Yellow phosphorus spray gun for combustion tower
By installing a yellow phosphorus atomizer and regulating mechanism in the combustion tower spray gun, the liquid yellow phosphorus and compressed air are fully mixed, solving the problems of insufficient mixing and backfire, and improving combustion efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-14
- Publication Date
- 2026-03-03
AI Technical Summary
The existing yellow phosphorus spray guns in combustion towers cannot be adaptively adjusted according to the amount of air entering the nozzle and the amount of combustion air, resulting in insufficient mixing, which easily leads to low-speed zones and backfire, affecting combustion efficiency and safety.
A yellow phosphorus atomizer, including an inner regulating cylinder and a Venturi atomizing cylinder, is installed in the spray gun. The internal space of the inner regulating cylinder is adjusted by the adjusting mechanism to ensure that the liquid yellow phosphorus and compressed air are fully mixed in the Venturi atomizing cylinder. The air then enters the inner regulating cylinder through the feed inlet for further adjustment, avoiding low-speed zones and backfire.
It improves combustion efficiency, ensures stable combustion of gaseous yellow phosphorus, avoids backfire, and enhances the safety and mixing effect of the combustion tower.
Smart Images
Figure CN223965391U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of phosphorus chemical production technology, specifically relating to a yellow phosphorus spray gun for use in combustion towers. Background Technology
[0002] Phosphorus pentoxide is a commonly used raw material and reagent in the chemical industry, widely applied in various fields. High-quality phosphorus pentoxide can also be used to produce high-purity phosphoric acid of various concentrations, especially polyphosphoric acid. Currently, the industrial preparation of phosphorus pentoxide generally adopts the oxidative combustion method: using yellow phosphorus as raw material, the yellow phosphorus is heated and melted and then added to a combustion tower. Dry air is introduced into the combustion tower to react and burn with the yellow phosphorus, generating phosphorus pentoxide flue gas. The phosphorus pentoxide flue gas is then cooled and settled to produce the finished phosphorus pentoxide product. A yellow phosphorus combustion lance is a device used to supply phosphorus to a yellow phosphorus combustion furnace. It is mainly used to uniformly spray liquid yellow phosphorus into the furnace to improve combustion efficiency and space utilization. The lance design includes an outer tube, an inner tube, and a phosphorus delivery tube. A return pipe is installed between the inner tube and the phosphorus delivery tube. The end of the outer tube is connected to a nozzle seat and a nozzle head. By injecting high-temperature steam and compressed gas, the liquid yellow phosphorus is sprayed out at the nozzle, forming a spiral-shaped dispersion spray to ensure uniform combustion and improve combustion efficiency. Although the above-mentioned lance can atomize liquid yellow phosphorus and promote its combustion, its structure... There are still some shortcomings in its use: First, the internal space of the existing combustion tower is fixed, and it cannot be adaptively adjusted according to the amount of incoming nozzle and combustion air. Too much or too little yellow phosphorus mixed in the air within a certain space will result in insufficient mixing, leading to incomplete phosphorus combustion and reduced combustion efficiency. Second, when the existing spray gun mixes yellow phosphorus and air, a low-speed zone easily appears. This low-speed zone can easily cause backfire, failing to ensure that the atomized yellow phosphorus is uniformly and stably sprayed into the combustion tower for combustion, which will affect the safety of the combustion tower. Therefore, it is objectively necessary to develop a yellow phosphorus spray gun for a combustion tower with a reasonable structural design, better mixing effect, and significantly improved combustion efficiency. Summary of the Invention
[0003] The purpose of this invention is to provide a yellow phosphorus spray gun for a combustion tower with a reasonable structural design, good mixing effect, and significantly improved combustion effect.
[0004] The purpose of this utility model is achieved as follows: It includes a yellow phosphorus feed pipe, a spray gun body, and a nozzle. A yellow phosphorus atomizer is disposed between the spray gun body and the yellow phosphorus feed pipe. The yellow phosphorus atomizer includes an inner regulating cylinder and a Venturi atomizing cylinder. Sealing plates are installed at both ends of the inner regulating cylinder. The Venturi atomizing cylinder is coaxially disposed on the outside of the inner regulating cylinder. Both ends of the Venturi atomizing cylinder are fixedly connected to the outer wall of the inner regulating cylinder via end plates. The yellow phosphorus feed pipe is installed on the end plates and communicates with one end of the Venturi atomizing cylinder. An air inlet pipe is tangentially installed on the yellow phosphorus feed pipe. One end of the inner regulating cylinder is installed on an regulating mechanism. Multiple guide ports communicating with the Venturi atomizing cylinder are evenly distributed circumferentially on the inner regulating cylinder on the side away from the regulating mechanism. One end of the spray gun body is fixedly connected to the inner regulating cylinder, and the other end is movably connected to the nozzle.
