first channel section 111 gradually decreases in the direction towards the second channel section 112, and the diameter of the third channel section 113 gradually increases in the direction away from the second channel section 112.
[0038] It can be understood that the diameter of the first channel section 111 gradually decreases in the direction towards the second channel section 112, that is, the first channel section 111 is a contraction section. When the fluid (such as ammonia water) passes through the first channel section 111, since the cross-sectional area of the first channel section 111 gradually decreases, thus, the fluid velocity will gradually increase while the pressure decreases. The first channel section 111 helps to increase the kinetic energy of the fluid and provides necessary conditions for the subsequent atomization process.
[0039] The second channel section 112 is the narrowest part of the channel. When the fluid passes through here, the velocity reaches the maximum and the pressure drops to the lowest point. The energy of the fluid in the second channel section 112 is converted into the maximum kinetic energy, providing a basis for high-speed flow in the subsequent expansion section.
[0040] The diameter of the third channel section 113 gradually increases in the direction away from the second channel section 112, that is, the third channel section 113 is an expansion section. When the fluid passes through the third channel section 113, the velocity begins to slow down and the pressure gradually recovers. However, due to the previous high-speed flow, the energy of the fluid has been converted into small droplets required for atomization. The design of the third channel section 113 is crucial for controlling the size and distribution of the atomized droplets, ensuring that the sprayed ammonia water can be evenly dispersed in the flue gas and improving the denitrification efficiency.
[0041] Thus, through the "contraction-expansion" design of the first channel section 111 and the third channel section 113, the nozzle 1 can generate a highly atomized fluid jet, increasing the contact area between the ammonia water and nitrogen oxides in the flue gas, thereby improving the efficiency of the denitrification reaction.
[0042] Embodiment 3:
[0043] Based on Embodiment 2, in this embodiment, an air suction channel 15 is provided inside the nozzle body 1. One end of the air suction channel 15 is connected to the second channel section 112, and the other end of the air suction channel 15 is connected to the air inlet 14 and the external environment.
[0044] In some embodiments, the air suction channel 15 includes a first branch channel, a second branch channel, and a third branch channel. One ends of the first branch channel, the second branch channel, and the third branch channel are connected to each other. The other end of the first branch channel is connected to the second channel section 112, the other end of the second branch channel is connected to the external environment, and the other end of the third branch channel is connected to the air inlet 14.
[0045] It can be understood that when a fluid (such as ammonia water) passes through the second channel section 112, due to the sharp increase in the fluid velocity, a low-pressure area will be formed in the second channel section 112, which can prompt air or flue gas in the surrounding environment to be inhaled through the suction channel 15.
[0046] The inhaled air or flue gas is mixed with the high-speed flowing fluid, increasing the turbulence degree of the fluid, which helps to further break the fluid into finer droplets, thus greatly improving the atomization effect. It is worth noting that finer atomized droplets mean a larger surface area, enabling the fluid to come into more sufficient contact with nitrogen oxides in the flue gas, thereby improving the efficiency of the denitration reaction.
[0047] Of course, the air or flue gas introduced through the suction channel 15 is fully mixed with the atomized fluid, which helps to evenly distribute the reducing agent in the flue gas flow, ensuring that the denitration reaction occurs in a wider area, reducing the possibility of local over-injection, and further reducing the risk of ammonia escape.
[0048] It is worth noting that the suction channel 15 is also connected to the air inlet 14, and the gas at the air inlet 14 can enter the second channel section 112 through the suction channel 15, making the amount of gas entering the second channel section 112 larger, thereby making the atomization effect of the fluid better and further improving the efficiency of the denitration reaction.
[0049] According to some embodiments of the present invention, the fluid channel 11 further includes: a fourth channel section 114, which is adapted to connect the third channel section 113 with the liquid outlet 12, and the diameter of the fourth channel section 114 gradually increases in the direction towards the liquid outlet 12.
[0050] It can be understood that the fourth channel section 114 is located between the third channel section 113 and the liquid outlet 12. The fourth channel section 114 can smoothly guide the fluid atomized by the third channel section 113 to the liquid outlet 12 of the nozzle 1, ensuring the integrity of the atomized droplets is not damaged. The diameter of the fourth channel section 114 gradually increases in the direction towards the liquid outlet 12. The fourth channel section 114 helps to slow down the fluid velocity and can maintain the stability of the droplets, avoiding the re-aggregation or deformation of the droplets at the liquid outlet 12, ensuring that the ejected atomized droplets are evenly distributed and have appropriate particle sizes. Of course, the gradually expanding fourth channel section 114 can increase the spraying angle of the nozzle 1, so that the atomized droplets can cover a larger area, improving the efficiency of the denitration reaction.
[0051] Embodiment Four:
[0052] Based on any of the above embodiments, this embodiment provides a spraying assembly 1000, which includes: a mounting bracket 2; a nozzle 1, the nozzle 1 is configured as the nozzle 1 for the denitration system of the glass furnace in any of the above embodiments, and the nozzle 1 is configured as a plurality of nozzles circumferentially spaced along the mounting bracket 2, and the plurality of nozzles 1 are respectively rotatably connected to the mounting bracket 2. Since the spraying assembly 1000 according to the present invention is provided with the nozzle 1 for the denitration system of the glass furnace in the above embodiment, the atomization effect of the ammonia water sprayed by the spraying assembly 1000 is better, the efficiency of the denitration reaction is improved, the effective utilization of ammonia water is ensured, and the minimum ammonia escape is achieved.
[0053] It should be noted that each nozzle 1 is rotatably connected to the mounting bracket 2. Thus, each nozzle 1 can rotate within a certain range, thereby adjusting the spraying angle of the nozzle 1, improving the flexibility of the nozzle 1, and enabling the nozzle 1 to adjust the spraying direction of the ammonia water dynamically according to the actual direction and speed of the flue gas flow or according to the requirements of the denitration system, so as to achieve the best atomization and mixing effects.
