Precise preheating device for yellow phosphorus furnace charging material

Abstract

The utility model discloses a kind of yellow phosphorus electric furnace charging material precision preheating device, including heat preservation preheating jar, the right side of the top of heat preservation preheating jar is connected with blanking pipe, the top of blanking pipe is connected with material collecting box, the top of material collecting box right side is equipped with feed inlet, the top and bottom of heat preservation preheating jar are connected with compensation component, the top of the top of compensation component is connected with outlet pipe, the bottom of the bottom of compensation component is connected with inlet pipe, the outside of heat preservation preheating jar is installed with anti-blocking component.The utility model utilizes compensation component to compensate the multidirectional displacement of heat preservation preheating jar due to temperature change;Further through the stress relief of metal bellows telescopic deformation inner wall of heat preservation preheating jar, protect the structural integrity of heat preservation preheating jar;Further compensation component can absorb the vibration of heat preservation preheating jar, avoid the vibration of heat preservation preheating jar drive inlet pipe and outlet pipe appear larger vibration, it can also absorb impact, improve the service life of heat preservation preheating jar.

Description

Technical Field

[0001] This utility model relates to the field of yellow phosphorus electric furnace technology, specifically a precise preheating device for yellow phosphorus electric furnace charge. Background Technology

[0002] The yellow phosphorus electric furnace employs an electrothermal reduction method using phosphate rock, silica, and coke as raw materials (mass ratio approximately 100:10:15). The reduction reaction occurs in a high-temperature electric furnace at 1300–1600℃. Yellow phosphorus escapes from the furnace top as steam and is condensed and recovered as a liquid product. Slag acidity control: The SiO2 / CaO mass ratio must be strictly maintained at 0.75–0.85 to ensure melt flowability and reaction efficiency.

[0003] Existing preheating devices for yellow phosphorus electric furnaces are directly connected to the furnace body and lack corresponding displacement compensation components. When displacement occurs due to temperature changes, misalignment can easily occur between the preheating device and the yellow phosphorus electric furnace, leading to breakage at the connection point. To solve these technical problems, we have designed a precision preheating device for yellow phosphorus electric furnace feed. Utility Model Content

[0004] The purpose of this utility model is to provide a precise preheating device for the charge of a yellow phosphorus electric furnace, which has the advantage of displacement compensation components. This solves the problem that the existing charge preheating devices for yellow phosphorus electric furnaces are directly connected to the furnace body and lack corresponding displacement compensation components. When displacement occurs due to temperature changes, misalignment between the charge preheating device and the yellow phosphorus electric furnace can easily occur, causing the connection between the two to break.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a precise preheating device for yellow phosphorus electric furnace feed, comprising an insulated preheating tank, a feeding pipe connected to the right side of the top of the insulated preheating tank, a collecting box connected to the top of the feeding pipe, a feeding inlet on the top right side of the collecting box, compensation components connected to the top and bottom of the insulated preheating tank, an air outlet pipe connected to the top of the compensation component at the top, and an air inlet pipe connected to the bottom of the compensation component at the bottom, an anti-clogging component installed on the outside of the insulated preheating tank, and several vibration motors installed on the outside of the insulated preheating tank, the compensation components comprising a first connecting plate, two first connecting plates connected to the insulated preheating tank via flanges on their adjacent sides, a corrugated metal pipe connected to the side of the first connecting plate away from the insulated preheating tank, a second connecting plate connected to the side of the corrugated metal pipe away from the first connecting plate, and two second connecting plates connected to the air outlet pipe and air inlet pipe respectively via flanges on their sides away from the corrugated metal pipe, and connecting blocks connected to the outside of both the first and second connecting plates.

[0006] Preferably, a connecting screw is provided through the upper and lower connecting blocks, and a positioning nut is threaded on the outside of the connecting screw and at the top and bottom of the connecting blocks.

[0007] Preferably, the top of both the first connecting plate and the second connecting plate are provided with several connecting screw holes, and the first connecting plate and the second connecting plate are all connected to the air outlet pipe, the air inlet pipe and the flange on the heat preservation preheating tank by bolts.

[0008] Preferably, the anti-blocking component includes several outer rings, which are located at the bottom, middle and top of the outside of the heat preservation preheating tank, respectively. Several positioning sleeves are fixedly fitted on the outside of the outer rings, and the outer rings are connected to each other through connecting pipes.

[0009] Preferably, a positioning rod is connected to the inner side of the positioning sleeve, and the inner side of the positioning rod is connected to the heat preservation and preheating tank.

