Device for calcining phosphate ore by using yellow phosphorus tail gas

Abstract

The utility model relates to the technical field of ore processing, and discloses a device for calcining phosphate ore by using yellow phosphorus tail gas, which comprises a base, a calcining furnace is fixedly mounted at the top of the base, a smoke exhaust pipe for exhausting smoke is fixedly mounted on one side of the calcining furnace, and an absorption box for treating smoke is also fixedly mounted at the top of the base; the absorption assembly comprises a spraying head, a first liquid discharging groove, a second liquid discharging groove and a third liquid discharging groove, the spraying head is fixedly installed in the absorption box, the first liquid discharging groove, the second liquid discharging groove and the third liquid discharging groove are formed in the bottom of the spraying head, and three water curtains are formed through the first liquid discharging groove, the second liquid discharging groove and the third liquid discharging groove in the bottom of the spraying head; the flue gas is sequentially absorbed by the three water curtains, noxious substances in the flue gas can be reduced, dust can be dissolved in liquid, and compared with a physical filtering mode in the prior art, the scheme can reduce floating dust, guarantee treatment of the noxious substances in the flue gas and reduce the exhaust temperature.

Description

Technical Field

[0001] This utility model relates to the field of ore processing technology, and in particular to a device for calcining phosphate rock with yellow phosphorus tail gas. Background Technology

[0002] Phosphate rock is a general term for economically usable phosphate minerals, and calcination is one of the processing methods.

[0003] A search revealed that existing technology discloses a base (publication number: CN221403892U), a calcining furnace fixedly connected to the top of the base, a crushing box fixedly connected to the top of the calcining furnace, an adjustable crushing mechanism fixedly connected inside the crushing box, a transmission pipe fixedly connected to the right side of the calcining furnace, and a filter mechanism fixedly connected to the top of the transmission pipe; the adjustable crushing mechanism includes an adjusting component and a crushing component, the adjusting component being disposed at the back end of the crushing box, and the crushing component being disposed inside the crushing box.

[0004] In the existing technology, by setting up an absorption box at the exhaust pipe and using the filter material inside the absorption box to filter and treat the flue gas, the flue gas generated during the calcination process has a high temperature and a high particulate content, which has a great negative impact on the life and maintenance cycle of the filter material. On the one hand, it may result in a short life of the filter material, a high replacement frequency, and an increased workload of maintenance.

[0005] Therefore, we propose a device for calcining phosphate rock with yellow phosphorus tail gas. Utility Model Content

[0006] This invention mainly addresses the technical problem of high maintenance frequency and large workload in the absorption of flue gas by the above-mentioned filter materials, and provides a device for calcining phosphate rock with yellow phosphorus tail gas.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a device for calcining phosphate rock with yellow phosphorus tail gas, comprising:

[0008] A base, on the top of which a calcining furnace is fixedly installed, and on one side of the calcining furnace a flue pipe for exhausting smoke is fixedly installed. An absorption box for treating flue gas is also fixedly installed on the top of the base, and the flue pipe is connected to the absorption box.

[0009] An absorption assembly, installed inside an absorption chamber, is used to absorb the flue gas discharged from the exhaust pipe. The absorption assembly includes a nozzle, a first drain trough, a second drain trough, and a third drain trough. The nozzle is fixedly installed inside the absorption chamber and has a cavity. The bottom of the nozzle has the first drain trough, the second drain trough, and the third drain trough. The nozzle is fixedly connected to a pipe for infusion. The bottom of the nozzle can discharge a water curtain to surround and absorb the flue gas discharged from the exhaust pipe.

[0010] In a preferred embodiment of this invention, the absorption assembly further includes a delivery pump, which is fixedly installed at the bottom of the absorption tank, and the connecting pipe on the side wall of the spray head is fixedly connected to the drain outlet of the delivery pump.

[0011] In a preferred embodiment of this utility model, the absorption component further includes a spraying element, which is fixedly connected to the exhaust pipe port. The spraying element is a hollow disc with uniformly distributed spray holes.