[0054] Embodiment Five:
[0055] Based on Embodiment Four, in this embodiment, a first rotating part 16 is provided at one end of the nozzle 1 away from the liquid outlet 12, and a second rotating part is provided on the mounting bracket 2, and the first rotating part 16 is rotatably engaged with the second rotating part.
[0056] In some embodiments, one of the first rotating part 16 and the second rotating part is configured as a rotating hole, and the other of the first rotating part 16 and the second rotating part is configured as a rotating rod, and the rotating rod is rotatably received in the rotating hole to realize the rotation of the nozzle 1 relative to the mounting bracket 2.
[0057] According to some embodiments of the present invention, the spraying assembly 1000 further includes: an adjusting bracket 3 and adjusting rods 4, the adjusting bracket 3 is movably connected to the mounting bracket 2, the adjusting rods 4 are configured as a plurality corresponding to the nozzles 1 one by one, one end of the adjusting rod 4 is rotatably connected to the mounting bracket 2, and the other end of the adjusting rod 4 is rotatably connected to the nozzle 1.
[0058] It can be understood that the adjusting bracket 3 can move relative to the mounting bracket 2 in the height direction, the adjusting bracket 3 is rotatably connected with a plurality of adjusting rods 4, and the free ends of the plurality of adjusting rods 4 are respectively rotatably connected to the corresponding nozzles 1. Thus, when the adjusting bracket 3 moves relative to the mounting bracket 2 in the height direction, the plurality of adjusting rods 4 respectively move in the height direction following the adjusting bracket 3, and the plurality of adjusting rods 4 respectively drive the corresponding nozzles 1 to rotate relative to the mounting bracket 2, so as to realize the adjustment of the spraying angles of the plurality of nozzles 1.
[0059] According to some embodiments of the present utility model, the spraying assembly 1000 further includes: a driving member, the driving member is connected to the mounting bracket 2, the driving member has a driving end that moves toward or away from itself in the height direction, and the driving end is connected to the adjusting bracket 3.
[0060] In some embodiments, the driving member can be configured as a linear motor, a cylinder or a hydraulic cylinder, etc., as long as the driving end can move toward or away from the driving member, and there is no limitation here.
[0061] It can be understood that the addition of the driving member realizes the automation of the angle adjustment of the nozzle 1 of the spraying assembly 1000, reduces the dependence on manual operation, and improves the response speed and control accuracy of the system; at the same time, through the driving member, the operator can adjust the angle of the nozzle 1 from the control room or a remote location without directly contacting the high-temperature or harmful industrial environment, improving work safety and operation convenience.
[0062] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present utility model and are not restrictive. Although the present utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present utility model.
Claims
1. A spray head for a denitration system of a glass furnace, characterized in that, Comprising: A nozzle body (10), a fluid passage (11) is provided inside the nozzle body (10), a liquid outlet (12) communicating with the fluid passage (11) is provided at one end of the nozzle body (10), a liquid inlet (13) and a gas inlet (14) are provided at the other end of the nozzle body (10), and the liquid inlet (13) and the gas inlet (14) are respectively communicated with the fluid passage (11); wherein The diameter of the fluid passage (11) first decreases and then increases in the direction towards the liquid outlet (12).
2. The nozzle for the denitration system of a glass furnace according to claim 1, wherein The fluid passage (11) comprises: a first passage section (111), a second passage section (112) and a third passage section (113), and the first passage section (111), the second passage section (112) and the third passage section (113) are axially communicated in sequence; wherein The diameter of the first passage section (111) gradually decreases in the direction towards the second passage section (112), and the diameter of the third passage section (113) gradually increases in the direction away from the second passage section (112).
3. The nozzle for the denitration system of a glass furnace according to claim 2, wherein, An air suction passage (15) is provided inside the nozzle body (10), one end of the air suction passage (15) is communicated with the second passage section (112), and the other end of the air suction passage (15) is communicated with the gas inlet (14) and the external environment.
4. The nozzle for the denitration system of a glass furnace according to claim 2, characterized in that, The fluid passage (11) further comprises: A fourth passage section (114), the fourth passage section (114) is adapted to communicate the third passage section (113) with the liquid outlet (12), and the diameter of the fourth passage section (114) gradually increases in the direction towards the liquid outlet (12).
5. A spray assembly, characterized in that, Comprising: An installation bracket (2); Nozzles (1), the nozzles (1) are configured as the nozzles (1) for the denitration system of a glass furnace described in any one of claims 1-4, and the nozzles (1) are configured as a plurality of nozzles circumferentially spaced along the installation bracket (2), and the plurality of nozzles (1) are respectively rotatably connected to the installation bracket (2).
6. The spray assembly according to claim 5, characterized in that, A first rotating part (16) is provided at one end of the nozzle (1) away from the liquid outlet (12), a second rotating part is provided on the installation bracket (2), and the first rotating part (16) is rotatably matched with the second rotating part.
7. The spray assembly according to claim 6, characterized in that, Further comprising: An adjusting bracket (3), the adjusting bracket (3) is movably connected to the installation bracket (2); Adjusting rods (4), the adjusting rods (4) are configured as a plurality of adjusting rods corresponding to the nozzles (1) one by one, one end of the adjusting rod (4) is rotatably connected to the installation bracket (2), and the other end of the adjusting rod (4) is rotatably connected to the nozzle (1).
8. The spray assembly according to claim 7, characterized in that, Further comprising: A driving member, the driving member is connected to the installation bracket (2), the driving member has a driving end that moves towards or away from itself in the height direction, and the driving end is connected to the adjusting bracket (3).