[0010] Preferably, the inner side of the outer ring is connected to several nozzles, the side of the nozzles away from the outer ring passes through the heat preservation preheating tank, and the right side of the outer ring located in the middle is connected to a steam injection pipe, on which a manual valve is installed.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention, through the combined use of compensation components, possesses the advantages of displacement compensation components. These components can compensate for multi-directional displacement of the insulated preheating tank caused by temperature changes. Furthermore, the expansion and contraction of the metal corrugated pipe alleviates stress on the inner wall of the insulated preheating tank, protecting its structural integrity. Moreover, the compensation components can absorb vibrations from the insulated preheating tank, preventing excessive vibrations in the inlet and outlet pipes. They can also absorb impacts, improving the service life of the insulated preheating tank. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the anti-clogging component of this utility model; Figure 3 This is a schematic diagram of the compensation component structure of this utility model.

[0013] In the diagram: 1. Air outlet pipe; 2. Compensation component; 21. Connecting plate one; 22. Connecting block; 23. Metal bellows; 24. Connecting screw; 25. Positioning nut; 26. Connecting plate two; 3. Feeding pipe; 4. Insulated preheating tank; 5. Vibration motor; 6. Anti-clogging component; 61. Positioning sleeve; 62. Spray pipe; 63. Connecting pipe; 64. Outer ring; 65. Positioning rod; 66. Steam injection pipe; 67. Manual valve; 7. Air inlet pipe; 8. Feed inlet; 9. Collection box. Detailed Implementation

[0014] Please see Figures 1-3A precise preheating device for yellow phosphorus electric furnace feed includes an insulated preheating tank 4. A feeding pipe 3 is connected to the right side of the top of the insulated preheating tank 4. A collecting box 9 is connected to the top of the feeding pipe 3. An inlet 8 is opened on the top right side of the collecting box 9. Compensating components 2 are connected to both the top and bottom of the insulated preheating tank 4. An exhaust pipe 1 is connected to the top of the top compensating component 2, and an inlet pipe 7 is connected to the bottom of the bottom compensating component 2. An anti-clogging component 6 is installed on the outside of the insulated preheating tank 4. Several vibrating motors 5 are installed on the outside of the insulated preheating tank 4. The compensating component 2 includes a connecting... Connecting plate 1 21: The two connecting plates 1 21 are connected to the heat preservation preheating tank 4 via flanges on the side closest to each other. The side of connecting plate 1 21 away from the heat preservation preheating tank 4 is connected to a metal bellows pipe 23. The side of the metal bellows pipe 23 away from connecting plate 1 21 is connected to connecting plate 26. The sides of the two connecting plates 26 away from the metal bellows pipe 23 are connected to the exhaust pipe 1 and the inlet pipe 7 via flanges, respectively. Connecting blocks 22 are connected to the outside of both connecting plate 1 21 and connecting plate 26. The side of the exhaust pipe 1 away from the compensation component 2 is connected to the external flue gas treatment equipment.

[0015] A connecting screw 24 is provided through the upper and lower connecting blocks 22. A positioning nut 25 is threaded on the outside of the connecting screw 24 and at the top and bottom of the connecting block 22. The upper and lower connecting blocks 22 can be connected by the cooperation of the connecting screw 24 and the positioning nut 25. The positioning nut 25 can be used to position the connecting screw 24 to prevent the connecting screw 24 from falling off the connecting block 22.

[0016] Both connecting plate 1 (21) and connecting plate 2 (26) have several connecting screw holes through their tops. Connecting plate 1 (21) and connecting plate 2 (26) are connected to the flanges on the air outlet pipe 1, air inlet pipe 7, and heat preservation preheating tank 4 by bolts. Connecting plate 1 (21) and connecting plate 2 (26), as well as the flanges on the air outlet pipe 1, air inlet pipe 7, and heat preservation preheating tank 4, have several connecting screw holes through their tops.

[0017] The anti-clogging component 6 includes several outer rings 64, which are located at the bottom, middle and top of the outside of the heat preservation preheating tank 4. Several positioning sleeves 61 are fixedly fitted on the outside of the outer rings 64, and the outer rings 64 are connected to each other through connecting pipes 63. The connecting pipes 63 can connect two adjacent outer rings 64, and at the same time facilitate the flow of gas.

[0018] The inner side of the positioning sleeve 61 is connected to the positioning rod 65, and the inner side of the positioning rod 65 is connected to the heat preservation preheating tank 4. Through the cooperation of the positioning sleeve 61 and the positioning rod 65, the outer ring 64 can be positioned, thereby improving the stability of the outer ring 64.

[0019] Several nozzles 62 are connected to the inner side of the outer ring 64. The side of the nozzles 62 away from the outer ring 64 passes through the heat preservation preheating tank 4. A steam injection pipe 66 is connected to the right side of the outer ring 64 in the middle. A manual valve 67 is installed on the steam injection pipe 66. The opening and closing of the steam injection pipe 66 can be controlled by the manual valve 67. The side of the steam injection pipe 66 away from the outer ring 64 is connected to the external high-pressure gas storage tank.