[0005] Compared with existing technologies, the advantages of this device are as follows: This invention incorporates a yellow phosphorus atomizer between the yellow phosphorus feed pipe and the spray gun body. Liquid yellow phosphorus and compressed air are mixed once within the Venturi atomizing cylinder before entering the inner regulating cylinder through the feed inlet. The regulating mechanism within the inner regulating cylinder adjusts its internal space, thereby adaptively regulating the amount of mixed liquid yellow phosphorus and compressed air entering the cylinder. This ensures more thorough mixing of the liquid yellow phosphorus and compressed air, improving combustion efficiency. The yellow phosphorus flow rate and velocity after initial mixing by the atomizer are stable, preventing low-speed zones upon entering the spray gun body. This ensures stable combustion of the uniformly mixed gaseous yellow phosphorus from the nozzle, completely avoiding backfire. This structural arrangement not only ensures the safety of the combustion tower but also improves the efficiency of yellow phosphorus combustion, resulting in more complete combustion. It boasts a reasonable structural design, significant performance effects, and is easy to promote and use. Attached Figure Description
[0006] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0007] Figure 2 This is an enlarged schematic diagram of part A in this utility model;
[0008] In the diagram: 1-Yellow phosphorus feed pipe, 2-Spray gun body, 21-Central tube, 22-Outer shell, 23-First fixed ring plate, 24-Second fixed ring plate, 25-Secondary atomizing tube, 26-Atomizing through hole, 27-Bypass pipe, 28-Make-up air jacket, 29-Make-up air pipe, 210-Secondary air inlet pipe, 3-Nozzle, 4-Yellow phosphorus atomizer, 41-Inner regulating cylinder, 42-Venturi atomizing cylinder, 43-Feed guide port, 44-Regulating plate, 45-Regulating cylinder, 46-Push rod, 47-Modible circular plate, 48-Guide block, 49-Guide column, 410-Base, 411-Guide rod, 412-Spring, 413-Slider, 414-Distribution plate, 415-Insulation jacket, 416-Steam coil, 417-Insulation cotton, 5-Air inlet pipe. Detailed Implementation
[0009] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the teachings of the present invention shall fall within the protection scope of the present invention.
[0010] like Figures 1-2 As shown, this utility model includes a yellow phosphorus feed pipe 1, a spray gun body 2, and a nozzle 3. The nozzle 3 uses the structure used in the prior art. A yellow phosphorus atomizer 4 is arranged between the spray gun body 2 and the yellow phosphorus feed pipe 1. The yellow phosphorus atomizer 4 includes an inner regulating cylinder 41 and a Venturi atomizing cylinder 42. The Venturi atomizing cylinder 42 adopts the structure of an existing Venturi tube, including a constriction section, a throat section, and / or an expansion section. Sealing plates are installed at both ends of the inner regulating cylinder 41. The Venturi atomizing cylinder 42 is coaxially arranged on the outside of the inner regulating cylinder 41. Both ends of the Venturi atomizing cylinder 42 are fixedly connected to the outer wall of the inner regulating cylinder 41 via end plates. The yellow phosphorus feed pipe 1 is installed on the end plate and communicates with one end of the Venturi atomizing cylinder 42. An air inlet pipe 5 is tangentially installed on the yellow phosphorus feed pipe 1. One end of the inner regulating cylinder 41 is installed in the regulating mechanism. Multiple guide ports 43 communicating with the Venturi atomizing cylinder 42 are evenly distributed circumferentially on the inner regulating cylinder 41 on the side away from the regulating mechanism. One end of the spray gun body 2 is fixedly connected to the inner regulating cylinder 41, and the other end is movably connected to the nozzle 3.