[0012] In a preferred embodiment of this utility model, the exhaust pipe forms a U-shaped bend within the absorption chamber, with the port of the exhaust pipe inside the absorption chamber facing the top of the absorption chamber, and the spray head located above the port of the exhaust pipe.

[0013] In a preferred embodiment of this utility model, the first draining tank, the second draining tank, and the third draining tank are all C-shaped horizontal cross-sections, and the diameters of the first draining tank, the second draining tank, and the third draining tank increase uniformly in sequence.

[0014] In a preferred embodiment of this utility model, both the absorption box and the spray head have openings at the top. The top of the absorption box is provided with a detachable top cover, and a sealing plate and a discharge pipe are fixedly installed on the top cover. The sealing plate can seal the upper end of the spray head, and the top cover can seal the upper end of the absorption box.

[0015] In a preferred embodiment of this utility model, the top cover forms a plate adapted to the absorption box, the top cover is locked to the absorption box by screws, a sealing gasket is provided between the top cover and the absorption box, the sealing plate is fixedly installed at the bottom of the top cover, and the sealing plate is adapted to the spray head.

[0016] Beneficial effects

[0017] This invention provides a device for calcining phosphate rock with yellow phosphorus tail gas. It has the following beneficial effects:

[0018] 1. This yellow phosphorus tail gas calcination phosphate rock device forms three water curtains through the first, second, and third drain tanks at the bottom of the injector head. The rising flue gas is located in the middle of the water curtains, and the three water curtains absorb the flue gas in sequence. This not only reduces harmful substances in the flue gas, but also dissolves dust in the liquid. Compared with the existing technology that uses physical filtration, this solution can reduce floating dust while ensuring the treatment of harmful substances in the flue gas and reducing the exhaust temperature.

[0019] 2. This yellow phosphorus tail gas calcination phosphate rock device uses an injection component to make the flue gas discharged from the flue pipe form several streams, avoiding the formation of a bundled airflow from the flue pipe, ensuring full contact between the flue gas and the absorbent liquid, thereby improving the absorption effect.

[0020] 3. This yellow phosphorus tail gas calcination phosphate rock device features a removable top cover. After removing the top cover, the upper ports of the absorption box and the injection head are open, facilitating cleaning or replacement of the filter cotton and simplifying subsequent maintenance. The filter cotton effectively filters and removes impurities from the absorbent liquid during flue gas absorption, preventing particles from accumulating at the bottom of the absorption box. Replacing the filter cotton is also more convenient than simply cleaning the bottom of the absorption box. Attached Figure Description

[0021] Figure 1 This is a perspective view of the entire utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the absorption box of this utility model;

[0023] Figure 3 This is a perspective view of the top cover and spray head of this utility model;

[0024] Figure 4 This is a perspective view of the spray head of this utility model;

[0025] Figure 5 This is a bottom-view perspective view of the top cover of this utility model.

[0026] Legend: 10. Base; 11. Calcining furnace; 12. Absorption box; 13. Exhaust pipe; 14. Injector; 15. Conveying pump; 16. Injector head; 17. First drain tank; 18. Second drain tank; 19. Third drain tank; 20. Top cover; 21. Sealing plate; 22. Discharge pipe. Detailed Implementation

[0027] A device for calcining phosphate rock with yellow phosphorus tail gas, such as Figure 1 and Figure 2 As shown, it includes:

[0028] A base 10 is provided, and a calcining furnace 11 is fixedly installed on the top of the base 10. A flue pipe 13 for exhausting smoke is fixedly installed on one side of the calcining furnace 11. An absorption box 12 for treating flue gas is also fixedly installed on the top of the base 10. The flue pipe 13 is connected to the absorption box 12. The calcining furnace 11 is equipped with a grate and electric heating rods. The ore on the calcining grate is heated by the electric heating rods. This is a known prior art and will not be described in detail here.