[0020] During operation, hot air from the yellow phosphorus electric furnace enters the preheating tank 4 through the inlet pipe 7. The hot air rises inside the preheating tank 4 and eventually flows out through the outlet pipe 1. External ore enters the collection box 9 through the feed inlet 8 and finally falls into the preheating tank 4 through the discharge pipe 3. The ore falls within the preheating tank 4 and eventually enters the yellow phosphorus electric furnace through the inlet pipe 7. During this process, the rising hot air heats the ore. When blockage occurs in the preheating tank 4, the manual valve 67 is opened, allowing compressed gas from the outside to enter the nozzle 62. Under the action of the connecting pipe 63, the gas is evenly distributed, and finally, high-pressure gas is ejected from the nozzle 62 to impact the blocked ore in the preheating tank 4. Further, during this process, the vibrating motor 5 operates, clearing the blockage in the preheating tank 4. The compensation component 2 can compensate for the multi-directional displacement of the heat preservation preheating tank 4 caused by temperature changes (thermal expansion and contraction); further, the expansion and contraction deformation of the metal corrugated pipe 23 can alleviate the stress on the inner wall of the heat preservation preheating tank 4 and protect the structural integrity of the heat preservation preheating tank 4; furthermore, the compensation component 2 can absorb the vibration of the heat preservation preheating tank 4, avoid the vibration of the heat preservation preheating tank 4 from causing large vibrations in the air inlet pipe 7 and the air outlet pipe 1, and can also absorb impacts, thereby improving the service life of the heat preservation preheating tank 4.

[0021] In summary, this precise preheating device for the charge of the yellow phosphorus electric furnace, through the use of compensation component 2, solves the problem that existing preheating devices for the charge of yellow phosphorus electric furnaces are directly connected to the furnace body and lack corresponding displacement compensation components. When displacement occurs due to temperature changes, misalignment between the preheating device and the yellow phosphorus electric furnace can easily occur, causing breakage at the connection between the two.

Claims

1. A precise preheating device for yellow phosphorus electric furnace charge, comprising a heat-insulating preheating tank (4), characterized in that: The top right side of the heat-insulating preheating tank (4) is connected to a discharge pipe (3), the top of the discharge pipe (3) is connected to a collection box (9), and the top right side of the collection box (9) is provided with a feed inlet (8). The top and bottom of the heat-insulating preheating tank (4) are both connected to compensation components (2). The top of the compensation component (2) at the top is connected to an air outlet pipe (1), and the bottom of the compensation component (2) at the bottom is connected to an air inlet pipe (7). The outside of the heat-insulating preheating tank (4) is equipped with an anti-blocking component (6), and several vibration motors (5) are installed on the outside of the heat-insulating preheating tank (4). The compensation component (2) includes... The first connecting plate (21) is connected to the heat-insulating preheating tank (4) on the side of the two connecting plates (21) that are close to each other. A metal bellows (23) is connected to the side of the connecting plate (21) that is away from the heat-insulating preheating tank (4). A second connecting plate (26) is connected to the side of the metal bellows (23) that is away from the first connecting plate (21). The sides of the two second connecting plates (26) that are away from the metal bellows (23) are connected to the air outlet pipe (1) and the air inlet pipe (7) respectively through flanges. A connecting block (22) is connected to the outside of the first connecting plate (21) and the second connecting plate (26).

2. The precise preheating device for yellow phosphorus electric furnace charge according to claim 1, characterized in that: A connecting screw (24) is provided between the upper and lower connecting blocks (22). A positioning nut (25) is threaded on the outside of the connecting screw (24) and at the top and bottom of the connecting block (22).

3. The precise preheating device for yellow phosphorus electric furnace charge according to claim 1, characterized in that: The top of both the first connecting plate (21) and the second connecting plate (26) are provided with several connecting screw holes. The first connecting plate (21) and the second connecting plate (26) are connected to the flanges on the air outlet pipe (1), the air inlet pipe (7) and the heat preservation preheating tank (4) by bolts.

4. The precise preheating device for yellow phosphorus electric furnace charge according to claim 1, characterized in that: The anti-blocking component (6) includes several outer rings (64), which are located at the bottom, middle and top of the outside of the heat preservation preheating tank (4). Several positioning sleeves (61) are fixedly sleeved on the outside of the outer rings (64), and the outer rings (64) are connected to each other through connecting pipes (63).

5. The precise preheating device for yellow phosphorus electric furnace charge according to claim 4, characterized in that: The inner side of the positioning sleeve (61) is connected to a positioning rod (65), and the inner side of the positioning rod (65) is connected to the heat preservation preheating tank (4).

6. The precise preheating device for yellow phosphorus electric furnace charge according to claim 4, characterized in that: The inner side of the outer ring (64) is connected to several nozzles (62). The side of the nozzle (62) away from the outer ring (64) passes through the heat preservation preheating tank (4). The right side of the outer ring (64) located in the middle is connected to a steam injection pipe (66). A manual valve (67) is installed on the steam injection pipe (66).

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