[0011] The process of using this device is as follows: Liquid yellow phosphorus is uniformly transported into the Venturi atomizing cylinder 42 through the yellow phosphorus feed pipe 1. During the transport of yellow phosphorus in the yellow phosphorus feed pipe 1, compressed air is supplied into the yellow phosphorus feed pipe 1 through the air inlet pipe 5. The compressed air pushes the yellow phosphorus into the Venturi atomizing cylinder 42, where it is mixed to form yellow phosphorus aerosol. The formed yellow phosphorus aerosol enters the inner regulating cylinder 41 through the feed port 43. The inner regulating cylinder 41 is equipped with an regulating mechanism that can adjust the size of the internal space of the inner regulating cylinder 41 according to the flow rate of the yellow phosphorus aerosol entering the inner regulating cylinder 41. This ensures that the flow rate of the yellow phosphorus aerosol entering the inner regulating cylinder 41 matches the size of the internal space, resulting in better mixing of the yellow phosphorus aerosol and stabilizing the flow rate and velocity of the yellow phosphorus aerosol entering the spray gun body 4. Consequently, the flow rate and velocity of the yellow phosphorus aerosol sprayed from the nozzle are stable, thus ensuring that the yellow phosphorus aerosol is fully and stably combusted in the combustion tower. This invention incorporates a yellow phosphorus atomizer 4 between the yellow phosphorus feed pipe 1 and the spray gun body 2. Liquid yellow phosphorus and compressed air are mixed once within a Venturi atomizing cylinder 42, and then enter the inner regulating cylinder 41 through the feed inlet 43. An adjustment mechanism within the inner regulating cylinder 41 can adjust the internal space, thereby adaptively regulating the amount of mixed liquid yellow phosphorus and compressed air entering the inner regulating cylinder 41. This ensures more thorough mixing of the liquid yellow phosphorus and compressed air within the inner regulating cylinder 41, improving combustion efficiency. The yellow phosphorus flow rate and velocity after being mixed once by the yellow phosphorus atomizer 4 are stable, preventing low-speed zones when it enters the spray gun body 2. This ensures that the uniformly mixed gaseous yellow phosphorus is stably sprayed from the nozzle for combustion, completely avoiding backfire. This structural arrangement not only ensures the safety of the combustion tower but also improves the efficiency of yellow phosphorus combustion.
[0012] Furthermore, the adjustment mechanism includes an adjustment plate 44 and an adjustment cylinder 45. The adjustment cylinder 45 is a pneumatic cylinder structure used in the prior art, and finished products are directly purchased according to the stroke and pressure required. The adjustment plate 44 is slidably installed inside the inner adjustment cylinder 41. At least three push rods 46 are evenly distributed on the sealing plate. A movable circular plate 47 is installed at the end of the push rod 46 located outside the inner adjustment cylinder 41. The fixed end of the adjustment cylinder 45 is installed on the sealing plate through a bracket, and the movable end of the adjustment cylinder 45 is fixedly connected to the movable circular plate 47. A guide block 48 is installed at the end of the push rod 46 located inside the inner adjustment cylinder 41. A guide post 49 is installed on one side of the adjusting plate 44. The guide post 49 is fixedly connected to the guide block 48 through a connecting rod. When in use, the adjusting cylinder 45 is turned on. The moving end of the adjusting cylinder 45 extends or shortens, which can drive the movable circular plate 47, the push rod 46, the guide block 48 and the guide post 49 to move back and forth. In turn, the adjusting plate 44 can move back and forth in the inner adjusting cylinder 41 to adjust the size of the internal space of the inner adjusting cylinder 41. Preferably, in order to ensure that the adjusting plate 44 always moves in a straight line, a guide groove is processed on the inner wall of the inner adjusting cylinder 41, and the adjusting plate 44 is slidably installed in the groove.
[0013] Preferably, in order to improve the stability of the movement of the regulating plate and avoid damage to the sealing plate, a buffer assembly is installed between the guide post 49 and the sealing plate. The buffer assembly includes a base 410, a guide rod 411, and a spring 412. The base 410 is installed on the sealing plate, and the spring 412 is installed inside the base 410. One end of the guide rod 411 is connected to the guide post 49, and the other end of the guide rod 411 is located inside the base 410. A slider 413 is installed on the guide rod 411 located inside the base 410. The slider 413 is fixedly connected to the spring 412. The spring 412 has a buffering function, which can buffer the impact force generated by the yellow phosphorus mist on the regulating plate 44 and reduce the impact of the impact force inside the inner regulating cylinder 41 on the internal components.