[0029] like Figure 2 , Figure 3 and Figure 4As shown, the absorption assembly is installed inside the absorption box 12 to absorb the flue gas discharged from the exhaust pipe 13. The absorption assembly includes a nozzle 16, a first drain trough 17, a second drain trough 18, and a third drain trough 19. The nozzle 16 is fixedly installed inside the absorption box 12 and has a cavity. The bottom of the nozzle 16 has the first drain trough 17, the second drain trough 18, and the third drain trough 19. The nozzle 16 is fixedly connected to a pipe for infusion. The bottom of the nozzle 16 can discharge a water curtain to surround and absorb the flue gas discharged from the exhaust pipe 13. The exhaust pipe 13 forms a U-shaped bend inside the absorption box 12. The port of the exhaust pipe 13 inside the absorption box 12 faces the top of the absorption box 12. The nozzle 16 is located above the port of the exhaust pipe 13. The first drain trough 17, the second drain trough 18, and the third drain trough 19 are all horizontal C-shaped grooves. The diameters of the first drain trough 17, the second drain trough 18, and the third drain trough 19 increase uniformly in sequence.

[0030] In this solution, for the optimization of exhaust gas treatment during calcination, the flue gas generated during calcination is discharged into the absorption box 12 through the exhaust pipe 13. The flue gas discharged from the port of the exhaust pipe 13 rises, and the connecting pipe sends the absorbent liquid into the spray head 16. Three water curtains are formed by the first drain trough 17, the second drain trough 18 and the third drain trough 19 at the bottom of the spray head 16. The rising flue gas is located in the middle of the water curtain, and the three water curtains absorb the flue gas in sequence. This not only reduces the harmful substances in the flue gas, but also dissolves the dust in the liquid. Compared with the existing technology that uses physical filtration, this solution can reduce floating dust while ensuring the treatment of harmful substances in the flue gas and reducing the exhaust temperature. The absorbent liquid is prepared according to the acidity, alkalinity and content of the flue gas. For example, if the flue gas is acidic, an alkaline solution can be sent through the connecting pipe to absorb the flue gas and neutralize the harmful substances in the exhaust gas.

[0031] like Figure 2 As shown, the absorption assembly also includes a delivery pump 15. The delivery pump 15 is fixedly installed at the bottom of the absorption tank 12. The connecting pipe on the side wall of the nozzle 16 is fixedly connected to the drain port of the delivery pump 15. The delivery pump 15 is used to send the liquid in the absorption tank 12 into the connecting pipe and the nozzle 16 to realize the continuous circulation of the liquid and ensure the continuity of the water curtain.

[0032] like Figure 2 As shown, the absorption assembly also includes a spray element 14, which is fixedly connected to the port of the exhaust pipe 13. The spray element 14 is a hollow disc with spray holes evenly distributed. The spray element 14 causes the flue gas discharged from the exhaust pipe 13 to form several streams, preventing the exhaust pipe 13 from forming a bundle of airflow, ensuring that the flue gas and the absorbent liquid are in full contact, thereby improving the absorption effect.

[0033] like Figure 2 , Figure 4 and Figure 5As shown, both the top of the absorption box 12 and the spray head 16 are open. The top of the absorption box 12 is provided with a detachable top cover 20. The top cover 20 is fixedly installed with a sealing plate 21 and a discharge pipe 22. The sealing plate 21 can seal the upper end of the spray head 16, and the top cover 20 can seal the upper end of the absorption box 12. The top cover 20 forms a plate that fits the absorption box 12. The top cover 20 is locked to the absorption box 12 by screws. A sealing gasket is provided between the top cover 20 and the absorption box 12. The sealing plate 21 is fixedly installed at the bottom of the top cover 20 and is adapted to the spray head 16.

[0034] In this design, the spray head 16 is equipped with filter material, such as high-density filter cotton. By setting a removable top cover 20, the upper ports of the absorption box 12 and the spray head 16 are open after the top cover 20 is removed, which facilitates cleaning or replacement of the filter cotton and makes subsequent maintenance work easier. The filter cotton can filter and remove impurities from the absorbent liquid during the absorption of flue gas, preventing particles from accumulating at the bottom of the absorption box 12. Replacing the filter cotton is more convenient than cleaning the bottom of the absorption box 12.