[0014] To improve the mixing effect of liquid yellow phosphorus and compressed air in the Venturi atomizing cylinder 42, a distribution plate 414 is installed between the inner regulating cylinder 41 and the Venturi atomizing cylinder 42 on the side near the yellow phosphorus feed pipe 1. The distribution plate 414 has multiple distribution holes evenly distributed on it. After being distributed by the distribution plate 414, the liquid yellow phosphorus and compressed air enter the Venturi atomizing cylinder 42 through the distribution holes for thorough mixing.
[0015] Furthermore, to ensure the temperature of the yellow phosphorus and prevent it from changing from a liquid to a solid state, a heat-insulating jacket 415 is provided at intervals on the outer side of the Venturi atomizing cylinder 42. A steam coil 416 is arranged around the outer side of the Venturi atomizing cylinder 42. The space of the heat-insulating jacket 415 is filled with heat-insulating cotton 417. High-temperature steam is introduced into the steam coil. The heat-insulating steam can heat the Venturi atomizing cylinder 42, and the heat-insulating cotton 417 can keep the Venturi atomizing cylinder 42 warm and prevent heat loss. The heat-insulating cotton 417 can be regarded as a heat-insulating material with good heat-insulating effect in the prior art.
[0016] Furthermore, the spray gun body 2 includes a central tube 21 and an outer shell 22. The outer shell 22 is fixedly connected to the inner regulating cylinder 41. One end of the central tube 21 is connected to one end of the inner regulating cylinder 41, and the other end extends into the interior of the outer shell 22. A blocking plate is installed at the other end of the central tube 21. A first fixing ring plate 23 and a second fixing ring plate 24 are fixedly installed between the outer shell 22 and the central tube 21 near the nozzle 3. Multiple secondary atomizing tubes 25 are evenly distributed and installed between the first fixing ring plate 23 and the second fixing ring plate 24. Multiple atomizing through holes 26 corresponding to the secondary atomizing tubes 25 are evenly distributed on the central tube 21 near the first fixing ring plate 23. In use, the yellow phosphorus aerosol in the inner regulating cylinder 41 enters the central tube 21, is sprayed out through the atomizing through holes 26, and then enters the secondary atomizing tubes 25 for secondary mixing, which can further improve the mixing effect of yellow phosphorus. Preferably, the... The secondary atomizing tube 25 comprises a first straight section, a contraction section, a throat section, an expansion section, and a second straight section, all manufactured as a single piece. The first straight section is mounted on the first fixed ring plate 23, and the second straight section is mounted on the second fixed ring plate 24. Multiple bypass pipes 27, connected to the throat end, are evenly distributed on the central tube 21. An air supply jacket 28 is provided on the outer side of the outer shell 22, and an air supply pipe 29 is provided on the air supply jacket 28. A secondary air inlet pipe 210, connected to the air supply jacket 28, is provided on the throat section. Yellow phosphorus aerosol enters the secondary atomizing tube 25 and is supplied with dried air through the air supply pipe 29 to the air supply jacket 28. After entering the air supply jacket 28, the air then enters the throat section through the secondary air inlet pipe 210, where it undergoes a second thorough mixing with the yellow phosphorus aerosol before being sprayed out through the nozzle 3. This improves the mixing effect of the aerosolized yellow phosphorus with the air, thus enhancing the combustion efficiency of the yellow phosphorus.
Claims
1. A yellow phosphorus spray gun for a combustion tower, characterized in that: The device includes a yellow phosphorus feed pipe (1), a spray gun body (2), and a nozzle (3), characterized in that: a yellow phosphorus atomizer (4) is provided between the spray gun body (2) and the yellow phosphorus feed pipe (1), the yellow phosphorus atomizer (4) includes an inner regulating cylinder (41) and a Venturi atomizing cylinder (42), both ends of the inner regulating cylinder (41) are fitted with sealing plates, the Venturi atomizing cylinder (42) is coaxially arranged on the outside of the inner regulating cylinder (41), and both ends of the Venturi atomizing cylinder (42) are connected to the outer wall of the inner regulating cylinder (41) through end plates. The yellow phosphorus feed pipe (1) is fixedly connected to the end plate and connected to one end of the Venturi atomizing cylinder (42). An air inlet pipe (5) is tangentially installed on the yellow phosphorus feed pipe (1). One end of the inner regulating cylinder (41) is installed in the regulating mechanism. Multiple guide ports (43) connected to the Venturi atomizing cylinder (42) are evenly distributed around the inner regulating cylinder (41) on the side away from the regulating mechanism. One end of the spray gun body (2) is fixedly connected to the inner regulating cylinder (41), and the other end is movably connected to the nozzle (3).
2. The yellow phosphorus spray gun for a combustion tower according to claim 1, characterized in that: The adjustment mechanism includes an adjustment plate (44) and an adjustment cylinder (45). The adjustment plate (44) is slidably installed inside the inner adjustment cylinder (41). At least three push rods (46) are evenly distributed on the sealing plate. A movable circular plate (47) is installed at the end of the push rod (46) located outside the inner adjustment cylinder (41). The fixed end of the adjustment cylinder (45) is installed on the sealing plate through a bracket. The movable end of the adjustment cylinder (45) is fixedly connected to the movable circular plate (47). A guide block (48) is installed at the end of the push rod (46) located inside the inner adjustment cylinder (41). A guide column (49) is installed on one side of the adjustment plate (44). The guide column (49) is fixedly connected to the guide block (48) through a connecting rod.
3. The yellow phosphorus spray gun for a combustion tower according to claim 2, characterized in that: The inner wall of the inner adjusting cylinder (41) is machined with a guide groove, and the adjusting plate (44) is slidably installed in the groove.
4. A yellow phosphorus spray gun for a combustion tower according to claim 2, characterized in that: A buffer assembly is installed between the guide post (49) and the sealing plate. The buffer assembly includes a base (410), a guide rod (411), and a spring (412). The base (410) is installed on the sealing plate, and the spring (412) is installed inside the base (410). One end of the guide rod (411) is connected to the guide post (49), and the other end of the guide rod (411) is located inside the base (410). A slider (413) is installed on the guide rod (411) located inside the base (410), and the slider (413) is fixedly connected to the spring (412).
5. A yellow phosphorus spray gun for a combustion tower according to claim 1, characterized in that: A distribution plate (414) is installed between the inner regulating cylinder (41) and the Venturi atomizing cylinder (42) on the side near the yellow phosphorus feed pipe (1). The distribution plate (414) has multiple distribution holes evenly distributed on it.
6. A yellow phosphorus spray gun for a combustion tower according to claim 1, characterized in that: The Venturi atomizing cylinder (42) is provided with a heat-insulating jacket (415) at intervals on the outside, and a steam coil (416) is provided around the outside of the Venturi atomizing cylinder (42). The space of the heat-insulating jacket (415) is filled with heat-insulating cotton (417).
7. A yellow phosphorus spray gun for a combustion tower according to claim 1, characterized in that: The spray gun body (2) includes a central tube (21) and an outer shell (22). The outer shell (22) is fixedly connected to the inner adjusting cylinder (41). One end of the central tube (21) is connected to one end of the inner adjusting cylinder (41), and the other end extends into the interior of the outer shell (22). A blocking plate is installed at the other end of the central tube (21). A first fixing ring plate (23) and a second fixing ring plate (24) are fixedly installed between the outer shell (22) near the nozzle (3) and the central tube (21). A plurality of secondary atomizing tubes (25) are evenly distributed and installed between the first fixing ring plate (23) and the second fixing ring plate (24). A plurality of atomizing through holes (26) corresponding to the secondary atomizing tubes (25) are evenly distributed on the central tube (21) near the first fixing ring plate (23).
8. A yellow phosphorus spray gun for a combustion tower according to claim 7, characterized in that: The secondary atomizing tube (25) includes a first straight tube section, a contraction section, a throat section, an expansion section, and a second straight tube section, all manufactured as a single piece. The first straight tube section is installed on the first fixed ring plate (23), and the second straight tube section is installed on the second fixed ring plate (24). Multiple bypass tubes (27) connected to the throat end are evenly distributed on the central tube (21). An air supply jacket (28) is provided on the outer side of the outer shell (22). An air supply pipe (29) is provided on the air supply jacket (28), and a secondary air inlet pipe (210) connected to the air supply jacket (28) is provided on the throat section.