[0035] The working principle of this utility model is as follows: The delivery pump 15 is used to send the liquid in the absorption tank 12 into the connecting pipe and the spray head 16 to realize the continuous circulation of the liquid. The flue gas generated by calcination is discharged into the absorption tank 12 through the flue pipe 13. The flue gas discharged from the port of the flue pipe 13 rises, and the connecting pipe sends the absorbent liquid into the spray head 16. Three water curtains are formed by the first drain trough 17, the second drain trough 18 and the third drain trough 19 at the bottom of the spray head 16. The rising flue gas is located in the middle of the water curtain, and the three water curtains absorb the flue gas in sequence to realize the multiple absorption treatment of the flue gas. The spray head 16 is equipped with filter material, such as high-density filter cotton. By setting a detachable top cover 20, the upper port of the absorption tank 12 and the spray head 16 is open after the top cover 20 is removed, which facilitates cleaning or replacement of the filter cotton.

[0036] A replenishment pipe for adding absorbent is fixedly installed on the back of the absorption tank 12. The replenishment pipe is equipped with a valve. A heat exchange fan can be installed on the back of the absorption tank 12 to cool the absorption tank 12 and the absorbent inside.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for calcining phosphate rock with yellow phosphorus tail gas, characterized in that, include: A base (10) is provided, on the top of which a calcining furnace (11) is fixedly installed. A flue pipe (13) for exhausting smoke is fixedly installed on one side of the calcining furnace (11). An absorption box (12) for treating flue gas is also fixedly installed on the top of the base (10). The flue pipe (13) is connected to the absorption box (12). An absorption assembly is installed inside the absorption box (12) to absorb the flue gas discharged from the exhaust pipe (13). The absorption assembly includes a spray head (16), a first drain trough (17), a second drain trough (18), and a third drain trough (19). The spray head (16) is fixedly installed inside the absorption box (12). The spray head (16) has a cavity. The bottom of the spray head (16) has the first drain trough (17), the second drain trough (18), and the third drain trough (19). The spray head (16) is fixedly connected to a pipe for infusion. The bottom of the spray head (16) can discharge a water curtain to surround and absorb the flue gas discharged from the exhaust pipe (13).

2. The apparatus for calcining phosphate rock from yellow phosphorus tail gas according to claim 1, characterized in that: The absorption assembly also includes a delivery pump (15), which is fixedly installed at the bottom of the absorption tank (12), and the connecting pipe on the side wall of the spray head (16) is fixedly connected to the drain port of the delivery pump (15).

3. The apparatus for calcining phosphate ore from yellow phosphorus tail gas as claimed in claim 1, characterized in that: The absorption assembly also includes a spray element (14), which is fixedly connected to the port of the exhaust pipe (13). The spray element (14) is a hollow disc, and spray holes are evenly distributed on the spray element (14).

4. The apparatus for calcining phosphate ore from yellow phosphorus tail gas as claimed in claim 1, characterized in that: The exhaust pipe (13) forms a U-shaped bend inside the absorption box (12). The port of the exhaust pipe (13) inside the absorption box (12) faces the top of the absorption box (12), and the spray head (16) is located above the port of the exhaust pipe (13).

5. The apparatus for calcining phosphate ore from yellow phosphorus tail gas as claimed in claim 1, characterized in that: The first draining tank (17), the second draining tank (18) and the third draining tank (19) are all C-shaped tanks with horizontal cross sections, and the diameters of the first draining tank (17), the second draining tank (18) and the third draining tank (19) increase uniformly in sequence.

6. The apparatus for calcining phosphate ore from yellow phosphorus tail gas according to claim 1, characterized in that: The top of both the absorption box (12) and the spray head (16) are open. The top of the absorption box (12) is provided with a detachable top cover (20). The top cover (20) is fixedly installed with a sealing plate (21) and a discharge pipe (22). The sealing plate (21) can seal the upper end of the spray head (16), and the top cover (20) can seal the upper end of the absorption box (12).

7. The apparatus of claim 6, wherein: The top cover (20) forms a plate adapted to the absorption box (12). The top cover (20) is locked to the absorption box (12) by screws. A sealing gasket is provided between the top cover (20) and the absorption box (12). The sealing plate (21) is fixedly installed at the bottom of the top cover (20). The sealing plate (21) is adapted to the spray head (16).

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